Home

BOONTON - emctest.it

1. 813 lt 22 ARI 1 2 C3 C4 5 6 cs c9 CRI CR2 CR3 6 106 P1 P4 5 10 6 6 FEO CODE CG HEAT SINK ASSEMBLY 04901 339 QUAD COMPARATOR 27014 EL 2200uF 10 504 35 57582 EL 4700uF 10 50 16V 54217 EL TOuF 20 25V 54217 EL 100uF 20 25 54217 EL 1000uF 10 50 10V 56289 CAP 3300pF 10 100 61637 EL 100uF 20 25 54217 DIODE BRIDGE 02 15281 DIODE BRIDGE 5 248 6A 200 PIV 27777 DIODE SIG 1N4001 04713 781 05 VOLT REG 07253 40138 DUAL FLIP FLOP 02735 HEADER 5 PIN STRAIGHT 06283 CONNECTOR 6 PIN STRAIGHT POLAR 27264 COHHECTOR 6 PIN STRAIGHT POLAR 27264 042232008 LM339N KSMM 2200 35 5 25 100 5 25 10 5 25 100 51301 9511010064 052 32 1 5 5 25 100 KBP02 y 248 1N4001 uA 8LO0SAUC 04013 55156 5 0 22 04 2061 22 04 2061 LN mt we N N 535012000 224219000 205006000 283336000 281011000 224310000 283336000 224119000 205003000 205024000 205002000 281011000 530174000 530752000 535053000 400584000 400582000 400386000 29071000 341317000 341500000 311410000 341500000 341357000 341300000 341400000 391558000 341308000 341311000
2. 831271 Ji PIN2 24 03 Z 23 Si ai SSEIOI G I II L ats 23104 eat 5 2V 6 55 DBs Rs 5 TO PI 24 0s TIN 22225521 2 18 7 28 RL4 E 01 S 2157 Td ee 722 9 m 6 5 2 ig TO 24 0 SL SLo SV 525 SON TEREINA L ge a sti wc et lt S TO IC3 PIN 33a 1 24 A3 1 IC14 in 2 TO IC3 PIN34 SNT4LS42N 4 GND E S 3 50 P1 24 PIN27 37 S 9 1 9 es 6 CNTL STB WR TO PI 24 PIN36 ott 8255 20 gs PI 2a PIN3TaA d CSIF vec PINT 52V 421 6 PINS c Ber A 25 5 2V gt N C g b vy 11 LOW LIM uz 236 WR 15 gt WR an lt 29 PC gt INPUT DISC Q 9 IT GND me 8 TO IC3 PIN 22 WR 5 cim 8 ioe Pc BEEN 16159 pa L P89 TO 1C3 PIN 20 TORG SN74LS32N TUNE 20 PB a eT s CeCe z Pee TO 1C3 PIN 21 RD PB 3 a 50 pas 23 PBs P85 7 Ea 6 TO IC4 PINI2 P86 s par 5 P87 9 THRU 16 ez 898 3 R4 7K er TO 1C3 PIN 28 RFSH R ict 4 3 i dE eS EY 7 mim
3. 42007 8 sen 1720 19 arias MADE T MA AS cic Figure 3 2 Rear View of Instrument 3 2 TABLE 3 1 CONTROLS INDICATORS AND CONNECTORS Section III Operation Control Indicator Figure and Control Indicator Figure and or Connector Index No Function or Connector Index No Function LSN ATN REM and TLK annunciators Meter CHI CH2 and CH3 annunciators MODE keys RANGE keys LED display mW pW and nW annunciators dBm and dBr annunciators LIM annunciator dB LIMITS keys CAL FAC keys Indicates operation of IEEE 488 bus interface option 01 Indicates power and dB levels for peaking and nulling operation Indicates channel in use Selects LED display indication mode POWER or dB Selects ranging mode AUTO or HOLD Four digit LED display with minus sign and decimal points provides numerical indication of measured power or dBm and of data entered or recalled through kevboard or error messages Indicates units of power when instru ment is operating in power mode Indicates dB mode in use when instrument is operating in dB mode Indicates when power level in dB is outside selected dB limits Provides means for entering and recalling dB limits LO and Provides means for entering and recalling calibration factors in terms of dB or frequency SELECT keys CHNL key REF LEL d
4. This test checks output of digital information to the display The signature analysis gate in this test 15 quite lengthy approximately 8 seconds hold the signature analyzer probe on each test point for at least one complete window approximately 20 seconds O open C closed TABLE 5 13 CONTROL BOARD DISPLAY SCAN TEST Signature Analyzer Switch Connection Bit Switch Measurement Function Setting Point 123 45 67 8 Point Signature Common 5V 32 ICIS pin 33 8 pin 34 IC18 pin 35 This test checks the control board display 1 O chip for output of encoded scan data O open z closed 5 12 Section V Maintenance TABLE 5 14 KEYBOARD VISUAL TEST it Switch Press Keyboard Kev MODE PWR RANGE AUTO LIMITS LO CAL FACTOR dB SELECT SENS dB REF LEVEL dB MODE dB RANGE HOLD LIMITS CAL FACTOR GH SELECT CHNL CLR CHS Instrument Display QA WN This test is partly keyboard and partly control board because the 1 O chip ICI8 for the display board resides on the control board open closed TABLE 5 15 CONTROL BOARD RAM TEST Signature Analyzer Switch Connection Bit Switch Measurement Setting Point 1 234567 8 ltem Point Function Signature OC Oo C C C C O Es Tis test writes bit patterns into each byte ot the RAM reads each byte and outputs it to
5. 4 13 4 7 Power Supply P C Board Detailed Block Diagram 4 15 5 1 Location of Major Assemblies Sheet 1 2 5 4 5 1 Location of Major Assemblies Sheet 2 2 5 5 5 2 Input P C Board Voltage and Waveform Data 5 6 5 3 Control Board Bit Switch nh 5 7 5 4 Non Volatile RAM Cell Test and Connection Points 5 18 5 5 Test Setup lor Input Module Offset Chopper and A D Converter Adjustments 5 20 5 6 Test Setup for Recorder Output Adjustment 0 0 5 21 5 7 Test Setup for Determination of Attenuation Value 5 28 5 8 Calibration Test Setup Model 4200 6 Sensor 20 dBm Range 5 28 LIST OF TABLES Performance Specifications Sensor Characteristics cse PIA Maximum Response Chart for Series 4200 A Sensors Operating Controls Indicators and Connectors Instrument Zeroing Time Test Equipment List ce bee Rad acea as Control Board Address Field Control Board Memory Decoding Test 0 0 Control Board VO Decoding Test
6. 99 20 9 an i a B 9 44 02 3 cry TTD qa 1 Nee ai Lmao 24 i Bas Nes s as 6 RLS 0 INTERFACE 1759 ro 3 or aem soome asma r 123 a c t 30 AO ad 8 a 9 8 0 80AR0 9 32 a2 6 6 3s as Vaal 23 QTPI6 30 i to t 12 weur H ae 33 Sui 4 RP 23 83 13 3 AS 3 80 I 14 De aeN A6 2 34 2 5 ag 15 2 37 7 1 AT 6 T EN as se a ores as 7 jen m r is A tQ tas Gomer CSANO 39 CSAN 24 CSIF 3s e 3 zo 37 wate 2 5 Low I E 4 MGH LIMIT 16 gt 3 INPUT DISCONNECT 17 PCS TPS 18 i P 1 gt za 2 8 3 1 4 Curent inrenrace 2 poe 5 SOURCE 23 253 gt 6 24 86 25 87 43 5 4 PAO 1 ante p A Sot 12 8 Qr i RESISTIVE 34 4 ho eA tm ter IV 26 RESET U EET hs 5 oe 16 INT eT 5 2 15 412 aca gt i ene 4 TPS 2 0 28 30 20 2 22 25 25 33 34 26 27 29 35 4 3 5 TA 9 gt F T P 8 3 4 5 TO PC 8 FROM POWER SUPPLY PC BOARD Figure 4 4 Control P C Board Detailed Block Diagram 4 7 4 8 tors some key entered parame
7. 5 The automatic zeroing cycle time 15 approxi mately 10 to 22 seconds depend ing on range Until zeroing 1 com pleted the Instrument will be unable to respond with new The first line of the preceding Instructions sets the operating mode and initiates the zeroing cycle last Ine reads the response from the Instrument The instrument response con sists of two numeric values the first value Is the front panel reading and the second 15 a status value normally zero These two numbers wll be stored in the calculator variables storage locations V and S Note that each data transmission from the instru ment consists of two values When the status value 15 non zero Indicating an error con dition the data value wlll be set to zero The program 111 normally test the status value to assure valid operating conditions 20 Store Recall Functions Syntax The general syntax for store recall functions 15 the same as the front panel sequence if a numeric value immediately precedes the func tlon that value will be stored otherwise the existing stored value will be recalled to the front panel These functions L H D R J U V thus operate dual mode When the Instrument is In the store or recall mode the display will blInk to indi cate that the Instrument Is not in the measurement mode The instrument s returned to the measurement mode by sending any of the following P 8 O 1J
8. 534317000 534318000 Switch S1 Settings Operating Mode Native IEEE 488 control MATE compatible IEEE 488 control closed Logie 0 O open Logic 1 X don t care as required APPENDIX E OPTION 4200 06 14 SETUP SETUP command syntax 15 as follows FNC ACS CHn optional limits lt gt lt gt where CHn CHO CH1 or CHO1 cr asci return 1f ine feed 15 The optional imits set minimum and maximum values for power and the operating frequency These limits will default to values appropriate for the particular sensor In use with the minimum power set to 99 99 dm 16 With the 4200 4E sensor for example the default limits would be 10 00 dBm 99 99 dBm 200 kilohertz Maximum power Minimum power Signal frequency 17 Each limit may be optionally set within the FNC command string Any limit not set will retaln Its default value Command Comment SRX POWR value Max power range PMIN to sensor max Min power range 99 99 dBm to PMAX Use sensor determined defaults Frequency range sensor to sensor max SRN POWR value SET POWR AUTO SET FREQ value Note value asc numeric string fixed or floating point E 18 If no error is detected while parsing the string the active channel will be set as determined by the CHn modifier and the Im t values
9. Control Board ROM 0 Test Control Board ROM Test Interface Board ROM 2 Test Control Board 4ABIO Test 0 0 Control Board 4CIO Test Control Board 4DIO Test Display Visual Test Iles Control Board Display Control Board Display Scan Test Keyboard Visual Test ee Control Board RAM Test Input Module Channel OAIO Test Input Module Channel OBIO Test Input Module Channel 1 OCIO Test Input Module Channel ODIO Test Input Module Channel 2 AIO Test Input Module Channel 2 BIO Input Module Channel 2 ICIO Test Input Module Channel 2 IDIO Test DC Calibration Test Sa os ue sd seers ss pe Fra EAS Full Scale Sensor Calibration Data for 4A 4B 4C 4E SB SE 5G 6E 7E and 8E Series Sensors Down Scale Sensor Calibration Data for 4A 4B 4C 4E 5B SE SG 6E 7E and 8E Series Sensors Down Scale Connection Data Typical Calibration Data for Model 4200 6 with Model 4200 1
10. operation may resuit permanent change in characteristics or burnout Power ineanty uncertainty worst case 4B 4C 4E 003 x f 98 dB above 4 dBm above 14 dBm tor the SE and above 24 dBm for the 68 where f is in GHz Other sensors negngidie See Instruct ion manual supplement Section I Introduction Table 1 3A Model 4200 and DIODE SENSORS Measurement Speed through the IEEE Bus Starting Level dBm 10 dB Power Step 20 db Power Step 30 db Power Step E 50 db Power Step 60 0 60 s 0 65 s Q 45 s 0 50 s 50 0 60 s 5 45 0 40 5 N A 0 35 s N A 0 505 N A 40 2 0 40 s 0 35 54 0405 N A 0 355 N A 30 N A Table 1 3B Model 4200 and THERMAL true RMS SENSORS Measurement Speed through the IEEE Bus Starting Level dBm 10 4 Power Step 20 db Power Step 30 db Power Step 40 db Power Step 1 1 7 Sensor 8E Sensor t Increasing Increasing Decreasing Increasing Decreasing NA NA ny NA NA 1 Measurement Speed is the time required to make measurements within 0 1 dB of final value on the ending range using an HP 85 controller The free run access time is 55 ms 18 measurements per second 2 These are typical speeds in seconds using the Display Hold 07 command measurement mode 3 With dual channel operation i e with Option 03 installed the measurement rate is two sets of readings per second TABLE 1 3 MAXIMUM RESPONSE CHART FOR
11. 4 34 Detailed Theory of Operation Display P C Board 4 41 Detailed Theory of Operation Power Reference P C 4 44 Detailed Theory of Operation Power Supply P C Board SECTION V MAINTENANCE Paragraph 5 1 Introduction eoe Re Roe eis E Ux Rr y S Ere ES LI YA 5 3 Safety Requirements o zu eut uu ms mt aerae d vdd 5 5 Test Equipment Required 5 7 Troubleshooting Concept 5 9 Signature Analysis E S ad 5 15 Trouble Localization se ve TES SR im ee a 5 16 Gaining Access to Internal Component 5 17 Visual Inspection 5 18 Use of Block Diagrams 5 19 Systematic Troubleshooting mh eh 5 20 Signature Analysis Free Running Test Procedures 5 22 Signature Analysis Programmed Test Procedures 5 24 Non Volatile RAM Circuit Tests 5 25 Non Volatile RAM Test s ea m Rmo ORE ee a A 5 26 Non Volatile RAM Cell Test pass uncuy wis ee ee ee ee eee ee eee 5 27 Non Volatile RAM Cell Re
12. USED ON 92E S5 ONLY 2 R7 AND R8 USED WITH 4210 7E AND 4210 96 ONLY B831045G A4 CHOPPER P C BD RED 2 1 9 Ci 1N52328 e o 2 e CR2 1N52328 O l uF WHT P2 2 NOTES RESISTANCE VALUES IN OHMS 2 FACTORY SELECTED CAPACITANCE 1 PART BD CIRCUITRY EXTERNAL MARKING 08312710 Section Schematic Diagrams PI 1 TO AMP R7 TR 0 22 pF 20 SS CONNECTS TO 4641 R4 20K ON FRAME SCHEMATIC 831271 NOTE B SHT OF 7 RS A6 J N 20 ON OPTION FRAME X SCHEMATIC 851099 RBS 22 2014 A242 2 ON FRAME SCHEMATIC CTRL 75 831170 GB 04016865 SHT OF 3 1 0 3 gt TO AMP 4 MI R6 51 1K 5 wa 6 5 5 LAST NUMBERS USED R8 6 NUMBERS NOT USED SCHEMATIC CHOPPER PC B0 RI R2 08312710 SHT 4 OF 7 7 USED ON 92 55 ONLY 8 RES R7 RB USED ONLY WITH 4210 7E 4210 SENSORS Figure 7 4 Chopper Board A4 Schematic Diagram 7 9 7 10 Section VII Schematic Diagrams J2 23 Q2 3 4 16 5 CONTROL BOARD AN 15 34 20s Ag out E Ag OUT D 0 o I To ede Aea on AR E e a CONNECTS TO TO JI PIN8 IM ss Ba J BD AIWI3J18 18 1 24 D 2 12 ON FRAME SCHEMATIC SS 315 15
13. b It provides a first in first out RAM which accepts and stores input information up to 8 key commands from the display printed circuit board c It provides scan signals for both the LED display and the keyboard 4 37 The LED display consists of four 7 segment displays which provide a display capacity of four digits with decimal points and a fifth display which is capable of displaying a minus sign Each display consists of individual anodes for each segment that makes up the display and the decimal point and a common cathode The character that appears on the displav is determined by the activated anodes at the time that the common cathode is scanned The individual displavs and the associated annunciators are scanned in sequence The 4 10 display duty cycle is 12 5 that is each digit or annunciator of the instrument is on 12 5 of the time 4 38 Digital information for the LED display and annun ciators is developed by the microprocessor and isstored in the output RAM contained in integrated circuit IC18 on the control printed circuit board Digital information that defines display and annunciator row selection is supplied to 8 channel demultiplexer 2 The output lines of demulti plexer 1C2 are activated in sequence based on the input digital codes The signal on the active output line of demul tiplexer is applied through resistive network 1C5 to display driver 7 and the display driver supplies driving
14. sothat the microprocessor can monitor the results of the comparison and adjust the digital signal accordingly The digital signal is adjusted by the microprocessor until the two input signals to comparator A2 are equal The resulting digital signal then defines the input DC level being measured This digital signal is then processed zero correction calibration correction unit conversion etc by the microprocessor before application to the LED display circuits of the instrument 4 24 After the digital signal has been fully processed by the microprocessor the processed digital signal is again supplied by the nticroprocessor to D A converter 2 which converts the processed digital signal to a cor responding DC analog voltage that is used to drive the ront panel meter and the recorder output of the instrument This DC analog voltage Irom D A converter 4 4 IC2 is supplied through amplifier Al to sample and hold switch which is closed at this time by a control signal from the microprocessor The DC analog voltage at the output of the sample and hold circuit is applied through amplifier A4 and the control printed circuit board to the displav printed circuit board 4 25 interfacing between the input printed circuit board and the microprocessor is accomplished through interface ICI Interface ICI is an input output device that operates under control of the microprocessor When signal RD is activated by the microproce
15. Set the bit switch to CALIBRATE MODE 2 and recall gain factor by pressing HOLD REF LEVEL dB A gain factor of 5000 is displayed Increase gain factor by 600 pres sing 5 6 0 0 REF LEVEL dB Recheck in OPERATE MODE If the example display was 30 counts high a cor rection would hive been made 600 counts lower or 4400 5 34 Display Board Recorder Output Adjustment To check and adjust the recorder output proceed as follows Section V TABLE 5 25 FULL SCALE SENSOR CALIBRATION DATA Maintenance FOR 4A 4B 4 5 5 AND 6E SERIES SENSORS Allow Record 25A 50MHz Press settling Press Display 5000 54dBm 398nW 0 HOLD 3 9 8 CAL 0 HI REF LVL dB 0 MODE dB 1 HOLD 3 9 0 MODE dB 2 HOLD 3 9 0 MODE dB 3 HOLD 3 9 0 MODE dB 4 HOLD 3 9 0 MODE dB 5 HOLD 9 9 9 9 MODE dB 6 HOLD 9 9 9 MODE dB 44dBm 3 98nW CAL 0 HI REF LVL dB 5000 34dBm 39 8nW CAL 0 HI REF LVL dB z 5000 24dBm 3 984 W CAL 0 HI REF LVL dB 5000 144Bm 39 8W CAL 0 HI REF LVL dB 5000 OdBm 1 00mW CAL 0 HI REF LVL dB 5000 10dBmi 10 0mW CAL O HI REF LVL dB 5000 levels should be increased by 10 dB for SB and SE sensors and 20 dB for 6E sensor FOR 5G SERIES SENSOR 29dBmt 1 264 W 2 HOLD 1 2 6 CAL 0 HI REF LVL dB 5000 MODE dB 19dBm 12 6uW HOLD 1 2 CAL 0 HI
16. entry too large measurement under range measurement over range zero acquisition out of range excessive positive offset 6 zero acquisition out of range excessive positive offset 7 channel 3 over under range UNO W un n w H H R Range Code coded per Table 4 tc termination character A 23 Hold Indication Function Syntax Hold Indication function when enabled 10 automatically does a measurement cycle following Its receipt and then holds the Indication unti receipt of a T 00 or another 10 command It 15 Intended primarily for use with the Trigger or Group Execute Trigger commands Following Its receipt the Instrument continues to measure but does not update the display This can be use ful where response time is Important since APPENDIX OPTION 4200 01A Range Code 4200 4E lt 50 dBm 5 40 dBm 5 50 dBm 5 50 dBm 4 20 dBm lt 20 dBm lt 10 dBm lt 10 dBm lt 0 dBm lt 0 dBm lt 10 dBm lt 10 dBm OU Pp LAN 25 Continued display update time is eliminated until called for with a Trigger T command another 1Q command will also update the display and maintain the hold Indication function 00 command wil update the display and negate the hold indication func tion A 24 SRO Function Syntax control ler can command the instrument to pul the SRO line true after each measurement The syntax for this command is 1V to command the
17. 01 POWER CONSUMPTION 24 VA 100 120 220 and 240 volts 50 to 400 Hz WEIGHT 4 54 kg 10 Ibs approximately DIMENSIONS 14 9 cm high x 21 1 wide x 34 9 deep 5 85 in x 8 3 x 13 75 ACCESSORIES FURNISHED 5 foot power sensor cable Model 41 2 for each sensor ordered ACCESSORIES REQUIRED One or more of the power sensors Refer to the Sensor Characteristics Section 1 Introduction TABLE 1 1 PERFORMANCE SPECIFICATIONS Cont OTHER ACCESSORIES AVAILABLE Part No 950000 Rack mounts one Model 4200 placed either right or left on 19 inch spacing Part No 950001 Rack mounts two instruments side by side Part No 950002 Rack mounts one Model 4200 with older Boonton half rack units right or left Part No 950037 Rack mounts two instruments side by side with full extension and locking chassis slides Part No 950038 Rack mounts one Model 4200 placed either right or left of an accessory storage tray Provision for front connection to dual channel rear inputs Full extension locking slides OPTIONS 01 01B Remote Operation to IEEE Bus Standard All front panel controls except line switch and power reference switch In addition individual power and dB ranges may be selected and selectively zeroed Listen talk address set by rear panel bit switch The 4200 implements these subsets of the GPIB function SH Source Handshake complete capability LEO No Extended Listener capability AHI Acceptor Handshake complete
18. 2 In the dB mode it is proportional to displayed dBm with the relationship shown following Recorder Output Sensors Series 4 7 K Ka Q U v w _ 9 9 8 8 7 7 6 6 5 5 4 4 3 3 2 2 9 8 7 6 5 4 3 2 3 In thechannel 3 mode option it is similar to thedB mode but for the channel 1 level only c Status Output Rear panel connector P3 provides signal outputs for input disconnect during zeroing operations and high and low DB limit signals during dB measurements The dB limits always test against the displayed value for operation With the calibration factor and dB reference level equal to zero the dB limits entered prevail With a dB reference level other than zero the displayed value is checked against the limits chosen In the channel 3 mode option the first limit exceeded whether channel or channel 2 activates the limit status Pin connections are as follows Connector Pin Signal l Common 2 Not used 3 Logic high indicates zeroing operation 4 Logic low within dB limits logic high above high dB limit 5 Logic low within dB limits logic high below low dB limit See Instruction manual supplement Section SECTION 3 1 INTRODUCTION 3 2 This section contains the operating instructions for the Model 4200 RF Microwattmeter 3 3 OPERATING CONTROLS INDICATORS AND CONNECTORS 3 4 The controls indicators and connectors used during
19. 2 GHz to 4 GHz 4 GHz to 12 4 GHz 12 4 GHz to t8 GHz THERMOCOUPLE SENSORS 51016 7E 10 MHz to 18 GHz 14W to 10 mw 10 MHz to 15 MHz 500 301 10 d8m 15 MHz to 10 GHz N M 10 GHz to 18 GHz Thermocouple Pulse Charactensucs at 25 C Maximum pulse energy 5 W usec Maximum puise power 1 W Maximum puise duration at maximum puise cower 5 usec 51017 8E 10 MHz to 18 GHz 10 uW to 100 mw 200 mw 10 MHz to 15 MHz 500 201 20 dBm 23dBm 15 MHz to 10 GHz N M 10 GHz to 18 GHz Puise Characteristics at 25 C Maximum puise energy 30 W usec Maximum puise cower 15 W Maximum pulse duration at maximum puise power 2 usec WAVEGUIDE SENSORS 50135 4K 18 GHz 026 5 GHz 10 nW 10 10 mw 100 mw 18 GHz to 26 5 GHz 1 3 60 pw 120 WR 42 50 10d8m 20 8 UG 595 U 51972 WRO 18 GHz t0 40 GHz 10 nW to 10 mw 18 GHz to 40 GHz 200 pw 60 pw 120 ow wRD180C24 5010 10 dBm 51036 4Ka 10 AW to 10 mw 100 mw 26 5 GHz to 40 GHz 15 pw 30 pw WR 28 5010 10 dam 20 68m UG 599 U 51037 140 10 nw to 10 mw 100 mw wR 22 010 10 dBm 20 08m UG 383 U 51045 4U 40 GHz to 60 GHz 10 nW to 10 mw 100 mw 40 GHz to 60 GHz WR 19 50 10 dBm 20 dBm UG 383 U 51046 4 10 aW to 10 mw 100 mw wR 15 50 to 10 dam 20 dam UG 385 U 51047 4W 75 GHz to 110 GHz 32 nw to 10 mw 75 GHz to 110 GHz WA 10 45 to 10 dam UG 387 U NOTES Wil wihstana short periods of overioad extended
20. 42 dB 63 1 nW 1 50 d8 10 nw 10 52 6 51 60 dB 1 nw For the serles 4 and 5 sensors add 10 dB to the Internal and apparent levels For the series 6 sensor add 20 dB to the Internal and apparent levels g Bus Availability When the Model 4200 15 sent a string It does not normally tie up the bus wnile responding to the string other bus communications are possible during the Interval The 4200 can Inform fhe controller when 1 Is finished by use of the Service Request see paragrpah 8 12d If this 15 desired The Model 4200 can however be made to lock up the bus whlle it is responding to a string If such action Is desired by sending It two strings in succession even If the second string 15 only a Null command Example zero command wrt 716 77 Followed by a talk command 716 A 8 C A 4 13 TIME RESPONSE CHART Refer to Tables 1 5 for the Model 4200 sensor measurement through the 488 Bus A 14 REMOTE PROGRAMMING NOTE If Is assumed that the user Is acqualnted with GPIB principles and terminology Refer to the controller Instruction manual for the syntax needed to create specific bus commands and addressing sequences All examples given apply to the HP 9825 calculator A 15 Bus Programming Syntax The bus programming syntax mirrors the front panel keystroke sequence closely Each key has been assigned an alphanumeric character and sending that character 15
21. L WAVEFORM sr 4 4200 4 2 5mw INPUT ALL 2mS 0lV 9200 700mv eu TRIGGER AT TP A6 INPUT MODULE P C BD Pt 32 OPTION P251 t _ TO 1 6 13 14 PINE 2 Tor Y 8 IC6 13 14 PINIO 3 02 82 TO 1C6 13 14 PIN 9 4 3 03 5 8e 24 8723 a 211 or r3 1000 9 aie ADDRESS 17 724 V 4 2M 0 lt 4458 CC ao 5 1 16 23181 L u 12 100 13 lt RIN 5 14 15 ca 10 16 05654 1C3o ire 040338 nO LM3OIAN AA 20 2 3140 z lt A ouT IN 2 iC RE GNO a 23 lt AMB255 451 8 25 so a2 2 7 i 26 15 28 29 AS PING 3 32 33 lt 34 35 36 37 24 LM301AN 7 50x AN SV v SEE NOTES a0 e 25 321 SS 4 44 NOT USED ON CHANNEL 2 I PREISE CONNECTS TO CONNECTS TO SCHEMATIC ERE 8D 2 RESISTANCE VALUES IN OHMS 5 Test point ALWIB J23 25 A20W20429 321 0831271 SHT oF UNLESS OTHERWISE SPECIFIED ON FRAME SCHEMATIC ON FRAME 3 CHANNEL AOD JUMPER ONLY 832271 831099 CHANNEL 2ADO JUMPER 4 SHT 1 Remove 08312712 Sh 7 Figure 7 6 Input Module Board A6 Schematic Diagram Sheet 1 of 2 7 15 7 16 TEST POINT WAVEFORM SOLID RANGE 0 1 2 Z 10045 A ssov B
22. OJ 10 00 TV OV 10 or OU A 21 Suppose that it is desired to store the current power level in dBm into the dBm reference so that all future readings will be referenced to the current value Allowance must be made for the possibility that the APPENDIX A OPTION 4200 01A current value Is a dB relative value To do this the current dB value must be read the existing d8 reference must be recalled the true dBm value must be computed and this value must be stored into 48 reference calculator could be instructed as follows red 716 V S wrt 716 R red 716 X S V X Y wet 716 Y R Note that R Is used twice In the program the first time to obtain the existing value for the d8 reference and the second time to store computed value Also note that the two read statements red each fetch a different value the first value Is the power value in dB and the second Is the d8 reference 22 Output Data Format data output of the Instrument consists of two numeric values The first Js the numeric data In the display and the second Is the status Information The normal data output wlll have the following format abcsddddEsd S R tc Where ab mode power In milliwatts Pw 88 0M d8r DR c channel A 1 B 2 C 3 s sign or dddd data four digits each digit 0 9 Esd exponent sign digit data del Im ter S status digit no error entry too small
23. Revised January 15 2009 INSTRUCTION MANUAL MODEL 4200 6 21 MICROWATTMETER SERIAL NUMBERS975 AND ABOVE BOONTON ELECTRONICS CORPORATION 791 ROUTE 10 RANDOLPH NJ 07869 TELEPHONE 201 584 1077 TWX 710 986 8215 7 87 P N 991006000 Printed in U S A SAFETY SUMMARY The following general safety precautions must be observed during all phases of operationand maintenance of this instrument Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design manufacture and intended use of the instrument Boonton Electronics assumes no liability for the customer s failure to comply with these requirements THE INSTRUMENT MUST BE GROUNDED To minimize shock hazard the instrument chassis and cabinet must be connected toan electrical ground The instrument is equipped with a three conductor three prong a c power cable The power cable must either be plugged into an approved three contact electrical outlet or used with a three contact to a two contact adapter with the green grounding wire firmly connected to an electrical ground at the power outlet DO NOT OPERATE THE INSTRUMENT IN AN EXPLOSIVE ATMOSPHERE Do not operate the instrument in the presence of flammable gases or fumes KEEP AWAY FROM LIVE CIRCUITS Operating personnel must not remove instrument covers Component replacement and internal adjust ments must be made by quailfied maintenance personn
24. T z 2 gt u 2 z Section VII Schematic Diagrams 41 2 DETECTOR CABLE Amphenol 80 MC2M CNA type Male Plug Figure 7 8 Options Schematic Diagram 7 2 7 22 APPENDIX OPTION 4200 01 APPENDIX A 488 BUS INTERFACE OPTION 4200 01A 1 DESCRIPTION 2 1 488 GPIB bus Interface option permits external confrol of the Instrument and data capture by a wide variety of compatible controllers Instrument may be operated with other GPIB compatible devices to achleve specific test automation goais with no specialized control Interface requirements for proper electrical operation 5 Although no standard GPIB Interface data formats have yet been established cer tain common practices are achieving de facto standard status These practices have been adhered to In the design of the 4200 01A option Interface formats and delimiters thereby assuring the user of format com patibility with almost al controllers 4 CAPABILITY 5 Certain subsets of full GPIB functions are specified in the 1 488 1978 Standard The Model 4200 01A option Includes the following capabilities SHI SOURCE HANDSHAKE complete capability ACCEPTOR HANDSHAKE complete capability T6 BASIC TALKER SERIAL POLL UNADDRESS IF MLA NO TALKER ONLY capability NO EXTENDED TALKER capability 4 BASIC LISTENER UNADDRESS IF NO LISTENER ONLY
25. When the power supply rises to a level approximately 150 millivolts below its nominal value either as a result of correction of the undervoltage condition or of power turn on signal RESET is deactivated to permit execution of the stored program by the microprocessor 4 34 DETAILED THEORY OF OPERATION DISPLAY P C BOARD See Figure 4 5 4 35 The display printed circuit board contains the instrument LED display meter annunciators keyboard and control circuits for these items It interfaces directly with the control printed circuit board When anv keyboard key is pressed the microprocessor on the control printed circuit board interrupts the normal measurement process and accepts and stores the key entered commands the microprocessor also supplies digital data to the display printed circuit board to cause keyed in numerical values to appear on the LED display the microprocessor resumes the normal measurement process when any of the termina tor keys dB LIMITS CAL FACTOR SELECT REF LEVEL dB is pressed Upon completion of the measure ment by the microprocessor measurement values are sup plied to the display printed circuit board 4 36 Operation of the display printed circuit board is controlled by the microprocessor through integrated circuit 1C18 on the control printed circuit board which provides the following functions a It provides a RAM for storage of microprocessor output data to the display printed circuit board
26. is to be adjusted press the 2 and SELECT CHNL keys if channel 2 is to be adjusted 4 Press the MODE PWR key 5 Press the 0 and CAL FACTOR dB keys 6 Press the 0 and REF LEVEL dB keys 7 Press the ZERO key 8 After zeroing is completed set the control board bit switch to CALIBRATE MODE and press in order the 1 0 0 0 and RANGE AUTO keys 9 Release the range calibrator ZERO 10 Line by line set the range calibrator and press the instrument keys as listed in Table 5 24 Disconnect the range calibrator and set the control board bit switch to OPERATE MODE 33 AC Calibration Two types of data are stored in the instrument non volatile memory for each sensor that is calibrated with the instrument low frequency gain correc tions and high frequency gain corrections or calibration factors The calibration factors are marked on the sensor housing The low frequency gain corrections are of two types a gain factor for each range and a gain correction for each range Any sensor procured independently of the in strument must have its low frequency gain data entered and stored in the non volatile memory Entry of high frequency gain correctians is not absolutely necessary because calibra tion factors can be read from the sensor housing and entered through the instrument keyboard while using the instru ment however if the capability of making automatic high frequency gain corrections as a function of frequenc
27. rated Digital circuit troubles can be localized rapidly and accurately using the signature analysis maintenance tech nique thereby reducing instrument down time A diagnos tic ROM P 961003 is available from Boonton Elec tronics Corporation for signature analysis maintenance 1 7 ACCESSORIES 1 8 The following accessories are supplied with the instrument a AC power cord b Sensor cable 1 9 The Series 4200 sensors are not supplied with the instrument and must be ordered Refer to Table 1 2 for the sensor characteristics 1 10 If the instrument is ordered with sensor s the sensor calibration data is programmed into the instrument at the factory If additional sensor s are required after the instrument is in the field the new sensor calibration data can be field installed 1 11 OPTIONS 1 12 The following options are available for the instrument a Rack mount hardware kits b 01A IEEE Bus Interface c 01 IEEE Bus interface d 03 Second Input Channel e 04 Rear Input f 06 Internal TMA MATE Requires 01B Option g S 17 Two Inputs On Front Panel Requires 03 Option 1 13 Information concerning the Option is included in the Appendices of this manual 1 14 Please direct all special instrument applications questions to the Applications Engineering Department of Boonton Electronics Corporation 1 15 SPECIFICATIONS 1 16 Performance specifications listed Table 1 1
28. time required to complete the autozero cycle will be returned The result phase FTH after autozero 15 always zero unless an error Is belng reported E 30 In addition to syntax errors the following messages may be generated No error lt 0 gt 4444 lt gt lt 1 gt b Instrument not SETUP FO7PWMOn MOD POWERMETER NOT SETUP lt cr gt lt I f gt Instrument not CLOSED FO7PWMOn MOD POWERMETER NOT CONNECTED lt gt lt 1 gt Note d ascii numeric digit 0 9 E 31 RESULT FETCH measurement value is requested by the command FTH POWR lt gt lt 1 gt E 32 The instrument will determine if a settled reading was possible within the settling time limit reported to the controller during the INX command The measurement value is tested against the maxi mum and minimum limits established during the SETUP command If no errors occur the reading is loaded into the output buffer otherwise an error message is loaded E 33 Execution of the FTH command also returns the 4200 to CLOSED and not INITIATED status Any number of successive INX FTH measurement cycles may be performed while still CLOSED 54 addition to syntax errors the following messages may be generated No error so 0 ddddEsd cr l f b Instrument not SETUP FO7PWMOn MOD POWERMETER NOT SETUP cr lf c Instrument not CLOSED FO7PWMOn MOD POWERMETER NOT CONNECTED lt cr gt lt f g
29. to 0 dBm b Press the RANGE HOLD key and the MODE PWR key Ascertain that the LED display readout is 1 000 mW 11 2 d Set the adjustable power source output to each of the following levels in succession and ascertain that the See Instruction manual supplement corresponding listed LED indications obtained the instrument Power Source Level Instrument Indication 10 mW cc04 power level too high mW 1 000 mW 100 pW 0 100 mW 10 pW 0 010 mW or 03 if less than 10 counts power level too low e Press the RANGE AUTO key NOTE When the range hold function is selected input power levels greater than the power decade operative when the selection was made will result in overranging of the instrument and display of an error indication lower input levels result in a decrease in the number of significant digits in the display Note that the decimal point and annunciator remain fixed 3 40 Basic Instrument Accuracy Test To check the basic accuracy of the instrument proceed as follows a With zero input to the sensor adjustable power source turned off zero the instrument by pressing the ZERO Key b Connect the sensor to the POWER R EF connector Press the CAL key c Upon completion of calibration press the MODE dB key and connect the sensor to the adjustable power source d Set the output level of the adjustable power source to each of the following dBm values in succession a
30. 0 for software code 314BC TABLE 5 6 CONTROL BOARD ROM 1 TEST Signature Analyzer Switch Connection Bit Switch Measurement Function Setting Point 1234567 8 Point Signature START STOP CLK Setting This test checks the program content of ROM 1 for software code 365BC Section V Maintenance TABLE 5 7 INTERFACE BOARD ROM 2 TEST Signature Analyzer Switch Connection Function Bit Switch Setting Point 123 45 67 8 Item Measurement Point Signature 4 Common Any setting SV ICI ICI ICI ICI ICI ICI This test checks the program content of ROM 2 for software code 322 Signature analyzer connection points are on control board measurement points are on interface board d Check ta sce that data bus connector on the control board is installed in socket Jl and that jumper PS on the control board is connected to connector 15 e Turn on input power to the instrument f Perform the specific test procedures provided in Tables 5 7 through 5 22 For each of the programmed signature analvsis tests make signature analyzer connections and switch settings as listed in the appropriate table Then set the bit switch on the control board as specified Connect the signature analyzer probe to the specified measurement points and compare the signatures ob tained on the signature analyzer with those listed in the table 8 Notethatin each signature analysis test
31. 0 0147 100 33883 250 CER 68pF 10 600 16546 0712 68 C14 PE 0 01uF 10 907 56289 192P1039R8 cis CER 0 01uF 100 33883 250 C16 CER 68 10 600 16546 DTZ 68 CAP CER 2200 10 250 16546 CF 222 cis 0 01uF 10 80V 55289 192P1029R8 c19 CER 330pF 10 600 16546 321 620 O luF 10 100 27735 11 1 10 100 622 0 1 10 100 27735 11 1 10 100 23 CER 33pF SZ 1000 56289 19TCC 033 25 CER 33pF 5 1000 56289 10 033 C26 CER 1000 10X 600 16546 102 Section Parts List BEC PART NUMBER 283336000 536024000 534214000 534139000 534122000 345021000 345020000 535809000 534215000 536809000 475042000 554335008 477327000 472362000 528047000 341392000 341391000 341412000 341365000 465230000 423019000 423019000 HUMBER 535012000 535034000 535012000 535050000 535062000 535029000 535050000 224139000 283336000 224139000 234092000 224314000 2241392000 224310000 200531000 224119000 224312000 234092000 224119000 224312000 224309000 234092000 224313000 234148000 234148000 224139000 224139000 224310000 6 3 Section Parts List 042230018 042230028 MODEL REFERENCE 4200 6 2 Replaceable Parts Continued OPCODE 0 REV DESIGNATOR DESCRIPTION RAP C27 34 C35 C36 C37 IC1 IC2 IC3 Ics IC6 8 169 1
