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EIP Microwave Model 575B & 578B Source Locking

1. 5 1 Source Locking Seti 26 EEA AE a a e de SUE dob Sed ROSES 5 2 Operational Verification Test Procedures 5 3 Band 1 Range And Sensitivity Test 10 Hz 10 MHz 5 3 Band 1 Range And Sensitivity Test 20 MHz To 100 MHz 5 4 Band 2 Range And Sensitivity Test 5 5 Band 3 Range And Sensitivity Test 5 6 Band 3 Amplitude Discrimination Test 5 1 Band 4 Subband 1 Range And Sensitivity Test 578B Option 06 Only 5 8 Operational Test Record i39 9 9 30909 q Po P EO dod t A ah terns 5 9 xi LIST OF ILLUSTRATIONS Figure Page 2 1 Rear Panel Fuse and Voltage Select Locations 2 3 3 1 Front Panel Model 578B 3 1 3 2 Status Display 3 2 3 3 Signal Input Connectors Model 578B 3 3 3 4 Panel 3 3 3 5 Keyboard 3 5 3 6 Frequency Limits 3 21 3 7 Source Locking Setup 3 22 3 8 Eguipment etup for Band 4 Operation Option 06 3 23 5 1 Source Locking Setup 5 3 5 2 Band 1 Range and Sensitivity Test Setup 10 Hz to 10 MHz 5 4 5 3 Band 1 Range and Sensitivity Test Setup 20 MHz to 100 MHz 5 5 5 4 Band 2 Range and Sensitivity Test Setup 5 6 5 5 Band 3 Range and Sensitivity Test Setup 5 6 5 6 Band 3 Amplitude Discrimination Test Setup 5 1 5 7 4 Range and Sensitivity Test Setup Model 578B Option 06 5 8 xli I GENERAL INFORMATION GENERAL INFORMATION
2. or low DATA high DATA High and low limits should be separated by at least 100 MHz GPIB Examples Enter OUTPUT 719 FLP to reset low frequency limit to factory default Enter OUTPUT 719 FHP to reset high frequency limit to factory default DATA MANIPULATION FUNCTIONS FREQUENCY OFFSET Frequency offset function enables the entry of a positive or negative frequency offset to 1 Hz resolution The offset will be incorporated into the frequency measurement after the next gate To Input Frequency Offsets Keyboard Examples FREQ PRESS to display frequency offset last entered Notice flashing annunciator OFFSET PRESS the corresponding number key to select desired offset frequency to 1 Hz resolution MHz GHz PRESS or to terminate the input sequence Notice FRQ OFFSET annunciators solidly lit after terminator key is released FREQ GHz PRESS C 2 to set a frequency offset of 2 GHz OFFSET j GPIB Examples Enter OUTPUT 719 FO2GHZ to select 2 GHz frequency offset Enter OUTPUT 719 FOP to clear frequency offset Elle 575B 578B To Display Stored Offset Keyboard Examples FREQ PRESS to display stored offset OFFSET CLEAR PRESS C to return counter to measurement display mode DISPLAY To Clear Frequency Offsets Keyboard Example FREQ CLEAR FREQ GHz press o or OFFSET DATA OFFSET OFFSET GPIB Example FREO GHz Enter OUT
3. C to select the 1 kHz 100 Hz and 10 Hz digits DAC press 2 to select the 1 MHz 100 kHz and 10 kHz digits DAC PRESS C to turn the DAC off GPIB Examples Enter OUTPUT 719 DC04 to turn on the DAC and select the 1 kHz 100 Hz and 10 Hz digits Enter OUTPUT 719 DCO7 to turn on the DAC and select the 1 MHz 100 kHz and 10 kHz digits Enter OUTPUT 719 DC12 to turn on the DAC and select the 100 GHz 10 GHz and 1 GHz digits Enter OUTPUT 719 DCP to turn off the DAC POWER METER DESCRIPTION The POWER METER keys provide control of the optional Option 02 power meter The power meter option measures the power of signals applied to Band 3 The power is displayed to 0 1 dB resolution simultaneously with frequency to 100 kHz max resolution For AM and FM averaging purposes gate time is controllable in the power meter mode through the resolution function Power gate time mirrors frequency gate time For example in resolution O the frequency gate time is 1 second and the power gate time is 1 second In resolution 1 the frequency gate time is 100 ms and the power gate time is 100 ms Option 02 allows power offsets from 99 9 dB to 99 9 dB with a 0 1 dB resolution and will not degrade the basic performance of the counter KEYBOARD OPERATION Three keys control the power measurement function 3 16 m 3 OPERATION Keyboard Examples on off PRESS C to activate deactivate
4. 1 o to select a 10 GHz phase lock frequency FREQ GPIB Example Enter OUTPUT 719 PL2GHZ to select 2 GHz phase lock frequency To Display Phase Lock Frequency Keyboard Examples LOCK PRESS C to display phase lock frequency to a 1 Hz resolution FREQ CLEAR PRESS C to return counter to measurement display mode DISPLAY To Clear Phase Lock Frequency Keyboard Example LOCK CLEAR LOCK GH Press COGO OO e FREQ DATA FREQ FREQ LOCK GHz 3 12 22210 3 OPERATION NOTE When the counter is attempting to phase lock the information displayed on the front panel is the frequency the counter is attempting to phase lock to During the phase lock process if the RESET LOCAL key is pressed the counter will abort the process and return to regular measurement mode After phase lock frequency is cleared the coarse tune output will return to 5 V and the phase lock output will return to O V GPIB Example Enter OUTPUT 719 PLP to remove phase lock frequency PHASE LOCK The H LOCK key is used in conjunction with the RCL key function to enable the user to phase lock a stored frequency expeditiously See description of RECALL function The front panel displays the frequency the counter is trying to phase lock and the LCK annunciator flashes When the phase lock process is successful the annunciator will be solidly lit if unsuccessful the annunciat
5. Models 575B amp 578B Source Locking CW Microwave Frequency Counters Operation Manual 575B 1419 1822 578B CCN 1518 2021 Manual Assy Part Number 5585047 07 Manual Text Part Number 5580056 07 Printed in USA 575B 578B Warranty Phase Matrix Inc warrants this product to be free from defects in material and workmanship for one year from the date of delivery Damage due to accident abuse or improper signal level is not covered by the warranty Removal defacement or alteration of any serial or inspection label marking or seal may void the warranty Phase Matrix Inc will repair or replace at its option any components of this product which prove to be defective during the warranty period provided the entire unit is returned COLLECT to Phase Matrix Inc or an authorized repair facility Please visit out web site at www phasematrix com for up to date return information In warranty units will be returned freight prepaid out of warranty units will be returned freight COLLECT No other warranty other than above is expressed or implied Certification Phase Matrix Inc certifies this instrument to be in conformance with the specifications noted herein at time of shipment from the factory Phase Matrix Inc further certifies that its calibration measurements are traceable to the National Institute of Standards and Technology NIST Manual Change Information As Phase Matrix Inc continually improves and updates its
6. r up RUE ec d Se ERA 4 6 Da 112511 AM blas a id ds Begs SO ad TTD 4 6 Service REGUESE Adi oes ek ha rug e Tidit e 4 6 DAC ODEUOD a rx dx acd vs owe wat eoe edle da EROS 4 6 Description Of Available Commands 4 6 br APP rrr 4 6 BAG A DOTT 4 6 pura Shee ara a cds Dos 4 1 Measurement 5 4 1 Data Manipulation Functions lines oi Mice ES 4 1 Power Meter 335 E de p r See ad eee ee 47 Frequency Limits vs dude 6 3 sd a e 0 Seien 4 8 Self Test PUBeHOBS eiii A A A ER Rs 4 8 Source Locking Functions 4 296 4 4 ace woe DS e A a a 4 8 Data Format e T 4 9 Data COUCDUE e s a E e ae 4 9 DAC ODIOM esa dro un ea ica a od a 4 9 oervice REQUESE A ide ro Maj A 4 9 TABLE OF CONTENTS a TABLE OF CONTENTS Continued SECTION 4 PROGRAMMING Continued Service Request Mask A ds da 4 10 Data Output Formation AA de e A de LR OR edle dere bs 4 11 Prostam Examples s todo ONERE e ACE NUR we Pe 4 12 Reading a Measurement cas dc deed wc 4 13 Mout escena dox Soa de ao eem e eg a NUR ierat in 314 4 13 SECTION 5 OPERATIONAL VERIFICATION TESTS Intro iios TENER NOE COR OP S TS IT Oe oe ES L1 aa D 5 1 Equipment Requirements
7. Digital to Analog Converter Output Voltage Accuracy 25 Temp Stability 0 to 50 C Resolution Load Impedance 0 000 V to 0 999 V 0 5 1 mV 0 01 C mV 1 KQ minimum Connector BNC female on rear panel Protection 10 V ac or de applied to output connector will not cause damage No damage will occur by any load Option 02 Power Meter Range Entire operating range of Band 3 Accuracy 1 2 dB typical O to 50 C 0 5 dB typical 25 C Resolution 0 1 dB from sensitivity to 10 dBm Power Offset Conversion Time 0 2 dBm to maximum input Math function Allows displayed reading to be offset to 0 1 dB resolution Selectable from front panel or via GPIB 1 gate time 50 ms I GENERAL INFORMATION Option 05 Ovenized High Stability Time Base SC Cut Frequency 10 MHz Aging Rate lt 5 x 10 19 24 hrs after 1 hour warm up 1 x 10 year Short Term Stability 1 sec avg 1x 10 rms O to 50 C Temperature Stability 3 x 10 10 Line Voltage Change 2 x 10 Warm up Time at 25 C Within 5 x 10 of final value 10 min after turn on Within 1 x 10 of final value 30 min after turn on Phase Noise 120 dBc Hz at 10 Hz from carrier Option 06 Frequency Extension 578B Only Frequency Range 26 5 GHz to 110 GHz Sensitivity 25 dBm Dynamic Range 30 dB Connector As required by remote sensor Max Input Level 5 dBm Damage Level 10 dBm Amplitude Discrimination 20 dBm Acquisition T
8. Millimeter wave Measurements 3 23 a a AA A 0720 7 72777 7 1 T LITT 3 24 Error MESSAGES ois e HC is SCORE SO Dec dy WR ee SURE 3 24 Operator Error dovete ood Coe o eed eben s 3 24 Counter EMOR ae daa te deed EROR ARR SEAS 3 24 EMP ss TABLE OF CONTENTS Continued SECTION 4 PROGRAMMING GPIB Functions Implemented 4 1 Remote Local Function ens 4 1 Device Clear Function rrr 4 2 Device Trigger Function 4 2 GPIB Address Selection see RE globe eh ee bn 4 2 Tal Oniy Modes pesi kieu 9 3 de 26 ER a A e is 4 2 GPIB Instruction Format rp le lo w Both es Se as AP s 4 3 Formal Definition Of Instructions 4 4 Prostam Code Sef iria eo 2 Xx 309946 3e 304 ee a edad EC Ae ti ie nS 34 4 4 4 4 Dand a a a as A its as ao da 4 4 ESOO wer 42 a a dee a Rem d e E AEN 4 4 Measurement Functions 4 5 Data Manipulation Functions 4 5 Power uo tob rara ge died bu tec a oer iron OW cede iros ruis 4 5 Frequency LIMS s saca dass oa e o de Be ur Sd Pe e 4 5 Source Locking Functions 3 usc b cx reves ie oS Rem 4 5 Sella Fest PUNCHON peinar artis d Edel e X RS 4 6 Data Format ico
9. phase lock equivalent to LOCK key on keyboard 4 3 Elle 575B 578B FORMAL DEFINITION OF INSTRUCTIONS lt OP CODE gt lt NUMBER gt lt TERMINATOR gt OP CODE LETTER LETTER LETTER lt DIGIT gt NUMBER SIGN DIGIT STRING SIGN DIGIT STRING DIGIT STRING NULL TERMINATOR G MIKIH D P C L NULL SIGN NULL lt DIGIT STRING lt DIGIT gt lt DIGIT gt lt DIGIT gt LETTER A B C D EJ F GIH IJ JIKIL MINJOIP Q R SITJUIVIWIXIY Z lt DIGIT gt 112 31 41516 7 8 91 0 PROGRAM CODE SET DISPLAY DA Display Active Output Frequency Reading to Front Panel and Bus DP Display Passive Output Frequency Reading to Bus only DN Display Normal BAND B1 Band 1 10 Hz 100 MHz B2 Band 2 10 MHz 1 GHz B3 Band 3 1 GHz 20 GHz Model 575B 26 5 GHz for Model 578B B4 Band 4 Model 578B Option 06 RESOLUTION R 1 Resolution 1 0 1 Hz Band 1 only RO Resolution 0 1 Hz R1 Resolution 1 lt 10 Hz R2 Resolution 2 100 Hz R3 Resolution 3 1 kHz R4 Resolution 4 lt 10 kHz R5 Resolution 5 lt 100 kHz R6 Resolution 6 lt 1 MHz R7 Resolution 7 lt 10 MHz R8 Resolution 8 lt 100 MHz R9 Resolution 9 lt 1 GHz PROGRAMMING MEASUREMENT FUNCTIONS FA Fast Active Ignore sample rate control FP Fast Passive Terminates FA RS Reset Basic Counter and Converter Tak
10. 2 4 2 4 Shipping Instructions lt se doo we Re SCC KA S 2 4 SECTION 3 OPERATION IntroducHOEE eaa wood 40 amp Rob as cde Bb ve OSD Owe Ree EE eee a 3 1 Front Panel Controls Connectors And Indicators 3 1 Status Display 3c copo eiu dg Boe Eck oe Oe GG ee OR se eS 3 2 Signal rai ee Ehe ed Oe Ae SG dia 3 3 Rear Panel Controls And Connectors 3 4 Instrument Default S ttings sa a a sw NU hd ok x e a a ee 3 4 Vil Elle 575B 578B TABLE OF CONTENTS Continued SECTION 3 OPERATION Continued Cr AI 3 5 RESCULOCAL s adn oie eot dd SUR dje tecti REOR de Quae dois de e Pn 3 5 Units sai ar ee iex 3 5 Clear Data Clear Display asii ACCRUE i ROPA e 3 5 Counter Control Functions 3 6 DE CON ex tra eos ETSI tetto t ttl l1 lt 3 6 Resolution Gate Time Selection 3 6 OA FZ RESOMIHION und uk we dedo ur ee ke der eee dex UR 3 7 Eteguency Limia Won Bh dece a do e fedt Ra 3 8 To Input Frequency Limits ubiera ee ACROSS amp Ses 3 8 To Display Stored DUIS 22 3e adum cm ee eS ES OE 3 8 To Clear Frequency Limits s eos a Nue 36 BE KAS Ro OES OO ipee 3 9 Data Manipulation Functaols 5 23 5 4 avri au RUE Bal HO Nod Se s 3 9 Frequeney OMSEE a deu oec eoe de SORS atc MUR de d oat od e RU eom end 3 9 L