32. 10 dB Requires 24 VDC 6 Pwr Supply 50 Attenuator Midwest Microwave 389 or Weinschel Mod 2 HP Model 355C or equivalent Attenuator 5 1 Section V Maintenance 5 11 Signature analvsis checks are of two basic types free running and stimulated or programmed free running checks the data bus between the microprocessor and the system is opened and an instruction that will cause the microprocessor to free run is forced The microprocessor then runs through its address field repeatedly Free running checks may be used to check the following a Microprocessor address output b Memory select decoding 1 0 select decoding d ROM program 5 12 In the stimulated mode the data bus between the microprocessor and system bus is left intact and programs provided in a special ROM are invoked to conduct the desired tests In this instrument the stimulated mode is used to check the following a RAM operation b Display functions and scanning c Kevboard d 1 O ports 5 13 In this instrument programmed signature analy sis tests are activated by setting a bit switch located at the rear of the control board to the number associated with the particular test In using signature analysis the free running tests should be performed first to ascertain that the microprocessor is putting out a normal address field that the memory and O decoding is correct and that the ROM contents are norma
33. 15 paragraph 5 55 APPENDIX OPTION 4200 03 C 9 MAINTENANCE 10 The procedures used to Isolate malfunctions to the channe 2 Input module are similar to those described for the 1 Input module 1 Section V Refer to paragraph 5 22 Signature analysts tech niques are used to Isolate defective parts on the channe 2 Input module convenlence the signature analysis Information for the channel 2 Input module s Included In Section V Refer to Tables 5 19 5 20 5 21 and 5 22 44 REPLACEABLE PARTS 45 Table 6 2 11515 all the replaceable parts and Includes Reference Symbol Description Mfr s Part and the BEC Part No for the channe 2 Input module which s Identical to the channel 1 Input module P N 042220018 46 SCHEMATICS C 47 Refer to Figures 7 6 Sh 1 and 2 Input Module Board Schematic Diagrams for the channel 1 and channel 2 schematics and parts location diagram APPENDIX D OPTION 4200 04 APPENDIX D REAR INPUT OPTION 4200 04 D 1 DESCRIPTION 0 2 Rear Input option 4200 04 provides a second power sensor connector on the rear panel for those applications where sensor connection to the rear of the Instrument may be more convenient The second power sensor connector Is connected In parallel with the front panel SENSOR connector Refer to Figure 7 8 D 3 OPERATION 0 4 operate an Instrument equipped with the 4200 04 option c
34. 151 ha NC ORG o 15 55 os i oe isi Scr ren ee 52 16 og n 6 17 171 or 17 8 ice 81 142 9 a S35 k i 7 7 T 5 5128 T 10 TO CIS PIN 9 A BH Se mu ay Ay 32 32 6 6 si 6 TO 1C13 PING ats 3 A2 A2 az fa re ICIS PIN s 534 Ay 341 34 414 4l 4 4 4 m ains ii T 1613 PIN 3 As zi Ay 182 5 PESTS an TI As F h as 2 e icis Pmi g s 9 3 22 NIPE 22 ET 22 22 22 25 a ag Siz a A 9 97 9 40 19 19 19 19 19 19 10K lig au a z Dh ax us 5 os 2v 9 SE 4 fj 5 2 ICIS PIN S 417749 a 20 E 5 2 0 181 260 CPU Se Z wc 12 9 5 9 s t a 2 s 2 8 24 1Ctd DO A D t NOTE 3 SEE NOTE 5 251 24 TO 1 14 3 TO 1 5 9 22 gt or TO 1 158 2 1694 283904 ses 486 TO iCISe PINIO ICISb PINI 2 164 E y P4 9 PIN 4 MALT SNTALSA2N MON 4 9 I GMD Six c TO ICi6 PIN s 15 8 TO P4 15 PIN6 Cie TR PAVA TO TO iCI6 pins M 5 7404 Ct She gt ROM 1F ei 1 52v TO 1614 pins 2
35. 27014 DS8863N IC8 11 DISPLAY NUMERIC 3082 7653 28480 5082 7653 41 SOCKET 16 06776 ICN 163 S3 G METER MARKED 090 700 098 P1 CONNECTOR 6 PIN STRAIGHT POLAR 27264 22 04 2061 P2 HEADER 2 RT ANGLE 06383 5100 2 01 TRANS NPN 2N5088 BLUE 04712 2N5908B R4 RES MF 9 09 1 174i 19701 5043 09 090 RS RES MF 8 87 1 1 4 19701 5043 8 8 0 R6 RES MF 15 0K 17 1 4 19701 5043 015 00 RES MF 4 75 1 1744 19701 5043 04 750 51 26 5 PUSHBUTTON SPST 31918 210272 XIC6 SOCKET IC 14 PIN 05776 ICN 143 S3 G X1C8 11 SOCKET IC 14 PIN 06776 ICN 143 3 G 04223001B OPCODE 0 REV PWA INPUT AND PWA INPUT 03 OPT 04223002B MODEL 4200 REFERENCE FED MANUFACTURER DESIGNATOR DESCRIPTION CODE PART NUMBER ARI 3018 AMP 27014 LMZOTAN 3118 OP COMPARATOR 27014 LM311N ARS IC 301A AMP 27014 LMTOTAN AR4 3140 02735 CA3140AE ARS 6 IC 3568 SELECTED 04901 535062900 AR CG IC SELECTED LF356 OPAMP 04901 535079000 ARS 9 IC 3140 AMP 02735 CAZ140AE CER 5 1000 56289 1070 2 EL 10uF 20 25 54217 5 25 10 CER 33pF 5 1000 56289 107 C4 PE 0 01uF 10 80V 56289 192P1039R8 cs CAP CER 15000 10 600V 16546 151 6 CER 33pF SX 1000 56289 1070 c8 CER 000 10 600V 16546 102 9 CAP MICA 1500pF 1 500 14655 0015001520 2
36. 3 8 3 23 Calibrating the Instrument 3 8 3 24 Error Messages 22 ir Ere SSE VSD 3 9 3 25 Measurements EO TE ET ET T LLL LU de Bodnar TD 3 9 3 26 Making Power Measurements 3 9 3 27 Low Level Measurements 3 9 3 28 High Level Measurements 22 3 9 3 29 High Frequency Measurements 3 9 3 30 Temperature Effects 3 9 3 31 SWR Measurements 5 ce dub eos ere sow mace di ed dul s 3 9 3 32 Shielding Recommendations 3 11 3 33 Analog O tput PD 3 11 3 34 Minimum Performance Standards 3 12 3 35 Test Equipment Required 2 4 3 12 3 36 Preliminary Setup cc eS CR BOS m he C 3 12 3 37 Automatic Zero Function 3 12 3 38 Autoranging Mode 3 12 3 39 Range Hold Function Test 3 12 3 40 Basic Instrument Accuracy 3 13 3 41 Power Mode Test Daw Malek ie Oe ee vrac A AE
37. 30 During the measurement process the CPU must retrieve data from storage and from the input and display printed circuit boards it must store temporary calculaton values and it must output data to the input and display printed circuit boards To retrieve data from memory the storage device and data location are defined by the address supplied by the CPU and signals MREQ and RD are activated Integrated circuit 1 decodes three of the address bits to activate signal CS at RAM IC8 through gates IC9a and 1C9c Signal OE at RAM IC8 is activated through gate ICI5d and data stored at the location speci fied by the remaining address bits are transmitted over the data bus to the CPU or to other circuits connected to the data bus To access data developed by circuits outside the control printed circuit board the CPU activates signals IORQ and RD along with the appropriate address lines Decoder 4 decodes three address bits to develop ena bling signal CS for interface ICI6 integrated circuit IC18 or interface ICI on the input printed circuit board as specified by the three address bits and gate ICI5bactivates signal RD for the read function If integrated circuit IC18 is Section IV Theory of Operation enabled keyed in commands from the display printed cir cuit board which had been stored in integrated circuit 1C18 are transmitted over the data bus If integrated circuit IC16 is enabled input data from bit switch SI or powe
38. 341184000 325916000 BEC PART NUMBER 042232008 535018000 283351000 283352000 283336000 283334000 283329000 224296000 283334000 532013000 532014000 530151000 535044000 534205000 477345000 477327000 477327000 6 2 Replaceable Parts Continued De 562 PUA POWER SUPPLY MANUFACTURER PART NUMBER 5043 010 00 5043 04 990 SO43ED2K21 0F S043ED12K70F 72 500 5043 04 990 5043 1 000 0436045380 72128100 5043 0464 0 0456010000 683315 5043 05 110 5043 02 210 5043 02 8000 504 5 110 SO43EDS1Kt OF SINK ASSEMBLY MANUFACTURER PART NUMBER UA7TSMGUIC UA7IMGUIC UATSGUIC ua 9MGUIC AD CG SWITCH CABLE UNIT MANUFACTURER PART NUMBER o 572 2121 0103 010 PANEL UNIT MANUFACTURER PART NUMBER 09 04223100C OPCODE 0 REY MODEL 4200 REFERENCE FED DESIGNATOR DESCRIPTION CODE RI RES MF 10 0K 14 1744 19701 R2 RES MF 4 99K 1 174 19701 RES MF 2 21 14 1 44 19701 R4 RES MF 12 7 1 1 44 19701 R RES YAR 500 OHM 10 0 38 73138 R6 8 RES MF 4 99K 1 1 44 19701 R9 RES MF 1 00K 14 1 44 19701 R10 RES MF 453 1 19701 R11 RES VAR 100 OHM 104 0 5U 73138 R12 RES MF 464 OHM 1 19701 R13 RES MF 100K 1 t 4U 19701 R14 RES COMP 330 OHM 5 01121 15 RES MF 5 11 1 1244 19701 R16 RES MF 2 21K 1 1 44 19701 R17 RES MF 2 80K 1 174W 19701 R18 RES MF 5 11 t
39. 4 n t9 n 4 BOONTONM 4200 RF MICROWATTMETER EFFI 21141212 MODE RANGE LTS CAL Figure 1 1 Model 4200 Microwattmeter Section I Introduction SECTION I INTRODUCTION 1 1 INTRODUCTION 1 2 This instruction manual provides general informa tion installation and operating instructions theory of operation maintenance instructions and parts list for the Model 4200 R F Microwattmeter I3 DESCRIPTION 1 4 The Model 4200 15 microprocessor based solid state RF microwattmeter The instrument is capable of measur ing RF power levels from nW 60 dBm to IW 30 dBm for a frequency range of 0 2 MHz to 110 GHz The instruments calibrated power level and frequency range is determined by the Series 4200 sensor used with the instru ment The Series 4200 sensors are accessories and must be ordered per application Refer to Table 1 2 for the Series 4200 sensor characteristics 1 5 The Model 4200 is designed to perform the following Operations a Low power transmitter signal generator and oscil lator measurements b SWR and return loss measurements with directional couplers and slotted lines c Gain and insertion loss measurements d RF attenuation and SWR measurements e Antenna measurements 1 6 The Model 4200 design features are as follows a Wide Frequency Range 0 2 MHz to 110 GHz The calibrated frequency range of the instrument is determ
40. 4200 018 ditions are established with a short at the test port of the directional coupler 8 31 Use of Hold Measurement Q Trigger T and Measurement Complete SRQ V Commands An example of the use of these commands using an HP85 Controller Boonton Electronics Model 1020 Signal Generator and Model 4200 RF Microwattmeter follows Statement 10 TQVCHK 20 REMOTE 7 CLEAR 30 OUTPUT 703 Comment Program name Enable remote clear display Set Model 4200 N1SODOROQOVAB nel 1 sensor 1 CAL 40 OUTPUT 702 7141010017 50 OUTPUT 703 60 OUTPUT 702 OL 10 70 ENTER 703 A 80 PRINT A 90 DISPLAY PRESS CONTINUE FOR T COMMAND 100 PAUSE BEEP 110 OUTPUT 703 T 120 ENTER 703 A 150 PRINT A 140 OUTPUT 703 00 150 DISP PRESS CONTINUE FOR 1V COMMAND 200 PAUSE 8 BEEP 210 OUTPUT 702 010 220 WAIT 1000 FACTOR dB 0 REFER dB nold Indicatlon measurement complete SRQ autorange mode dB display mode Set Model 1020 MHz output level of 0 d8m output on Set Model 4200 to hold indication mode Set Model 1020 to 10 dBm level Read model 4200 store jn A Print model 4200 Indication Display prompt on Model 85 Stop program Issue beep press continue Send T trigger com mand to Model 4200 Read model 4200 Indication store In A Print model 4200 indication Set Model 4200 for indication hold auto r
41. 716 AB Note that the sequence is unimportant except that each function executes n the order It 16 received the bus B 19 Suppose that the Instrument 15 to be zeroed automatically and then asked to send the reading In the PWR and RANGE AUTO mode The HP 9825 calculator could be Instructed as follows wrt 716 APZ red 716 5 The automatic zeroing cycle time Is approxi mately 10 to 22 seconds depend Ing on range Until zeroing Is com pleted the Instrument wiii be unable to respond with new data The first iine of the preceding Instructions sets the operating mode and Initiates the zeroing cycle The last iine reads the response from the Instrument The Instrument response con sists of two numeric values the first value Is the front panel reading and the second Is a status value normally zero These two numbers will be stored In the calculator varlables storage locations V and S Note that each data transmission from the Instru APPENDIX B OPTION 4200 018 ment consists of two values When the status value 15 non zero indicating an error con dition the data value 111 be set to zero The program will normally test the status value to assure valld operating conditions 8 20 Store Recall Functions Syntax The general syntax for store recall functions is the same as the front panel sequence If a numeric value Immediately precedes the func tlon that value will be stored otherwise the existing store
42. Alternatively wrap a piece of thin copper foil around the threaded portion of the connector body and crimp the foil around the open end of the connector making certain that the center pin of the connector is not shorted If frequent zeroing in strong noise fields is necessary Construct adapter using N connector permanently fitted with a copper foil shield 3 33 Analog Output dc voltage proportional to either power or dBm is available at rear panel recorder connector J20 for recorder or other applications This output voltage will be affected in both power and dB Instructlon manual supplement modes by calibration factor entries The source resistance of the recorder output is approximately 9000 ohms permitting a current of mA into a load of 1000 ohms at full scale power Output levels for various measurement modes as follows In the power mode the dc output level is proportional to the displayed power with 10 volts at full scale for each range b Inthe dB mode the dc output level is proportional to dBm according to the formula Series 4 7 K KA Q Sensors VOUT 8 volts Example The voltage output at 20 dBm would be 8 ao volts 6 volts This output is a function of dBm only but is affected by CAL FACTOR entries 3 11 Section III Operation c Inthe Channel 3 mode of operation Option 03 the recorder output is proportional to the difference in d
43. C F dB dE C F dB C F dE C F dB C F dB C F dE C F dB 11 14 15 16 17 ig 19 AUTO AUTO AUTO AUTO AUTO AUTO AUTO AUTO AUTO AUTO 11 8 iz u 5 0 14 0 15 0 15 0 17 0 18 0 18 0 GHz GHz GHz GHz GHz GHz GHz GHz GHz 68 4259 4257 16 420 19 2 00 18 18 C F dB C F dB C F dB dB CHS CHS C F dB CHS CHS C F dB C F dB C F dB BIT SWITCH 1 CLOSED BIT SWITCH 2 CLOSED SAMPLE CALIBRATION CERTIFICATE BOONTON ELECTRONICS CORP SENSOR MODEL 6E S 16 DATE 3 3 87 SERIAL NUMBER 13525 FREQ REF COEFF SWR CAL FAC GHz RHO dB 1 00 0 012 1 02 0 13 2 00 0 007 1 01 6 55 3 00 0 018 1 03 0 44 4 00 0 026 1 05 0 43 5 00 0 028 1 05 0 25 6 00 0 021 1 04 0 55 7 00 0 024 1 04 0 65 8 00 0 030 1 06 0 73 8 00 0 025 1 04 0 87 10 00 0 005 1 01 0 78 11 00 0 010 1 01 0 68 12 00 0 005 1 00 0 38 13 00 0 014 1 03 0 57 14 00 0 028 1 05 0 16 15 00 0 055 1 05 0 20 16 00 0 043 1 10 0 18 17 00 0 055 1 13 0 00 18 00 0 045 1 09 0 18 Sensor data is within specifications BOONTON CALIBRATOR DC Range Calibrator Model 2500 series instruments 7 E 6 1 Boonton Model 25A PURPOSE AND USE OF EQUIPMENT The Model 25A is a precision solid state instrument designed to pro vide accurate 1 MHz signal levels required in the calibration of all Boonton RF microwattmeters Model 41 and 42 series Full scale and incremental values for each range are provided allowing verificati
44. CONNECTOR 5 PIN RT ANG NOD 04901 005 R1 RES MF 1 00M 12 1744 14874 SOJ4SEDIMOOOF 12 RES MF 20 5 OHM IX 144 19701 504 2 R3 4 RES MF 4 75 Iz teat 12781 5043 RES NETWORK 4 7K 2X 8M 0112 2145472 RAZ RES 22K Z 1 7W 01121 4035223 a Gh me N oc PART NUMBER 545507000 429394000 479320000 479123000 446091008 BEC PART NUMBER 235216000 283336000 530058000 479350000 47733300A 345020000 46530007A 53432200H 534168000 534152000 534283000 534237000 534286000 534287000 473053000 423043000 423052000 473065000 PART HUMBER 477523008 341500000 541150000 541365000 545020000 535044126 6 2 Replaceable Parts Continued 422250908 OPCODE 4 REV EB PUR INTERFACE 4220 018 MODEL 4200 REFERENCE FED MANUFACTURER DESIGNATOR CESCRIFTION CODE FART HUMBER ATY 21 SMITCH DIP SPST 8 PIANO LAM BT e 2 1 2 82 55 INTERFACE 34371 cegecssa 2 4 IC 74 04 HEX INVERTER 02735 74 04 2 us IC 7785 SUPPLY VOLTAGE SUPYR 295 05 01295 1 us IC DUAL D TYPE FLO 02755 CDrsHCT4E 1 UF 2 PU CMOS TOSHIS 1 us EPROM PROG 452AA 4200 04901 53445200A 1 09 10 QUAD 2 INPUT OR 02735 CDr4HCZz2E 2 utt IC S954 CMOS 29 DIP TOSHIB 5554 5 1 7T4HC12
45. FRAME SCHEMATIC 831271 SHT OF 7 97 831099 4 Q TEST POINT 5 USE JUMPER A FOR I6 K ROM OR JUMPER B FOR 32K ROM Figure A 2 Interface Board A23 Schematic Diagram 11 12 APPENDIX OPTION 4200 018 APPENDIX 488 BUS INTERFACE OPTION 4200 018 B i DESCRIPTION B 2 The EEE 488 GPIB bus Interface option permits external control of the Instrument and data capture by a wide varlety of compatible controllers The Instrument may be operated with other GPlB compatibie devices to achleve specific test automation goals with no specialized control Interface requlrements for proper electrical operation B 3 Although no standard GPIB interface data formats have yet been established tain common practices are achieving de facto standard status These practices have been adhered to In the design of the 4200 018 option interface formats and delimiters thereby assuring the user of format com patibility with almost all controllers 8 4 CAPABILITY B 5 Certain subsets of full GPIB functions are specified In the IEEE 488 1978 Standard The Model 4200 01B option Includes the following capabilities SHI SOURCE HANDSHAKE complete capabillty ACCEPTOR HANDSHAKE complete capability 6 BASIC TALKER SERIAL POLL UNADDRESS IF MLA NO TALKER ONLY capability TEO NO EXTENDED TALKER capabllity LA BASIC LISTENER UNADDRESS IF MTA NO LISTENER ONLY capability LEO NO EXTENDED LISTENER capabillty
46. IEEE 488 bus compatible signals into control codes that operate the internal control bus of the nstrument It also con verts instrument gara nto IEEE 488 com patible signals for use the bus All data transfers are handled by source and acceptor handshake protocols as defined by E 488 1978 A 34 Detailed Description Refer to Figure A 1 All data manipulation and IEEE 488 bus management are controlled by CPU A5IC3 on the Instrument control board In conjunction with micro program stored PROM 2301 on the Interface board Al data transfer Is handled in parallel to parallel mode by adapter 2304 Latch 2505 handles transfer ot bit switch data that defines the Instru ment address and message termination charac tors to the Instrument dafa bus 8 Bi directional buffers A23U6 2307 handle data and control signai transfers respec tively between adapter A23U4 and the inter face buses 55 When the Instrument 15 turned the RESET line to adapter 2304 IS set low while capacitor 25 1 charges through pull up net work A23U1 thereby clearing the adapter Initiate an Interface transaction signal ROM IF is set low by CPU ASIC3 thereby enabling the output of PROM 2301 Interface Instructions from the PROM memory location specified by the address bits from the CPU are written onto the Instrument data bus The CPU executes these instruc tions and activates
47. IFRA MEASUREMENT NORMAL POINT WAVEFORM OSCILLOSCOPE TRIGGER CONNECTED TO TP4 HORIZONTAL SCALE 2mS DIV ICS PIN 10 RANGES 0 1 2 100 uS RANGES 3 THROUGH 6 800 uS NOTE ALL WAVEFORMS OBTAINED WITH POWER SENSOR TO MODEL 25A POWER CALIBRATOR MODEL 25A SET AS FOLLOWS OUTPUT LEVEL 2 51 mW 52 2 25V AT TP1 ON INPUT P C B MEASUREMENT POINT PINS 2 PIN 10 163 PIN 11 1C3 PIN 9 NORMAL WAVEFORM OSCILLOSCOPE TRIGGER CONNECTED TO IC3 PIN 9 HORIZONTAL SCALE 5mS DIV 095 Section V Maintenance MODE SET ROCKER IN TRUE T OR OPEN O POSITION d ROCKER IN FALSE F OR CLOSED C CHANNEL SELECT SET x m Ea Rec L 2 L a SENSOR SELECT SET ENABLES DISABLES USE OF SWITCH WITH IEEE 4888 BUS CLOSED FOR NORMAL OPERATION Switch Setting Comment e np C x i ce 7 T foe ei ars ce Ce 1 fe tre cians open ee L efef elo mee L 01 Five Sensor Cab cse ojoje ojojo BUR _ 51 eje oj e o semo Figure 5 3 Control Board Bit Switch Settings nx Omtuc dH 5 7 Section V Maintenance TABLE 5 2 CONTROL BOARD ADDRESS FIELD TEST Signatur
48. NOTE Potentiometer R24 is omitted in later instruments 12 If no further adjustments are to be performed set the control board bit switch back to operate mode See Figure 5 3 Section V Maintenance c Chopper Adjustment The preceding offset adjust ments must have been completed before chopper adjust ment is attempted To perform the chopper adjustment proceed as follows 1 Allow the instrument to warm up for at least 30 minutes 2 Connect the instrument and test equipment as shown in Figure 5 5 3 Set the instrument controls as follows a Set the control board bit switch for calibrate mode 1 See Figure 5 3 b Press the 1 and SELECT CHNL kevs on the kevboard if the channel chopper is to be adjusted press the 2 and SELECT CHNL keys if the channel 2 chopper is to be adjusted c Press the 0 and RANGE HOLD keys on the keyboard 4 Set the range calibrator controls to range 0 and 5001 source resistance and press the ZERO button 5 Using the digital multimeter measure the voltage at test point TP9 on the input module Adjust potentiometer R4 and potentiometer 5 on the chopper board equally to obtain a reading from zero to 100 millivolts but as close to zero as possible NOTE Considerable fluctuation in the digital multi meter indications will be observed during the voltage measurements in the preceding step The fluctuation is caused by noise thermals etc Mental averaging of the indic
49. REF LVL dB 5000 0 MODE dB 6dBmt 251mW 4 HOLD 2 5 CAL O HI REF LVL dB 5000 0 MODE dB 7dBm 5 001mW 5 HOLD 5 0 CAL 0 HI REF LVL dB 5000 0 MODE dB 19dBm 79 4mW 6 HOLD 7 9 CAL 0 HI REF LVL dB 5000 0 MODE dB 0 HOLD 0 REF LVL dB 0 HI 0 HOLD 0 REF LVL dB 0 HI FOR 7E AND 8E SERIES SENSORS Allow 5 2 source Press settling 20dBmi10 02W 0 HOLD 9 9 9 9 MODE dB 1 HOLD 9 9 9 9 MODE dB 2 HOLD 9 9 9 9 MODE dB 3 HOLD 9 9 9 9 MODE dB 4 HOLD 0 REF LVL dB 0 HI 5 HOLD 0 REF LVL dB 0 HI 6 HOLD 0 REF LVL 4 0 Record Display 5000 CAL 0 HI REF LVL dB 10dBm 1004 W CAL 0 HI REF LVL dB 5000 OdBm 1 00mW CAL O HI REF LVL dB z 5000 lOdBmt10 0mW CAL 0 HI REF LVL dB z 5000 Increase level by 10 dB for 8E sensor Section V Maintenance TABLE 5 26 DOWN SCALE SENSOR CALIBRATION DATA FOR 4A 4B 4C 4 5B SE AND 6E SERIES SENSORS 25A or SOMHz Reading True Reading Downscale Correction 60dBm 1 00nW 1 00nW Range 0 50dBm 10 00nW 10 00n W 40dBm 100 0nW 100 0nW Range Range 2 30dBm 1 0001 W 1 000 Range 3 204 0 00 W 10 00 W Range 4 10dBm 100 0u W 100 0 W Range 5 3dBm 2 00mW 2 00mW Range 6 levels should be increased by 10 dB for SB and SE sensors and 20 dB for 6E sensor FOR 5G SERIES SE
50. SERIES 4200 A SENSOR Section I Introduction Table 1 3 Model 4200 and DIODE SENSORS Measurement Speed through the IEEE Bus Starting Level dBm 10 dB Power Step 20 db Power Step 30 db Power Step 50 db Power Step 4K 4 40 4U 4 iw Increasing i Decreasing Increasing Decreasing Increasing Decreasing Sensors nos ows wa osos na 25 oss NA VA N A Na oss Na 1 Measurement Speed is the time required to make measurements within 0 1 dB of final value on the ending range using HP 85 controller free run access time is 55 ms 18 measurements per second 2 These are typical speeds in seconds using the Display Hold command measurement mode 3 With dual channel operation i e with Option 03 installed the measurement rate is two sets of readings per second TABLE 1 3 MAXIMUM RESPONSE CHART 2 FOR INSTRUMENT AND 4240 SENSOR Cont 1 10 Section I Introduction Figure 1 2 Outline Dimensions Installation SECTION II INSTALLATION 2 1 INTRODUCTION 2 2 This section contains instructions for the installation of the Model 4200 RF Microwattmeter 2 3 INSTALLATION 2 4 Unpacking The instrument is shipped complete with sensors if ordered and is ready for use upon receipt Packaging details are shown in Figure 2 1 Unpack the instrument carefully and inspect it for
51. SRI SERVICE REQUEST capability RLI REMOTE LOCAL capablilty LOCAL LOCKOUT capabillty PPO PARALLEL POLL capability DCO DEVICE CLEAR capability DTI DEVICE TRIGGER capability co NO CONTROLLER capability MLA MTA My Listen Address My Talk Address 8 6 INSTALLATION B 7 Option 4200 018 consists of interface board A25 Electrical interconnections are shown in Figure 7 8 Install the Inter face board proceed as follows a Turn off power to the Instrument b Remove the screws that secure the top cover of the Instrument and slide the top cover back and off Cut the cable tie In the Instrument that holds the extra power plug the plug with two blue wires and one black wire d Remove the six screws that fasten the control board and replace them with the six mounting posts supplled with the 01 package e Position the Interface board the Instrument so that the mounting holes In the Interface board Ine up with the mounting posts the instrument Attach the face board to the mounting posts with six 4 40 screws and lockwashers supplied with the Interface board f Connect the 40 ribbon connector to the front edge connector of the interface board 4 Connect the power plug In the Instrument to the 4 brown connector on the interface board B 8 OPERATION 9 Address Assignment Before using the Instrument in the GPIB If must be assigned unique addre
52. Schematic Diagrams 1 9 5 5082 7653 5082 7653 mI b e d e g do 9 NOTE 3 VA E Ct MAC M MSD uso 2 26 CONNEC s TO A3WI9 4128 ON FRAME AI 5 4 3 2 831271 SHT 1 OF 7 5082 7653 Figure 7 2 Display Board 2 Schematic Diagram 1 5 7 6 B831274A Section VII Schematic Diagrams CALIBRATOR P C BD AE m R2 4 H hee 2 C4 tl 470 3 5 18 4 74H 3 5 S E 8 R6 R9 680 R3 k M qI cil 12 100K 3 7 2N3904 T T 3 5 18 R8 w CRS 4 IK MV 650 ds I RI4 1 75 25 E RIO ca CRI IOK lt HSCH 1001 L L 2 N pes D ADSBIJH es 7 1 RI R4 RT R12 1500 IK 2 43K evt 1 2K 31 L i Ee RE E LR E aaa Ses se E B831274A 46 ee ge ELE ge ae 1000 Q NOTES RN Ji 26 I CAPACITANCE VALUES IN pF UNLESS CONNECTS TO OTHERWISE SPECIFIED JI 26 A2 P2 26 2 RESISTANCE VALUES IN OHMS 15 ON FRAME SCHEMATIC 831271 3 EXTERNAL MARKINGS SHT OF 7 4 LAST NUMBERS USED ci2 R15 5 NUMBERS NOT USED R5 D831271A Figure 7 3 Power Reference Board Schematic Diagram NOTE NOTE 2 831045G NOTE L CRI AND
53. Section I Introduction 1 17 OUTLINE DIMENSIONS 1 18 Outline dimensions of the instrument are shown in Figure 1 2 TABLE 1 1 SENSOR CHARACTERISTICS 48 51011 SP Uu 4 51012 4 51013 4G 51051 5E 51015 6E 51033 7 51016 8 51017 4K 51035 WR0 180 51972 4Ka 51036 S1037 4U 51045 av 51046 aw 51047 60 tnw 50 40 30 True AMS Calibrated in RMS See Instruction manual supplement Ar jaa Gu 500 Zes a Z sio i kHz 218 500 ANS K 10 2 18 Ef q Coax a 246 20 TOnW 100nW 14W 10uW 100407 imW 10mW 100mw NAAN N NNNNNA NSN Ne n 100 ies 1 75 2 Coan os NS 22265 GHz 50 2 Coax SMA OS NON a 18 GHz 509 Coax NN 277777 NT Z z AAA ANANS GEN Z Z NNN GHz SN 10 0 10 20 30 40dBm 10w Peak Calibraled in RMS Transition Section I Introduction TABLE 1 1 PERFORMANCE SPECIFICATIONS Cont x m NN RANGING Autoranging plus hold on range BASIC MEASUREMENT A Basic Uncertainty includes all instrumentation noise zero and shap ACCURACY The total accuracy ing errors and includes 0 7 power reference setting error of the M
54. another sensor the data already in storage for one of the sensors must be over written b Serial number type and attenuation data for the new sensor must be entered into non volatile memory See Sec tion 5 33 c Gain factors and gain corrections for the new sensor must be developed entered and checked A calibration source is required for this function See Section 5 33 d Calibration factors versus frequency which are shown on the barrel of the sensor must be entered into non volatile memory See Secton 5 36 5 39 Bit Switch Setting For Additional Sensor To de termine the correct bit switch setting for the new sensor proceed as follows a If the number of sensors for which data is already stored is unknown select sensors in sequence through the keyboard until an error indication CC02 appears on the instrument LED display For example press the and SELECT SENS keys the 2 and SELECT SENS keys the 3 and SELECT SENS keys and the 4 and SELECT SENS keys b When an error indication is returned press the SELECT SENS key a second time if the LED display does not indicate the last selected sensor number it can be as sumed that no data has been entered in non volatile memory for this sensor number Set the control board bit switch Figure 5 3 to accept the sensor number that produced the error indication and mark this sensor number on the sensor barrel 5 40 Calibration of Model 4200 4C Sensor The cali
55. any signs of shipping damage Should any damage be noted notify the carrier and the factory immediately NOTE Save the packing material and container for possible use in reshipment of the instrument 2 5 Mounting For bench use choose a clean sturdy uncluttered surface See Figure 1 4 for space require ments For rack mounting an accessory package part number 950000 is available to mount one instrument and another package part number 950001 is availableto mount two instruments side by side 2 6 Power Requirements The instrument has a tapped power transformer which permits operation from 100 120 220 or 240 volt 10 50 to 400 Hz single phase power sources Power consumption is approximately 24 volt amperes at 60 Hz 2 7 Cable Connections Interconnecting cable con nections required depend upon the options installed and the system applications of the instrument A line cord and sensor cable are supplied with the instrument Any other cables required must be supplied by the user Cable connec tions that may be required are as follows Figure 2 1 Packaging Diagram 2 1 Section II Installation a Sensors The sensor cable supplied with the basic instrument connects directly to the front panel SENSOR connector and the sensor that is to be used for power measurements connects directly to the other end of the sensor cable Although the sensors are insulated against extreme temperature variations it is a
56. be cleared 4 40 Analog DC voltage which is proportional to the measured power level is supplied from the control printed circuit board to drive the front panel meter to provide a relative indication of measured power for peak ing and nulling applications This also supplies a DC analog voltage to rear panel connector This signal be used to drive an external recorder 4 41 DETAILED THEORY OPERATION POWER REFERENCE P C BOARD See Figure 4 6 DC ANALOG SIGNAL FROM INPUT P C BOARD VIA CONTROL P C BOARD FROM 218 CONTROL P C BOARD 16 40 50 S 52 DECIMAL POINT DRIVER G 831465 A R4 RS RESISTIVE NETWORK IC4 Pi iT DC ANALOG VOLTAGE TO RECORDER LEO DISPLAY EI AUTO LO 7 CAL FACTOR dB FACTOR GHzj 516 g n SENS S N SELECT CHNL ANNUNCIATORS COLUMNS 3 CHi CR3 523 CLR LCL 524 t s o R3 KEY CCMMANDS TO ICI9 ON CONTROL BOARD 4 cam ROW ROW 2 ROw 3 ROW 4 P O Jt RS T R4 9 i 2 12 13 1 RO 14 Section IV Theory of Operation Figure 4 5 Display P C Board Detailed Block Diagram 4 11 4 12 4 42 The circuits on the calibrator printed circuit board are used to develop a 1 mW reference power level witha 50 ohm source resistance This reference level can be used for automatic calibration of t
57. calibrator set to range 5 and R 500k or with instrument sensor connected to POWER REF connector and POWER REF ON switch set to on TABLE 5 20 INPUT MODULE CHANNEL 2 1AIO TEST Signature Analyzer Switch Connection Bit Switch Measurement Setting Point 123 45 67 8 Item Point Function Signature CLK f TPS Common 0000 5V 876P PAO pin 4 4852 pin3 1433 PA2 pin2 F8SP pin 5H7U PA4 pin 40 OFFI PAS pia 39 FIOC 6 38 9091 PAT pin 37 4 81 This test checks the operation of I O port A on input module 2 Correct signatures depend on the proper operation of both the control board and input module 2 O open closed Signature analyzer connection points are on the control board measurement points are on input module board 5 15 Section V Maintenance TABLE 5 21 INPUT MODULE CHANNEL 2 1BIO TEST Signature Analyzer Switch Connection Bit Switch Measurement Function Setting Point 1234 5678 Point Signature Common 5V 18 19 20 21 22 23 24 25 This test checks the operation of I O port B of input module 2 Correct signatures depend on proper operation of both the control board and input module 2 O open closed Signat
58. equivalent to pressing that front panel resulting operation Is Indistinguishable from local control Numerical values are translated by the GPIB interface so that commonly observed formats may be used Fixed formats and floating point formats may both be used These representations are converted to their equivalent fixed point values and the sign Information Is post fixed automatically thereby ensuring that natural notations for numbers will be accepted by the Instrument A 16 Suppose that 15 desired to set the instrument to the PWR mode The HP 9825 calculator could be programmed wrt 716 P The wrt Instructs the calculator to send data on the bus to one or more Isteners The number following Is the address infor mation 7 is the calculator address and 16 15 the instrument address all examples In fhis appendix will use 16 as the Instrument address although any valid address can be assigned to the instrument When the calcu lator Interprets the first part of the line It wil assert the line to signify that commands or addresses wll be sent on the bus Following that It will send three bytes or characters Unlisten the calcula tor Talk Address and the instrument Listen Address This information will configure both the calculator and the Instrument for the data transfer After the last command byte has been accepted will be released to the false state by the calculator All Informatio
59. flops IC7a and IC7b and these flip flops supply the drive signal to the chopper circuits Flip flop IC7a also drives flip flops IC8a and IC8b which provide a 94 Hz synchronized drive signal to the demodulator circuits that convert the amplified AC signal back to a DC signal CRIO2 NOTE Section IV Theory of Operation 4 19 Amplification of the balanced AC signal from the chopper is accomplished in an input amplifier composed of low noise operational amplifiers AS A6 and A7 A balanced arrangement with degenerative feedback for stabilization and gain control is employed The input AC signal is amplified 500 50 5 or 0 5 depending upon the instrument range Demultiplexer 6 under control of the control printed circuit board adjusts the degenera tive feedback in accordance with the range selected by the microprocessor to provide the required sain switching An attenuator at the output of the input amplifier provides attenuation of 2 for the highest range only on all other ranges its attenuator is zero This attenuator is switched into the circuit on the highest range through solid state switches IC10a IC9b and 1 9 Demultiplexer decodes digital signals that define the range from the micro processor and activates the solid state switches on the highest instrument range 4 20 The amplified 94 Hz signal is converted to a DC analog signal by means of a demodulator circuit that operates in synchronism wit
60. for the syntax needed to create specific bus commands and addressing sequences All examples given apply to the HP 9825 calculator 15 Bus Programming Syntax The bus programming syntax mirrors the front panel keystroke sequence closely Each key has been assigned an alphanumeric character and sending that character Is equivalent to pressing that front panel key The resulting operation is Indistingulshable from local control Numerical values are translated by the GPIB interface so that commonly observed formats may be used Fixed formats and floating point formats may both be used These representations are converted to their equivalent fixed point values and the sign Information Is post fixed automatically thereby ensuring that natural notations for numbers will be accepted by the Instrument 8 16 Suppose that 1 Is desired to set the Instrument to the PWR mode The HP 9825 calculator could be programmed wrt 716 The wrt instructs the calculator to send data the bus to one or more 1 Isteners The number following Is the address infor mation 7 15 the calculator address and 16 15 the instrument address all examples in this appendix wil use 16 as the Instrument address although any valld address be assigned to the Instrument When the calcu lator Interprets the first part of the line it will assert the line to signify that commands or addresses will be sent on the bus FoilowIng that It w
61. gr 06 086 07 6 lt 087 x AO ABO 5 K S 3 RE gt MBOX lt U4 2 4 I 74HCO4 IN 30 SCHEMATIC INTEKFACE 851459 01A NOTES I CAPACITOR VALUES IN UF UNLESS OTHERWISE SPECIFIED 2 RESISTANCE VALUES IN OHMS UNLESS OTHERWISE SPEC 3 USE JUMPER A WHEN ISA 2K ROM USE JUMPER B WHEN UII IS A 8K ROM 4 LAST NUMBER USED R8 C 2 Ul8 44 NUMBERS NOT USED RS RG R7 C4 C5 UID Figure 2 25 Interface PC Board Schematic and Component Location Diagram Sheet 1 of 5 B 13 14 re 10 UF 25V 2 5V GND SEN VCC L2 RIN RES AT5K 11 z REF GND lex deg IO TICU T I TL7705 SCHEMATIC MATE INTERFACE 5145 gt gt b gt Ip n 1 N a gt gt PPD APPENDIX OPTION 4200 018 0821 ABO Figure 5 D A23 Interface PC Board Schematic Sheet 2 of 3 8 15 16 APPENDIX OPTION 4200 018 Co PO je SEM SEN 74HC240 Ll 445 4 LUTEA 080 081 082 083 084 5V 085 DEE 046 017 75160A Je 087 2 i lt 0101 ABS 3 6 0103 0108 4 14 3 0106 5 13 0107 T 0108 A 20 sy AB2 TORD TOWA U18 751614 19 2 4 m om m NDAC i NDAC NDAC XINT 24 NAFO ENRFO NRFD TEST DAV DAV Tx EOI PEO