11. 95 GHz 575B 578B 09 Illegal test mode key sequence 10 Illegal DAC key sequence 11 Illegal multiplier key sequence 12 Service request condition input error GPIB only 13 Option not installed 14 Phase lock frequency out of range of current band 15 Cannot store phase lock information Counter not phase locked 16 Storage register O does not exist 17 Illegal bandwidth key sequence 19 Function not allowed in 0 1 resolution 20 Access to this function protected by memory protect switch 40 DAC table error cannot find YIG frequency 41 Calibration frequency error 42 Signal not found COUNTER ERRORS 30 EEPROM error Unable to write to EEPROM 31 Check sum error Section 1 PROM A105 U14 2020215 02 32 Check sum error Section 2 PROM A105 U13 2020215 02 33 Check sum error Section 3 PROM A105 U17 2020215 02 31 32 or 33 Check sum error A105 U14 2020480 01 3 24 PROGRAMMING PROGRAMMING The GPIB interface of the 575B 578B counters is fully compatible with the IEEE 488 1978 standard With the GPIB interface the counter can respond to remote control instructions and can output measurement results via the IEEE 488 1978 Bus interface At the simplest level the counter can output data to other devices such as the HP 5150A Thermal Printer In more sophisticated systems an instrument controller can remotely program the counter trigger measurements and read results GPIB FUNCTIONS IMPLEMENTED The GPIB inter
12. female Max Input Level 1 V rms Damage Level 150 V rms above 1 kHz damage level will decrease at 6 dB octave down to 3 0 V rms Band 2 Frequency Range 10 MHz to 1 GHz Sensitivity 20 dBm Dynamic Range 30 dB Impedance 50 Q nominal Connector BNC female Max Input Level 10 dBm 1 2 I GENERAL INFORMATION Damage Level Acquisition Time Frequency Range Sensitivity Dynamic Range Impedance Connector Max Input Level Damage Level Acquisition Time Amplitude Discrimination FM Modulation VSWR Frequency Limits Band 2 Continued 27 dBm 50 ms Band 3 1 GHz to 20 GHz 26 5 GHz for Model 578B 30 dBm 1 GHz to 12 4 GHz 25 dBm 12 4 GHz to 20 GHz 20 dBm 20 GHz to 26 5 GHz 40 dB 1 GHz to 12 4 GHz 35 dB 12 4 GHz to 20 GHz 30 dB 20 GHz to 26 5 GHz 50 Q nominal Precision Type N female Model 575B APC 3 5 female Model 578B 10 dBm 30 watts 45 dBm 200 ms independent of frequency 10 dB if 10 dB will count one signal accurately if separated by gt 200 MHz 20 MHz p p up to 10 MHz rate lt 2 5 1 typical Keyboard control of desired limits standard Counter will measure largest signal within programmed limits Signal outside operating band must be separated by at least 100 MHz from either limit For signal more than 10 dB above desired signal required separation is typically 200 MHz TCXO Timebase Frequency Aging Rate Short Term Temperature L
13. from 400 to 500 MHz in increments of 50 kHz The cycle rate can be adjusted using the sample rate control It is used to test the VCO and phase lock circuitry TEST PRESS C to activate this test TEST 08 Power Meter Offset Test This test sets the power meter zero DAC The setting is entered as a four digit hexadecimal number The first two digits are used to program the coarse offset DAC and the last two digits program the fine offset DAC Test 08 enables the power meter zero DAC to be tested and provides a DC level signal to aid in troubleshooting power meter circuitry TEST PRESS o to activate this test TEST 09 Power Meter Gain Test This test sets the power meter sensing circuit to a selected number The number is entered as a five digit hexadecimal number in the following format Ist digit A107U10 bits 4 7 2nd digit A107U10 bits 0 3 3rd digit A107U12 bits 4 7 Power Meter Option only 4th digit A107U12 bits 0 3 Power Meter Option only 5th digit bit O Sets Amp marked 15 dB Gain to high gain 5th digit bit 1 Sets Amp marked 30 dB Gain to high gain Digit 5 is a 2 bit number so any number entered for digit 5 will be justified to a number from 0 3 Test 09 tests the RF level and power meter circuits TEST PRESS o Cs to activate this test Elle _575B 578B TEST 10 Memory Read Alter Routine Test 10 reads the microprocessor address and if that add
14. on the three right most digits When both power and frequency are displayed frequency resolution is limited to 100 kHz e Status display a series of annunciators provided to indicate current operating status of the counter e Keyboard both data entry and function selection are controlled through the keyboard see Keyboard Section on p Figure 3 2 Status Display STATUS DISPLAY EXT REF lights to indicate the counter is set to an external time base reference CAUTION When EXT REF lights it does NOT indicate that correct signal level has been applied dBm lights to indicate that the Power Meter Option 02 is active LCK lights when the counter has phase locked an external source RMT lights to indicate that front panel controls are disabled and that the counter is being controlled through the GPIB interface DAC lights to indicate that that the Digital to Analog Converter Option 01 is active BW lights to indicate a phase lock loop bandwidth has been selected MLT lights to indicate the multiplier function is active FRO LMT LOW lights when Band 3 frequency limit low is active FRQ LMT lights when Band 3 frequency limit high is active OFFSET FRQ lights when frequency offset is active OFFSET PWR lights when power offset is active BND 1 2 3 41 42 43 or 44 lights to indicate which operating range has been selected When any Band 4 annunciator is lit it indicates that the Extend
15. ports are provided one for coarse tune and one for phase lock With these outputs a source can be locked from 10 MHz up to the maximum operating frequency of the counter Frequencies can be selected to a resolution of 10 kHz and maintain the long term accuracy and stability of the internal timebase crystal oscillator Elle 575B 578B SPECIFICATIONS General Resolution Front panel keyboard input select 0 1 Hz to 1 GHz 0 1 Hz resolution in Band 1 only no frequency offset or multiplier in 0 1 Hz resolution Gate Time ms for 1 kHz resolution 1 s for 1 Hz resolution Display 12 digit LED sectionalized Accuracy 1 count time base error Test Front panel selected diagnostics Sample Rate Controls time between measurements variable from 100 ms typ to 10 s Switchable Hold position freezes display indefinitely Reset Resets display to zero and initiates new reading Offsets Keyboard control of frequency offsets standard and power offsets standard with power measurement Option 02 Displayed frequency power is offset by entering value to 1 Hz resolution 0 1 dB power Operation Temp O to 50 C Power 100 120 220 240 VAC 10 selectable 50 to 60 Hz Weight Net 26 Ib 11 8 kg Weight Shipping 32 Ib 14 5 kg Size H x W x D 3 5 x 16 75 x 14 89 mm x 425 mm x 356 mm Accessories Furnished Power Cord and Operation Manual Band 1 Frequency Range 10 Hz to 100 MHz Sensitivity 25 mV rms Impedance 1 MQ 20 pF Connector BNC
16. power meter offset PRESS to activate the power offset function dB PRESS C to terminate power offset function GPIB Examples Enter OUTPUT 719 PA to turn on the power meter Enter OUTPUT 719 PP to turn off the power meter Enter OUTPUT 719 PO10DB to set a power offset of 10 dB Enter OUTPUT 719 POODB to clear a power offset Enter OUTPUT 719 OP to disable offsets Enter OUTPUT 719 OA to enable offsets TEST SELECTIONS This counter incorporates an automatic power on self test along with a variety of performance calibration and troubleshooting tests accessible from the front panel POWER ON TESTS The power on tests are automatically performed by the counter and verify proper operation of most functional areas of the counter As part of the power on test the counter checks its and PROM memory During these tests dashes are displayed on the front panel If all tests pass the counter will begin normal operation about one second after turn on If the RAM test fails all 12 sections of the display will read E which indicates that either the RAM or RAM decoding circuit is faulty If the PROM test fails the error message will be displayed indicating that either the PROM or the PROM decoding circuitry is faulty TEST FUNCTIONS In addition to the power on tests the counter features a variety of other performance calibration and configuration tests accessible via the TEST key on the front panel
17. the instrument If more extensive testing is required refer to Section 5 1 Before connecting power to the instrument check the rear panel to make sure the correct fuse is installed and the V A C switch is set properly 2 Connect the power cord to the appropriate single phase power source The ground terminal on the power cord plug must be properly grounded 3 Turn the POWER switch to ON Dashes will be displayed for about one second The counter should then display all zeros indicating that the automatic self check has been successfully completed TEST 4 PRESS C 1 Display should read 200 000 000 1 TEST 5 PRESS O C 2 Display should read all 8 s and all annunciators should be lit TEST 6 PRESS o EN Each display segment should light in turn TEST 7 PRESS __ 4 Each digit should light in turn This completes the incoming operational check HE MP ss SERVICE INFORMATION PERIODIC MAINTENANCE No periodic preventive maintenance is reguired To maintain accuracy it is recommended that the counter be recalibrated every 12 months For further information refer to the service manual CAUTION Do not attempt repair or disassembly of the Microwave Converter Millimeter Wave Converter or Time Base Oscillator assemblies Such action will void the warranty of the counter Contact EIP or your sales representative if these units reguire servicing COUNTER IDENTIFICATION This counte
18. 3 Microwave Band Subband 1 Resolution 0 1 Hz Frequency Multiplier 01 Frequency Offset O Hz Frequency Limit Low 950 MHz Frequency Limit High 20 5 GHz Model 575B 26 7 GHz Model 578B Frequency Display On 3 4 3 OPERATION POWER METER DAC RESET on off offset dB KA Figure 3 5 Keyboard KEYBOARD The keyboard consists of 16 push button keys that control the major functions of the counter Twelve keys are used for numerical data entry the digits O through 9 the decimal point and the change sign Two keys MHz and GHz act as terminators for the input of frequency offset frequency limits or phase lock frequency The CLEAR DATA and CLEAR DISPLAY keys are used to clear stored or displayed data Twelve of the keys are also used to select the band resolution test function frequency offset frequency multiplier frequency limits band width lock frequency phase lock store and recall function RESET LOCAL RESET LOCAL is a dual function key When the counter is in remote pressing the RESET LOCAL key once causes the counter to return to local When in local pressing the RESET LOCAL key resets the counter and converter and initiates a new measurement UNITS MHZz GHz The MHz and GHz keys are terminators for the input of frequency offset frequency limits and phase lock frequency CLEAR DATA CLEAR DISPLAY Keyboard Examples DATA PRESS to return data of selected function to default state Clears
19. 4 Operation Option 06 CAUTION Before connecting the remote sensor to the frequency source verify that the power level is within the limits specified for the sensor in a remote sensor ALWAYS connect the LO cable to the counter Static discharge or ground loops can damage or destroy the diode first then touch the shield to the body of the sensor before connecting Be sure that the counter and waveguide port to which the sensor connects have a common ground If in doubt connect with a ground strap before connecting the remote sensor 3 23 EP zs Operation To operate the counter in one of the Band 4 frequency ranges connect the short cable supplied with the Frequency Extension Cable Kit from the lower Band 4 output jack on the front panel to the Band 3 input Connect the long cable from the upper Band 4 jack to the remote sensor Select the desired band Connect the remote sensor to the frequency source The counter will automatically measure and display the frequency of the source ERROR MESSAGES When an error occurs the error number is displayed The probable cause of each error is listed below OPERATOR ERRORS 01 Illegal key sequence 02 A resolution number was not entered 03 A band number was not entered or the number entered was too large 04 No power reading in current band 05 Frequency limit high gt 20 5 GHz 27 GHz 578B 06 Freq Limit Hi Freq Limit Lo lt 100 MHz 07 Frequency limit low lt
20. 9 999 999 000 GHz to the bus if asked to output readings POWER METER PA Power Active See Option 02 PP Power Passive See Option 02 EP zs FREQUENCY LIMITS FH Frequency Limit High Enables entry of frequency limit high 10 MHz resolution available The basic counter and converter will be reset after the data entry FL Frequency Limit Low Enables entry of frequency limit low 10 MHz resolution available The basic counter and converter will be reset after the data entry SELF TEST FUNCTIONS TA Test Active Enables the counter to perform the selected test function by entering TA followed by two digits When Test 05 08 09 or 10 is active and the counter is being asked to output data the data that is displayed on the front panel is the data being output The output data format is as follows XXXXXXXXXXXXCRLF X alpha numeric CR carriage return LF line feed For detailed descriptions of tests 01 through 09 and test 11 see the section on Keyboard Controlled Circuit Tests TP Test Passive Terminates test function SOURCE LOCKING FUNCTIONS PF Phase lock frequency Enables entry of phase lock frequency to 10 kHz resolution if phase lock frequency is above or equal to 50 MHz and 2 5 kHz resolution if it is below 50 MHz The counter will attempt to phase lock after data entry PL Initiates phase lock sequence The counter will attempt to phase lock to the frequency specified in the phase lock fre