62. of the instrument 4 6 Input Module Theinput module receives the DC voltage developed by the sensor Operating under control of the control module the input module converts the DC signal to an AC signal amplifies the AC signal converts the amplified AC signal to an analog DC signal and converts the analog DC signal to a digital signal If the autoranging function of the instrument is being used the gain of the amplifiers in the input module is adjusted automatically by the control module to accommodate any power level within the range of the instrument The digital output signal of theinput module is supplied to the control module for further processing an analog DC output signal is developed from the digital signal and applied to the analog meter on the display module for relative power measurements and to a rear panel connector for application to a peripheral recorder 4 7 Control Module The control module consists primarily of a pre programmed microprocessor The microprocessor accepts and stores measurement para meter commands entered through the front panel key board and controls operation of the internal circuits of the instrument in accordance with its program and keyed in commands The microprocessor performs measure ment value corrections based on stored zero corrections and stored or keyed in sensor calibration factors unit conversions based on selected measurement modes and dB limit determination The microprocess
63. of the instrument Test equipment of equal capability may be substituted for any listed item except the model 5004A signature analyzer unless it is known that the substitute signature analyzer agrees completely with the model 5004 and the model 2500 range calibrator NOTE A Diagnostic ROM Kit P N 961003 is available for use in troubleshooting the Instrument The following Two Calibration Data Cartridges are available for use with the Instrument P N 961008 1 for use with the HP 9825A and P N 961008 2 for use with the HP 85B The Calibration Data Cartridge can be used for testing the GPIB printing out the contents of non volatile memory and DC and AC calibration Instruc tions are included with the kit and Data Cartridges 5 7 TROUBLESHOOTING CONCEPT 5 8 The instrument employs both analog and digital circuitry The digital portion uses a microprocessor in a bus oriented system DC and AC measuring instrument such as voltmeters and oscilloscopes have been the traditional test instruments for electronic instrument maintenance however in a microprocessor based bus oriented system such test equipment while still useful and necessary leaves much to be desired With such test equipment alone troubleshooting in a bus oriented system is extremely tedious and time consuming if not impossible A new technique called signature analysis has been devised to deal with microprocessor based systems and the troubleshooting proced
64. on the Instrument data bus Is then transferred through adapter 2504 and buffer 2506 to the Interface data bus For data transfers from the Interface data bus to the instrument data bus signal WR Is Inactive and signal RD is active Signal TE to buffer A23U6 is deac tivated by adapter A23U4 to reverse the direction of data transfer through the buffer A 39 MAINTENANCE 40 General The Interface board does not operate alone but rather conjunction with the Model 4200 If Interface operation beco mes abnormal It should first be determined 14 the 4200 operates normally without the Inter face If It does proceed according to the followIng paragraphs 41 Physical Inspection Check the Inter face board visually for loose or broken con nectors foreign material etc A 10 42 Voltage Checks With the board Installed In the 4200 and all connectors place check the suppiy and iC voltages according to the values shown on the schema tic diagram Figure 2 45 Active Device Substitution All the active devices are socketed making replace ment simple Replace each device one at a time and check for restoration of proper performance by the instrument 44 Troubleshooting oscilloscope while not the most useful tool for troubleshooting bus oriented microprocessor systems still may be used to determine acti vity or lack of activity on the address data and control lines 45 RE
65. part or all of the equipment Do not proceed bevond a CAUTION sign until the indicated conditions are fully understood and met The WARNING sign denotes a hazard lt calls attention to an operation procedure WARNING practice or the like which if not correctly performed or adhered to could result in injury or loss of Do not proceed bevond a WARNING sign until the indicated conditions are fully understood and met Indicates dangerous voltages TABLE CONTENTS SECTION I INTRODUCTION Paragraph Page 1 1 Introduction 5225 25 Qu Gq Sa a Se D eee S Qa 1 1 1 3 Description PR P 1 1 1 7 ACCESSOTI S 1 2 1 11 er e hu aye aa Vn e e P qu E qus edet d e ak p 1 2 1515 Specifications Ss sh ere ed EDS Rte Edu ue eue UE Ged 1 3 1 17 Outline Dimensions ex ese Se Roe EOS 1 3 Paragraph Page 2 1 Introduction 5 uuu v EQ REN Se EN AW 2 1 2 3 Installation ta eR wovon erae e rao uude b ods qa ER aei ede peu od eroe d 2 1 2 4 Unpacking 52 Sate Eu o uS LE Sec ERES es dg eges 2 1 2 5 MOURLUTI Duro ku u m EN SEN aya saus 2 1 2 6 Power Requirements oe s E IR bbs oN RE EE 2 1 2 7 Cable Connections 222250224 e a
66. power for the corresponding display and the corresponding row of annunciators At the same time digital data that define the display segments and the annunciators that arc to be activated are supplied to decoder The binary coded input is decoded by decode and the output lines of the decoder are activated in accordance with this decode The outputs of the decoder activate the individual anodes of the selected display and the individual annunciators in the active annunciator row thereby providing the appro priate instrument display A decimal point signal is applied through transistor Ql when appropriate to cause decimal point to be displayed to the right of the character on the active dispiay 4 39 Demultiplexer 1C2 also provides scanning signals to the keyboard As each of its first five output lines is activated in sequence a scan signal is applied to an individual row of the keyboard through an inverter 1f any key in the row being scanned is pressed a signal 15 supplied to one of the column output lines to the RAM in integrated circuit ICI9 on the control printed circuit board and the key command is stored by the RAM Key selection is defined by a combination of the row scan signal and the column output line The RAM can store up to a maximum of eight key commands and it delivers this stored information to the microprocessor when it is read Actuation of more than eight key commands without a read causes the RAM to
67. q 2 1 SECTION III OPERATION Paragraph Page 3 1 Introduction bess oS eter Er EU Be Rue Hr aue ei 3 1 3 3 Operating Controls Indicators and Connectors 3 1 3 5 Sensor Calibration Dita era ee a 3 3 7 Power Application RR EE We OEE ee 3 1 3 9 Preliminary Checkout 4 ps ee des sed 3 1 3 11 Operating Instructions 3 5 3 12 Measurement Parameters 3 5 3 13 Use of Numerical Keys v ek ik a er ee Swe Be Pee sa aa 3 5 3 14 SELECT Function 55 es ergs as ar moe o e Antal ce 3 5 3 15 MODE Selection SS 3 6 3 16 RANGE Selection Ge P cap 3 6 3 17 LIMITS dB Selection so eb 3 6 3 18 CAL FACTOR Selecion sok Lats rr dear P wa sr She RD Re e a tee 3 6 3 19 REF LEVEL dB Selection 4 unu 3 7 3 20 Entry Limits oh RA PP PNG E Iur e E Ria a q ONE Hyun Bodine 3 7 3 21 Recall of Entered Values eer edi eee Ser 3 7 3 22 Zeroing the Instrument d vu vae a Suay
68. subsequent operations i Zero the 4200 by pressing 0 HOLD ZERO Wait for the completion of the zeroing process digit display indi cates ceee then returns to numeric display j To adjust the full scale gain set the Model 25A or 50 MHz source and 4200 as listed in Table 5 25 k Set 25A or 50 MHz source for no output Set the con trol board bit switch to OPERATE MODE and press RANGE AUTO ZERO To calculate the down scale corrections set the Model 25A or 50 MHz source and 4200 as listed in Table 5 26 NOTE There is a one to one relationship between the counts entered for the downscale correction X and the correction which results Example True reading 1 000 pW Display reading 1 006 pW Downscale correction 6 Always use whole numbers the idea is for dis play reading to equal true reading True reading 10 00 pW Display reading 9 95 pW Downscale correction 5 m To enter the downscale correction refer to Table 5 27 and set the bit switch to CALIBRATE MODE 2 n Set the bit switch to OPERATE MODE and check accuracy o f after checking accuracy there are out of tolerance conditions the quality of each range may be changed as follows Example OPERATE MODE input 44 dBm Display reads 44 30 dBm The difference is 30 counts low In dBm mode there is twenty to one relationship between the counts entered for full scale correction and the correction which results 20 x 30 600
69. the control board circuits it provides amplification and signal processing required to develop an analog DC voltage and a digital signal that are proportional to the input power level The input DC signal from the sensor is balanced in form and may vary from microvolts to volts depending upon the input power level The input printed circuit board must provide amplification with a wide range of gain low offset voltage and low noise therefore the input DC signal is converted to an AC signal which is amplified and the amplified AC signal is converted to a DC analog signal and to a digital signal 4 17 The input DC signal is converted to AC signal by a chopper module which plugs into the input printed circuit board The chopper is composed of solid state switches Cla ICIb and ICId in a balanced arrangement operating at a frequency of approximately 94 Hz to minimize AC line and line related component interaction The chopper drive signal is derived from the output of an astable multivibrator which is completely independent of line frequency The use of a solid state chopper eliminates many of the problems such as contact wear and contamination associated with electromech anical choppers The chopper supplies a balanced AC signal of approximately 94 Hz to the input amplifier 4 18 The 94 Hz drive signal for the chopper is derived from the output signal of astable multivibrator ICS Multivibrator ICS drives flip
70. the control signals required to perform the commanded interface transaction A 36 Instrument address and message ter mination character data manually preset into bit switch 2551 15 suoplied to latch A23US To read the switch data controi signals R and CSIF and address bit A6 are activated thereby enabling the latch output through gates A23U2c and A23U2b and inverter A23U3c The switch data is then transferred through the latch to the instrument data bus 57 read incoming Interface control sianals the CPU activates signals RD and CSIF and sets address bit low The Inter face control signal port of adapter 2304 15 selected through address bits AO Al and A5 Adapter A23U4 15 enabled through gate A23U2a Because signal RD Is active signal TE supplied by the adapter to buffer A23U7 15 inactive and this buffer fs set up for data transfer from the Interface control signal bus the control signal port of adapter 2504 Incoming interface control signals are transferred through buffer 2507 and adapter A23U4 to the Instrument data bus Clocking of adapter operations is controlled by the clock signal from the instrument control board Interface control signal transfer the opposite direction is achieved by reversing the states of signals RO and WR An active WR causes signal TE to buffer A23U7 to become active thereby reversing the direction of data flow through the buffer Interface control signals from t
71. the operation of the instrument are listed in Table 3 1 and shown in Figures 3 and 3 2 3 5 SENSOR CALIBRATION DATA 3 6 Calibration corrections for sensors ordered with the instrument are written into microprocessor storage at the factory before shipment of the instrument and sensor A copy of this information is stored under the right side cover When the CAL FACTOR GHz function of the instrument is used during measurement the microprocessor reads and interpolates the stored data on the basis of the specified measurement frequency and corrects all measurement values accordingly The microprocessor memory has stor age capacity for calibration data for up to eight sensors Calibration corrections vary for different sensors therefore if sensors are to be substituted or added in the field calibra tion data for these sensors must be written into memory in the field in order for the CAL FACTOR GHz function to be accurate Refer to paragraph 5 37 for calibration data entry procedures 3 7 POWER APPLICATION 3 8 The busic instrument is designed for operation from a 100 120 220 or 240 volt 50 to 400 Hz single phase ac power source To apply ac power proceed as follows a Determine the line voltage at the ac power output receptacle b Set the two slide switches on the rear panel to conform to the available ac line voltage c Check the rating of the fuse in the rear panel fuse holder For 100 or 120 volt operation th
72. thesignature analvzer probe is first checked on common ground and then on 5 volts If the specified signatures are not obtained for these checks do not proceed further sub sequent signatures cannot possibly be correct Recheck all signature analvzer connections and switch settings h Both visual and signature analysis tests are provided for the display and keyboard ofthe instrument The visual check should be made first because it is fast and simple if the visual check is satisfactory the signature analvsis test may be omitted i If an incorrect signature is obtained at any point replace the integrated circuit or other active device most intimately associated with the node at which the incorrect signature is obtained All integrated circuits and transis tors in the instrument are socket mounted for easy removal and replacement If the signature is still incorrect after all active devices have been checked all passive devices connected to that node should be suspect 5 10 j Upon completion of all tests disconnect all power to the instrument Replace ROM Ul on the interface board the option is installed or replace the 01B board if installed Remove the diagnostic PROM from the control board and replace ROM IC6 and 1C7 k Restore the bit switch Figure 5 4 to the settings recorded at the start of signature analysis tests 5 24 NON VOLATILE RAM CIRCUIT TESTS 5 25 Non Volatile RAM Test To test non volat
73. to 1 0 mW b Select the power mode and autoranging c Enter a 0 dB calibration factor d Note the indication of the LED display If the indi cation is not 1 000 mW press the CAL Kev and ascertain that the indication is now 1 000 mW z2 counts 4 counts with 4200 5 sensors e If an indication of exactly 1 000 mW is obtained originally in step d enter a calibration factor of 0 03 dB to cause the indication to increase to approximately 1 01 mW Then press the CAL key and ascertain that the indication changes to 1 000 mW 2 counts Enter a 0 dB calibration factor and press the CAL key to restore the original indication f The automatic CAL function is operative at all 10 dB points if suitable signal source is available operation is as in steps a thru e except for the input signal level and range NOTE For greatest overall accuracy however it is sirongly recommended that this feature be used with the 50 Section III Operation MHz power reference which provides an accurate mW level 3 43 Sensor Selection Test Entry of the correct number for the sensor in use is absolutely essential for instrument accuracy Data for each sensor supplied with the instrument has been entered and stored in micro processor memory at the factory Stored data consists of functions peculiar to each sensor such as sensitivity calibration factors etc A direct absolute check of the sensor data is not possible however the basic ins
74. 0 MICROWATTMETER Care should be taken to make sure the SWITCH is configured per instructions The SWITCH is located under the top cover of the 4200 in the rear left corner Also be certain that the numbers you enter agree EXACTLY with the numbers on the printout Data is entered TOF TO BOTTOM LEFT TO RIGHT If a mistake is made depress the CLEAR BUTTON and start at the top of the entry again NOTE C F dB IS DEPRESSION OF THE CAL FAC dB BUTTON R L dB IS DEPRESSION OF THE REF LVL dB BUTTON SWITCH 1 BIT SWITCH 2 CLOSED i SBSH 1000 1 z 4 6 GHNE LO AUTO HOLD HOLD HOLD HOLD HOLD HOLD HOLD 1001 1001 998 995 1000 994 R L dB F L dB R L dB R L dB R L dB R L dE R L dB SWITCH 1 OFEN SWITCH 2 CLOSED speme dente oreen 1 AS 1 0010 2 SENS HI C F dE GHz SWITCH 1 CLOSED SWITCH 2 OFEN 1 2 4 HOLD HOLD HOLD HOLD HOLD HOL D HOLD 4600 4500 4657 4682 4718 4649 4855 R L dE R L dE R L dB R L dB R L dB R L dE 4 1 dE 4 4 4 9 11 DHS CHS CHS CHS CHS CHS Hi HI HI HI Hi HI e 1 3 4 amp 7 10 AUTO AUTO AUTO ALTO AUTO AUTO AUTO AUTO AUTO AUTO AUTO 1 2 z 0 A 4 0 3 0 6 7 0 g 0 9 0 180 Hx GHz GHz GHz GHz GHz GHz GHz GHz GHz e id a ded 44 443 mer d 79 87 78 C F dB C F dB
75. 0K 1 174W 19701 SO43ED 0K00F 1 341400000 R8 RES MF 5 11K 1 2 1744 19701 04550510 1 341368000 89 11 RES MF 4 75 1 1744 19701 0655504750 3 341565000 1 SWITCH ROCKER SPST DIP 31073 765808 1 465225000 SOCKET 40 PIN 06776 ICN 406 S4 TG t 473052000 1 5 3 SOCKET 24 06776 ICN 245 S4 G 473045000 SQCKET 40 PIN 05776 ICN 405 S4 TG 1 73052000 SOCKET 40 PIN 06776 ICN 496 S4 TG t 473052000 1 50 16 05776 165 55 6 1 473042000 042362018 OPCODE 0 REV UNIQUE CONFIG PARTS 4200 MODEL 4290 REFERENCE FED MANUFACTURER DESIGNATOR DESCRIPTION CODE PART NUMBER QTY PART NUMBER IC EPROM PROG 3658 4200 04901 53436500 1 53436500H IC7AS IC EPROM PROG 3148G 4200 04901 53431400 1 534314008 6 2 6 2 Replaceable Parts Continued N A p Cal 04235800C OPCODE 0 REV Cx CG PWA DISPLAY MODEL 4200 REFERENCE FED MANUFACTURER DESIGNATOR DESCRIPTION CODE PART NUMBER C3 4 CAP EL 1047 20 25V 64217 6 25 10 CR1 13 LED RED DIFF 5032 4584 29490 HLMP 1301 74C48 BCD 7 SEG DECODER 27014 MM 4C4SN IC2 IC 40518 8 CHAN MULT DEMULTPL 02735 4051 IC3 IC 40494 HEX BUFF 02735 CD4049AE IC4 RES NETWORK 100 OHM 2 1 8U 01121 3168101 Ics RES NETWORK 4 7K 2 1 8U 01121 3168472 1 6 DISPLAY NUMERIC 5082 7653 28480 5082 7653 1c 8863 ORIVER
76. 1 3 1 CAL FACTOR GHz 3 8 5 0 and CAL FACTOR dB keys If calibrating a 4200 8E sensor press in order the 1 3 2 CAL FACTOR GHz 3 8 5 0 and CAL FACTOR dB kevs MODEL 4200 RF MICROWATTMETER DIGITAL MULTIMETER SENSOR DIGITAL MULTIMETER COMNECTS REAR PANEL CONNECTOR J20 Figure 5 6 Test Setup for Recorder Output Adjustment 5 21 Section V Maintenance TABLE 5 24 DC CALIBRATION TEST Range Calibrator Range 0 0 RANGE HOLD 3 6 8 5 MODE dB Range 1 RANGE HOLD Range 2 2 RANGE HOLD Range 3 3 RANGE HOLD Range 4 4 RANGE HOLD Range 5 5 RANGE HOLD Range 6A 6 RANGE HOLD Allow Record Press settling Press Display CAL REF LEVEL dB CAL REF LEVEL dB CAL REF LEVEL dB CAL REF LEVEL dB CAL REF LEVEL dB CAL REF LEVEL dB CAL REF LEVEL dB S N 975 and above 80 series software is used set Range to 6B SN 1186 and above set to range 6B If calibrating 4200 5B E series sensor press in order the CAL FACTOR GHz 1 0 0 0 and CAL FACTOR dB keys If calibrating 4200 5G series sensor press in order 6 5 CAL FACTOR GHz 1 0 0 0 and CAL FACTOR dB keys g Enter the last four digits of the sensor serial number by pressing the appropriate keys followed by the dB LIM ITS HI 1 0 0 0 and RANGE AUTO keys NOTE Pressing N and then HOLD selects range N h Set the control board bit switch to CALIBRATE MODE 2 for
77. 1 SHT OF P4ti l CONNECTS TO Ar WI14 281141 ON FRAME SCHEMATIC IHN 12 PUT 5 GNO 3 2 Vin vo 2 ett ic2 2200 A78MGUIC 35v 1 COM CONT COM Vin Ps 12 CONNECTS TO AUWI2 121 SCHEMATIC 831271 SMT 15 CONNECTS TO 1 15 515015 ON FRAME SCHEMATIC wATBGUIC CONT 163 vo 164 CONT ote 1 23v v REF 3 RI 5 100 25 R2 499K Rit 100 RI2 464 P Tiel CONNECTS TO ALWIG Ji6 161 ON FRAME SCHEMATIC 831271 SMT 1 OF 7 P8289 CONNECTS TO i w20 228128 ON FRAME SCHEMATIC ais 2 2 RIT 2 801 100 59102 CONNEC S TO CAE LE STERSE ON FRAME SCHEMATIC 831271 SMT 1 OF 7 Pig 231 Connects TO 21 429129 ON FRAME SCHEMATIC Seu SETI Ves 5 gt 02 CLK2R 831271 831271 83127 85i 27 OF 7 SHT 1067 SMT 1 OF 7 SMT 1 oF 7 NOTES ALL CAPACITANCE VALUES iN AF UNLESS OTHERWISE SPECIFIED 2 ALL RESISTANCE VALUES IN OHMS 3 Q TEST POINT 4 LAST NUMBERS USED S NUMBERS NOT USED 92 E831271A RESET Pata 5 ic 6 040 38E 5 Nut 3 RIS Six i8v 2521 na reas rors T 5 5 Petts Section VII Schematic Diagrams 15 6 isv A b LM339N Ge 15 5 52 52 VREF 5
78. 17 17 17 18 19 20121 25 25 24 30 4C 51012 Max 13 RSS 9 13 4E 51013 13 30 35 RSS 13 i 18 19 4G 51051 13 30 5 35 RSS 13 17 1 7 SE 51015 13 1 30 35 RSS 13 i 17 17 18 6E 51033 Max 13 3 0 35 35 RSS 13 t7 17 18 7 51016 0 13 30 35 35 55 0 13 j 18 18 1 9 8E 51017 Max 9 13 3 0 35 35 40 RSS 0 13 18 18 18 19 1 2 1 Reference Frequency 50 MHz Note CAL Factors supplied at every 1 GHz Waveguide Sensor Calibration Factor Uncertainty Over Ret At Over Sensor Sensor Ref Sensor Bw GHz Freq BW 4K 51035 40 51037 4 51046 WRO 180 RSS RSS 51972 4Ka 51036 4U 51045 4W 51047 Max 9 Max Max Max RSS RSS RSS RSS Note For waveguide sensors the reference calibration is at 20 dBm D Power Reference Uncertainty Power reference accuracy is 1 2 worst case for one year 0 to 55 C When calculating the sum of the uncertainties only include 0 5 for the power reference as the remaining 0 7 is included in A above 1 5 Section I Introduction TABLE 1 1 PERFORMANCE SPECIFICATIONS Cont POWER REFERENCE Source Internal 50 MHz oscillator with Type N female connector on front panel Power output 1 00 mW factory set to 0 7 traceable to National Bureau of Standards 1 2 worst cast for one
79. 2 15 and 15 volts de for system operation b Generates a power up signal for the microprocessor when supply voltages reach the proper values for system operation c Activates an interrupt signal to the microprocessor when supply voltages drop to levels too low for reliable operation SIGNAL LEVEL DETECTOR CR2 CAPACITIVE DIVIDER VOLTAGE C4 CR3 REFERENCE 50 MHz OSCILLATOR Qi C9 CIO Section IV Theory of Operation 4 46 Input ac line power is supplied to the primary of power transformer the main chassis through fuse FI line switch S1 and a line voltage selector switch 4 47 Power transformer steps down the ac line vol tage to two secondary windings These voltages are recti fied by bridge rectifiers and CR2 The dc voltage supplied by is filtered by and C2 and drives regula tors 2 and IC3 which develop 15 and 15 volts respec tively The regulated 15 volt supply also drives regulator IC5 to develop the 5 volt supply 4 48 dc voltage developed from CR2 is filtered by C3 and drives regulator C4 to produce 5 2 volts RS provides adjustment for the 5 2 volt supply 4 49 The unregulated 15 volt supply also drives regula tor ICI to produce 5 volts to power A1 IC6 and generate a voltage reference at the junction of R7 and 8 4 30 output voltage of the 5 2 volt regulated DC supply is monitored bv comparator Ala to develop a power up signa
80. 3 23 Calibrating the Instrument The instrument incor porates a power reference and automatic calibration facili ties for fine sensitivity corrections Sensitivity corrections are limited to a maximum of approximately 3 5 from the original factory set values as a precautionary measure This feature protects against gross miscalibration which might occur if calibration were attempted with a power level other than that supplied by the power reference applied to the sensor If computed calibration corrections from the factory set value exceed approximately 3 5 the instrument rejects the sensitivity correction and reverts to its previous sensitivity To use the calibration function proceed as follows a Program the instrument for power mode autorange and the appropriate measurement channel and sensor b Enter a calibration factor of 0 dB through the keyboard c Connect the sensor to the POWER REF connector d Press the CAL key The LED display should indicate 1 000 mW 20 1 0 4 for 4200 5 sensors NOTE If the instrument is supplied with a 75 ohm sensor 4200 4C an adapter P N 950006 is also supplied Use this adapter between POWER REF tor and the sensor to convert the Type N POWER REF connector to 75 Before calibra tion enter a 1 76 dB CAL FACTOR to compensate for the mismatch error that is introduced by the 75 ohm sensor 3 24 Error Messages Under certain condition
81. 4200 If Interface operation becomes abnormal It should first be mined If the 4200 operates normally without the Interface If It does proceed according to the following paragraphs 8 43 Physical Inspection Check the inter face board visually for loose or broken con nectors unseated IC s foreign material etc 8 44 Voltage Checks With the board Installed In the 4200 and all connectors in place check the supply and IC voltages according to the values shown on the schema tic diagrams Figures 8 2 B 5 and 8 4 8 45 Active Device Substitution All the active devices are socketed making replace ment simple Replace each device one at a time and check for restoration of proper performance by the Instrument APPENDIX B OPTION 4200 018 B 46 Troubleshooting An oscilloscope while not the most useful tool for troubleshooting bus oriented microprocessor systems still may be used to determine acti vity or lack of activity on the address data and control lines 8 47 REPLACEABLE PARTS 48 Table 6 2 11575 all the replaceable parts and Includes Reference Symbol Description Mfr Mfr s Part and the BEC Part No B 49 SCHEMATICS B 50 Refer to Figures B2 83 and B4 for the schematics for the 4200 018 Option B 11 12 APPENDIX OPTION 4200 018 CARD EDGE I l 01 081 02 5 T N 082 D3 T i 083 04 04 084 os a 05 085 05
82. 4210000 ICS MSM 128 20 RS RAM 2K X 8 52464 MSMS128 20 RS 1 534304000 IC9 IC 4011 QUAD 2 INPUT H HD 02735 230115 1 554022000 RES NETWORK 4 7K 2 1 8 01121 3168472 1 345020000 1014 741542 4 10 DECODER 01295 SH74LS42N 1 554210000 741532 0080 2 OR 01295 SN74LS32N 1 534163000 116 83255900 PERIPH INTERFACE 54335 AM8255APC 1 534171000 RES NETWORK 4 7K 2 1 80 01121 3168472 1 345020000 1513 IC 8273 2 KEYBD DISP INTERFACE 35297 uPDS279C 2 1 534211000 JB CONNECTOR 2 PIN STRAIGHT 27264 22 03 2021 1 477361000 CONNECTOR 2 PIN STRAIGHT 27264 22 03 2921 1 477361000 41 2 SOCKET 16 06776 ICN 163 S3 G 2 473042000 45 CONNECTOR 2 STRAIGHT 27254 22 03 2021 1 477361000 L1 INDUCTOR JSuH 102 24226 10 152 1 400373000 SHUNT 2 CIRCUIT 27264 15 38 1024 1 483253000 PA SHUNT 2 CIRCUIT 27264 15 33 1024 1 483253000 P1 SHUNT 8 CIRCUIT 32575 435704 8 1 482226000 P2 CONNECTOR 5 PIN RT ANG MOD 04901 4477333008 1 47733300A P3 62 CONNECTOR 5 PIN RT ANG MOD 04901 477332008 1 477332008 P4 CONNECTOR 6 PIN RT ANG MOD 04901 477331008 477531008 5 SHUNT 2 CIRCUIT 27264 19 38 1024 1 483253000 81 TRANS NPN 285904 04713 215904 1 528071000 R1 RES MF 332 OHM 1 1 44 19701 SO04SEDSS2ROF 1 341250000 R2 3 RES MF 10 0K 12 1 44 19701 594 10 00 2 341400000 R4 5 RES MF 5 11 1 1 44 19701 5043ED5K110F 2 341368000 R6 RES MF 100 OHM 1 1 44 19701 5045 0100 0 1 341200000 R7 RES MF 10
83. 42c 5 42d and 5 43a through 5 43c e Adjust the value obtained in paragraph c above in the desired direction bv increasing or decreasing this value A change of 12 counts in this value corresponds to a change of approximately 0 01 dB For example if the recorded indi cation in Table 5 28 were 25 34 dBm rather than 25 32 dBm as required a correction of 0 02 dB is necessary therefore 24 counts should be subtracted from the value ob tained in paragraph c above To enter this new value press the N N N N and REF LEVEL dB keys f After entering the adjusted value set the control board bit switch Figure 5 3 to the OPERATE MODE switch No 2 closed and recheck the performance by returning to paragraph 5 43c 5 44 f the difference in the last column of Table 5 23 exceeds 0 02 dB for the 3 4 5 dBm setting of the Model 25 this difference may be reduced as follows a Set the Model 25A output to 4 dBm b Set the control board bit switch Figure 5 3 to Section V Maintenance MODEL 25A CALIBRATOR PLIFI 50 OHM 4200 6 10 mw OR EQUIVALENT AMPLIFIER ATTENUATOR SENSOR Figure 5 7 Test Setup for Determination of Attenuation Value MODEL 25A POWER METER CALIBRATOR 10 dBm 1048 MODEL 50 OHM 4200 6 ATTENUATOR SENSOR Figure 5 8 Calibration Test Setup Model 4200 6 Sensor 30 dBm Range TABLE 5 28 TYPICAL CALIBRATION DATA FOR MODEL 4200 6 SENSOR WITH MODEL 4200 Model 25A Mode 4200 Indicat
84. 43 0100 0 5043 200 72 1 LE15J1 M ICN 063 S3TG ICN 083 S3 G ICN 406 S4 TG ICN 246 5S4 G ICN 163 S23 G ICN 143 S3 G E PART NUMBER 283336000 224314000 283334000 224310000 534171000 421034000 554207000 554229000 534209000 554205000 534218000 534206000 534209000 477331008 311408000 341341000 341300000 341200000 341400000 341368000 341400000 341388000 341400000 343646000 311293000 341600000 341536000 341538000 341408000 341587000 345708000 341325000 341429000 341533000 341600000 341600000 341500000 341500000 341392000 341400000 341368000 311328000 341557000 341386000 341487000 341587000 341384000 311401000 311328000 341357000 341592000 341465000 341500000 341529000 311328000 325007000 473054000 473041000 473052000 473043000 473042000 473019000 6 2 Replaceable Parts Continued 1 a Ne sw aw 042361000 OPCOOE 0 REV AA CG INPUT REST NETWORK ASSY MODEL 4200 REFERENCE FED MANUFACTURER DESIGNATOR DESCRIPTION CODE PART NUMBER R29 RES MF 110K 1 173 19701 50634 01109 0 R31 RES MF 110K 1 1 34 19701 5053 110 0 R33 RES MF 2 10K 1 1734 19701 5063J02K100F 04222502A OPCODE 0 REY CHOPPER MODULE MODEL 4209 REFERENCE FED MANUFACTURER DESIGNATOR DESCRIPTION CODE PART NUMBER A4 PWA CHOPPER DUROID 04901 042161 02A 04216102A 0 REV Ax PWA CHOPPER DUROID MODEL COMMON REFERENCE FED
85. 442900 34371 82 54 i HUMBER 477155000 810099000 810100000 911002000 745270000 843058000 09214101C 72098600A 755107000 571157000 81211900C BEC PART NUMBER 534427 00 5354428008 534429008 534410008 Section Schematic Diagrams SECTION SCHEMATIC DIAGRAMS Schematic Diagrams Page 7 1 Main Frame Al Schematic Diagram 7 3 7 2 Display Board A2 Schematic Diagram 7 5 7 3 Power Reference Board Schematic Diagram 7 7 7 4 Chopper Board A4 Schematic Diagram 7 9 7 5 Control Board AS Schematic Diagram Sheet I of 2 7 11 7 5 Control Board AS Schematic Diagram Sheet 20f 2 7 13 7 6 Input Module Board Schematic Diagram Sheet I 2 7 15 7 6 Input Module Board Schematic Diagram Sheet 2 72 7 17 7 7 Power Supply Board 7 Schematic Diagram 7 19 7 8 Options Schematic 7 21 7 1 7 2 Section Schematic Diagrams Al MAIN FRAME 1 FRONT i GRY PANEL e 0 Gg 0 aa e q e I I AT P 12 2 42 12 WIZ WIZ J
86. 4901 04223109C 1 042251006 CGY Pua INPUT 03901 04223001 1 042230018 J26 GY CONNECTOR ASSY FEMNLE 04901 032141010 1 09219101 J1 03 gt CONNECTOR ASSY FEMNLE 04901 032141010 1 09214101C J36 04 CONNECTOR ASSY FEMNLE 04901 09214101 1 09214101C wi CABLE UNIT 16 04901 920046006 1 92090046008 wan CABLE FLAT UNIT 04901 920052000 1 920052000 ut2 G CHELE ASSY PS TO DISPLAY 04901 571142000 1 571142006 Wis G CABLE ASSY PS TO CONTROL 04901 571144005 1 571194005 553 CABLE ASST PS COHTPOL 2 04901 571145005 1 571145000 G3 CARLE ASST TO INPUT 04901 5 000 1 571143006 421 CG CHELE ASSY TO INTERFACE 04901 1 571147006 6 1 Section 6 2 Replaceable Parts Continued Parts List 04223409E 0 00 0 REV Gx PUR CONTROL MODEL 4200 REFERENCE FED MANUFACTURER BEC DESIGHATOR DESCRIPTION CODE PART NUMBER QTY PART NUMBER BT CELL LITHIUM 3 54423 BR2325 1HB 1 555007000 CAP MICA 430pF 1 5007 14655 015 0431 03 1 200037000 C2 CAP MICA 100pF 54 5007 14655 05 0101 03 1 200001000 TANT 15uF 10 20 6289 1960156 9020 1 1 283227000 C4 7 EL 10uF 204 25V 54217 SM 25 VB 10 M 4 293336000 CR1 2 DIODE SIG 1N914 01295 1N914 2 530058000 7404 01295 SN7404N 1 534042000 102 RES NETWORK 4 7K 2 1 84 01121 3168472 1 345020000 IC3 IC Z80 CPU PS 6708 280 CPU PS 1 534159000 IC4 IC 741542 4 10 DECODER 01295 SN74LS42N 1 53
87. 5 17 Visual Inspection With the instrument covers re moved inspect all assemblies for foreign material unseated integrated circuits transistors or connectors for broken leads scorched components loose screws and other evi dence of electrical or mechanical malfunction 5 18 Use of Block Diagrams By studying the detailed theory of operation in Section IV together with the associated block diagrams it may be possible to isolate the cause of an instrument malfunction to a particular block 5 19 Systematic Troubleshooting If visual inspec tion and block diagram analysis do not localize the source of a malfunction proceed with module troubleshooting as follows a Power Supply With normal input power applied to the instrument check the power supply output voltages at each module power connector Correct power supply voltages are shown on the applicable schematic diagrams If an abnormal voltage is encountered disconnect the nodule connector from the module and note whether the power supply output voltage becomes normal if it does the problem probably is not in the power supply If on the other hand the abnormal voltage condition remains work backward through the power supply circuits comparing voltages with those shown in Figure 7 7 By analyzing abnormal indications it should be possible to localize the problem to one component in the power supply b Input Module With a 2 51 mW signal applied to the power sensor
88. 5427009 473152000 472019900 475041000 472012080 472052000 7 475819000 9475644060 475042000 475045000 473055000 473052100 473055000 547025000 PART NUMBER 534450008 534451008 PART NUMBER 0 9 Section Parts List 042520028 MODEL 4200 OPCODE 3 REV D REFEREHCE DESIGMATOR DESCRIPTION e ee A ee 54012 CAP AND CHAIN 402 CABLE CLIP 1 8 54032 CABLE CLAMP 1 4 54042 SCREW 4 40 X 1 4 BH SS SEMS 5 405 NUT HEX 579 27 X 3 32 X 374 408 WASHER LOCK 5 3 INT 4072 G CONNECTOR ASSY FEMALE 403 PLATE CONN UNIT amp 409 PLUG BUTTON 5 8 4102 CABLE INPUT 54112 SHIELD 99100624 OPCODE 0 REY MODEL 4200 REFERENCE DESIGNATOR DESCRIPTION ICAS IC EPROM PROG 427AA 4200 IC7AS IC EPROM PROG 428AA 4200 U8A23 IC EPROM PROG 42988 4200 14925 82054 TIMER 6 10 6 2 Replaceable Parts Continued REAR INPUT 4200 04 FED MANUFACTURER CODE PART NUMBER 02660 830 75 1 05915 HUC 2 95915 HUC 4 02560 41 15 78189 1225 02 94901 09214101C 04901 720885008 85530 54 04901 571157000 04901 81211900C 4200 018 06 FED MANUFACTURER CODE PART NUMBER 04901 534427008 04901 524428008 04901 55
89. 8 11 11 14 R25 R26 28 R30 R32 R34 R35 R36 R3 R38 R39 R40 R42 R44 R45 R47 R48 R49 52 RS3 R54 RSS X14 XAR4 T XIC2 X1C6 XIC9 10 64 CER 1000 102 600V 8255 565 D A CONVERTER 12 BIT 40538 DECDR DEMULTPXR 4047A MULTIVIB CRCA ONLY 40518 MULTIPLEXER RCA ONLY 40138 DUAL FLIP FLOP RES RES RES RES RES RES RES RES RES RES RES RES RES RES RES RES RES RES RES RES RES RES RES RES RES RES RES RES RES RES RES RES RES RES RES RES RES RES RES RES RES EL I10uF 20 25V 15000 104 600V EL 100uF 20 25 40168 QUAD SWITCH 40758 2 INPUT OR 40518 MULTIPLEXER RCA ONLY CONNECTOR 6 PIN RT ANG MOD VAR 100 OHM 10 0 54 MF 2 67K 1 1740 MF 1 00K 14 174 MF 100 OHM 14 1 40 10 0 14 1 40 S 11K 14 174W MF 10 0K 14 174 MF 8 25 14 1 40 MF 10 0K 14 t 4U COMP 3 0M 5 1 44 VAR SOK 10 0 54 MF 1 00M 1 174 237K 1X 174 MF 249K 14 1 40 MF 12 1 12 12 44 MF 806K 14 174W COMP 12M SX 1 44 MF 1 82 1 1 40 20 0K 14 1 44 221 14 1 44 1 00M 14 1 44 MF 1 00M 1 1 4 MF 100K 1X 174W MF TOOK 1 174W HF 9 09K 1 1 43 MF 10 0K 14 t 4W MF S 11K 14 1 44 VAR 10K 104 0 54 MF 3 92K 1 1 4W MF 7 87 1 1 74U MF 80 6K 1 174W MF 806K 14 174W MF S0K 1 174W VAR 200K 10 0 54 VAR TOK 10 0 5 MF 3
90. 87 TO cia gt 9 16 1 TO 220231 PING gt Sat 44 5 2 ui A o 99 3 2 N e 1009F ee 9 52v wa 22 I z5 L2 z ee Ce Toro wei DEGERE SY SSCS 3 LM Cu E xc I ee pecia xa one TE wae ee eee ee 3 oS 6 Ti T TO P4UIS PINS RESET RFSH EERE ee 55 RFSH RFSH TO P4 19 PINS 1 24 3 CONNECTS WIB J22 24 QN FRAME SCHEMATIC 82 271 SHT 1 OF T AND NOTES CONNECTS TO I CAPACITANCE VALUES IN af UNLESS A20 w20J24124 OTHERWISE SPECIFIED ON OPTIONS FRAME 2 RESISTANCE VALUES IN OMMS SCHEMATIC 3 USE JUMPER A WHEN 1 7 1 831099 32K ROM 25 SCHEMATIC CONTROL 80 4 LAST NUM ERS USED Ra C3 2 5 ON 3 2V UNIT OFF NOM 2 87 TEST POINT 83127 SHT 50 OF 7 SELECTED COMPONENT 8 NUMBERS NOT USED 16 CIO Cl 1012 E8312718B Sh 5a Figure 7 5 Control Board 5 Schematic Diagram Sheet 2 of 2 7 13 7 14 NOTES 1 CHANNEL ADD JUMPER B CHANNEL 2 ADD JUMPER 2 C Te s 5 LTB C18 9 SD 3 0 REMOVE B 4 AMPLIFIER 08312768 LEH gt Mg HO mO P1123 Section VII Schematic Diagrams TEST POINT 3 EUA Fr r mm