21. B Frequency offset entered from the keyboard To do mX B calculation for m 2 b 70 MHz Keyboard Example FREQ FREQ MH press O a DO DCL MULT OFFSET SOURCE LOCKING FUNCTIONS PHASE LOCK FREQUENCY Enables entry of a phase lock frequency to a 10 kHz resolution if the phase lock frequency is above or equal to 50 MHz or b 2 5 kHz resolution if the phase lock frequency is below 50 MHz The counter will attempt to phase lock after the entry sequence is terminated The phase lock operation will terminate if the RESET LOCAL key is pressed while the counter is attempting to phase lock Elle 575B 578B NOTE If the tuning voltage required to set a source at a particular frequency changes in excess of the capture range of the phase lock circuitry the counter will not be able to re lock the source using stored lock frequencies To Enter Phase Lock Frequency Keyboard Examples LOCK PRESS C to display phase lock frequency last entered Notice flashing annunciator FREQ PRESS the corresponding number key to select desired phase lock frequency MHz GHz PRESS or E to terminate input sequence Notice LCK annunciator continues to flash while counter is attempting to phase lock LCK annunciator lights solidly when phase lock is successful If phase lock is unsuccessful the LCK annunciator continues to flash until lock is achieved or until the sequence is manually terminated LOCK GHz PRESS
22. DESCRIPTION The Model 575B and Model 578B Source Locking Counters are multi function microprocessor based devices These counters are not only able to perform frequency and optionally power measurement but can also tune and phase lock an external signal source over a wide frequency range The basic frequency range of the 575B is 10 Hz to 20 GHz while the 578B extends to 26 5 GHz When the 578B is equipped with Frequency Extension Capability Option 06 and used with the Model 590 and a Remote Sensor the counter is capable of operating up to 110 GHz Frequency counting is divided into four bands Band 1 is a high impedance input 1 MQ 20 pF and covers 10 Hz to 100 MHz Band 2 is a 500 input operating from 10 MHz to 1 GHz Band 3 is also a 50 2 input and covers the range of 1 GHz to 20 GHz using the 575B and 1 GHz to 26 5 GHz using the 578B Band 4 is an optional band and covers 26 5 to 110 GHz and is subdivided into 4 frequency ranges Band 4 1 26 5 40 GHz Band 4 2 40 60 GHz Band 4 3 60 90 GHz Band 4 4 90 110 GHz An optional power measurement capability Option 02 is available to supplement Band 3 With this option the counter can simultaneously display frequency to 100 kHz resolution and power to 0 1 dB resolution from minimum sensitivity up to 10 dBm The other major feature of the 57XB counters is the ability to tune and phase lock virtually any frequency source that is capable of being electronically tuned Two output
23. ER 0090 Sr o o ma ne o CH1 e Figure 5 2 Band 1 Range and Sensitivity Test Setup 10 Hz to 10 MHz Procedure Connect equipment as shown in Figure 5 2 Set the counter to Band 1 and select resolution 2 Set the output frequency from the synthesizer to 10 Hz Using the oscilloscope set the output signal level from the synthesizer to 25 mVrms 70 7 mV p p into 50 Q Apply the 10 Hz signal to the counter verify proper reading and record the results 6 Repeat steps 3 4 and 5 at 100 Hz 1 kHz 10 kHz 100 kHz 1 MHz and 10 MHz ee ee BS BAND 1 RANGE AND SENSITIVITY TEST 20 MHz to 100 MHz Description This test verifies counter operation from 20 MHz to 100 MHz at 25 mVrms 70 7 mV p p into 50 The oscilloscope is used to set signal levels Equipment Sweep generator Wiltron 6668A Source locking counter EIP 578B Power splitter Hewlett Packard 11667B Oscilloscope Tektronix 475 50 termination Pamona 4119 50 S OPERATIONAL VERIFICATION TESTS MODE Source Locking Setup See Figure 5 1 COURSE OUTPUT OSCILLOSCOPE 575B 578B COUNTER oT eee AAA CHI e 50 Q A LA TERMINATION Figure 5 3 Band 1 Range and Sensitivity Test Setup 20 MHz to 100 MHz Procedure Connect eguipment as shown in Figure 5 3 Set the 575B 578B counter to Band 1 and select resolution 3 Using the EIP 578B counter source lock the sweeper at 20 MHz Using the oscilloscope set the output sign
24. EST RECORD MODEL SERIAL NO DATE TEST SPECIFICATIONS BAND 1 RANGE AND SENSITIVITY TEST INPUT SENSITIVITY BAND 2 RANGE AND SENSITIVITY TEST INPUT SENSITIVITY 10 Hz 100 Hz kHz 10 kHz 100 kHz 1 MHz 10 MHz 20 MHz 50 MHz 100 MHz 10 MHz 100 MHz 250 MHz 300 MHz 400 MHz 500 MHz 600 MHz 700 MHz 800 MHz 900 MHz 1 GHz BAND 3 RANGE AND SENSITIVITY INPUT SENSITIVITY 578B ONLY 1 GHz 3 GHz 6 GHz 10 GHz 12 4 GHz 15 GHz 18 GHz 20 GHz 22 GHz 24 GHz 26 5 GHz 5 9 10 Hz TO 100 MHz 25 mVrms 250 MHz TO 1 GHz 20 dBm 1 GHz TO 20 GHz 26 5 GHz 30 dBm 25 dBm 20 dBm EP zs OPERATIONAL TEST RECORD Continued TEST ACTUAL SPECIFICATIONS BAND 3 AMPLITUDE DISCRIMINATION TEST CONDITIONS F1 gt F2 BY 15 dB OR MORE F1 F2 3 GHz 31GHz o 10 dB 6 1 GHz 6 GHz 12 GHz 12 1 GHz 18 GHz 17 9 GHz BAND 4 1 RANGE AND SENSITIVITY TEST 26 5 GHz TO 40 GHz 578B OPTION 06 INPUT SENSITIVITY 26 5 GHz 25 dBm typical 30 GHz 35 GHz 40 GHz INDEX Numbers D Lock Key 3 13 A Automatic Frequency Measurements 3 21 B B W Key 3 13 Band 1 Range and Sensitivity Test 10 Hz to 10 MHz 5 3 Band 1 Range and Sensitivity Test 20 MHz to 100 MHz 5 4 Band 2 Range and Sensitivity Test 5 5 Band 3 Amplitude Discrimination Test 5 7 Band 3 Range and Sensitivity Test 5 6 Band 4 Subband 1 Range and Sensitivity Test 578B Option 06 Only 5 8 Band Selecti