91. 9 DUAL 2 4 02735 1 urs 74Hcz40 OCTAL BUS 12725 1 31SANL IEEE BUS PROCESSOR 01295 THS99144HL 1 ui TSIEN IEEE BUS TRANSCEIVER 01295 SHPSIEC H 1 IC 75151 IEEE BUS TRANSCEIVER 01295 1 1 2 SOCKET IC 40 PIN 06775 ICN 405 S4 TG 2 4 5 T IC 14 08776 ICH 143 33 G 2 T IC 8 PIN ICH 53 6 1 RUS 7 IC t4 a ICH 143 8 6 T 40 PIN Q amp z7 amp ICH 4066 S4 TG 1 T IC 28 068776 ICN 226 2s TG 1 9 10 T IC 14 PIN 08776 1 143 lt 2 5 2 7 23 ICH 22 S4 TG 1 12 IC 16 PIN ICN 163 S2 G 1 SOCKET IC 24 PIN 05775 ICN 24 4 G 1 HUTS SOCKET 20 05775 1 202 52 1 MUTE SOCKET 1 40 PIN 05778 ICH 106 34 76 1 017 18 SUCKET 20 PIN 06776 ICN 203 S3 G 2 Y1 CRYSTAL 3 579545 EDMAR NACESSA 1 99100614 OPCODE 0 REY A 4200 018 MODEL 4200 REFERENCE FED MANUFACTURER DESIGNATOR DESCRIPTION CODE PART NUMBER QTY IC6AS IC EPROM PROG 45084 4200 04901 534450008 1 IC7AS IC EPROM PROG 451AA 4200 04901 554451008 1 042230028 OPCODE 0 REV Dx PWA INPUT 03 MODEL 4200 REFERENCE FED MANUFACTURER DESIGNATOR DESCRIPTION CODE PART NUMBER QTY Same as standard PWA Input P N 04423002B Section VI Parts List PART NUNS m 524425028 524409008 534452004 524425014 524403000 524425008 SE442503A 554285000 534286100 5
92. 92K 1 1744 MF 909K 1 1744 47 5K 1 1 44 100K 1 1744 MF 200K 1 174W VAR TOK 104 0 5 THERMISTOR 50 OHM 10 SOCKET IC 6 PIN SOCKET 8 PIN SOCKET IC 40 PIN SOCKET IC 24 PIN SOCKET IC 16 PIN SOCKET IC 14 PIN G PWA INPUT AND PWA INPUT 03 OPT 51640 04213 02735 02735 02235 02735 02735 02235 14901 73138 19701 19701 19701 19701 19701 19701 19701 19701 01121 23138 14674 19701 19701 19701 19701 01121 19701 19701 19701 14674 14674 19701 19701 19701 19701 19701 73138 19701 19701 19701 19201 19701 23138 23138 19701 19701 19701 13701 19701 23138 00241 16776 16776 06726 06776 06776 06776 MANUFACTURER PART NUMBER SM 25 VB 1 0 CE 151 SM 25 VE 100 M CE 102 8255 0565 0 401 305386 CD4047 RE 04051 04015356 60401656 04075 04051 47733100A 72PR100 5043 2 670 5043 01 000 5043 0100 043501 00 00 S043EDSK110F 5043 010 00 04350512 500 0455010006 CB3055 22 50 5043 01 000 5045502706 5043 0249 5043 012 10 5043 0806 1265 5043 1 20 04 350200 06 04 50 22 11006 5043 01 000 5043 01 000 5043 0100 0 5043 0100 SO43E09K 090 5043 01 0 5043 5 110 72PR10K 5043509206 04250 9706 5043 080 60 5045509060 04 35005006 72PR200K 72PR1 OK SO4SEOSK920F 5043 0909 0 5043 047 50 50
93. A T 1 REAR s PANEL S ul ej z A Hi sig ENS aj 21 6 6 W6 WI6J2 2 21 4 16 16 16 W 42121 E831271B Figure 7 1 Main Frame Al Schematic Diagram 7 3 7 4 NOTE 1 8 USED ON 4200 SERIES ONLY P2 26 too C831275A 2 DISPLAY BOARD 1 Y GNO v 2 26 31422 AN 69 ee 9 1a 8 898 3 RIO0 et 3 5 16 1 15 nu 101 3 away LAMP 91 14 TEST ssw 9 Si 3 R6 sv 15K i 15 4 7K 6 So Qt 2 5 Eu NOTES 1 CAPACITANCE VALUES IN UNLESS CTHERWISE SPECIFIEO 2 RESISTANCE VALUE IN OHMS UNLESS OTHERWISE SPECIFIED 3 ALL LED S TO TYPE HLMP 1301 UNLESS OTHERWISE SPECIFIEO 4 EXTERNAL MARKINGS 8 USEO ON 9200 SERIES ONLY LAST NUMBERS USEO RO CRIS 526 icH 5 8 ON 4200 SERIES ONLY 8312718 165 9 898 5 47 iwi IN2 IN S_ T is ss 3 Stuy 171 je Ja la n o o a 31422 CONNECTS TO 17 13 22 ON FRAME SCHEMATIC 834271 SHT 1 OFT al 7 ica 5082 7653 vss 00174 ou 3 167 058863 our ee FREESE QUT Yoo POT CONNECTS TO 1 1 2 17 ULT QN FRAME SCHEMATIC 831271 SHT I OF 7 com Section VII
94. ACTOR GHz function is selected the microprocessor must be advised as to which sensor is being used The SELECT SENS Key is used in conjunction with the numerical keys for this purpose The sensor number is shown on the barrel ot each sensor M5 Section Operation Example To specify sensor number two Press Display 2 0002 SELECT SENS Sensor serial numbers are stored in the non volatile memory To recall sensor serial numbers Press Display will respond with the serial SENS number stored in SIN memory 3 15 MODE Selection The MODE keysenable the opera tor to select the desired measurement mode When the MODE PWR key is pressed measured power levels are displayed in mW uW or nW the annunciators associated with the LED display indicate the appropriate unit When the MODE dB is pressed measurement values are displaved in terms of dB with respect to an operator entered dB reference level If 0 dB had been chosen as the reference level the displayed numerical values represent dBm and the dBm annunciator is lighted selection of any other dB reference level causes lighting of the dBr annun ciator and displayed measurement values represent dB with respect to the selected reference level Resolution of the instrument in the dB mode is 0 01 dB 3 16 RANGE Selection The RANGE keys enable the operator to select either automatic ranging or a range hold function The automatic ranging funct
95. B SET CLR LEL SY Numerical decimal point and and CHS keys LINE switch POWER REF connector SENSOR connector CAL key ZERO key Provides means for entering and recalling channel and sensor serial numbers Provides means to set the dB reference level Provides means for clearing incorrect digit s entry clearing dB calibration factor and dB reference level to zero and returns keyboard control from 488 bus control Provides means for entering signed numerical data Provides means for turning AC line power on and off Supplies mW level at 50 MHz to 50 ohm load when POWER REF ON switch is set to ON position Provides means for connecting sensor to channel input Provides means for calibrating instru ment when sensor is connected to 1 mW source Provides means for generating and storing zero corrections for all ranges with zero input to sensor Section Operation TABLE 3 1 OPERATING CONTROLS INDICATORS AND CONNECTORS Cont Control Indicator Figure and or Connector Index No Function Connector for IEEE 488 bus operation option 01 Jl connector Provides meuns for selecting instrument address when instru ment is equipped with IEEE 488 bus interface option option 01A SI switch and message terminator P3 connector Provides logic level signals for input disconnect during Zeroing Operations and high and low dB limit sig
96. B of channel minus Channel 2 This output is affected by both the calibration factors and the dB reference levels entered in each channel The equation is RECORDER OUT VOLTS 2 8 CAL FACT dB REF ch 1 B 10 _ dBch 2 dB CAL FACT dB REF ch 2 s 10 Or equivalent dBgi RECORDER OUT VOLTS eee Valid recorder outputs will be obtained for display indica tions of 80 dB 0 volts to 30 dB 11 volts 3 34 MINIMUM PERFORMANCE STANDARDS 3 35 Test Equipment Required For minimum per formance testing of the instrument an adjustable power source such as the Boonton Electronics Corporation Model 25A Power Meter Calibrator and a dc voltmeter or oscilloscope capable of measuring 0 to 10 volts are required 3 36 Preliminary Setup a Turn on the instrument and the adjustable power source and allow sufficient warmup time If either unit had been stored at ambient temperatures substantiallv different from the ambient temperature at the minimum performance test facility make sure enough time is allowed for each device to reach ambient temperature b Set the adjustable power source output to zero and connect the sensor between the adjustable power source and the front pane SENSOR connector of the instru ment using the sensor cable c Key in the following measurement parameter data through the keyboard I SELECT CHNL SELECT SENS N number of sensor being used MODE dB RANGE A
97. C Model 4200 3 The sequence of events the above program are as foll ows 85 Controller Comments RUN The model 4200 wii read the generator level of approxima tely 0 dBm and this will be printed by the model 85B the Model 1020 generator wil change its level to 10 dBm but the Model 4200 will change Its Indication since it 1 In the hold indication mode program stops at pause and walts for CONTINUE on Model HP85 CONTINUE This Issues trigger com mand to the Model 4200 which now changes to approximately 10 dBm this 15 printed by the Model HP85 CONT NUE This Initiates a sequence which the measurement complete SRQ Is enabled CONTINUE This Initiates a sequence which the measurement comp SRQ has been disabled 52 Model 4200 Device Dependent Statement Summary Refer to Table 8 5 A 33 Sealed System Operation When sealed system operation selected by the control board bit switch the Instrument wll power up the operata mode but by the use of the proper GPIB commands this Instrument be placed the AC modes to allow calibration of the instrument over the bus without removal from the system rack The GPIB commands are Operate Mode Calibrate Mode 1 DC Cal B im Calibrate Mode 2 AC Cal 82m 8 54 THEORY OF OPERATION B 35 General Interface board A23 s a microprocessor drlven data Interface which converts I
98. CTURER OESIGNATOR DESCRIPTION CODE PART NUMBER QTY Ci TANT 1 0uF 10 35V ONLY 56289 1960105 9035 41 c2 3 EL TOuF 20 25V 54217 SM 25 Y8 10 M CRI DIODE SIG 1N914 01295 1N914 Jt CONNECTOR 24 PIN lt 32575 552230 1 2 56 CONNECTOR S PIN RT ANG MOD 04901 477333008 RI RES NETWORK 4 7K 2 1 8 01121 3168472 51 SWITCH SLIDE DIP SPST 7 75378 206 7 LP U1 IC EPORM PROG 32280 4200 01 04901 53432200H 741532 QUAD 2 INPUT OR 01295 SH 4LS32H 741504 HEX INVERTER 01295 SN74LS04N U4 9914ANL IEEE BUS PROCESSOR 01295 TMS9914ANL 95 7415373 OCTAL LATCH 01295 SN 4LS373N us IC 75160 IEEE BUS TRANSCEIVER 01295 SN75160BN IC 75161 IEEE BUS TRANSCEIVER 01295 SN75161BN xS SOCKET IC 8 PIN 91506 508 7670 SOCKET 24 06776 ICN 246 S4 G XU4 SOCKET IC 40 PIN 06776 ICN 406 S4 TG 95 7 SOCKET 20 PIN 06726 ICN 203 S3 G 042235008 OPCODE 4 REV PUA INTERFACE 4200 018 MODEL 4200 REFERENCE FED MANUFACTURER CESTRIFTION COCE PART HUHEER ATY CONNECTOR 2 PIN STRAIGHT 27264 21 SHUNT 2 CIRCUIT 27264 924 e COHHECTOR 2 STRAIGHT 27254 2021 C1 MICA dTpf s 3 0V 20207 DNS SC4T OY cz CaP TANT l uF 105 55 56239 1552105654 cz CER Q luF 20 50 04222 SR215E104HAA cs EL 1045 20 25V 4217 25 10 c7 12 CER 0 1 202 509 04222 215 J2 COHHECTOR 24 PIN GPIB 32575 52229 1 P1 52
99. E 3 13 3 42 Calibration ae ge 3 13 SECTION OPERATION Cont 3 43 Sensor Selection Test diee UE ate ER Sees wa es CS 3 44 dB Reference Level Function 3 45 dB Limit Test RUE ER m e ac ed Ee e ede aos HET RUE 3 46 Calibration Factor Test Sous eee extre E uet etre AR ed SECTION IV THEORY OF OPERATION Paragraph 4 1 Iritrod ctlon scars cos He aues Te DR Sa Re ege 4 4 Overall Block Diagram se os urere eerie Ue 4 5 SENSOR east I POP EE FEM qua ee EMEN Ee u ees 4 6 000 Se b pie au pia TOI SOC ages an 4 7 Control MOdUlE 2 ERE E ce E S eur I M ERU 4 8 Display Mod le ies ue Ss Wrote Sane eet t ees edu edere oat gs 4 9 Power Reference x Ss sU EM PAM eS ee 4 10 Power Supply Module 2 22 EUR RR ON 4 11 Optional Modules 1 54 4 12 Detailed Theory of Operation Sensor Circuits 4 15 Detailed Theory of Operation Input P C Board 4 26 Detailed Theory of Operation Control P C Board
100. EEE 488 bus compatible signals Into control codes that operate the Internal control bus of the Instrument 1 also con verts Instrument dara Into IEEE 488 com patible signals for use the bus All data transfers are handied by source and acceptor protocols defined by 488 1978 B 36 Detailed Description Refer to Figure 8 1 Ali data manipulation and IEEE 488 bus management are controlled by CPU A23U7 In conjunction with a mIcro program stored PROM 2308 Ali data transfer Is handled in parallel to parallel mode by adapter 251 16 Latch A23U15 handles transfer of bit switch data that defines the Instrument address and message termination characters to the Instru ment data bus Bi directional buffers A23U17 and A23U18 handle data and control signal transfers respectively between adapter A23U16 and the Interface buses Ram memory 25011 is used by the CPU for tem porary storage of program variables during APPENDIX OPTION 4200 018 TABLE 8 5 MODEL 4200 DEVICE DEPENDENT STATEMENT SUMMARY Statement Description Statement Description Trigger a measurement Recall high dB limit Enable data averaging Enter as CAL FACTOR dB 5 00 to 3 00 Disable data averaging Recall CAL FACTOR dB Recall state of J to display 0 or 1 Enter N as frequency as CAL FACTOR GHz determination Disable 98 1 Imi t exceeded N 0 1 to 999 9 service request Recall frequency for CAL Enable 08 1 Im t exc
101. EST PROCEDURES 5 21 To make free running signature analysis tests proceed as follows CAUTION Make sure that power is off before attempting to perform steps a b and f of the following procedure Failure to observe this caution may result in the loss or destruction of data stored in the non volatile RAM NOTE Prior to any signature analysis checks note and record bit switch Figures 5 and 5 3 settings Restore these switch settings upon completion of the signature analysis tests a With power off remove the data bus connector on the control board from socket J adjacent to J2 and remove the data bus connector P on the control board from socket J adjacent to IC2 and disconnect jumper from connector J5 See Figure 7 5 Do not remove any of the control board PROMs b Detailed information for each of the free running tests is provided in Tables 5 2 through 5 7 For each check set the signature analyzer controls and make signature analyzer connections as specified in the ap plicable table NOTE For instruments containing PROMs with codes differing from those referred to in the various signature analysis tables contact the Boonton Service Department for correct signatures c After setting and connecting the signature analyzer apply power to the instrument touch the signature analyzer probe to the specified measurement points and compare the signature obtained on the signature analyzer with that specifi
102. FEDERAL SUPPLY CODE NUMBERS Fenwal Electronics Allen Bradley Sprague Electric Company Texas Instruments Amphenol RCA Solid State Division Pyroftim KDI Motorola Semiconductor Boonton Electronics Panduit Corp Robinson Nugent Inc Fairchild Semiconductor Fairchild Semiconductor Dialco Div of Amperex Comell Dubilier Panel Corp Schurer Mepco Electra 20307 24266 27014 27264 27735 27777 28480 31313 31918 32575 32397 32997 33297 33883 34335 51640 52464 Arco Micronics Gowanda Electronics National Semiconductor Molex Inc F Dvne Electronics Varo Semiconductor Hewlett Packard Corp Components Corp ITT Schadow Inc AMP Erie Boums Inc Trimpot Div NEC RMC Advanced Micro Devices Analog Devices Inc OKI NUMBER 54420 54426 54473 56289 56708 57582 61637 71450 73138 81073 91293 91506 98291 99942 54217 Dage MTI Buss Fuses Panasonic Sprague Electric Company Zilog Inc Kahgan Electronics Corp Kemet Union Carbide CTS Curp Beckman Instru Helipot Div Grayhill Johanson Augat Sealectro Corp Centralab United Chemicon Inc TABLE 6 2 REPLACEABLE PARTS 940043024 QPCODE 0 REV Ex COMMON CHASSIS 4200 MODEL 4200 REFEFEHCE FED MANUFACTURER DESIGNATOR DESCRIPTION CODE PART NUMBER RT PART NUMBER G Pua CONTROL 04201 OF 2274 00E 04223400E A202 G Pun DISPLAY 04901 042553006 1 042553000 ARCS G gt PUB POWER SUPPLY 0
103. Field entry of data is not required unless stored data is destroyed or its accuracy becomes suspect or if another sensor is to be used with the instrument 5 32 DC Calibration The front end of the instru ment input module is a balanced input DC amplifier with seven decade ranges for nominal inputs of 10 microvolts to 10 volts The output is an unbalanced DC with a 2 5 volt full scale value for each range this DC is converted into a proportional digital value One manual gain adjustment potentiometer R44 adjusts the gain of all ranges by the same amount this adjustment is factory set during instru ment calibration Individual range adjustments are accom plished through software correction or adjustment which is also determined during instrument calibration The soft ware corrections are stored in the instrument non volatile memory gain factor associated with the recorder DC output is also stored in the memory To calibrate the DC gain of the instrument proceed as follows a Connect the instrument and test equipment as shown in Figure 5 5 b Set the instrument controls as follows MODEL 4200 RF MICROWATTMETER CHANNEL 2 SENSOR CHANNEL 1 Figure 5 5 Test Setup for Input Module Offset Chopper and A D Converter Adjustments 1 Set the control board bit switch to MODE see Figure 5 3 2 Set the range calibrator to range 0 and depress ZERO 3 Press the and SELECT CHNL keys if channel 1
104. Function The SELECT keys are used by the operator to specify the number of the sensor to be used for measurements and the measurement channel IMPORTANT NOTE For normal operation the CHANNEL and sensor must be selected before any operation is performed however the CHANNEL must be selected before the sensor is selected The basic insirument contains only one measurement channel This measurement channel is designated channel 1 and the front panel SENSOR connector provides the input to this channel An option is available for addition of a second measurement channel When this option is included the additional channel is designated channel 2 and input power levels are applied to this channel for measureinent through rear panel connector To further enhance the usability of the instrument a channel 3 mode may be exer cised When channel 3 operation is specified channel and channel 2 levels are measured and compared by the micro processor and the difference in relative dB with the chan nel 2 level as the reference is displayed on the LED dis play Channel measurements channel 2 measurements or the channel 3 function can be selected using the numerical keys and the SELECT CHNL Example To select the channel input for measurement Press 1 0001 SELECT CHNL Display b Calibration data for up to eight sensors can be stored in the instrument n order to use the proper calibration data when the CAL F
105. GHz key Frequencies of 0 1 GHz through 110 GHz are valid f Using the numerical keys enter the sensor calibration factor for the frequency selected in step e For negative values press the CHS key after entering the sensor calibra tion factor value After entering the correct sensor calibra tion factor value press the CAL FACTOR dB key Values of 3 00 to 3 00 are valid g Repeat steps d through f until all twenty positions are filled h Press the 0 and RANGE AUTO keys i Set the contro board bit switch to the OPERATE MODE Refer to Figure 5 3 5 37 SENSOR CALIBRATION 5 38 General In order to use a sensor for which calibration data is unknown the following requirements must be met The control board bit switch must be set to accept another sensor number without returning an error indica Data is stored in the instrument non volatile memory for the number of sensors procured with the instrument if a sensor number other than any of those for which data is stored is selected an error message is displayed on the in strument LED display thereby indicating an empty storage 5 26 location The control board bit switch is set to accept this number as the number of the sensor for which new data is to be entered and the error indication is erased automatically The maximum number of sensors for which data may be stored is eight If data for eight sensors is already in storage and it is desired to use
106. GNO GNO GNO GNO 1 1 N C NIC 9 2 9 Figure 7 7 Power Supply Board 7 Schematic Diagram 7 19 7 20 8310990 20 MAIN FRAME 4200 01 4200 03 20 w20 4 E 3 3 8 5 3 o lt eee 8 2 2 x TO TO es 2 TO TO AS PI A6 P1 42 2 AS P1 A6 P1 CONTROL INPUT 56 CONTROL INPUT ede P C B eec X TXIT 2542 4 25 e A23 Jl e Eq INTERFACE P C B eee Z m ene gt 59 2e ene N ene lt lt a m eee o 9 3 2 PIO S ao POWER SUPPLY 2 o 5 g a lt P C B E Eo s g z lt z a 2 9 amp a m z lt E a TO TO 2 5 A23 P2 A22 P2 lt a c 4 lt o o INTERFACE INPUT P C B PC 8 SUPPLY GRN WHT REO WHT RED BiK TO TRANSFORMER TI NOTES 1 e 4200 58 OPTION E831099D W20J29 32 AG 32 A6P2 30 TO SUPPLY 4200 04 wes w23J30 34 W23P2 33 A44J2 33 4 CHOPPER COMPONENTS IN THE SENSOR HAVE NOTBEEN SHOWN IN GENERAL THEIR REPLACEMENT MUST BE FOLLOWED BY ADJUSTMENTS THAT REQUIRE SPECIALIZED NOTES 2
107. General Measurement parameters are entered into the microprocessor through the front panel keyboard In order to eliminate the need for repeated reprogramming parameters entered through the keyboard are stored in non volatile memory and the stored parameters are unaf fected bv instrument turn off and turn on It is important to remember that the last used parameters are stored in the instrument because these stored parameters could cause what may appear to be erroneous indications when subse quent measurements are made For example if the instru ment had been programmed for operation with sensor 2 and sensor I is used instead the LED display may be inaccurate if a GHz calibration factor is entered because the sensor 2 calibration factors will be used by the micropro cessor instead of the sensor I calibration factors If there is any question about stored measurement values the last entered values can be recalled for display as described in subparagraph b below Measurement parameters may be changed at any time NOTE When the instrument is in the store or recall mode the LED display and the annunciators blink on and off This feature is intended to alert the operator to the fact that the displayed value is not a measured value it is a value that has been recalled from the instrument memory or that is to be entered into memory 3 13 Use of Numerical Keys The numerical keys are used to enter numerical values for dBLIMITS CAL FACT
108. H BATN Pg ATN SAG SRG SCHEMATIC MATE INTERFACE vec SHIELD 551459 B 24 COM Figure 8 4 25 Interface PC Board Schematic Sheet 5 of 3 B 17 18 APPENDIX OPTION 4200 03 APPENDIX C INPUT CHANNEL 2 OPTION 4200 05 1 DESCRIPTION C 2 Option 4200 03 provides an additional measurement channel channel 2 that 15 completely similar to channel 1 except for mounting and Input connector location Input channel 2 connector for this channel 1 mounted on the rear panel of the Instrument With this option Installed measurements may be made on each channel Individually or both channels can be monitored automatically and the difference In dB displayed This option consists of an Input module complete with chopper that connects to the 40 Ine bus and has Its own power connector Connections are shown In Figure 7 8 5 INSTALLATION AND REMOVAL C 4 To Install and remove the Input Channel 2 Option proceed as follows Turn the Instrument bottom Remove the screws that secure the bottom cover and sllde the bottom cover back and off b Install the rear Input connector at the left side of the rear panel Dress the cable from the rear Input con nector down the left side frame of the Instrument as vlewed from the bottom of the Instrument and across the front sub panel The cable wit run below the module being Installed d Secure the cable grounding l
109. IOUS SENSORS Sensor Type 4200 5E 4200 6E 5 50 dBm 5 10 dBm 0 dBm lt 10 dBm 5 20 dBm lt 10 dBm lt 0 dBm lt 0 dBm lt 10 dBm lt 20 dBm lt 30 dBm 4200 7E 4200 8E lt 20 dBm 5 10 dBm the program will loop on Insertion loss gain measurements Each measurement Is triggered by the user Zeroing Is prompted in the local mode at the beginning of the program Reading errors should they occur will be signalled by a double beep from the calcula tor normal measurements will give a single beep There will be one print line per measurement The reference value Is not printed in this example Program Variable Usage P power measurement value R range value S status value Z dummy Input for prompts Program Statements Comments 0 cll 7 clear interface 1 ent zero chl prompt for zerolng 2 2 2 rem 7 enable remote 3 wrt 716 0 dBref auto set INAOR2NAORN ch 5 4 ent ref prompt to set up measure 2 ref 5 red 716 P S R read ref value status 6 If 5 gt 0 45 test status error S beep gto 4 7 wrt 716 114 set ch 1 dBref P P R3N 8 beep ent prompt for measurement measure 2 9 red 716 P S R read measurement status 10 if 5 gt 0 dsp test status 5 beep walt 100 gto 8 11 prt P dB gto 8 print measurement 12 end 28 program paragraph 25 also measures reflection coefficient If cha
110. IT IT A2 17 A2 A2P2 26 A3WI9 JI 26 A3 l gt n H DISPLAY 5V CALIBRATOR 1 P C 8 BLK WHT GRY WHT N NOT USED IN 9200 ae She 4 0 o 1990 24 5 lt VOLTS t10 1100 1201220 240150 400Hz FUSE 2 24 WIO JIO 10 A7PI 10 TO 6 2 5 8 281 W20J28 28 W20 20 30 30 INPUT lt gt o OPTIONS MAIN m 100 220 FRAME SCHEMATIC 4 1207240 AT 0 29 _W2I 2291291 2 w21 J31 31 TO A23 s i lt INTERFACE PCB ste BLK WHT H 4 T a quer sd imi ey I 2 3 i 6 lt 2 w I lt i 2 5 r lt u 1 i GAN WHT Bix mED 3 25 AT Toro 220 240 t POWER s I Tees l 4 7 il SUPPLY 1 EEF i il S 5595 BLK YEL Sil 1 NE 1 pie ORN 29 13 1313013 WISUIBUIB AS P2 18 Swed a MI wy 45 gt lt 1 AS ASP3 TO 858525521 d CONTROL REAR 2dozorc li A7 4 14 WIaJIA I4 14 14 19 19 AS 4 19 PANEL 55221 0 vr z 1 u so IT ai wl NI 41 24 DETECTOR al M CABLE NOTES zi 2 Amphenol 80 2 1 DENOTES EXTERNAL MARKINGS 7 6 15 WI5JIS 15 WIS WI5J20 20 Male Flug F
111. IX A IEEE 488 BUS INTERFACE OPTION 4200 01 APPENDIX B IEEE 488 BUS INTERFACE OPTION 4200 015 APPENDIX C INPUT CHANNEL 2 OPTION 4200 03 APPENDIX D REAR INPUT OPTION 4200 04 APPENDIX E INTERNAL TMA MATE OPTION 4200 06 APPENDIX F REAR INPUT OPTION 4200 S 17 LIST OF ILLUSTRATIONS Figure Page 1 1 Model 4200 RF Microwattmeter vi 1 2 Outline Dimensions 22252 ee ee Bee ee W E sv NE 1 11 2 1 Packaging Diagram 2 1 3 1 Front View of Instrument e 3 2 3 2 Rear View of Instrument u u s as 3 2 3 3 Typical Temperature Characteristics of Series 4200 Sensors 3 10 3 4 Typical Combined Temperature Characteristics of Instrument and 3 10 3 5 dB SWR Conversion Chart 0 0 3 11 4 1 Overall Block Diagram 4 2 4 2 Typical Series 4200 Sensor Schematic Diagram 4 3 4 3 Input P C Board Detailed Block Diagram I 4 5 4 4 Control P C Board Detailed Block Diagram 4 7 4 5 Display P C Board Detailed Block Diagram 4 11 4 6 Power Reference P C Board Detailed Block Diagram
112. Instrument not to pull the SRQ line true after each measurement the syntax Is OV A 25 Measurement Trigger Syntax The Trigger T command is an addressed command wrt T16 T used to trigger a measurement and 15 generally used in conjunction with Hold Indication function Q Refer to paragraph B 23 The Instrument is also responsive to the unaddressed Group Execute Trigger GET command This command 15 asynchronous and may result In a slightly faster response time than the T command which 15 executed only once each measurement cycle A 26 Limit Service Request This command when enabled will result In a service request by the Instrument when either dB limit high or low of elther channel channel 1 or channel 2 Is exceeded limit exceeded and the channel can be deter mined from the service request byte as shown below NOTE Bit 6 when set 15 the service request Bit Limit Exceeded 76543210 X1 XXXXO0 1 Channel 1 low Limit X1XXXX10 Channel I high limit X 1 0 1 XX Channel 2 low limit X1XX10XX Channel 2 high limit A 27 Typical Application Suppose that It is desired to measure insertion loss or gain with an Instrument equipped with option 4200 03 channel 2 measures Incident power and channel 1 measures output power program shown below will request reference conditions and walt for the user to set them up Following establishment of the reference A 6 TABLE 4 RANGE CODES FOR VAR
113. MANUFACTURER DESIGNATOR DESCRIPTION CODE PART NUMBER 1 2 PP 9 1 104 100 27735 11 1 19 100 IC1 IC SELECTED QUAD SWITCH 04901 534223000 TERMINAL 040 OD 270 LG 062M 98291 229 1071 230 6271 2 CONNECTOR PIN 71279 460 1521 02 03 00 R3 RES MF 51 1 12 174W 19701 5043 51 10 R4 5 RES VAR 25K 10 0 54 73138 720251 R6 RES MF 51 1K 14 1 49 19701 5043EDS1K10F SOCKET 14 PIN 91506 7144010 042360000 OPCODE 0 REV A CG CALIBRATOR ASSY 4200 MODEL 4200 REFERENCE FED MANUFACTURER DESIGNATOR DESCRIPTION CODE PART NUMBER ABC 4 PWA CALIBRATOR 04901 ce FT 1000pF 20 500 TUSONX 2499 003 550102 41 CONNECTOR HOUSING 27264 22 01 2021 CONNECTOR TYPE H 24931 25JR109 3 J2 Section VI Parts List BEC PART NUMBER 338504000 338504000 338331000 PART NUMBER 04216102A BEC PART NUMBER 234148000 534223000 310038000 477400000 341468000 311400000 341468000 423056000 PART NUMBER 042227008 227105000 479415000 479219000 6 5 Section Parts List 042227008 OPCODE 0 REY MODEL 4299 REFERENCE DESIGNATOR DESCRIPTION 6 2 Replaceable Parts Continued CG PWA CALIBRATOR BEC PART NUMBER ARI C1 C2 C3 cs c C3 C10 cr Cle CR1 2 CRS L1 L2 L3 9 RI R2 3 R4 Rs RT R9 3 R10 R11 R12 614 FED MANUFACTURER CODE PART NUMBER IC 301A 27014 LMSO1AN CER 470
114. NSOR Record Display SOMHz source Reading True Reading Downscale Correction 37dBmi 2004W Range 2 26dBm 2 51 uW Range 3 16dBm 25 1wW Range 3dBm 501 mW Range 5 10dBm 10 0mW Range 6 FOR 7E AND SE SERIES SENSORS Record Display 50MHz source Reading True Reading Downscale Correction 264 2 5 15 W Range 0 6dBm 25 1p W Range 64 251 mW Range2 4dBm 2 51mW Range 3 TABLE 5 27 DOWNSCALE CORRECTION DATA X Denotes downscale correction 5 24 Connect the instrument and test equipment as shown in Figure 5 6 b Set the instrument controls as follows Press the MODE PWR key on the keyboard Press the RANGE AUTO key on the kevboard 3 Press the 0 and CAL FACTOR dB Keys on the kevboard 4 Press the O and REF LEVEL dB keys on the keyboard ES Set the power meter calibrator output to mW d Check the indication on the LED displav of the instru ment If the indication is not 1 000 mW press the CAL Key e With 1 000 mW indicated on the LED displav check the indication on the digital multimeter it should be 9 98 to 10 00 volts the indication is correct proceed directly to step il the indication is incorrect proceed to step f f the digital multimeter indication in preceding step e was incorrect set the control board bit switch to CALI BRATE MODE see Figure 5 3 and press the dB LIM I
115. OR SELECT and REF LEVEL dB functions Whenever any numerical key is pressed the microprocessor interrupts the Measurement operation to accept new data Numerical values are keyed in normal sequence and keved in values enter the LED display from right to left Up to four digits plus decimal point and minus sign can be entered entries exceeding four digits are ignored Pressing the decimal point key places a decimal point after the right most digit in the LEDdisplay Pressing the CHS key changes the sign of Section Operation the entry in the LED display that is plus becomes minus Or minus becomes plus The plus sign is not displayed If anerror is made during entry of numerical values press the CLR key and repeat the data entry process When the LED display shows the desired numerical value pressing the applicable dB LIMITS CAL FACTOR SELECT or REF LEVEL dB key will cause the microprocessor to store the keved in parameter and return automatically to the measurement cycle Recall of the last entered values is accomplished by depressing the dB LIMITS HI dB LIM ITS LO CAL FACTOR dB CAL FACTOR GHz SELECT CHNL SELECT SENS or REF LEVEL dB keys as applicable The value stored for the selected parameter is displaved the LED display Whena recall is performed the instrument remains in the recall state until either a MODE key or a RANGE key is depressed the instrument then returns to the operating state 3 14 SELECT
116. PIB It must be assigned unique address This address is set using the five right most sections of rear panel address switch 51 accordance with Table 1 10 Message Terminator Positions 6 and 7 of the rear panel switch 51 permit a choice of message terminators as shown In Table 2 11 Command Response 10 addition to Talk and Listen Address commands the Instrument responds to the following Address Commands Response 1 Listen Addressed Mnemonic Name Function GTL Go To Local Enables panel control GET Group Execute Trigger a Trigger measurement b Listen Address Group Mnemonic Name Function UNL Unlisten De address as listener Talk Address Group Mnemonic Name Function UNT Untalk De address as talker APPENDIX OPTION 4200 01A TABLE 1 ADDRESS ASSIGNMENT Decima Talk Listen Switch Setting Address Code _ Code 5 4 3 2 1 o O O O o o o o o o o o o o o a m v O z x x lt gt N O O O O lt X Address 31 11111 will not be recognized and should not be used TABLE 2 MESSAGE TERMINATOR SELECTION Message Terminator with or without EOI 11 Continued d Unencoded Commands Mnemonic Name Function IFC Interface Initialize Clear Interface REN Remote Permits remote Enable operation 12 Operating States The Instrument operates In two sepa
117. PLACEABLE PARTS 46 Table 6 2 11515 all the replaceable parts and Includes Reference Symbol Description Mfr Mfr s Part No and the BEC Part No 47 SCHEMATICS 48 Refer to Figure A2 for the 4200 01A schematic Appendix IEEE 438 Bus Interface Option 4200 01A eI 22 RENS 52V A23 INTERFACE P C BO 20 P 29 0o 2 og i 3 Di 2 E 07 c MERC a ME RI ER 1 03 i 15 05 06 me L 3 04 Bs 831253 Se SERI 7 956 5 2V 40 2 Ag 2 Voc c 4 422 25 a 24 8 d 914 i aed TSN 2 Ag 00 D7 LS8 76 15114 131 12 TI TOL S 26 I 7 a A ne a 2 92 05 ct 41 a3 0 04 DIO 08 lt alaa D3 0102 3 p SP 0103 06 86 7 3 pios 25 96 6 a gt ua 0104 0104 994 pigs 04 pai lt 0105 0005 93 83 L 14 68 ca 2 25v 8 20 10 GNDO 25 xit d Tay D831253D E 11 2 31 wv wv NOTES P 29 P2 31 SCHEMATIC INTERFACE P C 8D I CAPACITANCE VALUES IN UNLESS OTHERWISE SPECIFIED CONNECTS TO COMMUNIS 0831252 8 29 2 EXTERNAL MARKINGS ON OPTION MAIN ON MAIN SCHEMATIC 3 LAST NUMBERS USED
118. POWER CRA c9 TRANSFORMER R VOLTAGE REGULATOR RIT PSS 3 MAIN FRAME P5 TP3 Te 6 2 P936 L 5 2v BRIOGE VOLTAGE ps RECTIFIER REGULATOR 6 CR2 IC4 1 6 sa 3 NMI 7335 RESET MICRO PROCESSOR POWER SUPPLY P C BOARD ce ee ee ae sa ws a ee ee lt en ee Pe wara C831453A Figure4 7 Power Supply P C Board Detailed Block Diagram 4 15 4 16 Section V Maintenance SECTION V MAINTENANCE 5 1 INTRODUCTION 5 2 This section contains maintenance instructions for the instrument Included are a list of required test equipment trouble localization procedures instrument adjustment and sensor calibration procedures Minimum performance checks included in Section these checks should be performed whenever there is any doubt about instrument performance 5 3 SAFETY REQUIREMENTS 5 4 Although this instrument has been designed in accordance with international safety standards general safety precautions must be observed during all phases of operation service and repair of the instrument Failure to comply with the precautions listed in the Safety Summary at the front of this manual or with specific warnings given throughout this manual could result in serious injury or death Service and adjustments should be performed only by qualifted service personnel 5 5 TEST EQUIPMENT REQUIRED 5 6 Table 5 1 lists test equipment required for main tenance
119. Print mode 4200 Indication Set Mode 4200 for Indication hold auto range mode dB mode Display prompt on Model 85 Stop program Issue beep Set Mode 1020 to 10 dBm output APPENDIX A OPTION 4200 01A 220 WAIT 1000 Wait 1 second for settled indication on 4200 230 ON INTR 7 If interrupt occurs GO TO 290 branch to 290 240 OUTPUT 703 Set Mode 4200 to issue yn a SRQ at completion of measurement 250 WAIT 200 Walt 0 2 second 260 ENABLE NTR Enable SRO Interrupt In 7 8 Mode 85 270 ON TIMER L If no Interrupt 15 5000 GO TO received 5 seconds 370 branch to 570 280 GO TO 280 Walt for interrupt or escape after 5 seconds step 270 290 OUTPUT 703 At Interrupt set noy Model 4200 to no measurement complete SRO 295 WAIT 200 Walt 0 2 seconds 300 S SPOLL 703 Store result of serial poil of Model 4200 In S 310 IF BIT S 6 lt gt 1 If bit 6 SRO bit of THEN GO TO Model 4200 service 370 request byte does not equal 1 go to 370 320 PRINT If bit 6 does equal 1 5 SRO 01 print SRO MEAS COMP SRQ 540 DISP PRESS Display prompt on CONTINUE FOR Ov Model 85 COMMAND 350 PAUSE 8 BEEP Stop program Issue beep 360 GO TO 260 Go to 260 370 PRINT NO MEAS There has been no COMP SRQ service request 380 PRINT DONE Check 15 complete print DONE In the above example the device addresses are Device Address HP Mode 858 7 BEC Model 1020 2 Model 4200 3 The sequence of e
120. Service request command the service request will be Issued by the instrument upon compie tion of a measurement 13 Raw data command the Instrument will not average or smooth any of the measurements Limit command the instrument will issue service request If any limit is exceeded If limit is exceeded and a service request is issued the U command must be rearmed to be come operational again Trigger command this command identical with the 488 group execute trigger Initiates a measurement cycle INTERFACE CLEAR and DEVICE disarm all the above commands 12 Continued Special Functions Special functions include the automatic zeroing and clear Service Request Status Codes Service tions request status Is defined by a five bit code as defined in Table 4 Keyname GPIB Function ZERO 2 Initiate an automatic TABLE 4 SERVICE REQUEST STATUS zeroing cycle L3 2 O Clear numeric entry to zero CH 1 low limit exceeding CAL K Performs 1 mW Auto Ch 1 high Iimit exceeding Calibration low limit exceeding 488 Bus Command Extensions The following functions are added to bus opera high exceeding tion d Data Entry Recall Functions These func Name GPIB Function tions enable entry or retrieval of numeric constants used by the Instrument Operation ADR ZERO Y Zero selected reverts to the measuring state after data ranges 0 7 storage SET RANGE G Set