25. Figure 5 6 Band 3 Amplitude Discrimination Test Setup Procedure 1 Connect equipment as shown in Figure 5 6 2 Set signal generator 1 to 3 0 GHz at O dBm and set signal generator 2 to 3 1 GHz at 6 dBm 3 Using the spectrum analyzer adjust the generator power levels so that the signal amplitude difference is 10 dB 5 1 4 Verify that the counter correctly measures the frequency of the higher power signal source 5 Repeat steps 2 3 and 4 at 6 and 6 1 GHz at 12 and 12 1 GHz and at 17 9 and 18 GHz BAND 4 SUBBAND 1 RANGE AND SENSITIVITY TEST 578B Option 06 Only Description This test verifies counter operation from 26 5 GHz to 40 GHz at 25 dBm Equipment Sweep generator Wiltron 6668A Power meter Hewlett Packard 437B Power sensor Hewlett Packard R8486A Remote sensor EIP 091 Cable kit EIP 590 SWEEP GENERATOR POWER METER REMOTE SENSOR POWER SENSOR Figure 5 7 Band 4 Range and Sensitivity Test Setup Model 578B Option 06 Procedure Connect equipment as shown in Figure 5 7 Set the counter to Band 4 and select resolution 3 Set the output frequency from the sweeper to 26 5 GHz Using the power meter set the output signal level from the sweeper to 25 dBm Apply the 26 5 GHz signal to the remote sensor verify proper reading and record the results 6 Repeat steps 3 4 and 5 at 30 35 and 40 GHz A O _ S OPERATIONAL VERIFICATION TESTS OPERATIONAL T
26. M input on the sweeper as shown in Figure 3 7 Select the appropriate band on the counter On the sweeper select the external sweep mode and enable the FM modulation input 575B 578B COUNTER COURSE TUNE OUTPUT EXTERNAL SWEEP INPUT WILTRON 6600 COUPLER Figure 3 7 Source Locking Setup With the equipment set up as described above source locking over the entire range of the sweeper can be achieved by simply entering the desired frequency For example to lock the sweeper at 10 GHz LOCK GHz PRESS FREQ At this point the sweeper should be locked to 10 GHz On the front panel of the counter the LCK annunciator should be lit and 10 GHz should be displayed 3 22 3 OPERATION For further information on using the source locking capability with most of the common microwave sweepers please contact EIP directly or your local sales representative OPTIONS MILLIMETER WAVE MEASUREMENTS The 578B offers an extended frequency option Option 06 that allows operation between 26 5 GHz and 110 GHz This band is designated as Band 4 on the counter and is divided into four subbands as shown below Band Frequency Range 41 26 5 40 GHz 42 40 50 GHz 43 60 9 GHz 44 90 110 GHz To perform measurements in this range the Model 590 Frequency Extension Cable Kit and one or more of the remote sensors are required 575B 578B COUNTER MILLIMETER WAVE INPUT Figure 3 8 Equipment Setup for Band
27. OH ac Seg dou door A SHE Red ed CA a 3 16 Keyboard Operation 3 16 Test OCIECHIONS ed neue Wege Sce do died s d 3 17 Poweron Tea MEET T RE ED a mobi 3 17 Test EHBC OLIS a mirare dotato ede See pe USE ea cal Be tu 3 17 Test 01 200 MHz Self Test 3 17 Test 02 Light Display Segments Test 3 18 Test 03 Scan Display Segments Test 3 18 Test 04 Scan Display Digits Test 3 18 Test 05 Keyboard Test ux gue we pU RUE CE EE Ue Eo RU n 3 18 Test 06 Converter Ramp Test 3 19 Test 07 Sweep VCO Test 3 19 Test 08 Power Meter Offset Test 3 19 Test 09 Power Meter Gain Test 3 19 Test 10 Memory Read Alter Routine 3 20 Test 90 Display and or Alter GPIB Address 3 20 Test 91 YIG DAC Automatic Calibration 3 20 To Exit esas o A A AA 3 20 Mutually Exclusive Functions 3 21 Signal Measurements with the 575B 578BB 3 21 Automatic Frequency Measurementst 3 21 Multiple Signal Measurements 3 21 Source LOCKING 3 22 ECC T oe er ee 30 362 ae ee ea ll T 4 T 3 23
28. PUT 719 FOP to remove frequency offsets MULTIPLY FUNCTION The multiply function multiplies the measured frequency by a positive integer between 1 and 99 The result is displayed to 1 kHz resolution The multiplier will be incorporated into the frequency measurement after the next gate To Enter Multiplier Keyboard Examples FREQ PRESS to display multiplier last entered Notice flashing annunciator MULT PRESS the corresponding number keys to select desired multiplier Notice MLT annunciator solidly lit after second key is released FREQ PRESS 2 to set a frequency multiplier of 2 MULT GPIB Examples Enter OUTPUT 719 MLO2 to set a frequency multiplier to 2 Enter OUTPUT 719 ML99 to set a frequency multiplier to 99 3 10 HOA NA 2 3 OPERATION To Display Multiplier Keyboard Examples FREQ PRESS to display stored frequency multiplier MULT CLEAR PRESS C to return counter to measurement display mode DISPLAY To Clear Multiplier Keyboard Example FREQ CLEAR FREQ press J J J GJ MULT DATA MULT GPIB Example Enter OUTPUT 719 MLP to clear the multiplier function mX B By using the frequency offset and multiply functions the counter can automatically perform mX B calculations The equation for the function performed is Displayed Reading mX B where m Multiplier 00 to 99 entered from the keyboard X Input frequency
29. R is received the counter will initiate a new frequency reading cycle The converter will not be reset If the counter does not have a converter lock the DEVICE TRIGGER will not be performed until a converter locked condition exists GPIB ADDRESS SELECTION This counter employs a software selectable GPIB address which is stored in non volatile memory To verify the GPIB address select Test 90 the counter will display the current GPIB address Press the Clear Display key to exit Test 90 without changing the GPIB address To change the GPIB address select Test 90 followed by the desired GPIB address see Figure 4 for a list of allowable GPIB address codes For example CLEAR TEST PRESS e 2 C to select GPIB address 20 DISPLAY Since the GPIB address is stored in non volatile memory the counter will always default to the last GPIB address selected The GPIB address selection is also used to put the counter in the Talk Only or Listen Only mode To put the counter in the Listen Only mode simply set the address to 41 or higher TALK ONLY MODES The TALK ONLY modes enable the counter to output data to other devices on the bus such as a printer without the need of an instrument controller To use the counter in a TALK ONLY mode enter the GPIB address corresponding to the desired mode of operation PROGRAMMING The counter can be put in four different modes of operation in the Talk Only mode The foll
30. REQ PWR PP FREQ TAO1 FREQ FR PA FREQ PP FREQ TAO1 FREQ PR PA PWR PP 999 9 TAO1 999 9 BR FR or PR TAO5 08 09 or 10 Data on front panel display PROGRAM EXAMPLES The following measurement conditions are set by addressing the counter to listen and then sending the following character string B3 R2 F079 36M FH123G FL4 26G FA DP BAND 3 A RESOLUTION 100 Hz FREQUENCY OFFSET 79 36 MHz FREQUENCY LIMIT HIGH 12 3 GHz FREQUENCY LIMIT LOW 4 26 GHz FAST ACTIVE DISPLAY PASSIVE 4 12 4 PROGRAMMING READING A MEASUREMENT To read a measurement from the counter to a controller the counter must first be addressed to talk and the controller to listen The EIP counters use two different modes The HOLD ACTIVE or HA mode takes one reading and then waits for a RESET command or a device trigger GPIB Command In this condition the counter is sent a RESET or device trigger and when addressed to talk a new reading is output to the bus The counter will hold that particular reading on the display until another RESET command or device trigger command is received The second mode is HP or HOLD PASSIVE In this mode data is read out in a normal bus fashion The display is automatically updated according to the sample rate chosen In this condition successive readings can be output without generating a RESET or device trigger command each time INPUT SPEED It takes a specific amount of time for the counter to process the inp