121. TIC C240138E 00 R 55 831271 SHT 1 OFT TO JI PIN4 TO ICIO PIN 5 TO Jt PINS 4 6 7 8 10 0831271 Sh 6b 2 4200 25mw 9200 700 7 TEST POINT NOTES 1 CAPACITANCE VALUES IN UNLESS OTHERWISE SPECIFIED 2 RESISTANCE VALUES IN OHMS UNLESS OTHERWISE SPECIFIEO THESE VALUES USEO ON 9200 A B ONLY 6 NUMBERS NOT USED C2 841 R46 CIO R24 TP C24 R43 4 2 4 LAST NUMBERS USEO R55 C37 A9 4 5 6 FACTORY SELECTED SCHEMATIC Section VII Schematic Diagrams C26 100000 R44 200K R48 909K TISV 15 R42 7 5K P2 30 ON A20 OPTION FRAME SCHEMATIC 831099 CONNECTS TO W20 J30 30 ON Al FRAME SCHEMATIC 831271 SHT OFT P2 2 OPTION P2 30 3 5 2 5 2 27 63 10 10 25v 25v gt 5 28 c32 gt 5 10 S10 Tv psv z 5 INPUT MODULE 08312712 SHT 6b OF 7 Figure 7 6 Input Module Board A6 Schematic Diagram Sheet 2 of 2 7 17 7 18 C831273B CR2 PI IO 831273 T92 x1 gs wag RI3 R9 RI5 TP6 P4 14 het L8 0 J 29 CT P9 13 P8 28 P7U6 5 12 15 E831271A POWER SUPPLY P C PIU o RE0 wuT 3 CRI KP3 02 REO BLK REO GRN WHT GRN Pitot CONNECTS TO A 21010 ON FRAME SCHEMATIC 83127
122. TS LO key on the keyboard The LED display will show a modifier of approximately 3600 Calculate a revised modifier value to obtain the required correction For example if the digital multimeter indication were 9 96 volts 0 496 low und the dB LIMITS LO key recalled a gain modifier of 3500 the revised gain modifier value would be 1 004 x 3500 3514 Enter this revised gain modifier value bv pressing the following keys on the keyboard 2 5 l 4 dB LIMITS LO dB LIMITS LO revised value should appear on the LED display Reset the control board bit switch to OPERATE MODE 0 See Figure 5 3 Note the indication on the digi tal multimeter it shuld be 9 98 to 10 00 volts Repeat steps f and g if necessary until the correct indication is obtained h Set the power meter calibrator output to 0 125 mW and observe the indications on the instrument LED display and on the digital multimeter The millivolt indication on the digital multimeter should equal ten times the value shown on the LED display 1 count If the digital multi meter indication is incorrect adjust potentiometer R55 on the input module board as required to provide the proper digital multimeter indication i Repeat steps e through until no further adjustments are necessary Instruction manual supplement Section V Maintenance NOTE Make sure that control board bit switch is set back to OPERATE MODE upon complet
123. UTO dB LIMITS any 0 CAL FACTOR dB 0 REF LEVEL dB NOTE Maintain the same measurement parameters 3 12 for each of the following tests unless specifi cally directed otherwise 3 37 Automatic Zero Function Test To check the automatic zeroing function of the instrument proceed as follows a Ascertain that the signal input to the sensor is zero NOTE Do not confuse 0 dB with zero input For zero input to the sensor turn off the adjustable power source b Press the ZERO key and ascertain that the logic signal level at pin 3 of rear panel connector P3 switches from a logic low to a logic high when the ZERO kev is pressed remains high throughout the zeroing period approximately 26 seconds and returns to a logic low at the end of the zeroing period During zeroing the front panel LED display should show the following Display Comment Zeroing cc03 Zeroing complete 3 38 Autoranging Mode Test To check the auto ranging function of the instrument set the output level of the adjustable power source to each of the values listed below and ascertain that the instrument LED display readout agrees with the input power level within 0 2 dB 10 dBm 0 dBm 10 dBm 20 dBm 30 dBm 40 dBm 50 dBm NOTE For lowest ranges rezero if necessary 3 39 Range Hold Function Test To check the range hold function of the instrument proceed as follows a Set the output level of the adjustable power source
124. a Set the control board bit switch for calibrate mode 1 See Figure 5 3 b Press and SELECT CHNL keys on the kevboard if the channel input module is to be adjusted press the 2 and SELECT CHNL keys if the channel 2 input module is to be adjusted c Press the 0 and RANGE HOLD keys on the keyboard 4 Set the range calibrator and controls to range 0 and 500k source resistance and press the ZERO button 5 Connect a digital multimeter between test point TP9 on the input module and common 6 Connect a clip lead from test point TPS to chassis or common 7 Connect a clip lead from test point TP7 to chassis or common 8 Observe the digital multimeter indication it should be less than 15 millivolts If the digital multimeter indication is incorrect adjust potentiometer R45 as required to provide a digital multimeter indication of less than 25 millivolts 9 Remove the clip lead from test point TP8 The digital multimeter indication should be less than 15 millivolts If the digital multimeter indication is incorrect adjust potentiometer R36 as required to provide a digital multimeter indication of less than 5 millivolts 10 Remove the clip lead from test point TP7 11 Using the digital multimeter measure the voltage at test point TPS The voltage should be less than 100 millivolts If the voltage is incorrect adjust potentiometer R24 as required to provide a voltage indication of less than 100 millivolts
125. a 1 4 19701 R19 RES MF 51 1 14 174W 19701 042232008 0 REV BD CG HEAT MODEL 4200 REFERENCE FED DESIGNATOR DESCRIPTION CODE IC2 78MGUIC VOLT REG POS 07263 IC 9MGUIC VOLT NEG 07263 IC4 8GUIC VOLT REG 07263 ICS 9MGUIC VOLT REG NEG 07263 465289078 OPCODE 0 REY MODEL 4200 REFERENCE FED DESIGNATOR DESCRIPTION CODE S1 SUITCH ROCKER DPDT 13812 042396018 OPCODE 0 REV C REAR MODEL 4200 516 REFERENCE FED DESIGNATOR DESCRIPTION CODE P CONNECTOR LINE CORD 82339 52 SWITCH DUAL SLIDE DPDT DPDT 82339 47206LFR Section VT Parts List BEC PART NUMBER 341400000 341367000 341333000 341410000 311305000 341367000 341300000 341263000 311408000 341264000 341500000 302087000 341368000 341333000 341343000 341368000 341468000 PART NUMBER 535042000 535043000 535055000 535043000 PART NUMBER 4635286000 BEC PART NUMBER 477281000 465279000 6 7 Section VI 6 2 Replaceable Parts Continued Parts List 042355014 OPCODE 0 REY REAR PANEL ASSY MODEL 4200 516 REFERENCE FED MANUFACTURER DESIGNATOR DESCRIPTION CODE PART NUMBER QTY Fi FUSE 0 3 250 MOL 54426 MOL 0 3 J10 CONNECTOR 5 CIRCUIT 06383 56 24 5 415 CONNECTOR PIN FEMALE 27264 0206 1231 J20 CONN CORX BNC 54420 UG 625 U TRANSFORMER POWER 04901 44609100A 042317018 OPCODE 4 REV EC 6 PWAINTERFACE 4200 01A MODEL 4200 REFERENCE FED MANUFA
126. al dB calibration factor or the measurement frequency A calibration chart is attached to the barrel of each sensor and the calibration factor in dB for the measure ment frequency being used can be computed from this chart This dB calibration factor can then be entered into the instrument using the numerical keys and the CAL FACTOR dB key and the microprocessor will correct all subsequent measurements both dB and power auto matically in accordance with the dB calibration factor entered Example To enter a dB calibration factor of 0 3 dB Press Display 0000 3 000 3 CHS 000 3 CAL FACTOR dB b Reading and interpolation of the calibration chart can be tedious and subject to error or inaccuracy The CAL FACTOR GHz function provides a simple alternative method for calibration data selection Calibration data for up to eight sensors can be stored in the memory such calibration data may be entered into storage at the factory or in the field When the sensor number and the measure ment frequency are entered through the keyboard the microprocessor computes the required correction from the stored data and corrects subsequent dB and power mea surements accordingly The sensor number is entered using the SELECT function described in subparagraph g the measurement frequency is entered using the numerical keys and the CAL FACTOR GHz key To recall the last entered frequency for display press the CAL FACTOR GHz key to det
127. al is not utilized the same results can be achieved by depressing the ZERO key immediately before removing the incoming signal from the power sensor If the incoming signal is removed prior to depressing the ZERO key the instrument will immediately begin down ranging which would result ina shorter wait ing period than is desirable In such an event a second zeroing operation should be used CAUTION If the rear pane Pin 3 P3 power removal sig nal is not utilized signal power must be removed immediately following depression of the ZERO key If signal power remains connected to the sensor during the zeroing operation an errone ous set of zeroes will be generated During the warm up period and whenever ambient condi tions are changing the instrument should be zeroed fre quently if the lowest ranges i e highest sensitivity ranges are being used The display during the zeroing period will indicate On completion of zeroing and if no signal is being applied to 3 8 the sensor the display will indicate 03 If a signal is being applied and if the rear panel Pin 3 P3 power disconnect signal is being utilized the display will indicate the power being supplied to the sensor The approximate zeroing times including the waiting periods are listed in Table 3 2 TABLE 3 2 INSTRUMENT ZEROING TIME Zeroing Time Seconds Sensor Series 4200 4 4200 5 4200 6 4200 7 4200 8 dBm dBm dBm dBm dBm
128. an be powered from a 100 120 220 or 240 volt 50 to 400 Hz AC power source 4 11 Optional Modules Standard options are available to further increase the versatility of the instrument Two of these optional modules are shown in Figure 4 1 Section IV Theory of Operation RF MICROWATTMETER oc ANALOG SIGNAL INPUT MODULE CHNL I SERIES 4200 SENSOR SERIES 4200 SENSOR MODULE po mE 100 120 220 OR 240 50 400 Hz AC LINE POWER 1mw MUT REFERENCE MODULE KEY COMMANOS NO DISPLAY DATA CONTROL MODULE DISPLAY MODULE f INTERFACE lt IEEE 488 MODULE 8US INTERRUPT 15V POWER SUPPLY MODULE NOTE DASHED LINES INDICATE OPTIONAL MOOULES Figure 4 1 Overall Block Diagram a A second input module can be added to the instrument to permit measurement of output power levels of two devices without the need for repeated switching of sensor connections The input connector for this optional module is located on the rear panel of the instrument The second input module also permits LED display of the difference between the power levels of the two devices expressed in dB b The interface module provides an IEEE 488 bus interface for remote control of instrument operation and for remote display of measured values 412 DETAILED THEORY OF OPERATION SENSOR CIRCUITS See Figure 4 2 4 13 The sensor contains two paralleled precision resis tors 50 ohm effective total re
129. ange mode dB mode Display prompt on Model 85 Stop program Issue beep Set Model 1020 to 10 d8m output Walt 1 second for settled indication on 4200 APPENDIX 8 OPTION 4200 018 8 31 Continued Statement 230 ON INTR 7 GO TO 290 240 DUTPUT 703 250 WAIT 200 260 ENABLE INTR 7 8 270 ON TIMER L 5000 GO TO 370 280 GO TO 280 290 OUTPUT 703 295 WAIT 200 300 S SPDLL 703 310 IF BIT S 6 lt gt 1 THEN GO TO 370 320 PRINT MEAS COMP SRO 340 DISP PRESS CONTINUE FOR OV COMMAND 350 PAUSE BEEP 360 GO TO 260 370 PRINT NO MEAS COMP SRO 580 PRINT DONE In the above exampl addresses are Comment If Interrupt occurs branch to 290 Set Model 4200 to Issue a SRO at com pletion of measure ment Wait 0 2 second Enable SRQ Interrupt In Model 85 If no Interrupt Is received 5 se conds branch to 370 Walt for interrupt or escape after 5 seconds step 270 At interrupt set Model 4200 to no measurement complete SRO Walt 0 2 seconds Store result of serial poll of Model 4200 in 5 If bit 6 SRQ bit of Model 4200 service request byte does not equal 1 go to 370 If 6 does equal 1 SRO bit print MEAS COMP SRQ Display prompt on Model 85 Stop program Issue beep Go to 260 There has been no service request Check Is complete print DONE e the device Device Address HP Model 858 7 BEC Model 1020 2 BE
130. asurement parameter entries made in the Channel 3 mode do not respond and those previously made for Channel and Channel 2 remain active The recorder output is driven by Channel or Channel 2 as selected In Channel 3 operation the recorder output reverts to Channel I 04 Rear Input Duplicates front panel Channel input connector 06 Internal TMA MATE Requires 01B Option S 17 Two Inputs On Front Panel Requires 03 Option TABLE 1 2 SENSOR CHARACTERISTICS Onft and Norse PWR range SWR Lowest Range Impedance Freq Range Watts Rating RF Connector dBm Drift Norse typical Hi RMS 20 DIODE SENSORS 51011 48 100 kHz to 12 4 GHz 10W to 10 mw 100 kH2 to 2 GHz 500 60t0 10 dBm 2 GHz to 4 GHz 4 GHz to 11 GHz 11 GHz to 12 4 GHz 51012 4 100 kHz to 1 GHz 1 nW to 10 mw 300 mw 2 130 pw 750 6010 10 dBm 25 8 NIM 51013 4 100 kHz to 18 GHz t AW to 10 mw 300 mw 100 kHz to 4 GHz 1 3 500 60 t0 dam 25 dam 4 GHz to 0 GHz 1 5 10 GHz to 18 GHz 17 51051 4G 1 MHz to 26 5 GHz 1 nW to 10 mw 300 mw 1 MHz to 12 4 GHz 1 soa 60to 10 08m 25 12 8 GHz to t8 GHz 1 3 3 5 M 18 GHz to 26 5 GHz 1 9 51015 SE 100 kHz to 18 GHz 10 AW to 100 mw 100 kHz to 1 GHz soa 50 to 20 8 1 GHz to 2 GHz N M 2 GHz to 4 GHz 4 GHz to 12 4 GHz 12 4 GHz to 18 GHz 51033 6E 100 kH2 to 18 GHz 100 nw to 1 w 100 kHz to GHz 500 4010 30 dBm t GHz to 2 GHz N M
131. ation Recall dB reference level hold Initiate automatic zeroing cycle Enable display indication hold Perform mW automatic calibration Display measurement power Clear numeric entry to 0 Display measurement dB Zero ranges N through M N 0 through 6 0 through 6 both must used Enable autorange mode Enable hold range mode Enter N as high dB limit N 99 99 to 99 99 Set Instrument to range N N 0 through 6 Recall low dB limit Enter as hlgh dB limit N 99 99 to 99 99 All other commands controller dependent see controller instruction manual A 9 APPENDIX OPTION 4200 01A MODEL ADDRESS B Bus SwiTCH u amp 18 CONTROL E cere Vu BUFFER 3 ud 39 4 6218 REN IFC NOAC NRFO D831287A Figure 1 IEEE 488 Bus Interface Option 4200 01A Block Diagram A 38 handle data transfers between the Instrument data bus and the interface data bus adapter 2304 15 similarly enabled through gate A23U2a by control signal CSIF and a low address bit Address bits 1 and AS are set to select the data port of adapter A23U4 and signals WR and RD specify the write and read functions if data 15 to be written onto the Interface data bus signal WR Is activated thereby activating signal TE to buffer A25U6 Data
132. ations will be required 6 If no further adjustments are to be performed set the control board bit switch back to operate mode See Figure 5 3 d A D Converter Adjustment Conversion of volt age levels from analog to digital format is performed by the input module A D converter which operates in conjunction with the instrument microprocessor and appropriate software There are two adjustments associ ated with the A D converter an upscale adjustment and a downscale adjustment These adjustments have been made precisely during the instrument calibration process and should seldom if ever require readjustment how ever if it is desired to check and readjust the A D converter the procedure is as follows NOTE The input module offset and chopper adjust ments should be completed before proceeding with the A D converter adjustment 5 19 Section V Maintenance I Connect the instrument and test equipment as shown in Figure 5 5 Turn on the instrument and test equipment and allow a warmup period of at least 30 minutes 2 Set the instrument controls as follows a Set the control board bit switch to calibrate mode 1 See Figure 5 3 b Press the and SELECT CHNL keys on the keyboard if the channel 1 input module is to be adjusted press the 2 and SELECT CHNL keys on the keyboard if the channel 2 input module is to be adjusted c Press the 0 and RANGE HOLD keys on the keyboard 3 Set the range calibrator
133. ay 8 valld recorder outputs will be obtained for display Indications of 80 dB 0 volts to 30 dB 1 1 volts 6 On Page 5 22 paragraph 5 34 replace the following text With 1 000 mW Indicated on the LED display check the Indication on the digital multimeter 1 should be 98 to 1 00 volts If the Indication Is correct proceed directly to step h If the Indication Is Incorrect proceed to step f f If the digital multimeter indication In preceding step e was Incorrect set the control board bit switch to CALIBRATE MODE 1 Refer to Figure 5 5 and press the dB LIMITS LO key on the keyboard The LED display wili show gain modifier of approximately 3600 Calculate a revised gain modifier value to obtain the required correction For example If the digital multimeter Indication were 90 volts 0 4 low and the dB LIMITS LO key recalled a gain modifier of 3500 the revised gain modifler value would be 1 004 X 3500 5514 Enter this revised gain modifier value by pressing the following keys on the keyboard 3 5 1 4 dB LIMITS LO dB LIMITS LO revised value should appear on the LED display 4 Reset the control board bit switch to OPERATE MODE O Refer to Figure 5 3 Note the Indication on the digital multimeter 1 should be 98 to 1 00 volts Repeat steps f and If necessary until the correct Indication 15 obtained h Set the power meter calibrator output to 0 126 mW and observe the Indica tions o
134. bra tion procedures for this sensor are the same as those for other sensors except that a 50 ohm to 75 ohm transformer is required between the power meter calibrator and the sensor loss or gain introduced bv the transformer must be taken into account during the calibration procedure For example if a transformer with a loss of 0 05 dB at MHz is used the LED display indications must be reduced by 0 05 dB while the input levels remain the same NOTE When making final calibration checks of the sensor the transformer loss in the example above be compensated for by entering cal ibration factor of 0 05 dB into the instrument 5 41 Calibration Notes Model 4200 6 Sensor 30 dBm Range 5 42 The maximum output level of the Model 25A cali brator which is recommended for instrument calibration is 20 dBm Because levels of 20 to 30 dBm are re quired for checking or calibrating the highest range of the 4200 6 sensor an amplifier with an exact gain of 10 in power and a capability of delivering 1 watt into 50 ohms at 1 MHz is required The procedure which follows outlines an alternate method for checking this range a Calibrate and or check the instrument with the 4200 6 sensor on all ranges except the highest 30 dBm range as outlined in paragraph 5 33 b Connect the instrument and test equipment as shown in Figure 5 7 A small fan directed at the Model ZHL 3A will minimize drift The exact attenuation of t
135. c 5 31 Input Module Adjustments adjust the input module proceed as follows a Gaining Access to Adjustment Controls To gain access to input module adjustment controls remove the four screws that attach the input module cover and remove the cover If the instrument is equipped with two input modules option 03 the channel 2 input module will have to be removed temporarily to provide access to the channel input module The removal procedure for the channel 2 input module is as follows I Remove the four channel 2 input module cover attaching screws and remove the cover 2 Remove the channel 2 chopper by unplugging it and positioning it out of the way 3 Disconnect the voltage supply cable 4 Disconnect the the 40 pin bus connector CONTROL P C BOARD Figure 5 4 Non Volatile RAM Cell Test and Connection Points 5 18 5 Remove the four screws that attach the channel 2 input module to the side frames of the instrument and remove the channel 2 input module Take care to ensure that no adjustments are disturbed 6 Reverse steps through 5 to install the channel 2 input module in the instrument b Offset Adjustments To perform input module offset adjustments proceed as follows 1 Turn on the instrument and the Model 2500 range calibrator and allow the equipment to warm up for at least 30 minutes 2 Connect the equipment as shown in Figure 5 S 3 Set the instrument controls as follows
136. capability LEO NO EXTENDED LISTENER capability SRI SERVICE REQUEST capability RLI REMOTE LOCAL capability LOCAL LOCKOUT capability PPO NO PARALLEL POLL capability DCO DEVICE CLEAR capability DTI DEVICE TRIGGER capability co NO CONTROLLER capability MLA MTA My Listen Address My Talk Address 6 INSTALLATION A 7 Option 4200 01A consists of interface board A23 Electrical Interconnections are shown in Figure 7 8 Install the inter face board proceed as follows Turn off power to the Instrument 0 Remove the screws that secure the top cover of the instrument and slide the top Cover back and off Cut the cable tie the Instrument that holds the extra power plug the piug with two blue wires and one black wire d Remove the six screws that fasten the control board and replace them with the six mounting posts supplied with the 018 package Position the Interface board In the Instrument so that the mounting holes the Interface board line up with the mounting posts the Instrument Attach the inter face board to the mounting posts with six 4 40 screws and lockwashers supplied with the Interface board f Connect the 40 pin ribbon connector to the front edge connector of the Interface board 4 Connect the power plug in the instrument to the 4 brown connector on the Interface board A 8 OPERATION A 9 Address Assignment Before using the Instrument in the G
137. capability SRI Service Request capability T6 Basic Talker Serial Poll Unaddress if MLA 112 Remote Local capability No Local Lockout Talker Only capability PPO No Parallel Poll capability TEO No Extended Talker capability DC0 No Device Clear capability L4 Basic Listener Unaddress if MTA No Listener DTI Device Trigger capability Only capability CO No Controller capability Note MLA Mv Listen Address MTA My Talk Address In addition to the talk and listen commands the 4200 responds to the following GTL Go to local GET Group Trigger UNL Unlisten UNT Untalk IFC Interface Clear REN Remote Enable Output Data Format abcsddddEsd S R cr if ab Mode power dBm d Data digit d Data digit c Channel number Exponent marker 5 Status code s Sign s Sign R Range code Output Data Speed Free run access time is 55 ms or 18 readings per second 03 Input Channel 2 Allows display of either Channel 1 or Channel 2 or Channel 3 which is Channel 1 minus Channel 2 expressed in dB Requires use of two power sensors Precludes use of option 02 Channel operates independently of Channel 2 Measurement parameters are entered and stored separately for each channel Section I Introduction 1 8 TABLE 1 1 PERFORMANCE SPECIFICATIONS Cont In Channel 3 operation GHz entry applies the appropriate calibration factors for that frequency separately to Channel and Channel 2 Other me
138. compare waveforms and voltages with those shown in Figure 5 2 Correct indications will essentially eliminate the input module as the source of an instrument malfunction however incorrect indications will not necessarily localize the problem to the input module because the input module depends on proper operation of the control module for such functions as ranging analog to digital conversion and recorder and meter output If incorrect indications are obtained localization of the problem using the oscilloscope and digital multimeter may be a long and tedious process a simpler approach may be to proceed with signature analysis c Display Module Proper operation of the display module is generally self evident Incorrect operation does not necessarily mean that the problem is in the display module the control module may be malfunctioning The simplest and quickest way to check the display module is to perform the visual and signature analysis checks specified in paragraph 5 22 d Control Module If normal indications are ob tained in checking the power supply input and display modules the problem must be in the control module however it is very unlikely that this situation will occur because it is virtually impossible for the input and display modules to operate properly if the control module is malfunctioning Signature analysis is the best way to localize a problem in the control module 5 20 SIGNATURE ANALYSIS FREE RUNNING T
139. controls to range 0 and 500k source resistance and press the ZERO button 4 Zero the instrument by pressing the ZERO key on the keyboard 5 Upon completion of the zeroing operation press the 5 and RANGE HOLD keys on the keyboard 6 Set the range calibrator to range 5 and release the ZERO button The indication on the instrument LED display should be 3685 If the indication is incorrect adjust potentiometer on the input module as required to obtain the 3685 indication on the LED display 7 Set the range calibrator to range 2 Press 2 and RANGE HOLD keys on the instrument and record the displayed reading 8 Set the range calibrator to range and adjust R 1 for one tenth of the reading recorded on range 2 For example if the range 2 display was 3680 set range to display 368 NOTE If there is not enough range of RI or RII center RI and RIT under the conditions of MODEL 2500 RANGE CALIBRATOR paragraph 6 above and adjust R44 to obtain a display of 3 685 on range 5 Then repeat para graphs 7 and 8 above There is some interaction between and R11 so recheck adjustments 9 Set the control board bit switch back to OPER ATE MODE See Figure 5 3 NOTE Data has been entered into the non volatile memory of the instrument at the factory for the instrument and for the sensor s ordered with the instrument of the factory entered data is provided under the right side cover of the instrument
140. d at any time C Observe the digital multimeter indication it should be approximately 3 volts with input power to the instru ment turned off If the indication is much lower than 3 volts replace the cell in accordance with the procedures in paragraph 4 25 5 27 Non Volatile RAM Cell Replacement See Figure 5 4 The replacement time for the cell is expected to be 10 years from the time of manufacture This is the shelf life of the cell H cell replacement is needed restoration of all instrument calibration data will be required To replace a defective cell proceed as follows CAUTION Use care to avoid shorting the leads of the replace ment cell This will cause discharge of the cell and result in reduced cell lifetime Remove the control printed circuit board from the instrument b Remove the insulating shields from the non volatile RAM section c Disconnect the positive lead of the defective cell bv cutting the lead d Unsolder the defective cell using low wattage soldering iron and remove excess solder rom the mouni ing holes 5 17 Section V Maintenance e Install the replacement cell observing cell polarity f Solder the negative terminal of the cell first Then as quickly as possible solder the positive terminal g Check the non volatile RAM current by measuring the voltage across resistor R6 This voltage should be less than 525 microvolts h Measure the voltage at pin 12 of integ
141. d rear panels so that the sensor connections to the second power sensor connector on the rear panel for those applications where sensor connection to the rear of the instrument may be more convenient second power sensor connector is connected in parallel with the front panel SENSOR connector Refer to Figure 7 8 F 3 OPERATION F 4 operate an instrument equipped with the 4200 5 17 option connect the power sensor cable to either the front panel or rear panel input channel connector as desired and affix the shieid supplied with the option to the unused connector Then proceed with operation as described in Section of the 4200 manual NOTE Do not attempt to use both input connectors at the same time use only one and make sure That the shield is affixed to the other BOONTON ELECTRONICS CORPORATION MODEL 4200 INSTRUCTION MANUAL SUPPLEMENT FOR THE MODEL 4200 5 21 June 17 1987 instruction manual suppiements are issued as required to correct errors In a manual and to adapt the manual to changes made after Its printing Make the following additions to the Manual 1 The following Items have been added to the Model 4200 for the 5 21 Batterles BT2 and 2 1 5 V alkaline batteries repiace BTI Refer to Figure 1 b An Elapsed Time indicator and assoclated 357 k ohm resistor Refer to Figure 1 1 k ohm resistor Is connected to the recorder output and rear panel ground to p
142. d value will be recalled to the front panel These functions L H D F S R J U V thus operate dual mode When the instrument Is the store or recall mode the display will blink to indi cate that the Instrument Is not In the measurement mode Instrument Is returned to the measurement mode by sending any of the following P B 0 1J OJ 10 00 OV 1U or 04 B 21 Suppose that 1 Is desired to store the current power level dBm into the dBm reference so that all future readings will be referenced to the current value Allowance must be made for the possibility that the current value Is a dB relative value To do this the current dB value must be read the existing 48 reference must be recalled the true dBm value must be computed and this value must be stored into dB reference calculator couid be Instructed as foliows red 716 V S wrt 716 R red 716 X S V X gt Y wrt 716 Y Note that R is used twice In the program the first time to obtain the existing value for the dB reference and the second time to store the computed value Also note that the two read statements red aach fetch a different value the first value Is the power value In dB and the second Is the dB reference 8 22 Output Data Format The data output of the instrument consists of two numeric values The first Is the numeric data In the display and the second is the status Information The no
143. d within the specified accuracy up to IW accuracy cannot be guaranteed for pulse power measurements with instantaneous 35 uW for Series 4200 4 sensors peaks exceeding 350 uW 3 29 High Frequency Measurements At frequencies abovve GHz the appropriate sensor calibration factor niust be entered through the keyboard if the specified accu racy of the instrument is to be realized Refer to paragraph 3 18 NOTE Model 4200 2 4200 4B 4200 4 4200 5B 4200 Section III Operation 5E 4200 6E and 4200 7E 4200 8E and Waveguide Sensors are calibrated for use with a 50 ohm source model 4200 4C sensors are calibrated for use with a 75 ohm source Impedance mismatch results in in creased SWR which affects measurement accuracy This effect be reduced by inserting a low SWR attenuator SWR less than 1 10 or a low loss tuner between the source and the sensor 3 30 Temperature Effects Specified instrument accura cies apply over an ambient temperature range of 21 C to 25 C Operation outside this temperature range causes some additional error Refer to table 1 1 for accuracy versus temperature Figure 3 3 shows typical temperature characteristics of sensors and Figure 3 4 shows typical temperature characteristics of the instrument sensors combined NOTE For best zero stability of the instrument allow the instrument and sensor to reach a stable temperature 3 31 SWR Measurements The high upper frequency l
144. dvisable to locate the sensor away from heat sources when using the most sensitive ranges of the instrument If the instrument is to be used to measure the output of equipment that gener ates heat significantly above the ambient temperature 2 short length of coaxial cable or solid line having the same characteristic impedance as the sensor may be used between the sensor and the equipment undergoing test to allow heat to dissipate before reaching the sensor If such a cable is used the length must be kept as short as possible for operation at the high end of the frequency range cable losses and an increase in SWR will tend to degrade mea surement accuracy NOTE The front panel SENSOR connector is the input connector for channel measurements If the instrument is equipped with option 03 a sensor may be connected to the rear panel connector marked SENSOR the same condi tions apply to this sensor connection The rear panel connector is the input connector for channel 2 measurements b Recorder Output Recorder connector J20 type BNC on the rear panel provides an analog dc voltage for application to a remote recorder The output resistance is approximately 9000 ohms delivering milliampere into a 1000 ohm load for full scale input in the power mode The analog dc voltage is proportional to the following 1 In the power mode it is proportional to displayed power with 10 volts for full scale each range either channel
145. e all panel functions are avallable to the operator This Includes all of the con 04225500 53442800A 53442900A TABLE 2 Bit Switch 8 7 6 5 4 5 2 TABLE 1 4200 06 Option Items Location Replaces A23 Interface Bd 5 Control Bd 5 Control Bd ditions preset during power up When the system controller places the 4200 06 Into the REMOTE mode the above Initial Tzations will be restored All panel controls 1 tive whlle the 4200 06 is In REMOTE mode E 9 The 4200 06 option supports two channel operation If the second channel hardware Is Installed Attempts to access a non ex stent channel will generate an Illegal channel error message first channel Is addressed as CHO or 00 and the second as or CHOI 10 OPERATION E 11 Users of this option must be famillar with the MATE standard Oniy the speclflc CIIL commands and protocols applicable to the 4200 are discussed this supplement E 12 MATE measurement cons sts of the follow ng operations SETUP FNC command b CLOSURE CLS command INITIATION INX command d RESULT FTH command DISCONNECT command f RESET RST command E 13 Each of the first three steps SETUP CLOSURE and INITIATION must be done In that sequence An error message will be generated If the requisite prior steps have not been successfully performed 042317010
146. e Analyzer Switch Connection Bit Switch Measurement Function Setting Point 1234 56718 Item Point Signature Any setting Common 5V 1 3 pin 30 IC3 31 1C3 pin 32 IC3 pin 33 IC3 pin 34 IC3 35 103 36 IC3 37 IC3 38 IC3 39 pin 40 IC3 pin pin 2 IC3 pin 3 IC3 pin 4 pin 5 This test checks the output of the proper address field CPU IC3 however item connected to address line could be responsible for an incorrect signature on that line O open TABLE 5 3 CONTROL BOARD MEMORY DECODING TEST Signature Analyzer Switch Connection Bit Switch Measurement Function Setting Point 1234 5678 Item Point Signature Any setting This test checks decoding for selection of memory integrated circuits O open 5 8 Section V Maintenance TABLE 5 4 CONTROL BOARD I O DECODING TEST Signature Analyzer Switch Connection Bit Switch Measurement Function Setting Point 1234 5678 Point Signature Any setting Common 5V IC14 pin 1 4 2 4 3 4 pin 4 IC14 pin 5 This test checks decoding for selection of I O integrated circuits O open TABLE 5 5 CONTROL BOARD ROM 0 TEST Signature Analyzer Switch Connection Bit Switch Measurement Function Setting Point 1234 56 78 Point Signature START STOP CLK Any setting This test checks the program content of ROM
147. e fuse should be a 0 3 ampere MDL Slo Blo type for 220 or 240 voit opera tion it should be a 0 2 ampere MDL Slo Blo type If the rating of the fuse is incorrect install a fuse of the required rating in the fuseholder WARNING The instrument is designed to operate from a 3 terminal one ground ac power receptacle If only a 2 terminal ac power receptacle is avail able use a 3 prong to 2 prong adapter Connect the ground wire of the adapter to the power receptacle ground to eliminate a potential shock hazard to the operator d Connect the power cord between the ac power con nector on the rear panel of the instrument and the ac power receptacle with adaptor if necessary 3 9 PRELIMINARY CHECKOUT NOTE The following checkout procedure is intended merely to demonstrate that the major circuits of the instrument are operating before the instru ment is placed for service For a detailed check of the instrument against performance specifica tions refer to paragraph 3 34 3 10 To perform the preliminary checkout proceed as follows a Set the LINE switch to the ON position b Check operation of the LED display and the numerical keys by pressing the following keys the 3 1 Section III Operation MODE RANGE LIMITS CALFAC SELECT REF LVL PwR REF 54321 RECORDER ACCESSORY SEMAL 9892 9864 3109 CMLL CHNL2 01 03 iu CORP Il
148. e microprocessor to compute and store zero corrections for each range and the instru ment is thereafter corrected on each range in accordance with the stored data This method is considerablv simpler faster and more accurate than manual zeroing i Automatic Sensor Compensation Calibration fac tors for up to eight sensors may be stored in the micropro cessor Calibration data is written into non volatile storage at the factory for sensors ordered with the instrument calibration data may also be written into storage in the field When the sensor being used and the measurement frequency are specified through front panel keyboard entry measurement values are corrected automatically with calibration factors Alternately the calibration factor in dB for a particular sensor being used may be entered through the keyboard and the measurement values then corrected automatically in accordance with the correc tion factor Both power and dB values are corrected j Built in Power Reference An accurate 1 000 milli watt 50 MHz signal for instrument calibration is provided by a built in power reference Calibration is simply a matter of connecting the sensor to the power reference and press ing key the calibration correction is computed automati cally by the microprocessor The calibration circuit has built in protection against inadvertent key actuation when the sensor is not connected to the power reference calibra tion correct
149. ed in the table An incorrect signature is evidence of malfunction Section V Maintenance d If an incorrect signature is noted try replacing the integrated circuit s most intimately associated with the point at which the incorrect signature was obtained For example an incorrect signature inthe address field would point to integrated circuit IC3 on the control board but the problem could be caused by any other integrated circuit or component tied to that address line A signature of 0000 is obtained with the signature analyzer probe connected to common ground Some other items which will produce this signature are 1 A node stuck at zero 2 A node at the signature analyzer clock frequency f A signature of 755U is obtained with the signature analyzer probe connected to 5 volts Some other items that will produce this signature are 1 A node stuck at logic 1 2 Any signal with a specific relationship to the clock signal if the clock signal is signal RD from the microprocessor signals IORQ WR and RFSH arc examples of signals that will produce this signature g Upon completion of the free running checks turn power off Then reinstall data bus connector PI in socket JI on the control board and reinstall jumper at connector J5 NOTE If programmed tests to be performed leave jumper disconnected from connector J5 5 22 SIGNATURE ANALYSIS PROGRAMMED TEST PROCEDURES NOTE Perform the free ru
150. eeded FACTOR GHz determination service request Enter N as sensor number Recall state of U to display N 1 through 8 0 or 1 Recall sensor number Disable service request at measurement completion Enter M as channel number M 1 through 3 Enable service request at measurement completion Recall channel number Enable Service Request on Enter N as dB reference settled reading level N 99 99 to 99 99 Recall state of V to display Recall dB reference level 0 or 1 Initlate automatic zeroing Disable display indication cycle hold Parform 1 mW automatic Enable disptay Indication Ibration hold Clear numeric entry to 0 Display measurement in power Zero ranges N through M Display measurement dB N 0 through 6 0 through 6 Enable autorange mode both must be used Enable hold range mode Set instrument to range N N 0 through 6 Enter as high dB limit 99 99 to 99 99 Enables auto average Recall low dB limit Enter N as number of samples to average Enter N as high dB limit N 99 99 to 99 99 ALI other commands are controller dependent see controller instruction manual APPENDIX B OPTION 4200 018 ADORESS DIAGRAM 521279 Figure 8 1 JEEE 488 Bus Interface Option 4200 018 Block Diagram 8 56 Continued program execution A23U14 the program timer Is anly used by the 06 MATE option for timing required under CIIL operation 2301 and A23U2
151. el Do not replace components with the power cable connected Under certain conditions dangerous voltages may exist even though the power cable was removed therefore always disconnect power and discharge circuits before touching them DO NOT SERVICE OR ADJUST ALONE Do not attempt internal service or adjustment unless another person capable of rendering first aid and resuscitation is present DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT Do not install substitute parts or perform any unauthorized modification of the insturment Return the instrument to Boonton Electronics for repair to ensure that the safety features are maintained SAFETY SYMBOLS This safety requirement symbol located on the rear panel has been adopted by the International Electrotechnical Commission Document 66 Central Office 3 Para graph 5 3 which directs that and instrument be so labeled if for the correct use of the instrument it is necessary to refer to the instruction manual In this case it is recommended that reference be made to the instruction manual when connecting the instrument to the proper power source Verify that the correct fuse is installed for the power available and that the switch on the rear panel is set to the applicable operating voltage The CAUTION sign denotes a hazard It calls attention to an operation procedure CAUTION practice or the like which if not correctly performed or adhered to could result in damage to or destruction of
152. el of the adjustable power source to 0 dBm b Press the MODE dB key and note the indication on the LED display c Enter a 0 2 dB calibration factor bv pressing following keys 0 2 CAL FACTOR dB d Ascertain that the indication on the LED display equal to the value noted in step b plus 0 2 dB e Enter a 2 GHz calibration factor by pressing the following kevs 2 CAL FACTOR GHz f Determine the calibration correction for 2 GHz from the chart on the barrel of the sensor Ascertain that the Section LED display indicates the value noted the chart on the NOTE sensor barrel If the instrument is equipped with the 03 option repeat the minimum performance NOTE standards tests for channel 2 For proper calibration factor correction and instrument accuracy it is essential that the sensor number entered into the instrument prior to measurement agrees with the number indicated on the barrel of the sensor used for the measurement Calibration factors that are invoked are operative in both the dB mode and the PWR mode 3 15 Section IV Theory of Operation SECTION IV THEORY OF OPERATION 4 1 INTRODUCTION 4 2 The instrument is a general purpose RF microwatt meter capable of measuring power levels from nW 60 dBm to I W 30 dBm It is designed to operate conjunction with Boonton Electronics Corporation Series 4200 power sensors The usable frequency range depends upon the sensor u
153. ermine the calibration factor value for this frequency press the CAL FACTOR GB key Pressa MODE key ora RANGE key to return the instrument to the operate mode Example To specify a measurement frequency Press Display 3 0003 0003 3 003 3 CAL FACTOR GHz 3 19 REF LEVEL dB Selection The instrument normally uses mW 50 ohms as a reference for computing dBm measurement values the dBm annunciator is lighted dur ing suca operation The REF LEVEL dB key used in conjunction with the numerical keys enables the operator to select any other desired dB reference level subsequent level indications are with respect to the selected reference and this display mode is indicated by lighting of the dBr annunciator a A dB reference level is entered keying in the desired numerical value in dB using the numerical keys and then pressing the REF LEVEL dB key Example To enter a dB reference level of 15 3 dB Annunciators Press Display dBm dBr 0001 Liphted Ott 5 0015 Lighted OIT 0015 Lighted OIT 3 015 3 Lighted OIT CHS 015 2 Lighted ort REF LEVEL dB OIT Lighted Section III Operation b To return to the dBm measurement display mode enter a 0 dB reference level or press the CLR and REF LEVEL dB keys Example Annunciators Press Display dBm dBr 0 0000 otf Lighted REF LEVEL dB Lighted The maximum display capability of the LED display is 99 99 dB When operating in the d Br mode keep
154. es an analog DC voltage for application to a remote recorder The output resistance 15 1000 ohms The analog DC voltage 15 proportional to the following A In the power mode It Is proportional to displayed power with 1 volt for scale each range elther channel 2 In the dB mode It Is proportional to displayed dBm with the relationship shown below Recorder Output Series Series Serles 4 7 K KA Q 5 8 6 dBm volts volts volts 30 bon 9 20 9 8 10 9 8 7 0 8 7 6 10 47 5 20 425 4 30 5 4 5 40 4 5 2 50 5 2 60 2 E Page 1 of 3 5 On Page 5 11 paragraph 3 55 replace the following text b In the dB mode the DC output level Is proportional to dBm according to the formula Series 4 7 K KA Q Sensors VOUT 8 dBm volts Example The voltage output at 20 dBm would be 20 volts 6 volts 8 155 Thls output 15 functlon of dBm only but Is effected CAL FACTOR entries the Channel 3 mode of operation Option 03 the recorder output 1 pro portional to the difference dB of channel 1 minus Channel 2 This output 15 effected by both the callbratlon factors and the dB reference levels entered In each channel The equation Is RECORDER OUT VOLTS dBch dB CAL FACT CH dB REF ch 1 dBch 2 dB CAL FACT CH2 dB REF ch 2 a 7a 31 90 Faut ROOTS y Or equivalent RECORDER OUT VOLT dB d sol
155. ge calibrator set to range 5 and Rs 500kQ or with instrument channel 2 sensor connected to POWER REF connector and POWER REF ON switch set to on c Turn the input power off then back on If the non volatile RAM is operating properly the instrument LED display will show 1111 d Repeat step c several times The LED display should always show 1111 not the error indication e Upon completion of this test turn off input power to the instrument remove the diagnostic ROM from the con trol board and install integrated circuits IC5 and IC6 in their sockets on the control board making certain that the Correct pin orientation is observed 5 26 Non Volatile RAM Cell Test To test the non volatile RAM cell proceed as follows CAUTION The following test procedure must be adhered to strictly otherwise instrument data stored in the non volatile RAM will be lost Do not attempt to take measurements other than those specified Take all Necessary precautions to ensure that no terminals are shorted to another terminal or to common ground NOTE The load imposed on the cell by the non volatile RAM is 5 25 microamperes or less With this load the cell has a rated life of at least 100 000 hours which is greater than 10 vears a Remove the non volatile RAM cover to gain access to the cell terminals b Connecta digital multimeter between the cell positive terminal and ground ensuring that the cell is not shorted to groun
156. gnal ZCLK which is generated by A23U4b and divided by A23U6 ZCLK also suppiles the required clock to the CPU A23U7 Interface control signal transfer n the opposite direction Is achieved bv reversing the states of signals and active causes signal TE to buffer A23U18 to become active thereby reversing the direction of data flow through the buffer Interface control signals from the Interface data bus are then written onto the Interface control bus through adapter A23U16 and buffer A23U18 8 40 handle data transfers between the Interface data bus and the Interface connec tor A23J2 adapter A23U16 Is similarly enabled through decoder A23U12 by low address bit ABA Address bits AO Al and 2 are set to select the data port of adapter A23U16 and signalis IOWR and IORD specify the write and read functions If data 15 to be written to the Interface connector A23J2 signal TWR 15 activated thereby activating sIgnal to buffer to buffer A23U17 Data on the Inter face data bus 15 then transferred through adaoter A23U16 and buffer A23U17 to connector A23J2 For data transfers from connector A23J2 to the Interface data bus signal Is Inactive and signal TORD Is active Signal TE to buffer A23U17 Is deactivated by adapter A23U16 to reverse the direction of data transfer through the buffer 8 41 MAINTENANCE B 42 Generali The Interface board does not operate alone but rather In conjunction with the Model
157. h the chopper The de modulator consists essentially of a sample and hold switch composed of solid state switches 100 and IC10c and associated circuitry Switches IC10b and ICI0c are controlled by the 94 Hz drive signals from flip flops 1C8a and 1 8 The sampling point and period of the sample and hold circuit has been chosen to minimize switching products and noise and to vary signal averaging in accordance with the signal level Switch C9a adjusts operating parameters automatically in accordance with instrument range the switch is activated through gates and 1 and demultiplexer ICI3 on the four highest ranges DC TO INSTRUMENT X INDICATES FACTORY SELECTED COMPONENTS When making your own probe you may use Zero Bias Schottky Detector Diodes such as the HP HSMS 2852 or HP HSCH 9161 Figure 4 2 Typical Series 4200 Sensor Schematic Diagram Section IV Theory of Operation 4 1 DC output voltage of the sample and hold circuit is amplified by an amplifier circuit composed of integrated circuits 8 9 and 4 and associated circuitry Integrated circuits 4 is a demultiplexer which decodes microprocessor supplied digital signals that define the selected range and adjusts an attenuator circuit accordingly the gain of the amplifier is 125 12 5 or 1 25 depending upon the selected range The full scale output voltage of the amplifier is2 25volts nominal on each range 4 22 The DC outpu
158. h the keyboard however does not cause automatic selection of that channel Sensor assignment to a particular channel can be changed at any time by selecting the channel through the keyboard then making another sensor selection through the keyboard C 7 Channel 1 and channel 2 operating pro cedures basically the same as those described In Section of this manual channel 3 mode of operation may also be selected In channel 3 mode the Input levels to channels I and 2 are both monl tored and the difference between the two Inputs dB only 15 displayed on the Instrument LED display The following para meters selected for channels 1 and 2 prlor to selectlon of the channel 5 mode remaln opera tive for channel 3 mode operation Autoranging or range hold for each chan nel b Limits for each channel dB reference levels for each channel d Sensor selection Zeroing f Calibration C 8 When channel 3 mode has been Selected the following keys are Inactive a ZERO b CAL MODE PWR d MODE dB aufcmaticaliy In thls mode e dB LIMITS LO and dB LIMITS f dB REF LEVEL dB g CAL FACTOR dB In channel 3 mode the Instrument does respond to a CAL FACTOR GHz key command applying the stored calibration factor for each selected sensor for that frequency Refer to Tables 5 19 5 20 5 21 and 5 22 For a description of recorder output In the Channel 5 mode see page 5
159. hanne number CHNL dB REF R dB r ference level for dB LEVEL 98 modes SENS 5 Selects Sensor Data Tabies e Special Functions Speclal functions Include the automatic zeroing and clear func tions Keyname GPIB Function ZERO Z Initiate an automatic zeroing cycle CLR Clear numeric entry zero CAL K Performs 1 mW Auto Calibration 8 3 APPENDIX OPTION 4200 01B 8 12 Continued f 488 Bus Command Extensions The following functions are added to bus opera tion Name GPIB Function Zero selected ranges 0 7 ADR ZERO Y Set to selected range 0 7 SET RANGE G These commands must be preceded by an appropriate argument The argument for Y Is the span of ranges to be zeroed for example 26Y specifles zeroing of ranges 2 through 6 If only one range 1 to be zeroed the argu ment must begin and end with the same code 9 11 to zero only range 1 The argu ment for G Is the range number 0 10 nW to 6 10 nW for 4200 4 sensors to be set From execution of the Y command to measurement mode the maximum time Is as follows Command Time Command Time 00 2 3 seconds 04 3 8 seconds 2 9 seconds 05 4 0 seconds 02 3 3 seconds 06Y 4 5 seconds 03Y 3 5 seconds The Y command allows no walt time for a sensor to reach a stable zero before actual offset storage occurs NOTE The G command sets the 4200 to an Internal range which may not correspond to the range code
160. he 10 dB 50 ohm attenuator must be known If the exact attenuation is unknown it can be determined with a reasonable degree of accuracy as follows 1 With the Model 25A the instrument and the 4200 6 sensor calibrated or checked as in paragraph a above set the output of the Model 25A to 10 dBm and connect the equipment as shown in Figure 5 8 2 Note the reading on the instrument display The attenuation value of the 10 dBm attenuator is 10 dBm minus the dBm indication on the instrument display Higher resol ution may be obtained by operating the instrument in the PWR mode and calculating the attenuation value from Attenuation dB 10 00 mW log as a l l Instrument indication mW with 10 dB attenuator c Using the test setup shown in Figure 5 7 note and record the indication on the instrument display as the Model 25A output level is varied over the range of 10 dBm to dBm A tabular form as shown in Table 5 28 is recom mended In Table 5 28 the first column is the Model 25A output setting and the second column lists indications typical of what might be expected These two columns amount to a calibration of the Model 25A Model ZHL 3A combination d Remove the 10 dB attenuator from the test setup shown in Figure 5 7 and connect the 4200 6 sensor directly to the Model ZHL 3A Set the Model 25A output to the levels listed in the first column of Table 5 28 and record the indications on the instrument di
161. he Instrument data bus are then written onto the interface control bus through adapter 2304 and buffer A23U7 Interface control signals are def inea as follows DAV DATA VAL O NRFD NOT READY FOR DATA ATTENTION IFC INTERFACE CLEAR REN REMOTE ENABLE SRQ SERVICE REQUEST EOI ENO OR IDENTIFY APPENDIX OPTION 4200 01A TABLE 5 MODEL 4200 DEVICE DEPENDENT STATEMENT SUMMARY Description Statement Description Recall high dB limit Statement Trigger a measurement Enter as CAL FACTOR dB N 3 00 to 3 00 Enable data averaging Disable data averaging Recall CAL FACTOR In dB Recall state of J to display 0 or 1 Enter N as frequency as CAL FACTOR GHz determination N 0 1 to 999 9 Disable 38 1 Imi t exceeded service request Recall frequency for CAL FACTOR GHz determination Enable 48 1 imi t exceeded service request Enter N as sensor number N 1 through 8 Recall state of U to display 0 1 Recall sensor number Disable service request at measurement completion Enter M as channel number M 1 through 3 Enable service request at measurement completion Recall channel number Enter N as dB reference level N 99 99 to 99 99 Recall state of V to display 0 or 1 Disable display indic
162. he instrument 4 43 The reference signal is generated by transistor oscillator Ql which operates at a frequency of approxi mately 50 MHz An automatic leveling circuit is used to maintain a constant reference power level Leveling is achieved by rectifying the oscillator output signal in the signal level detector circuit and comparing the resulting DC voltage with a stable DC voltage developed by voltage reference The difference voltage is amplified by operational amplifier Al and the output level from the Operational amplifier controls a varactor in a capacitive divider that determines the drive to the oscillator The output of the operational amplifier adjusts the varactor effective capacitance as required to adjust the drive to the oscillator in the direction and amount required to maintain a constant output level A second capacitive divider at the output of the oscillator divides the oscillator output signal and tends to provide some isolation from the load Because the source impedance of this divider is low a 50 ohm series resistor is used to establish the desired 50 ohm source resistance The output reference power level signal is available at the front panel POWER REF connector 4 44 DETAILED THEORY OF OPERATION POWER SUPPLY P C BOARD See Figure 4 7 4 45 power supply printed circuit board performs the following functions a Converts 100 120 220 or 240 volt 50 to 400 Hz ac line power to 5 5 5
163. ice request ait Limit Exceeded 654 10 01 Channel 1 low limit 10 Channel 1 high limit 1 01 Channel 2 low limit 1 10 Channel 2 high limit 8 27 Average Function Selectlon To reduce the effects of noise spurlous components etc at lower levels the Model 4200 employs signal averaging The amount of averaging is a function of signal level being highest on the lowest ranges and least on the highest ranges When the Instrument Is first turned on set of default values 15 asslgned as fol lows fs LEVEL RANGE CONS TANT 10 mw 6 1 1 mw 5 1 100 uw 4 10 uw 3 2 1 uw 2 4 100 nw 1 20 10 0 80 8 28 Increasing or decreasing these values may be accomplished by sending the Instrument N 1 to 127 and then X This new constant will now be In effect on all ranges and wil remain In effect until changed by entering different value or until OX Is sent to the Instrument or the Instrument 15 turned OFF ON after which the default values will be again be In effect The value of the constant In effect can be recalled by sending the Instrument X The default values when In the AUTO mode cannot be recalled the instru ment will return a O to indicate the AUTO mode 8 29 Typical Appllcation Suppose that It Is desired to measure Insertion loss or gain with an instrument equipped with option 4200 03 channel 2 measures Incident power and channel 1 measures output power The program show
164. ile RAMICS proceed as follows CAUTION This test will destrov and overwrite instrument data stored in the non volatile RAM necessitating reload ing of data This test should be made as a last resort only or if it has been determined stored instru ment data has already been lost or ts faulty NOTE Leave the Boonton Electronics diagnostic ROM installed on the control board as for the programmed signature analysis tests Make sure that jumper PS on the control board is connected to connector J5 a With power applied to the instrument set all eight segments of the bit switch on the control board to the open position b Observe the insirument LED display The LED dis play should provide an error indication cccc initially Section V Maintenance TABLE 5 8 CONTROL BOARD 4ABIO TEST Signature Analyzer Switch Connection Bit Switch Measurement Function Setting Point 123 45 67 8 Point Signature START STOP CLK ANDAAANNA o0000000 O This test checks operation of ports and B of the control module I collaterally O open closed ort the function of the bit switch is checked 9 TABLE 5 9 CONTROL BOARD 4 TEST Signature Analyzer Switch Connection Bit Switch Measurement Setting Point 123 45 67 8 Item Point Func
165. ill send three B 16 Continued bytes or characters Unlisten the calcula tor Talk Address and the Instrument Listen Address This information will configure both the calculator and the instrument for the data transfer After the last command byte has been accepted ATN will be released to the false state by the calculator All information on the bus is interpreted as data In this mode While in the data mode the calculator wlll send the character to the instrument At the Instrument this will be Interpreted as equivalent to pressing the MODE PWR key and that function will be exe Cuted Because there is no more data to be sent the calculator will send a delimiter the preselected ASCII code for the ter mination character Instrument recogni zes the termination character as an end of message signal and returns to the bus Idle condition 8 17 preceding discussion of the sending of a single programming byte serves to Illustrate two important points every data transfer is preceded by a command address preamble and each transfer Is terminated by a termination character In the preceding examole six characters were sent on the bus only one was a programming byte 8 18 The measurement mode functions P B A O and the special functions Z K do not expect any numeric value These functions al execute as received For example the following wil program dB and autorange mode wet 716 BA or wrt
166. imit and sensitivity of the instrument facilitate SWR mea surements with a slotted line SWR measurements require only comparative rather than absolute measurement values therefore the instrument may be used up to 20 GHz with a model 4200 4E sensor The front panel meter is especially useful for rapid determination of maximum and minimum power points SWR is determined by measuring the dB difference between a maximum and a minimum voltage point ona slotted line and converting this difference to SWR An adapter usually available from the slotted line manufacturer is required to couple the sensor to the slotted line To make slotted line SWR measurements proceed as follows a Connect the sensor to the sliding carriage using a suitable adapter b Ascertain that the signal source is turned off then zero the instrument c Turn on the signal source and slide the carriage along the slotted line until a point of maximum indica tion is located Adjust the source signal level and the probe setting for the least coupling that yields 41 dBm reading at the maximum point The incident power should be at least 0 dBm d Slide the carriage along the slotted line until a minimum indication is located Read the level at this point Subtract the measured level at the minimum point from that at the maximum point ignoring signs Convert the resultant AdB into SWR either through use of the SWR conversion chart Figure 3 5 or by computatio
167. ined by the sensor utilized Refer to Table 1 2 b Wide Power Range Depending on the selected sen sor the instrument will measure RF power from nW up to LW Temporary overloads up to 300 mW with Series 4200 4 sensors and up to 2W with Series 4200 5 sensors will do no permanent harm to the instrument or the sensor When measuring pulsed signals the power indications are accurate up to 20 microwatts peak power 200 microwatts with Series 4200 5 sensors External attenuators may be used to extend the measurement range of the instrument c Low Noise The instrument has been designed and constructed to minimize noise from all sources The sensor cable is of a special low noise design vigorous flexing causes only momentary minor deflections on the most sensitive range of the instrument The sensors are insensi tive to shock and vibration even sharp tapping on the sensor barrel causes no visible defleetion on any range Internal signal amplification occurs at approximately 94 Hz thereby reducing susceptibility to 50 or 60 Hz fields A low noise solid state chopper is used d LED Display Measured power levels are displayed by a 4 digit LED type readout with decimal points and minus sign Annunciators associated with the LED display indicate the units of measurement The result is a clear unambiguous readout that minimizes the possibility of misinterpretation The display is also used to show data being entered into non volatile memor
168. ing Ch 2 high 7 exceeding TABLE B 3 COMMAND FUNCTIONS Description Hold command keyboard entry will remain on the display The Instrument wilt continue to read probe in put but will not update the display The Instrument cycie time will be greatly reduced because of the measurement cycle overhead that 1 not executed during the hold command Service request command will be Issued by the Instrument upon comple tlon of a measurement SRQ on settled reading Raw data command average or smooth any of the measurements Limit command service request Jf any Is exceeded If a Imit 15 exceeded and a service request Js Issued the U command must be rearmed to be come operational again Trigger command this command Identical with the EEE 488 group execute trigger Initiates a measurement cycle INTERFACE INTERFACE CLEAR and DEVICE disarm alt the above comands and DEVICE disarm all the above commands APPENDIX B OPTION 4200 018 the last reading or the last the service request the Instrument will not the Instrument will Issue a d Data Entry Recall Functions These func tions enable entry or retrieval of numeric constants used by the instrument Operation reverts to the measuring state after data storage Keyname GP IB Function LIMITS L Low limit value in dB d8 LO LIMITS H High limit value 48 d8 HI SELECT N Selects c
169. ion which is most effective when measuring unknown or wide varying power levels is activated by pressing the RANGE AUTO key and the microprocessor then selects the appropriate measurement range automatically If input power levels exceed the upper measurement limit of the instrument an error indication cc04 appears on the LED display if input power levels are below the low measurement limit of the instrument the instrument displays 03 Ranging time isa function of a number of factors such as absolute level change in level analog response time and direction of change See Figure l 2and 1 3 The range hold function is useful whena series of measurements of approximately the same power level are to be made selecting this mode elimi nates delays due to ranging time The range hold function is useful only in the PWR mode When the RANGE HOLD key is pressed the instrument remains on the measurement range that was active at the time the key was pressed Input power levels that exceed the upper limit of this range cause anerror indication cc04 on the LED display input power levels below the low limit of this range result in fewer significant digits in the LED display lf the minimum capa bility of the instrument is reached the instrument diplays cc03 3 6 3 17 dB LIMITS Selection The dB LIMITS keys enable the operator to program high and low dB limits into the instrument input power levels outside these limits will cause ligh
170. ion Model 4200 Indication Level with 10 dB Atten Without 10 dB Atten Difference 20 02 dBm 30 03 dBm 0 01 dB 19 02 dBm 29 04 dBm 0 02 dB 18 06 dBm 28 07 dBm 0 01 dB 17 09 dBm 27 09 dBm 0 00 dB 16 12 dBm 26 11 dBm 0 01 dB 15 13 dBm 25 12 dBm 0 01 dB 14 15 dBm 24 13 dBm 0 02 dB 13 16 dBm 23 16 dBm 0 00 68 12 18 dBm 22 18 dBm 0 00 dB 11 17dBm 21 18 dBm 0 01 dB CALIBRATE MODE 2 switch No 2 open result Repeat the adjustment as necessary to obtain the de sired indication c Press the dB LIMITS HI key on the instrument front panel and note the value shown on the instrument display e Recheck the entire range starting with paragraph 5 43c d Increase or decrease this value as required in steps ot 5 or 10 counts returning the eontrol board bit switch to the At the conclusion of the procedure be sure to return OPERATE MODE switch No 2 closed and noting the the control board bit switch to the OPERATE MODE switch No 2 closed Section VI Parts List SECTION PARTS LIST 6 1 INTRODUCTION Table 6 2 Replaceable Parts list all the replaceable parts and includes the reference symbol description Mfr facturer s Federal Supply Code Numbers list the manufac turer s federal supply numbers Mfr s Part No and the BEC Part No Table 6 1 Manu 00241 01121 01247 01295 02660 02735 03838 04713 04901 06383 06776 07263 07326 13812 14655 17801 19701 TABLE 6 1 MANUFACTURER S
171. ion is limited to approximately 7 5 from the original factory set value Computed calibration corrections that exceed this range are rejected automatically and the in strument returns to its previous sensitivity lf the instrument is supplied with a 75 ohm sensor 4200 4C an adapter P N 950006 is also supplied This adapter is used between the power reference and the sensor to convert the Type power reference connector to 75 ohm Before calibration a 0 17 dB CAL FACTOR should be entered to compensate for the mismatch error that is introduced by the 75 ohm sensor k Pushbutton High Low dB Limit Selection High low dB limits may be entered through the front panel keyboard A front panel annunciator indicates when mea sured dB levels are outside the preset limits Signals are also activated at a rear panel connector to provide remote indi cations of out of limit measurements 1 Solid state Chopper Signal amplification in the instrument occurs at approximately 94 Hz Input signals from the sensor are converted into 94 Hz signal by a solid state low level input modulator chopper which represents a distinct improvement over electromechanical choppers Extended service life is assured through the elimi nation of contact wear contamination and other problems associated with electromechanical choppers m Signature Analysis Maintenance Connection facili ties to permit signature analysis maintenance are incorpo
172. ion of adjustments 5 35 Power Reference Adjustment To check and adjust the power reference output proceed as follows Connect a 50 ohm test probe to Model milli watt test set b Turn on the milliwatt test set and the instrument Allow the milliwatt test set and the instrument to warm up for at least 30 minutes Standardize the milliwatt test set in accordance with the manufacturer s instructions d Connect the probe of the milliwatt test set to the POWER REF connector of the instrument and note the indi cation the milliwatt test set The indication should he within 0 005 dB NOTE If the indication in step d is within the specified limits no adjustment of the power reference is required Proceed with the following steps only if the indication is outside the specified limits e Remove the bottom cover Remove the bottom front trim strip from the instru ment by removing the two screws one on each side that secure the strip g Locate the power reference adjustment See Figure 5 1 h Adjust the power reference adjustment R4 us required to obtain an indication af 0 dBm 0 005 dB on the milli wall test set 1 Restandardize the milliwatt test set and recheck the power reference Readjust the power reference adjustment as necessary j Turn off the instrument and the milliwatt test set Install the trim strips and cover 5 26 Entry of Sensor Calibration Factor
173. is loaded unless an error message is already present and the buffer is enabled A subsequent talk command on the 488 bus will cause the message to be sent to the controller E 3 APPENDIX E OPTION 4200 06 47 error message in the output buffer prevents further loading of the buffer until the message is sent over the bus a RESET occurs 48 syntax for the STATUS command is 5 lt gt lt 1 gt E 49 1f no error message exists In the out put buffer the following message is genera ted errors lt 5 gt lt gt lt 1 gt 50 MAINTENANCE 51 perform any of the maintenance pro cedures outlined in Section IV of the 4200 Manual set Interface Board Bit Switch 8 for native mode operation This will allow 1 488 access to Instrument calibration functions Restore the MATE configuration after maintenance procedures are complete E 52 REPLACEABLE PARTS 55 Table 6 2 lists all the replaceable parts and includes Reference Symbol Description Mfr Mfr s Part and the BEC Part No 54 SCHEMATICS 55 Refer to Figures B2 B5 and 84 for the schematics for the 4200 01B Option APPENDIX F OPTION 4200 S 17 APPENDIX F REAR INPUT OPTION 4200 S 17 1 DESCRIPTION NOTE The 5 17 option can only be used conjunc tion wiTh the 03 option F 2 Rear input option 4200 S 17 provides channel inputs on both the front an
174. l 5 14 The signature analysis technique is applicable only to the digital section of the instrument Some sections of the instrument employ both analog and digital circuits The input module for example receives a DC analog signal and amplifies the analog signal before converting it to a digital signal The power supply uses both digital and analog circuitry to develop the voltages necessary for instrument operation The discussion of these hybrid sections in Section IV of this manual will be helpful in maintenance and servicing 5 15 TROUBLE LOCALIZATION 5 16 Gaining Access To Internal Components To gain access to internal components of the instrument remove the top and bottom covers by removing the securing screws at the rear of each cover and then sliding the cover to the rear Figure 5 1 shows the location of ail major assemblies To gain access to these assemblies proceed as follows a Input Module To gain access to the input module remove four screws on in each corner and lift off the cover b Display Module To gain access to the display module remove the top and bottom covers remove the four screws that secure the front top and bottom trim strips and remove the top and bottom trim strips and front panels c Power Reference The power reference is secured to the front subpanel with two screws entering from the rear To gain access to the power reference follow the same procedure as for the display module
175. l on turn on and an interrupt signal under undervoltage or power down conditions When the instrument is turned on comparator Ala develops a positive output pulse when the output of the 5 2 volt regulated supply rises to a value approximately 150 mV below the nominal output voltage the exact power up signal point is adjustable by means of potentiometer R11 The positive output pulse of comparator Ala clocks flip flop IC6 to deactivate signal RESET to the micro processor on the control printed circuit board If the output voltage of the 5 2 volt regulated supply should drop below the reliable usable level during operation of the instrument and during instrument shut down com parator Ala switches its output level to a logic low thereby activating signal NMI to the microprocessor The microprocessor activates signal HALT which resets flip flop IC6 thereby latching signal RESET low to ensure resetting of the microprocessor to the start of the program CAPACITIVE DIVIDER Figure 4 6 Power Reference P C Board Detailed Block Diagram 4 13 14 Section IV Theory of Operation 1 5v VOLTAGE REGULATOR R v REF PSs R8 PT TP4 5 I5v CR3 v P8 VOLTAGE REGULATOR RI 162 5 Pi IO c5 I 5 R2 P BRIDGE GND s 4 RECTIFIER 1 CRI VOLTAGE 3 us SELECTOR ae a6 SWITCH i VOLTAGE P5 REGULATOR R4 4 il IC3 15 PTY isv RIG 8