31. Section 1 of this manual vi TABLE OF CONTENTS TABLE OF CONTENTS Waman 26 Sh ae ro D arte D ee mx feos O aa des iii CErtincatiotr nounou ov daa hubo deser a tek ds dose in iii Manual Change Information eee eee eens iii Customer Supeestion Form a X Ne E eww dex ue ue Ey ees iii SPAM TTE a ia ee Ne a et iv SECTION 1 GENERAL INFORMATION Desc EUER POS E T C TOLL LI LT VII DLL 1 1 SDECHICAtIODS s 3 amp Aie Bod de A oar KAR Red sue Qr V E e ire te 1 2 Options And MECESSONES 424 4452 4 ub UC Boo bur Ver Ae dcs OS SECA dee 1 8 Declaration of acre a dod x Ue eR ABC o d 1 9 SECTION 2 INSTALLATION Unpacking and Initial Inspection 2 1 SIC ME dos E A A BO AAA eee 78 8 2 1 Operating Conditions 25 5 y Es ae Ee o efe Red 2 1 Ventilation e 4 6 rex AA qe a aee AA eso 2 1 Installation se win m MAAE A EL Deed Re utc dod COP RU ESCORT B 2 2 Preparation For USE amp 44 4 3 de eA AL OS Ra d 2 2 Voltage Selection 9 e rg e SI 2 2 Fuse Replacement sa a prerade da SU IE ERU e oe cd 2 2 Incoming Operational Checkout 2 3 Service Information m 6 10 25 ta dd 2 4 Periodic Maintenance ee eee eee t 2 4 Counter Identification 4 29 63 A Ee EORR RR RU
32. The following is a list of these tests TEST 01 200 MHz Self Test This function is used to verify that the Count Chain Gate Generator and the VCO are operational TEST PRESS 2 1 toactivate this test 3 17 EMP When this function is entered the counter will do the following Exit the current band Set the hardware to the self test mode Set the VCO to 400 MHz wW Set the counter to take frequency measurements only Begin frequency measurements The display will show the frequency measurement results These results will be output to the GPIB interface when frequency readings are requested The measurement result should be 200 MHz 1 count TEST 02 Light Display Segments Test This test will light all LEDs annunciators and decimal points It is used to verify that all displays light to check the intensity of the display and to align the LEDs and annunciators TEST press e 2 toactivate this test TEST 03 Scan Display Segments Test This test lights each segment of every digit and each annunciator in every bank sequentially The cycle rate can be adjusted with the sample rate control It is used to verify that each segment of the display each segment driver and the display multiplexer operates properly and independently TEST PRESS e to activate this test TEST 04 Scan Display Digits Test This test ligh
33. al includes Operation Manual 040 Service Kit 050 Sof Pac Carrying Case 575B 578B DECLARATION OF CONFORMITY Application Of Council Directive 89 336 EEC Standatds to which Conformity is Declared EMC EN50011 EN50082 1 Standards to which Compliance is Declared Safety IEC 1010 1 1990 Manufactuter s Name EIP Phase Matrix Inc Manufactutet s Address 109 Bonaventura Dr San Jose CA 95134 Type of Equipment Frequency Counter Model Name s 575B 578B Tested By Rockford Engineering Services Inc 9959 Calavetas Road Sunol CA 94586 USA Project Engineer Mr Bruce Gordon and Leo Hernandez Reviewet Mr Michael Gbadebo P E I the undersigned hereby declare that the equipment specified above conforms to Directives and Standards listed For Phase Matrix Inc Name Mark Espinosa T tle QA Manager Signature Date W o 2004 E IP 575B 578B This Page Intentionally Left Blank 2ANSTALLATION INSTALLATION UNPACKING AND INITIAL INSPECTION If the shipping container or cushioning material is damaged it should be kept until the contents of the shipment have been checked for completeness and the instrument has been checked mechanically and electrically If the contents are incomplete if there is mechanical damage or defect or if the instrument does not pass the electrical performance tests notify EIP in care of the address shown on the title page If the shipping container is damaged o
34. al level from the synthesizer to 25 mVrms 70 7 mV p p into 50 Q 5 Apply the 20 MHz signal to the 575B 578B counter verify proper reading and record the results 6 Repeat steps 3 4 and 5 at 50 and 100 MHz ee ee BAND 2 RANGE AND SENSITIVITY TEST Description This test verifies counter operation from 10 MHz to 1 GHz at 15 dBm The power meter is used to set signal levels Equipment Sweep generator Wiltron 6668A Source locking counter EIP 578B Power meter Hewlett Packard 437B Power sensor Hewlett Packard 8481A Power splitter Hewlett Packard 11667B Procedure 1 Connect equipment as shown in Figure 5 4 2 Set the 575B 578B counter to Band 2 and select resolution 3 e de 6 Source Locking Setup See Figure 5 1 5788 COUNTER A E gt COURSE OUTPUT POWER METER EXTERNAL SWEEP 575B 578B COUNTER INPUT POWER POWER SPLITTER SENSOR Figure 5 4 Band 2 Range and Sensitivity Test Setup Using the EIP 578B counter source lock the sweeper at 10 MHz Using the power meter set the output signal level from the sweeper to 20 dBm Apply the 10 MHz signal to the counter verify proper reading and record the results Repeat steps 3 4 and 5 at 100 MHz 250 MHz 300 MHz 400 MHz 500 MHz 600 MHz 700 MHz 800 MHz 900 MHz and 1 GHz BAND 3 RANGE AND SENSITIVITY TEST Description This test verifies counter operation from 1 GHz to 20 GHz 26 5 GHz for the 578B coun
35. ate time RES PRESS C EN to select a 10 Hz resolution 1 second gate time RES PRESS 2 to select a 100 Hz resolution 01 second gate time RES PRESS C to select a 1 kHz resolution 1 ms gate time RES PRESS 4 to select a 10 kHz resolution 1 ms gate time RES PRESS C to select 1 GHz resolution 1 ms gate time GPIB Examples Enter OUTPUT 719 RO to select a 1 Hz resolution Enter OUTPUT 719 R1 to select a 10 Hz resolution Enter OUTPUT 719 R6 to select a 10 MHz resolution Enter OUTPUT 719 R9 to select a 1 GHz resolution 0 1 Hz Resolution In Band 1 only the counter also provides a 0 1 Hz resolution When 0 1 Hz is selected in Band 1 the significance of the digits on the front panel display is shifted left 3 digits For example a 9 MHz signal input is displayed as 9 GHz One digit is displayed to the right of the decimal and the two right most digits are blanked out The display digit to the right of the decimal will be zero until the measurement is updated at the end of the 10 second gate interval Keyboard Examples BAND PRESS to select Band 1 RES PRESS C to select a 0 1 Hz resolution GPIB Examples Enter OUTPUT 719 B1 to select Band 1 Enter OUTPUT 719 R 1 to select a 0 1 Hz resolution EP FREQUENCY LIMITS The frequency limit keys enable entry of low and or high frequency limits to 10 MHz resolution in Band 3 Th