176. n SWR is the antilog base 10 of Adb 20 Section Operation 3 10 3048 20d8m IOdBmO DEGREES CELSIUS USED WITH 4 SERIES SENSORS A USED WITH 5 SERIES SENSORS USED WITH 6 SERIES SENSORS 831375 Figure 3 3 Typicai Temperature Characteristics of Series 4200 Sensors 1048 2048 2 30 DEGREES CELSIUS USED WITH 4 SERIES SENSORS A USED WITH 5 SERIES SENSORS O USED WITH 6 SERIES SENSORS Figure 3 4 Typical Combined Temperature Characteristics of Instrument and Sensor Section III Operation A IM AN SES ME am EIN NAME VSWR LOG A per cn nh Ww EH FZ eld 5 11 pe TAERA VOLTAGE STANDING WAVE RATIO Figure 3 5 dB SWR Conversion Chart 3 32 Shielding Recommendations If the instrument is subjected to strong noise fields accurate zeroing may be difficult unless the sensor is shielded during the zeroing operation The simplest method of shielding is to connect the sensor to the device whose power level is to be mea sured first making sure that the device is turned off how ever in some instances the device may act as an antenna and introduce additional noise voltage into the sensor If this happens disconnect the sensor from the device stand the sensor end down on a copper plate and hold it down firmly so that the rim of the sensor connector makes good contact with the copper plate at all points
177. n below will request reference conditions and wait for the user to set them Following establishment of the reference the program 111 loop on Insertion loss gain measurements Each measurement Is triggered by the user Zeroing 15 prompted In the local mode at the beginning of the program Reading errors should they occur will be signalled by a double beep from the calculator normal measurements will give a single beep There will be one print iine per measurement reference value Js not printed this example Program Variable Usage P power measurement value R range value S status value Z dummy Input for prompts Program Statements Comments 0 cli 7 clear Interface 1 ent zero chl prompt for zeroing 2 2 2 rem 7 enable remote 3 wet 716 0 dBref auto set NAOR2NAORJN ch 3 4 ent ref prompt to set up measure Z ref 5 red 716 P S R read ref value status 6 If S 0 dsp test status error beep gto 4 7 wet 716 IN set ch 1 dBref P P RZN 8 beep ent prompt for measurement measure 2 9 red 716 P S R read measurement status 10 If S50 dsp test status 5 beep walt 100 gto 8 11 prt P dB gto 8 print measurement 12 end 8 30 The program In paragraph 8 25 also measures refiection coefficient if channel 1 measures reflected power and channel 2 measures Incident power The reference con APPENDIX B OPTION
178. n on the bus 15 Interpreted as data In this mode While In the data mode the calculator will send the character P to the instrument At the instrument this will be Interpreted as equivalent to pressing the MODE PWR key and that function will be exe cuted Because there Is no more data to be sent the calculator will send a delimiter the preselected ASCII code for the ter mination character The Instrument recogni zes the termination character as an end of message signal and returns to the bus Idle condition A 17 preceding discussion of the sending of a single programming byte serves to Illustrate two Important points every data transfer Is preceded by command address preamble and each transfer 15 terminated by a termination character In the preceding example six characters were sent on the bus only one was a programming byte 18 measurement mode functions P 8 A 0 and the special functions 2 do not expect any numeric value These functions all execute as received For example the following will program dB and autorange mode wet 716 or wet 716 Note that the sequence is unimportant except that each function executes In the order it Is received on the bus A 19 Suppose that the Instrument Is to be zeroed automatically and then asked to send the reading In the PWR and RANGE AUTO mode The HP 9825 calculator could be instructed as fol lows wet 716 2 red 716
179. n the Instrument LED display and on the digital multimeter The milii volt indication on the digital multimeter should equal the value shown on the LED display 1 count If the digital multimeter indication Is Incorrect adjust potentiometer R55 on the Input module board as required to provide the proper digital multimeter Indication Page 2 of 3 90 PLACE CN 5 BOTTOM SICE 32 TO Ls 29 me 1 1 24 28 2 26 25 2 PLACE APOROx 1 AS SHOWN lt i DAES NOTE 1 P2 P3 To BE FLUSH SQUARE WITH BOARID SURFACE 22 21 20 19 18 17 4 18 14 13 12 11 NOTE Flgure 1 5 of THIS SHEET SPECIFIES PART NUMGER C4223401A ET ESET SEE SEPARATE gom FOR PART NUMBERS x nonor ON RANDOLPH s BOONTON NEW JERSEY sess Pw assy 10 9 8 7 ee SAMPLE CALIBRATION CERTIFICATE BOONTON ELECTRONICS corr INST SERIAL 289319BC 5 16 DATE SENSOR SERIAL 13523 TYFE EPR MSs Si4BC and S22BC used the 186 option This is a step by step procedure for reentering the calibration data into the NON VOLATILE MEMORY of this BOONTON ELECTRONICS model 4208
180. nals during dB measurements sequence indicated and noting the LED display Press Display CLR 0000 0000 0 000 0 I 00 01 2 0 012 3 0123 CLR 0000 4 0004 5 0045 6 0456 7 4567 CLR 0000 8 0008 9 0089 CHS 0089 CLR 0000 c Enter measurement parameters by pressing the fol lowing keys I SELECT CHNL MODE dB RANGE AUTO 0 CAL FACTOR dB 0 REF LEVEL dB 90 CHS dB LIMITS LO 90 dB LIMITS HI d Connect the sensor cable to the front panel SENSOR connector and connect the sensor to the free end of the sensor cable Note the sensor number indicated on the barrel of the sensor and enter this number through the numerical keyboard by pressing the numerical Key corres 34 LINE VOLTAGE selector switch INPUT connector connector connector Control Indicator Figure and or Connector Index No Function Power connector Provides connection power cord Provides means for selecting proper line voltage Provides means for connecting sensor to channel 2 input option 03 INPUT Alternate position for INPUT channel 1 option 04 RECORDER Provides means for connecting analog DC voltage to remote recorder ponding to the sensor number and then pressing the SELECT SENS keys Example 2 SELECT SENS e Check tosee that the dBm and annunciator lighted f With zero input to the sensor press the ZERO the instrument will now begin the zeroing process instrument display du
181. nd ascertain that the LED display readout agrees with the output level of the adjustable power source within the specified dB limits Power Source Level LED Display Tolerance 50 dBm 0 1 dB 40 dBm 0 05 dB 30 dBm 0 05 dB 20 dBm 0 05 dB 10 dBm 0 05 dB 0 dBm 0 05 dB 10 dBm 0 05 dB dBm 0 055 dB 2 dBm 0 06 dB 3 dBm 0 065 dB 4 dBm 0 07 dB 5 dBm 0 075 dB 6 dBm 0 08 dB Section III Operation Power Source Level LED Display Tolerance 7 dBm 10 085 dB 8 dBm 0 09 dB 9 dBm 10 095 dB NOTE If the dBm indications are within limits it may be assumed that power mode indications are also within limits dBm indications are computed from power measurements within the instrument 3 41 Power Mode Test To test operation of the instru ment in the power measurement mode proceed as follows a Without disturbing measurement parameters used in preceding paragraph adiust the output level of the adjustable power source to 0 dBm and ascertain that the LED displav of the instrument indicates 0 dBm 0 05 dB b Press the MODE PWR key The LED display should indicate 1 00 mW 1 3 c If desired other power levels may be checked in similar fashion To determine the proper power indica tion for a specific dBm input level use the formula log dB 10 mW 3 42 Calibration Test To check the automatic cali bration capability of the instrument proceed as follows a Set the power source
182. nnel 1 measures reflected power and channel 2 measures Incident power The reference con ditions are established with a short at the test port of the directional coupler A 29 Use of Hold Measurement Q Trigger T and Measurement Complete SRQ V Commands An example of the use of these commands using an HP85 Controller Boonton Electronics Model 1020 Signal Generator and Model 4200 RF Microwattmeter follows Statement 10 TOVCHK 20 REMOTE 7 8 CLEAR 30 OUTPUT 705 1N1SODOROQOVAB 40 OUTPUT 702 1410100147 50 OUTPUT 703 10 60 OUTPUT 702 OL 10 70 ENTER 703 A 80 PRINT A 90 DISPLAY PRESS CONTINUE FOR T COMMAND 100 PAUSE amp BEEP 110 OUTPUT 703 T 120 ENTER 703 A 150 PRINT A 140 OUTPUT 703 150 DISP PRESS CONTINUE FOR IV COMMAND 200 PAUSE BEEP 210 OUTPUT 702 Comment Program name Enable remote clear display Set Model 4200 chan nel 1 sensor 1 0 CAL FACTOR dB 0 REFER ENCE d8 no hold indication no measurement comp ete SRQ autorange mode dB display mode Set Model 1020 1 MHz output level of 0 dBm output on Set Model 4200 to hold Indication mode Set Model 1020 to 10 dBm level Read mode 4200 store Print model 4200 Indication Display prompt on Model 85 Stop program Issue beep press continue Send trigger mand to Model 4200 Read model 4200 Indication store In
183. nning signature analysis tests before proceeding with programmed tests 5 23 Use the following general procedure for cach of the specified programmed signature analysis tests NOTE A Boonton Electronics diagnostic PROM is required for the programmed signature analysis tests The diagnostic PROM is part of the 961004 Test Kit a Turn off input power to the instrument b Remove ROM IC6 and from its socket on the control board and remove ROMs C6 and from its socket on the interface board if option Ol is installed Sec Figure 7 5 and A 2 c Install the diagnostic PROM in place of ROM IC6 observing pin I orientation 5 3 Section V Maintenance CONTROL BOARD INTERFACE INTERFACE BIT SWITCH ADDRESS BUS CONNECTOR BIT SWITCH shtiret is gom A INTERFACE BOARD IS INSTALLED IEEE 488 INTERFACE BOARD 0 0 Figure 5 Location of Major Assemblies Sheet of 2 5 4 R5 5 2V ADJ TP1 5 TP3 TP6 R11 COMPARATOR VOLTAGE ADJ TP2 TP4 R55 RECORDER ADJ 1 R11 A D ADJUSTMENTS Figure 5 Location of Major Assemblies Sheet 2 of 2 i I 1 i n 1 1 l i t X i i Section V Maintenance R45 OFFSET ADJ R44 FACTORY ADJ TP8 R36 OFFSET ADJ TP7 R5 CHOPPER ADJ R4 CHOPPER ADJ 9 5 pirog indu z g Ped 1 pue
184. ntain the hold Indication function a 00 command will update the display and negate the hold Indication tion 8 24 SRQ Function Syntax The controller can command the Instrument to pull the SRQ Ine true after each measurement The syntax for this command Js 15 and 2S To command the Instrument not to pull the SRQ line true after each measurement the syntax 15 05 To command the Instrument to pull the SRQ line true after each settled reading the syn tax 15 25 8 25 Measurement Trigger Syntax The Trigger T command Is an addressed command wrt T16 T used to trigger a measurement and Is generally used In conjunction with the Hold Indication function Q Refer to paragraph 8 23 The Instrument Is also responsive to the unaddressed Group Execute Trigger GET command This command 15 asynchronous and may result a slightly 8 6 Sensor Type 4200 6E 4200 7E 4200 8E d8m lt 20 d8m 4 10 dBm dBm lt 10 dBm 4 0 dBm dBm lt 0 dBm dBm lt 10 dBm dBm dBm faster response time than the command which Is executed only once each measurement cycle 8 26 Limit Service Request This command when enabled will result In a service request by the Instrument when elther dB Limit high or low of either channel channel 1 or channel 2 Is exceeded limit exceeded and the channel can be deter mined from the service request byte as shown below NOTE Bit 6 when set Is the serv
185. odel 4200 system nput Leve Power UN tions B C and D These uncertainties may also be added in an RSS fashion which repre sents the most probable total uncertainty RSS A C D When operated a dual channel instrument option 03 total uncertainties of A must be multi plied by a factor of two 171 gt e a 4 It lool x x gt 10 wW 20 dBm at 22 GHz 10 wW 20 dBm at 33 GHz 10 wW 20 dBm at 13 rdg 40 GHz 10 nW to 10 mW at 6 rdg 0 25 40 GHz to 60 GHz 10 nW to 10 mW at 0 25 50 GHz to 75 GHz 10 nW to 10 mW at 6 rdg 0 25 75 GHz to 110 GHz WRD180 10 nW to 10 mW at 6 rdg 0 25 18 GHzto 40 GHz 40 01 dB 10 dBm relative to 20 dBm nnn Series 7 UNCERTAINTY IN dB 1 4 Section I Introduction TABLE 1 1 PERFORMANCE SPECIFICATIONS Cont Specifications B Temperature Uncertainty at 1 MHz Uncertainty Temperature Instrument Sensors 21 C to 25 C reference 0 0 dB 0 0 dB 18 C to 30 C 0 0 dB 2 32 0 1 dB 10 C to 40 C 4 7 20 2 dB 14 706 20 2 dB 0 C to 55 C 5 0 25 dB C Calibration Factor Uncertainity Coaxial Sensor Calibration Factor Uncertainty Sensor Frequency GHz 19 48 51011 13 30 30 35 35 35 35 40 40 40 45 45 RSS 13
186. on and calibration of both full scale and down scale indica tions Power Ranges Down Scale Output Power Accuracy Temperature Influence Harmonic Distortion Output Frequency 1 MHz 50 ohms 10 5 Output Impedance Temperature Dimensions Weight PERFORMANCE SPECIFICATIONS Parameter Specifications Full Scale 60 50 40 30 20 10 0 10 20 dBm 0 to 9 dB in 1 dB steps 0 05 dB at 25 C 5 C for 90 days 15 minute warm up 0 001 dB C from O to 50 C lt 0 15 total harmonic distortion crystal controlled Operating 0 to 50 C Input Power 100 120 200 240 vac 10 50 to 400 Hz 7 VA 5 2 high without feet 8 3 wide 11 5 deep 7 75 lbs 3 6 kg TRACEABILITY The Model 25A is factory calibrated using instrumentation whose accuracy is traceable to the National Bureau of Standards Periodic calibra tion of 0 dBm and 9 dBm outputs is accomplished using thermal transfer techniques The accuracy of other full scale and down scale ranges is deter mined by precision attenuators which are tested at the factory and should not require periodic calibration 20 to 75 C Non operating BOONTON BOONTON ELECTRONICS CORPORATION BOONTON ELECTRONICS CORPORATION 791 ROUTE 10 RANDOLPH NJ 07869 201 584 1077 TWX 710 986 8215 FAX 201 584 3037
187. onnect the power sensor cable to elther the front panel or rear panel Input channel 1 connector as desired and affix the shield supplied with the option to the unused connector Then proceed wlth operation as described In Section 11 of the 4200 manual NOTE Do not attempt to use both Input connectors at the same time use only one and make sure that the shield 15 affixed to the other APPENDIX E OPTION 4200 06 APPENDIX E INTERNAL TMA MATE OPTION 4200 06 1 DESCRIPTION 2 4200 06 option provides 1 488 programming syntax whlch conforms to MATE System Control Interface Standard The tocol Is the CIIL subset of the ATLAS control language 5 The 4200 06 option cons sts of the Items sted In Table 1 4 CONFIGURATION 5 The 4200 06 option allows two modes of operation selected by BIt Switch 8 of the Interface Board Bit Switch as Isted Table 2 6 MATE nat ve mode selection Is made during power on Inltlallzatlon To change mode the Instrument must be turned off before Switch 8 15 changed When power Is re applled the new mode will be In effect 7 When the 4200 06 powers up In the MATE compatible mode the active channel 15 set to the following cond tions dBm Mode b Autorange Mode High dB Limit 99 99 d Low dB Limit 99 99 e Raw data flag cleared 8 While the 4200 06 15 In 488 LOCAL mod
188. or also per forms automatic instrument zeroing and calibration The processed digital signal which defines the final measure ment value is applied to a data bus and to the display module 4 8 Display Module The display module contains the kevboard and LED display circuits Parameters to be used for power measurements can be entered at any time through the keyboard Keyed in values are read and stored by the microprocessor and selected numerical values are shown on the LED display during parameter selection Computed power levels are processed bv the microprocessor in accordance with the keyed in para meters the digital values representing the final computed measurement values are decoded by the display module circuits to produce a direct LED readout of measured values and to activate the appropriate annunciators 4 9 Power Reference The power reference module generates a precision 1 00 mW 50 MHz signal that is used for calibration of the instrument When this signal is applied to the sensor and the front panel CAL key is pressed fine sensitivity adjustments of the instrument are performed automatically under microprocessor control 4 10 Power Supply Module The power supplv module provides all DC voltages required for operation of the internal circuits It also provides a reset signal to the control module when it is powered up and an interrupt signal if an undervoltage condition is detected The standard power supply module c
189. output In the data string Paragraph 8 21 The table below relates Interna and apparent range codes LEVEL INTERNAL APPARENT 10 dB 10 6 6 dB 3 98 m4 48 1 mW 6 5 10 100 uw 5 11dB 79 4 uM 4 20 48 10 4 2148 7 94 UW 3 30 dB 1 uw 3 32 dB 631 2 40 dB 100 nw 2 42 dB 63 1 nW z 1 50 d8 10 10 52 dB 6 51 60 dB 1 nw 9 For the series 4 and 5 sensors add 10 dB to internal and apparent levels For the series 6 sensor add 20 dB to the internal and apparent levels Bus Availability When the Model 4200 Is sent a string It does not normally tie up the bus while responding to the string other bus communications are possible during the Interval The 4200 can Inform the controller when it is finished by use of the Service Request see paragrpah 8 12d if this Is desired The Model 4200 can however be made to lock up the bus whlle It is responding to a string if such action 15 desired by sending it two strings in succession even If the second string Is only a Null command Example zero command wrt 716 42 Followed by a talk command red 716 8 8 13 TIME RESPONSE CHART Refer to Tables 1 5 for the Model 4200 sensor measurement through the 488 Bus 8 14 REMOTE PROGRAMMING NOTE It Is assumed that the user is acquainted with GPIB principles and terminology Refer to the controller Instruction manual
190. pF 10 500 33883 JF CAP MICA 100pF 5x 300 20307 0185 00 EL 10uF 20 25 421 5 25 10 CAP VAR CER 3 5 18 250 91293 9573 1000 10 600 16546 102 EL 10uF 20 25 421 5 25 8 10 CAP CER 0 0147 100 33883 250 CAP MICA 3 6pF 5 300 14655 55550 MICA 200 5 100 14655 CDSFA201J CAP MICA 10 5 300 14555 CDSUCC100J YAR CER 3 5 18 250 91293 9373 DIOOE HSCH1001 lt 1 62632 29480 HSCH 1001 DIODE 1550 04713 1650 0581 YOLT REF 1640 ADSS1JH INDUCTOR 4 7uH 10 24226 107471 INDUCTOR 0 56uH 104 24226 10 7560 INDUCTOR 0 0S3SuH 102 04901 4005850060 TRANS NPN 2N39 04 04713 2N3904 RES MF 1 50K 14 174 19701 5043 1 500 RES MF 100K 12 174 19701 50955 1000 RES VAR 1K 10 0 54 32997 3299 1 102 RES MF 100K JZ 1 44 19701 59045501 00K OF RES 2 43K 1 1 44 19701 550 2431 RES MF 1 00K 1 174W 1970 S5043SEDIK000F RES MF 10 0K 10 1 40 19701 5043 010 00 RES MF 5 11 12 174 19701 SO4SEDSK110F RES MF 1 21K 17 174U 19201 SO43EDIK210F RES MF 1 30K 1 1 44 19201 0455013006 RES MF 75 0 OHM 14 140 19701 5043 75 00 RES MF 0 OHM 0 1 1 44 64537 PMESS TO RIS 04223100C MODEL 4200 REFERENCE DESIGNATOR DESCRIPTION 0 REV 0 CG PUR POWER SUPPLY MANUFACTURER PART NUMBER m xe o 5 cA nA ca ce M o ce c
191. placement 5 28 Instrument Adjustments ht 5 29 General chee Wee NODE EE ea arie arte le Dal e E age a UE MONS Feed e en 5 30 Power Supply Adjustments 5 31 Input Module Adjustments 22 32 DC Calibration S aa ON eie 5 33 AC Calibrati n cS eu Ern Rue cc 5 34 Display Board Recorder Output Adjustment sce Sao sah eue eru m wu 5 35 Power Reference Adjustment 5 36 Entry of Sensor Calibration Factors Versus Frequency u uh eee uu RAUS 5 37 Sensor Calibration o dre tg a e e abe a iy CREDE e USE RR EI 5 38 General usa sy t SS upa ae de ae BRS e PICS 5 39 Bit Switch Setting for Additional Sensor 5 40 Calibration of Model 4200 4C Sensor 5 41 Calibration Notes Model 4200 6 Sensor 30 dBm Range Page 3 14 3 14 3 14 3 14 Page 4 1 SECTION PARTS LIST Paragraph Page Table af Replaceable Paitsi o snoa s W ua Se MERE um mA PEE SD EAE 6 1 SECTION VII SCHEMATIC DIAGRAMS Paragraph Page Scheinatic DIgraims s vue sed EX RI ER 7 1 APPEND
192. r supply connector P4 as determined by address bits A0 and Al are supplied through interface IC16 to the data bus If interface on the input printed circuit board is enabled data generated on the input printed circuit board are transmitted over the data bus through interface 4 31 To store data the CPU activates signal WR and the address lines that define the storage device and storage location Decoder 4 decodes three address bits to enable signal CS at RAM IC8 signal WR enables the write func tion of RAM IC8 through inverter ICId and gate IC9b and data on the data bus are written into memory at the location defined by the remaining address lines To output data to circuits outside the control printed circuit board signal is activated by the CPU in addition to the previously mentioned signals Signals IORQ and WR acti vate the write enable signal to the device defined by the address bits Decoder 4 decodes three address bits to select the appropriate device interface IC16 interface 1C18 or interface on the input printed circuit board Data on the data bus are then transferred to the selected device If interface 1C16 is selected these data are trans ferred through interface 6 to connector P3 or J3 as determined by address bits 0 and Al The output to connector P3 consists of dB out of limit signals and an input disconnect signal which is active when the automatic zeroing function is
193. rate states whether In local or remote control One state 15 the measurement state during which the Instru ment performs and displays measurements the other state is the data entry recall state which 15 operative during number entry or after recall of stored Information When operating on the bus It Js important to remember that the instrument can send only that Information which appears on the front panel display When the instrument is in the store or recall mode the LED display and annunciators blink on and off to indicate that the displayed value 1s not a measured value Measurement Mode Functions following functions change the measurement mode of the instrument Keyname GPIB Function PWR MODE Displays measured vol tage dB MODE B Displays measured d8mV b Command Functions Table A 3 describes command functions Keyname GPIB Function dB CAL 0 Cal Factor Constant 1n dB RANGE AUTO Sets autorange mode RANGE HOLD 0 Sets range hold mode GHz F Interpolates Freq Cal Factor Table APPENDIX 4200 01 TABLE A 3 COMMAND FUNCTIONS Command Arm Arm 10 Hoid command the ast reading or the last keyboard entry wili remain on the display The instrument will continue to read probe In put but will not update the display The instrument cycle time wiil be greatly reduced because of the measurement cycle overhead that is not executed during the hold command 1
194. rated circuit 1C8 This voltage should be approximately 3 volts i Reassemble the shields on the control printed circuit board and install the control printed circuit board in the instrument 5 28 INSTRUMENT ADJUSTMENTS 5 29 General Adjustment procedures are provided for the chopper input display power supply and power refer ence boards The control board requires no adjustments For the locations of test points and adjustment controls refer to the applicable diagrams in Section VII 5 30 Power Supply Adjustments With all power connec tors in place the instrument controls set for proper line operation and with line voltage applied make power supply adjustments as follows a Connect the digital voltmeter between TP3 and common Note the voltage indication it should be 5 20 0 002 Vdc Adjust RS as required to obtain the specified voltage POSITIVE LEAD j b Connect the digital voltmeter between HI lead to TP2 and LO lead to TP4 Note the voltage indication it should be 150 mV 10 mV Adjust RII for an indication of 150 mV The polarity of the reading will depend on how the test probes are connected to the circuit c Connect the digital voltmeter between and common The voltage should be I5Vdc 20 6 Vdc d Connect the digital voltmeter between TP5 and common The voltage should be 15Vdc 0 6Vdc e Connect the digital voltmeter between TP6 and common The voltage should be 5Vdc 0 2 Vd
195. rem OOTTEO RANGE 3 4 5 6 800 5 TO TO TO PIN 13 1C8b PINI2 PINIS PINI9 PINZO 15 6 e R37 3 9K 330 F i R38 9 R36 a A 8 15 15 10K 0 INH 1 54 9 23 M R25 R27 Rie s 33pF R39 33 1M 100K 7 80 6 14 Ji Vss 165 42 CONNECTS TO 6 CO40518E INH 9 1 14 cie 2 c20 a 68 R32 2 R40 CD40518E ON FRAME TS C a ouT in P AT 9 0 94 Sie 806 15 SHT I OFT 10 16 3 7 2 13564 40 b 87 R33 t 1 CONNECTS TO sey EN 2 10K 4 8 Lu A4PI PIN2O TO 4 909K 835 4 ON OPTION FRAME 515 SCHEMATIC PINI9 To V 5 18 831099 c22 6 PIN IB o 9 1 ss CTRL vee Yoo NOK 54 9Ke CTRL 5 4 040168 5 5 2v 4 Mi 1 7 2 15V 5 2 15 C040168E tov md T 7774 0 01 5 ci2 14 cu A TO PIN i8 70 IC Tb PIN IZ CIT 2 3 213 BP To um cmd co40si8E C TO PIN20 INH 7 ASTASLE CTRL E SS ASTABLE Yoo DUT IN TRIGGER 6 3 1C9d R49 2R50 RSI R52 47K 47K 47K 47K 165 5 2 2 21 CD4047AE C04013BE TO CIO PIN 13 5 CONNECTS TO 3 Q 16 521 21 R COMMON ON FRAME SCHEMA
196. ring the zeroing period will be Upon completion of zeroing the display will be 03 g Connect the sensor to the POWER REF connector The LED display should indicate approximately 00 00 dBm assuming that a 50 ohm sensor is used If it does press the CAL key h Keyin 2 CAL FACTOR dB through the keyboard The LED display should change to approximately 00 20 dBm 1 0 CAL FACTOR dB through the keyboard The LED display should return to approximately 00 00 dBm j Key in CHS REF LEVEL dB through the board The LED display should indicate approximately 01 00 dBr k REFLEVEL dB through the keyboard The LED display should indicate approximately 01 00 dBr 1 S dB LIMITS HI through the keyboard The LIM annunciator should be off Keyin5 CHS dBLIMITS LO through the Keyboard The LIM annunciator should remain off n Key in 5 dB LIMITS HI through the keyboard LIM annunciator should remain off Key in 5 CHS dB LIMITS LO through the keyboard The LIM annunciator should light p 0 REF LEVEL dB through the keyboard The LED display should indicate 00 00 the LIM annunciator should be off and the dBm annunciator should be lighted Press the MODE PWR The LED display should indicate approximately 1 000 mW r Disconnect the sensor from the POWER REF connector 3 11 OPERATING INSTRUCTIONS 3 12 Measurement Parameters a
197. rmal data output will have the following format abcsddddEsd S R tc Where ab mode power In milliwatts Pw dB DM dBr DR channel A 1 2 C 3 s sign or dddd data four digits each digit 0 9 Esd exponent sign digit 5 data delimiter APPENDIX OPTION 4200 018 TABLE 8 4 RANGE CODES FOR VARIOUS SENSORS Range Code 4200 4 4200 5 4 50 dBm lt 40 dBm 4 50 dBm lt 20 dBm lt 10 dBm lt 0 dBm lt 10 dBm B 22 Continued S status digit 0 no error entry too small 2 entry too large 3 measurement under range 4 measurement over range 5 zero acquisition out of range excessive positive offset 6 zero acquisition out of range excessive positive offset 7 channel 3 over under range R Range Code coded per Table 8 4 te termination character 8 25 Hold Indication Function Syntax The Hold Indication function when enabled 10 automatically does a measurement cycle following Its receipt and then holds the Indication untll receipt of a T OQ or another 10 command It Is Intended primarily for use with the Trigger or Group Execute Trigger commands Following Its receipt the Instrument continues to measure but does not update the display This can be use ful where response time 1 important since display update time Is eliminated until called for with a Trigger command another 10 command will also update the display and mal
198. rol One state Is the measurement state during which the Instru ment performs and displays measurements the other state 15 the data entry recall state which 15 operative during number entry or after recall of stored information When operating on the bus It 15 Important to remember that the Instrument can send only that information which appears on the front panel display When the Instrument Js In the store or recall mode the LED display and annunciators blink on and off to indicate that displayed value is not a measured value Measurement Mode Functions following functions change the measurement mode of the instrument Keyname GPIB Function PWR MODE P Displays measured voltage dB MODE 8 Displays measured dBmV b Command Functions command functions Table 8 3 deserjbes Keyname GPIB Function dB CAL FAC Cal Factor Constant RANGE AUTO A Sets autorange mode RANGE HOLD 0 Sets range hold mode 38 Commana 8 12 Continued b Command Functions Continued Keyname GP18 Function Interpolates Freq Cal Factor Table GHz F SEL AVERAGE 0 Sets auto average nX Sets select average n 1 127 Service Request Status Codes Service request status Is defined by a five bIit code as defined in Table 8 4 TABLE 4 SERVICE REQUEST STATUS CH 1 low t Im t exceeding Ch 1 high timit exceeding Ch 2 low timit exceed
199. rovide 1 V full scale output 2 Extending the RMS measuring range of sensors note The true RMS detection area of the 4200 4 5 21 sensor 15 from 60 dBm to 20 dBm and 40 dBm to O dBm for the 4200 6 sensor These ranges may be extended by adding attenuation to the sensor Input For each dB of attenuation added the RMS range willl shift upwards by 1 dB The low end sensitivity will also rise by 1 dB By adding the 20 dB attenuator 951054 2 supplled In the 4200 5 21 Test Set the RMS ranges wil be changed to 40 to O dBm for the 4200 4 5 21 and 20 to 20 dBm for the 4200 6 b To correct the display for the attenuator use enter the attenuation value for the frequency of Interest from the calibration data sheet supplied with the attenuator and then press the REF LEVEL dB key For example If the attenuation value at 16 GHz Is 19 85 dB as read from Calibration Data Sheet press 1 9 8 5 CHS and then press the REF LEVEL dB key d This technique wlll work with any attenuator for which absolute attenuation values across the frequency range are known Attenuators are not callbrated with specific sensors and not required to be matched as pairs 3 On Page 1 8 Table 1 2 change the 4200 4 5 21 MAX SWR spelclfications to 1 4 from 4 GHz to 18 GHz 4 On Page 2 2 paragraph 2 75 replace the following text and table Recorder Output Recorder connector J20 type BNC on the rear panel provi d
200. s generated if the channel addressed does not exist 41 The 488 bus command DCL Device Clear will perform a RESET on the currently active channel E 42 In addition to syntax errors the following messages may be generated No error lt 50 gt lt gt lt 1 gt b Improper channel command DEV ILLEGAL CHANNEL PROGRAMMED WERME i cr If 45 SELF TEST Two self test commands are recognized by the 4200 but the same internal test is done for both test is check sum verification of the 4200 program memory The command syntax is CNF lt er gt lt If gt or 15 lt gt lt 1 gt 44 Each of these commands also does an implied RESET returning the 4200 to not SETUP status and clearing any pending errors prior to self test E 45 addition to syntax errors the following messages may be generated a No error lt 5 gt lt gt lt 1 gt b Checksum error CNF command FO7PWMOn DEV CONFIDENCE TEST FAILURE lt gt lt 1 gt Checksum error IST command FO7PWMOn DEV BIT TEST FAILURE RAM ROM lt cr gt lt f gt 46 STATUS COMMAND Messages in the out put buffer must be enabled prior to being sent to the controller Except after an or FTH command which implicitly enable the output buffer the STA command must be sent to access the current message When the STA command is received by the 4200 the no error message
201. s the LED display returns error messages as follows Display Condition 01 lllegal entrv too low cc02 Illegal entry too high 03 Signal level of range low cc04 Signal level out of range high cc05 Zero acquisition out of range excessive nega tive offset hardware malfunction cc06 Zero acquisition out of range excessive positive offset input too large 07 Signal level of range one channel high one channel low in channel 3 mode of operation 3 5 MEASUREMENTS 3 26 Making Power Measurements Once the instru ment has been programmed calibrated and zeroed it is ready for power level measurements Merely connect the sensor to the source whose power level is to be measured The power level will be displayed directly on the LED display 3 27 Low Level Measurements The instrument will provide reliable reproducible measurements of CW AM and FM power levels as low as nW 60 dBm It can also be used for pulse measurements but with slightly decreased accuracy dB Peak power levels for pulse measurements should not exceed 200 uW 20 uW for Series 4200 4 sen sors above this level the sensor enters the region where it operates out of the square law region and accuracy at such signal levels is correct for CW and FM only 3 28 High Level Measurements Zeroing of the instru ment is not critical when making high level measurements 10 LW to W CW and FM power measurements can be obtaine
202. s Versus quency Proceed as folows NOTE The 4200 is capable of storing twenty calibration factors 0 through 19 for euch sensor from to 8 programmed into the instrument Frequencies must be in ascending order starting with the lowest and 5 25 Section V Maintenance advancing in sequence to the highest If less than twenty calibration factors are to be entered enter the calibration factors available then fill the remaining positions with the highest frequency and associated calibration factor a Using the keyboard keys select the sensor for which calibration factors are to be entered For example if the calibration factors to be entered are for sensor 4 press the 4 and SELECT SENS keys b To confirm correct sensor selection press the SELECT SENS key The number of the selected sensor will appear on the instrument LED display c Set the control board bit switch to CALIBRATE MODE 2 Refer to Figure 5 3 d Using the keyboard keys enter the calibration factor position number 0 through 19 followed by the RANGE AUTO key For example to enter a frequency and calibration factor into position 0 press the 0 key followed by the RANGE AUTO key e Using the keyboard keys enter the frequency to which the sensor calibration factor to be entered applies For example if the sensor calibration factor to be entered applies to a frequency of 0 1 GHz press the 0 and 1 numeric key then press the CAL FACTOR
203. sed with the instrument The lowest usable frequency for calibrated measurements is 0 2 MHz the highest frequency is 110 GHz 4 3 The instrument is completely solid state unit that employs a microprocessor for versatility in use The microprocessor is controlled by a permanently stored internal program pertinent operating parameters can be entered by means of a front panel kevboard Use of a microprocessor enables automation of numerous func tions such as zeroing calibration sensor calibration range selection unit conversion dB limit testing relative dB measurements etc Measured values are displayed directly on a 4 digit LED display in terms of nW uW mW dBm dBr relative dB Annunciators associated with the display indicate the unit of measurement A meter is also provided for relative power measurements this feature simplifies such operations as nulling and peaking 44 OVERALL BLOCK DIAGRAM See Figure 4 1 4 5 Sensor Power levels to be measured are applied to an external sensor which is connected to a front panel connector through a five foot sensor cable Input power appears across a precision resistor 50 or 75 ohms depending upon the sensor model Because the resistance value is constant the voltage developed across the resistor is a function of input power E PR The RF voltage developed across the resistor is converted to a DC voltage and the resulting DC voltage is applied to the input module
204. selected The output data at connector J3 are used in signature analysis checks If interface 1C18 is selected the data on the data bus are written into storage interface 1C18 for application to the display printed circuit board These data are then clocked out of storage to acti vate the LED display and annunciators on the display printed circuit board If interface on the input printed circuit board is selected data on the data bus are trans ferred through the interface to control various functions on the input printed circuit board 4 32 Connector is included in the data bus on the control printed circuit board to facilitate signature analysis maintenance of the microprocessor circuits When connector Jl is pulled out the data bus is disconnected from the CPU and the CPU executes successive NOPs for free running signature analysis checks 4 33 The CPU receives two control signals directly from the power supply printed circuit board Ifthe power supply voltage should drop during operation or on equipment turn off signal is activated by the power supply circuits the CPU upon receipt of this signal Section IV Theory of Operation activates signal and halts further execution of the program Signal HALT is applied to the power supply printed circuit board where it latches signal RESET to the active state Signal RESET in turn causes the microprocessor to return to the starting point of the program
205. sistance for Models 4200 4A 4200 4B 4200 4E 4200 5B 4200 SE and 4200 6E and 75 ohm effective total resistance for Model 4200 4 across which the input power is applied With a constant load resistance the RF voltage developed across the load resist ance is a function of the RF power E2 PR The RF voltage is rectified by a full wave rectifier that permits mea surement of highly asymmetrical waveforms without sub 4 2 stantial error When the applied power level is within the square law region of the diodes up to approximately 20 uW the sensor has a true RMS response Above this power level the sensor response approaches peak to peak cali brated in the instrument in terms of true average power NOTE Series 4200 5 and 4200 6 sensors have input attenua tors this permits measurements to 100 mW 20 dB and 1000 mW 30 dB respectively 4 14 The body of the sensor has been designed and fabricated very carefully to eliminate any cavity resonance effects within the calibrated frequency range and to minimize noise The sensor diodes are specially selected for this application The DC output voltage of the sensor is applied to the input connector of the instrument through a low noise sensor cable 415 DETAILED THEORY OF OPERATION INPUT P C BOARD CIRCUITS See Figure 4 3 4 16 The input printed circuit board receives from the sensor a DC voltage that is a function of the power level being measured Under control of
206. splay in the third column of the table Ideally the values listed in the third column will equal those listed in the second column plus the exact Section V Maintenance attenuation value of the 10 dB attenuator If the values listed in the third column are within 0 02 of the values listed in the second column plus the exact value of the 10 dB attenuator no adjustment on this range is needed If read justment is desired proceed to paragraph 5 44 NOTE At the higher output level the output will be distorted however this does not matter since the same distortion exists in both determinations second and third columns 5 43 In the 30 dBm range adjustment procedure that fol lows it is assumed that the 4200 6 sensor has been pre viously calibrated with the instrument The adjustment value is stored in REF LEVEL dB this value will be in the vicinity of 5000 If the 4200 6 sensor has not been cali brated with the instrument 5000 should be stored initially and adjusted as necessary Use the following procedure Set the Model 25A output to 7 dBm b Set the control board bit switch Figure 5 3 to CALIBRATE MODE 2 switch No 2open c Press the instrument REF LEVEL dB key The dis play will indicate a number in the vicinity of 5000 d If the 4200 6 sensor has not been calibrated previ ously enter 5000 as the initial value bv pressing the 5 0 0 0 and REF LEVEL dB keys Repeat the procedures of paragraphs 5
207. ss This address Is set using the five right most sections of rear panel address switch 51 accordance with Table 8 1 8 10 Message Terminator Positions 6 and 7 of the rear panel switch 51 permit a choice of message terminators as shown Table 2 B 11 Command Response in addition to Talk and Listen Address commands the Instrument responds to the following a Address Commands Response If Listen Addressed Mnemonic Name Function GTL Go To Locat Enables panel contro GET Group Execute Trigger a Trigger measurement b Listen Address Group Mnemonic Name Function UNL 1 isten De address as listener Talk Address Group Mnemonic Name Function UNT Untatk De address as talker APPENDIX 0 4200 018 TABLE B 1 ADDRESS ASSIGNMENT Decima Talk Listen Switch Setting Address Code Code 5 4 3 2 O O O O O O O O O O O O O O O O O O O 24 X 8 25 Y 9 1 address 31 11111 will not be recognized and should not be used 8 2 11 Continued 4 Unencoded Commands Mnemonic Name Interface Clear REN Remote Enable B 12 Operating States TABLE 8 2 MESSAGE TERMINATOR SELECTION Terminator with or without EOI Message Function Initialize interface Permits remote operation The instrument operates in two separate states whether Jn local or remote cont
208. ssor data are trans ferred from the input printed circuit board to the micropro cessor provided that signal CS to interface is also active when signals WR and CS are both activated by the microprocessor data are transferred from the micropro cessor to the input printed circuit board Data flow between the input printed circuit board and the microprocessor over the eight line bi directional data bus Routing of data through the interface is controlled by the address signals supplied to the interface by the microprocessor 4 26 DETAILED THEORY OF OPERATION CONTROL P C BOARD See Figure 4 4 4 27 The operation of the instrument is controlled by a microprocessor contained on the control printed circuit board The control printed circuit board is organized around a central processing unit CPU associated memories input output ports and a 40 line bus A stored program in conjunction with key entered commands enables the microprocessor to perform a variety of functions including the following Analog to digital conversion Zero determination Zero correction Ranging Calibration Signal processing Binarv to BCD conversion dB conversion dB reference conversion dB limit testing Diagnostics Ter ro manag 4 28 Integrated circuit IC3is the microprocessor CPU It is an 8 bit unit that operates ata clock frequency of 2 MHz generated by integrated circuits Cla through Cle and associated circuitr
209. t d Measurement not INITIATED FO7PWMOn MOD MEASUREMENT NOT INITIAT lt gt lt gt Measurement did not settle FOSPWMOn DEV MEASUREMENT TIMEOUT lt cr gt lt Tf gt f Measurement exceeded maximum llmit FOOPWMOn DEV MEASURED POWER GREATER THAN AXIMUM cr It ge Measurement less than minimum limit FOTPWMOn DEV MEASURED POWER LESS THAN INIMUM cr I f gt Notes s exponent sign E 35 DISCONNECT 4200 may be logically disconnected from the test system by the com mand OPN CHn cr I f gt E 36 channel Identification must agree with the currently active channel otherwise an illegal channel error will be generated The channel must have been SETUP prior to Issuing this command 37 After execution of the OPN command it Is necessary to send the CLS command prior to INX and FTH commands APPENDIX OPTION 4200 06 E 38 addition to syntax errors the following messages may be generated No error lt sp gt lt cr gt lt f gt b Improper channel command 0070470 DEV ILLEGAL CHANNEL PROGRAMMED WERM lt cr gt lt i f gt Instrument not SETUP FO7PwMOn MOD POWERMETER NOT SETUP lt cr gt lt f gt 59 RESET The RESET command addresses specific channel clears any pending error mess ages and sets the 4200 to not SETUP sta tus The syntax is RST ACS POWR CHn cr If 40 An illegal channel error message i
210. t voltage of integrated circuit A9 is usually unipolar and positive however during the automatic zeroing process of the instrument the DC output voltage mav be positive or negative depending upon small DC offsets Because some of the following circuits operate only with unipolar signals a polarity switch is required This polarity switch which consists of solid state switches IC3b and IC3c operates under control of the microprocessor on the control printed circuit board which tests for polaritv DC voltage is routed through the polarity switch to the appropriate input of operational amplifier A3 so that the output DC fromthis amplifier is always negative This output voltage is applied to a comparator circuit 4 23 Comparator A2 operates in conjunction with the microprocessor on the control printed circuit board and D A converter IC2 to convert the DC output signal of amplifier which is proportional to the input power to a digital signal that can be processed by the micro processor circuits D A converter IC is supplied with successive half level digital signals full scale 2 full scale 4 etc by the microprocessor D A converter 2 converts these digital signals to a DC analog voltage and this analog DC voltage is applied through amplifier Alto comparator 2 where it is compared with the DC signal from amplifier A3 The difference signal from compara tor A2 is supplied to the microprocessor through interface
211. tain that the LIM annunciator 15 off e Set the output level of the adjustable power source to 2 0dBm The LIM annunciator should light The logic level at pin 5 of rear panel connector P3 should be high the logic level at pin 4 of connector P3 should be low f Set the output level of the adjustable power source to 2 0 dBm The L1M annunciator should be lighted logic level at pin 4 of rear panel connector P3 should be high the logic level at pin 5 of the connector P3 should be low NOTE Limits can be entered only in terms of dB not power however the limit function operates in both the dB mode and the PWR mode g Set theinputlevel to 7 d Bm Press the CLR and the REF LEVEL dB kevs the indication should be approxi mately 7 00 dB Press the decimal point and the REF LEVEL dB keys the display should now indicate 00 00 dBr Recall the dB reference level by pressing the REF LEVEL dB key the indication should be 7 00 showing that the original d Bm level is now stored as the dB reference level Press the CLR and the REF LEVEL dB keys indication now should be 7 00 dBm showing that the reference level is now 0 dBm Note that as discussed paragraph 3 19 page 3 8 this method of entering current dBm level as the dB reference level is operative only in the local mode not in IEEE 488 interface mode 3 46 Calibration Factor Test To check operation the calibration factor function proceed as follows a Set the output lev
212. ters etc Lithium type bat tery which hasan anticipated life of 10 years supplies power to RAM IC8 during power down of the instrument to enable retention of data in memory During normal operation RAM ICS is powered by transistor QI Inte grated circuit ICI6 is an I O port which interfaces with the following a An 8 bit switch used to set the mode of operation number of channels and number of sensors b A test socket J3 used in signature analysis c A plug P3 for output of status information 4 29 The CPU receives and transmits data overan eight line data bus 5 line address bus is used for addressing and a control bus is used for various control functions When the instrument is turned off signal RESET is acti vated by the power supplv circuits and the microprocessor is reset to the start of the operating program when the instrument is next turned on and DC voltages have reached the correct operating levels the RESET signal is deacti vated bv the power supply circuits and the microprocessor begins to execute the stored program Instructions are retrieved from storage by the CPU in accordance with the address code developed at its output Decoder IC4 enables the appropriate PROM 1C6 or and the instruction contained in the memory location defined bv the address on address lines AO through 11 is read transmitted by the CPU over the data bus The CPU then executes this instruction 4
213. the programmable peripheral inter faces form mailbox for data transfer bet ween the Instrument and Interface address control and data buses 37 When the Instrument Is turned on or when the supply voltage goes low the supply voltage supervisor A23U5 keeps the reset line active until the power supply voltage haas reached Its nominal voltage value thereby resetting the CPU A23U7 and clearing the adapter 22316 B 38 instrument address and message ter mination character data that Is preset by bit switch 2351 is supplied to latch A23U15 To read the switch data address bits AB4 AB5 and control signal TORD are activated producing signal SSW and enabllng the latch output The switch data Is then transferred through the latch to the Interface data bus B 39 To read Incoming Interface control signals the CPU activates signals TORD and sets address bit AB4 low Tne Interface control signal port of adapter 23016 Is selected through address bits ABO ABI and AB2 Adapter A23U16 Is enabled through decoder A23U12 Because signal TORD Is active signal TE supplied by the adapter to buffer 25018 15 Inactive and this buffer Is set up for data transfer from the Interface control signal bus to the control signal port of adapter A23U16 Incoming Interface control signals are transferred through buffer A23U18 and adapter A23U16 to the Instrument data bus Clocking of adapter B 10 operations is controlled by the clock si
214. the test socket at the rear ol the board where it is checked with the signature analyzer probe While not completely exhaustive this test will disclose most RAM failures open C closed 5 13 Section Y Maintenance TABLE 5 16 INPUT MODULE CHANNEL 1 0AIO TEST Signature Analyzer Switch Connection Bit Switch Measurement Function Setting Point 123 45 67 8 Item Point Signature Common 5V pin 4 pin 3 ICI pin 2 ICI pin ICI pin 40 pin 39 pin 38 ICI pin 37 This test checks the operation of I O port A of the input module correct signatures depend on proper functioning of both the control board and the input module O open closed Signature analyzer connection points are on the control board measurement points are on input module board TABLE 5 17 INPUT MODULE CHANNEL 1 0 TEST Signature Analyzer Switch Connection Bit Switch Measurement Function Setting Point 123 45 67 8 Item Point Signature Common 5V 18 19 20 21 22 23 24 25 This test checks the operation of 1 0 port of the input module correct signatures depend on proper functioning of boththe control board and the input module Q open closed Signature analyzer connection points the con
215. this fact in mind Avoid choice of dB reference levels that will result in display values that exceed the LED display capacity Keyboard entries beyond the capa bility of the instrument produce error indications 001 or cc02 for entires too small or too large respectively The displayed dBm may also be used as the reference level This is accomplished by first depressing the decimal point key and then the REF LVL dB key The display will indicate 00 00 showing that the pre viously displaved dBin level has now become the REF LEVEL This reference may be recalled pressing the REF LEVEL dB key it can be cleared by depressing the CLR and then the REF LEVEL dB keys Note that this entry method utilizes the current dBm level and would replace any previously entered dB reference level Note also that this procedure of entering the existing dBm level as the dB reference level is nor operative in IEEE 488 bus interface operation Appendix A 3 20 Entry Limits Limits lor entry ol parameter values are us follows CAL FACTOR dB 3 00 to 3 00 b CAL FACTOR GHz 0 0 GHz to 999 GHz sensor dependent with minimum increment of 0 1 GHz REF LEVEL dB 99 99 with minimum incre ment of 0 01 dB d dB LIMITS LO and dB LIMITS 0 to 99 99 with minimum increment of 0 01 dB 3 21 Recall of Entered Values The last entered value for each of the corresponding functions may be recalled for display on the LED displa
216. ting of the LIM annunciator and activation of out of limit signals at rear panel connector P3 a Limitsareentered by keying in the numerical value in dB using the numerical keys and then pressing the dB LIMITS LO or dB LIMITS key as applicable Example To enter a low limit of 31 34 dB Press Display 3 0003 0031 0031 3 031 3 4 31 34 CHS 31 34 dBLIMITS LO b ThedB limits always test against the value displayed If the measurement isindBm 0 REF LEVEL dB the limit is in dBm If any value other than 0 dB is chosen for the reference level the limits operate in dBr relative d B which is the displayed value If it is desired to have the limits operate on dBm when the REF LEVEL is other than 0 dBm the value entered as the REF LEVEL should be subtracted algebraically from the desired dBm limits reverse the sign of the REF LEVEL dB and add algebrai cally to the desired limit in dBm c The dB limit function is always operative in the instrument For all practical purposes it can be cancelled if desired by entering a high limit of 90d Band a low limit of 90 dB 3 18 CAL FACTOR Selection The sensors used with the instrument are frequency sensitive that is with a constant input power level applied their output signal level does not remain constant as the measurement frequency is changed The CAL FACTOR keys provide means for introducing a calibration factor in terms of one or two parameters either the actu
217. tion START Signature STOP 5V 7C88 PC0 6 14 5437 6 15 9 PC2 6 pin 16 1788 PC3 6 pin 17 7 88 This test checks the operation of part of port C of the control board 1 0 port O open closed TABLE 5 10 CONTROL BOARD 4DIO TEST Signature Analyzer Switch Connection Bit Switch Measurement Setting I 2 3 4 5 67 8 Point Function Signature 0000 Common 5 V S8UA COCCCCCO IC16 pin 13 0000 D 4 6 13 C35P This test checks the operation of part of port on the control board 1 port O open closed Line voltage 120 volts Line voltage 90 volts 5 11 Section V Maintenance TABLE 5 11 DISPLAY VISUAL TEST Bit Switch i TM 1234 5678 nstrument Display succession All zeros All ones through all nines All decimal points All left most annunciators All left most 1 annunciators All left most 2 annunciators All right most annunciators and sign Repeat of the above NOTE If this visual check produces satisfactory results there 15 no need to perform the associated signature analysis check O open C z closed TABLE 5 12 CONTROL BOARD DISPLAY TEST Signature Analyzer Switch Connection Bit Switch Measurement Function Setting Point 123 45 67 8 Item Point Signature START STOP CLK
218. to salected Kevname GPIB Function range 0 7 LIMITS L Low limit value in dB These commands must be preceded by an dB LO appropriate argument The argument for Y is the span of ranges to be zerced for example LIMITS H High limit value in dB 26Y specifies zeroing of ranges 2 through 6 dB HI If only one range is to be zeroed the argu ment must begin and end with the same code SELECT N Selects channel number e g 11 to zero only range 1 argu CHNL ment for 15 the range number 0 10 nW to 6 10 nW for 4200 4 sensors to be set From dB REF R dB reference level for dB execution of the Y command to measurement LEVEL dB modes mode the maximum time 15 as follows SENS S Selects Sensor Data Tables APPEND IX OPTION 4200 01A 12 Continued Command Time Command Time 00 2 5 seconds 04 5 8 seconds 01 2 9 seconds 05 4 0 seconds 02 3 5 seconds 06 4 5 seconds 03Y 3 5 seconds The Y command allows no walt time for a sensor to reach a stable zero before actual offset storage occurs NOTE The G command sets the 4200 to an Internal range which may not correspond to the range code output in the data string In Paragraph 8 21 table below relates Internal and apparent range codes LEVEL INTERNAL APPARENT 10 dB 10 mw 6 6 3 98 0 dB 1 6 5 10 d8 100 uw 5 11 dB 79 4 uw 4 20 dB 10 uw 4 21 7 94 uw 3 30 dB 1 uw 3 32 dB 631 2 40 dB 100 nw 2
219. to zeroing occurs The CLS INX and FTH operations described below must still be per formed to accomplish autozeroing 25 CLOSURE After successful SETUP the 4200 must be CLOSED The command syntax Is CLS CHn cr lf 24 channel number must agree wlth the current active channel as set by the FNC command string If It does not an Illegal channel message will be generated 25 In addition to syntax errors the followIng messages may be generated No error lt sp gt lt er gt lt l f b Improper channel command FO7PWMOn DEV ILLEGAL CHANNEL PROGRAMMED 1 lt er gt lt f gt Instrument not SETUP FO7PWMOn MOD POWERMETER NOT SETUP cr If 26 INITIATION Each measurement must be INITIATED before any result be obtalned The command syntax 15 INX lt gt lt 1 f 27 1 no error condition 1s encountered while parsing the above command the 4200 computes the time required to complete the measurement and places the time In the output buffer output buffer 15 enabled and the controller is expected to read this vaiue and use It to determine Its 1 0 tlmeout limit 28 measurement 15 then Initiated During this time the 4200 15 able to accept the follow on FTH command string but wlll not return data until the measurement is complete E 29 special case for INX Is created when the ZERP noun modlfler was used in the FNC command
220. trol board measurement points input module board 5 14 Section V Maintenance TABLE 5 18 INPUT MODULE CHANNEL 1 0CIO TEST Signature Analyzer Switch Connection Bit Switch Measurement Function Setting Point 123 45 67 8 Item Point Signature START STOP CLK Common 5V 14 15 16 17 This test checks the operation of part of I O port C on the input module correct signatures depend on proper operation of both the input module and the control board O open closed Signature analyzer connection points on the control board measurement points are on input module board TABLE 5 19 INPUT MODULE CHANNEL 1 0DIO TEST Signature Analyzer Switch Connection Bit Switch Measurement Function Setting Point 123 45 67 8 Point Signature START STOP CLK Common 0000 5V 23HC or 5 43 OCCOCCCO PBO 513 pin 0000 Q PBO ASJ3 pinl 7 970 This test checks part of I O port of the input module for channel 1 O open closed Signature analyzer connection points and measurement points are on the control board Signature obtained with range calibrator connected to channel input and range calibrator set to zero and 500k or with instrument sensor connected to power REF connector and POWER REF ON switch set to off 2 Signature obtained with range calibrator connected to channel input and range
221. trument accuracy test paragraph 3 40 and the calibration test paragraph 3 42 provide a good indication of satis factory operation of the sensor selection function Entry of an incorrect sensor number will probably result in degradation of basic accuracy Sensor serial numbers be recalled from non volatile memory by keying decimal point followed bv SELECT SENS 3 44 dB Reference Level Function Test To check the dB reference level function of the instrument proceed as follows a Set the output power level of the adjustable power source to 0 dBm b Press the MODE dB key and ascertain that the LED display indicates 0 dBm 0 05 dB c Enter a 10 dB reference level by pressing the follow ing keys 0 CHS REF LEVEL dB d Ascertain that the LED display now indicates 10 dBr 0 05 dB The dBm annunciator should be off and the dBr annunciator should be lighted e Reset the instrument to indicate dBm by pressing the following keys 0 REF LEVEL dB f Ascertain that the LED display again indicates 0 dBm 0 05 dB The dBm annunciator should be lighted and the dBr annunciator should be off 3 45 dB Limit Test To check operation of the dB limit circuits proceed as follows a Set the output level of the adjustable power source to 0 dBm b Enter a 1 dB high limit by pressing the following kevs dB LIMITS c Enter a 1 dB low limit by pressing the following l CHS dB LIMITS LO d Ascer
222. ug under the uppermost right most bInder head screw 6 32 In the front sub panel e Install the channel 2 Input module and secure It to the side frames of the Instru ment with the four screws suppl led f Remove the four corner screws that secure the channel 2 Input module cover and remove the cover Plug the chopper Into the channel 2 Input module seating the chopper firmly h Connect the 40 ribbon cable connector to the front edge connector of the channel 2 Input module 1 Connect the power cable supplied to the power supply position 8 wlth the black lead on the right side as viewed from the bottom of the Instrument and to the Input module rear wlth the black lead on the right NOTE Avold reversal of the two ends of this cable there Is lead transposition Install the channel 2 Input module cover that was removed n step g k Install the slde covers and the bottom Cover removed In steps a and b remove the channel 2 Input module reverse the above procedure 5 OPERATION C 6 When option 4200 03 Is Installed each of the two Input channels may be operated with any of up to eight sensors Channel and sensor data entered through the keyboard are selected as a set that 15 once a channel selection followed by a sensor selection has been made subsequent selection of that chan causes selection of that sensor automati cally Subsequent selection of that sensor throug
223. ure analyzer connection points are on the control board measurement points are on input module board TABLE 5 22 INPUT MODULE CHANNEL 2 1CIO TEST Signature Analyzer Switch Connection Bit Switch Measurement Function Setting Point 12345678 Item Point Signature Common 5V 14 15 16 17 This test checks the operation of part of I O port C of input module 2 Correct signatures depend upon proper operation of both the control board and input module 2 O open C closed Signature analyzer connection points are on the control board measurement points are on input module board 5 16 Section V Maintenance TABLE 5 23 INPUT MODULE CHANNEL 2 IDIO TEST Signature Analyzer Switch Setting Connection Function Point 1 This test checks part of 1 O port C of the channel 2 input module O open C z closed Bit Switch 2 3 4 5 67 8 Item Point Measurement Signature Common 5V A5J3 pin A5J3 pin I Signature analvzer connection points and measurement points are on the control board Signature obtained with range calibrator connected to the channel 2 input and range calibrator set to zero and Rs 500kQ orwithinstrument channel 2 sensor connected to POWER REF connector and POWER REF ON switch set to off Signature obtained with range calibrator connected to the channel 2 input and ran
224. ures in this manual are based on signature analysis techniques 5 9 SIGNATURE ANALYSIS 5 10 A complete discussion of signature analysis is beyond the scope of this manual however a brief discussion will aid in maintenance of the instrument Long complex data streams are present in micro processor bus oriented systems In signature analysis with the system operating at normal speed these data streams are compressed into concise easy to interpret readouts signatures measured at pertinent nodes By choosing or generating appropriate measuring periods or windows these signatures become unique one and only one signature occurs at each node if operation is normal Using signature analysis it is possibleto proceed through the instrument in an orderly fashion until a faulty signature is obtained Generally at this point it is possible to identify one component as the most probable cause of the malfunction TABLE 5 1 TEST EQUIPMENT LIST Model No Digital Multimeter Data Precision 1450 Oscilloscope Hewlett Packard 1740A Power Meter Calibrator Boonton Electronics 25A Signature Analyzer Hewlett Packard 5004A Calibration Data Boonton Electronics Cartridges For use with HP 9825A HP 85B Diagnostic ROM Kit P N 961008 1 P N 961008 2 P N 961003 Boonton Electronics 2500 W amp G EMP 1 Range Calibrator Milliwatt Test Set VOM Simpson 260 or equivalent Mini Circuits ZHL 3A N Connectors General Purpose Amplifier
225. urs TO PINSI Ay 2 ERI en ean ale 3 A ee ae IPT 51 soe 2 ue TO PIN33 A3 Paa His m 5 TO PIN34 A4 5 7 Eee snd TO PIN 35 46 PAg 9 o s IC3 TO 36 6 TO PIN 37 A7 ICle L GND 9 10 11 12 i6 NOTES TO PIN 38 A 35 13 14 15 16 B 1 CAPACITANCE VALUES IN pF 38 Ag 7 3 IFIED 2 9 UNLESS OTHERWISE SPEC x iiv Tm CC EXTERNAL MARKINGS TO PIN S9 A9 RESET sisi 1 3 LAST NUMBERS USED TO PNA 1 18 RII ud INT I Test TO IC3 PIN 18 5 NMI n gt 5 NUMBERS NOT USED TO 24 29 15V 08312990 ICS 0 2 15V RESET TO 8 IC3 PIN 26 M x J2 23 P4 I9 CONNECTS TO CONNECTS TO Al WI7 PI4 23 Aiwi4Ji9 19 ON FRAME URGE T E sas SCHEMATIC CONTROL P C BD 83 HT 6 OF9 D831271C SHT OF9 SHT OF 9 0831271 SHT Sh 6 Figure 7 5 Control Board AS Schematic Diagram Sheet of 2 7 1117 12 Section Schematic Diagrams 5 CONTROL BOARD os 2v 5 2 2 TE R 223 PIS GNO Vcc 9 3 9 og 5 t 191 OS Ss ria ag ee 10 2 Mm ui Mp cote Mim ded eha i NR dm 2s 5 Os 93 3 m 141 ee sso 04 04 4 2415
226. vents the above program are as follows APPENDIX 4200 01 A 29 Continued HP85 Controller Comments RUN The model 4200 will read the generator levei of approxima tely 0 dBm and this will be printed by the model 85B the Model 1020 generator wiil change its level to 10 dBm but the Modei 4200 will not change 1 5 indication since it is In the hold Indication mode program stops at pause and waits for CONTINUE on Modei HP85 CONTINUE This Issues a T trigger com mand to the Model 4200 which now changes to approximately 10 dBm this is printed by the Model 85 CONTINUE This initiates a sequence which the measurement complete SRQ is enabled CONTINUE This initiates a sequence In which the measurement complete SRO has been disabled 50 Model 4200 Device Dependent Statement Summary Refer to Table 5 A 31 Sealed System Operation When sealed system operation selected by the control board bit switch the Instrument will power up In the operate mode but by the usa of the proper GPIB commands this instrument can be placed In the DC or AC modes to allow calibration of the Instrument over the bus without removal from the system rack The GPIB commands are Operate Mode Callbrate 1 DC Cal Bm Calibrate Mode 2 AC Cal 82m A 32 THEORY OF OPERATION A 3535 General Interface board A23 Is a microprocessor dr ven data interface which converts
227. wll be effective until a new SETUP or a RESET occurs E 19 The following messages may be generated while parsing the SETUP command No error lt sp gt lt er gt lt I f gt Unrecognized operand FO7PWMOn MOD ILLEGAL NOUN NOUN zzz cr If out of sequence FO7PWMOn MOD ILLEGAL zzz PROGRAMMED POWERMETER lt cr gt lt if gt _ d Miss ng operand s at end of command FO7PWMOn MOD ILLEGAL SYNTAX PROGRAMMED lt gt lt gt Improper channel command FO7PWMOn DEV ILLEGAL CHANNEL PROGRAMM lt er gt lt if gt f Maximum voltage out of allowable range FO7PWMOn DEV ILLEGAL MAXIMUM PROGRAMMED WERM lt cr gt lt lf gt 0 Minimum voltage out of allowable range FO7PWMOn MOD ILLEGAL MINIMUM PROGRAMMED W lt cr gt lt if gt h Frequency limit out of allowable range FO7PWMOn DEV ILLEGAL FREQUENCY PROGRAMMED lt cr gt lt lf gt Notes lt sp gt n 222 asci space 0 or 1 unrecognized or Illegal operand truncated to 20 char 20 Errors b and d are general syntax errors and may occur during any Improperly constructed command string In the sectlons that follow they will be termed syntax errors and will not be separately shown 21 special form of setup Is used to command the auto zeroing cycle FNC ACS ZERP CHn cr If 22 The measurement cycle which follows becomes a dummy measurement during which au
228. y The operating program for the micro processor is stored in integrated circuits C6 and C7 which are programmable read only memories PROMS RAM IC8 provides temporary storage of data during operation of the instrument t also stores certain mea surement parameters such as sensor data calibration fac Section IV Theory o Operation 7 ts TPIS lu TPS 9 9 CHOPPER 1 9 INPUT DC P C AC AMP POLARITY FROM BOARD as ve SWITCH AMPL A3 PROBE IC3b IC3c C4 13 P O e 3 Says INTERFACE T RANGING 2 RANGING TP3 ATTENUATOR ATTENUATOR ATTENUATOR SWITCH RIT TP2 ASTABLE MULTI VIBRATOR rcs SWITCH 9 i DEMULTIPLEXER 34 18 80 2 D s 02 32 103 3 4 D4 30 5 517758 29 5 1 06 28 07 27 S INTERFACE CONTROL ao 9 P C 9 T 80480 8 ANALOG DC 36 wR 36 SAMPLE ANO 40 DISPLAY 1 TP 3g HQLD P C BOARD 10 5 CONVERTER IC3a VIA CONTROL amp 40 a4 17 162 BOARD Wap TREN 77716 c 6 24 ST 242 i i __4 A MEE sao C831450A Figure 4 3 Input P C Board Detailed Block Diagram 4 5 4 6 Section IV Theory of Operation ut BI DIRECTIONAL DATA BUS 9 8 x 8 8 Dara 805 8 ADORESS BUS 8 2 0 40 42
229. y and to display data recalled from non volatile memory the displav and annun ciators blink on and off during data entry and recall to indicate that displayed values are not measured values e Analog Indications A front panel analog meter pro vides relative power indications for peaking or nulling applications A dc voltage proportional to the measured power level is available at a rear panel connector for appli cation to a recorder or other external device f Pushbutton Measurement Mode Selection A choice of measurement modes isavailable to the operator Indica tions in terms of power or dBm can be selected by pressing the appropriate front panel key switch A dB reference level can be entered through the keyboard and a display mode selected to indicate power levels in dB relative to a dB reference level g Automatic Ranging Autoranging under control of the mieroproeessor eliminates the need for manual ranging Alternately a measurement range can retained for all measurements if desired by selecting the range hold mode Section I Introduction Applications of power levels that exceed the maximum or minimum measurement capability of the instrument or range in the hold mode results inan error indication on the LED display h Automatic Zeroing automatic zeroing circuit eliminates the need for tedious often inaccurate manual zeroing With zero input to the sensor pressing a front panel key switch directs th
230. y by pressing the following Keys dB LIMITS LO SELECT SENS UB LIMITS HI SELECT CHNI CAL FACTOR dB REF LEVEL dR CAL FACTOR GHz 3 7 Section III Operation After any of the above keys are pressed the instrument remains in the recall mode To return to the operating mode press any of the MODE keys or RANGE keys NOTE When the instrument is in the recall mode the LED display and the annunciators will blink on and off 3 22 Zeroing the Instrument For greatest accuracy especially on the most sensitive ranges the instrument must be zeroed Zeroing is accomplished depressing the ZERO key with zero power applied to the sensor The zeroing period is composed of two parts When the ZERO key is depressed a range dependent waiting period occurs first itis followed by the actual zero acquisi tion for each range The purpose of the waiting period is to permit the sensor and the instrument s analog and digital circuits to reach aclear zero state The higher the level of the signal prior to zeroing the longer the waiting period required NOTE When the instrument is first turned on two succes sive zeroing operations should be performed A TTL compatible signal true high marking the begin ning of the zeroing operation is available at Pin 3 of P3 the rear panel If this signal is utilized to remove incoming power to the sensor the waiting period will automatically become range dependent If this TTL sign
231. y is desired high frequency gain corrections must also be entered and stored in the instrument non volatile memory To calibrate the low frequency gain of the instrument proceed as follows MODEL 25 POWER METER CALIBRATOR Section V Maintenance NOTE For 4200 5 and 4200 5 series sensors in crease all the levels indicated below by 10 dBm For 200 6 series sensors increase all levels by 20 dBm Refer to paragraph 5 41 procedure to obtain levels sufficient to cali brate the highest range when using a 4200 6 sensor Refer to paragraph 5 40 for calibrating a 4200 4C sensor a Connect the instrument and test equipment as shown in Figure 5 6 NOTE To calibrate with 4200 5G 4200 7E or 4200 8E sensors the Model 25 must be replaced with an equivalent 50 MHz source b Depress the Model 25A ZERO or 50 MHz source Set the control board bit switch to OPERATE MODE d Press in order the 1 SELECT CHNL number of through 8 as appropriate See Section 5 39 for additional sensors SELECT SENS 0 CAL FACTOR dB 0 and REF LEVEL dB keys sensor e Set the control board bit switch to CALIBRATE MODE f If calibrating a 4200 4A B C E series sensor press in order the 0 CAL FACTOR GHz 1 0 0 0 and CAL FACTOR dB keys 1 calibrating a 4200 6E series sensor press in order the 2 CAL FACTOR GHz I 0 0 0 and CAL FACTOR dB keys If calibrating a 4200 7E sensor press in order the
232. year 0 to 55 C CALIBRATION Front panel key automatically calibrates instrument to power reference ZERO Automatic operated by front panel switch CALIBRATION FACTOR t 3 0 dB 3 0 dB ranges in 0 01 dB steps entered through front panel keys alternately stored calibration factors are interpolated linearly and applied automatically to readings when the frequency is entered through front panel keys Up to 20 individual calibration factors for up to 8 power sensors can be stored in non volatile memory MEASUREMENT TIME Diode sensors typically 0 2 to 0 5 s except 2 6 s below 40 dBm Thermocouple sensors typically 0 5 to 6 s for increasing levels 0 5 to 14 s for decreasing levels RECORDER OUTPUT See Table 1 3 Watt Mode 10 volts full scale proportional to indicated power over each range dB Mode 8 volts equivalent to 0 dBm for all sensors with a sensitivity of 1 volt per 10 dB change over the entire range DISPLAY 4 digit LED 3 1 2 digit display of power 4 digit display of dB with 0 01 dB resolution Auxiliary analog display uncalibrated proportional to recorder output dB LIMITS Entered through front panel in dB onlv operable in both dB and power modes ANNUNCIATORS LED display of mW uW nW dBm or relative dB dBr LED indication of use of channel 1 channel 2 CH2 option 03 and channel 3 CH 3 CH2 dB out of dB limits and condition of GPIB activity LSN REM AND TALK option

BOONTON - emctest.it

Contents

Download Pdf Manuals

Related Search

Related Contents