36. ck when the stored phase lock frequency is recalled There are a total of nine storage registers Keyboard Examples STORE PRESS to display current phase lock frequency to 100 Hz resolution Notice flashing annunciator PRESS an integer between 1 and 9 inclusive to display the storage register in which the phase lock information is to be stored STORE PRESS 1 to store the current phase lock frequency in register 1 GPIB Example Enter OUTPUT 719 ST2 to store current phase lock frequency in register 2 RECALL The RCL key enables the counter to perform one of the following functions 1 To display one of the stored phase lock frequencies 2 To phase lock to one of the stored phase lock frequencies or 3 To clear a stored phase lock frequency 3 14 To Display a Stored Phase Lock Frequency Keyboard Examples RCL PRESS display the rcl Notice flashing annunciator PRESS the corresponding number key to display the storage register to be recalled Note that the stored phase lock frequency is displayed to a resolution of 100 Hz and is followed by the storage register number CLEAR PRESS to return counter to measurement display mode DISPLAY To Phase Lock to a Stored Phase Lock Frequency Keyboard Examples RCL PRESS to display the rcl Notice flashing annunciator PRESS the corresponding number key to display the storage register to be recal
37. d return to normal operation DISPLAY 3 20 2 3 OPERATION MUTUALLY EXCLUSIVE FUNCTIONS 1 When self test Test 01 is active all other counter functions are inactive with the exception of the resolution function If any key is pushed when the counter is in self test the test is exited 2 The power meter function is terminated whenever BAND 1 2 or 4 is selected 3 The source lock function is terminated when the reset function is activated 4 The counter is not able to phase lock a source and take power readings at the same time For the source lock and power meter functions the most recently activated function will override the other function For example if the power meter function is on and then the source lock function is activated the power meter function is then turned off SIGNAL MEASUREMENTS WITH THE 575B 578B AUTOMATIC FREOUENCY MEASUREMENTS To measure the freguency of a CW signal apply the signal to input connector that corresponds to the freguency being measured and select the appropriate band The counter will then proceed to automatically find the signal measure it and display the measured freguency MULTIPLE SIGNAL MEASUREMENTS In actual microwave environments there are often multiple signals present In a multi signal environment the counter will automatically find and measure the largest signal as specified by amplitude discrimination In Band 3 the counter can also measure signals other than the
38. e a new reading after reset HA Hold Active HP Hold Passive DATA MANIPULATION FUNCTIONS FO Frequency Offset Take a new reading after data entry if counter not in hold PO Power Offset Take a new reading after data entry if counter not in hold OA Offset Active Add Frequency Offset to Frequency Reading Add Power Offset to Power Reading if Power Meter Function is active OP Offset Passive Terminates OA ML Multiplier Multiplies frequency readings by an integer number In Start up condition although OA is Active Frequency and Power Offsets are programmed to zero POWER METER PA Power Meter Option Active Initiate a new gate PP Power Meter Option Passive Terminates PA FREQUENCY LIMITS FH Frequency Limit High Basic counter and converter will be reset after data entry FL Frequency Limit Low Basic counter and converter will be reset after data entry SOURCE LOCKING FUNCTIONS PF Phase lock frequency Counter attempts to phase lock after data entry PL Initiates phase lock sequence Equivalent to PHASE LOCK key on keyboard BW Bandwidth Selects phase lock loop bandwidth ST Store Equivalent to STORE key on keyboard RC RECALL Equivalent to RECALL key on keyboard CA Coarse tune active Source lock process operates normally CP Coarse tune passive Source lock process bypasses coarse tune process for faster source lock time SELF TEST FUNCTION TA Test Active TP Te
39. e converter is reset after the entry sequence To Input Frequency Limits Keyboard Examples FREQ LIMIT PRESS to display the low frequency limit last entered Notice flashing annunciator low PRESS the corresponding number key to select desired frequency low limit to 10 MHz resolution MHz GHz PRESS or to terminate the input sequence Notice FRO LMT LOW annunciators solidly lit after terminator key is released FREQ LIMIT GHz PRESS 2 to set a low frequency limit of 2 GHz low FREQ LIMIT PRESS to display the high frequency limit last entered Notice flashing high annunciator PRESS the corresponding number key to select desired frequency high limit to 10 MHz resolution MHz GHz PRESS C or to terminate the input sequence Notice FRQ LMT HI annunciators solidly lit after terminator key is released FREQ LIMIT GHz PRESS 5 to set a high frequency limit of 6 GHz high GPIB Examples Enter OUTPUT 719 FL2GHZ to select a low frequency limit of 2 GHz Enter OUTPUT 719 FH6GHZ to select a high frequency limit of 6 GHz To Display Stored Limits Keyboard Examples FREQ LIMIT FREQ LIMIT PRESS or C to display stored frequency low high limit low high CLEAR PRESS to return counter to measurement display mode DISPLAY 3 8 3 OPERATION To Clear Freguency Limits Keyboard Example FREO LIMIT CLEAR FREQ LIMIT CLEAR PRESS
40. e set To disable the Service Request function input SROO NOTE Even when the Service Request function is disabled the Service Hequest status byte will still be continuously altered to reflect the internal states of the counter 4 9 input buffer empty measurement available not phase locked counter searching phase locked frequency reading register overflow multiplier too large SERVICE REQUEST MASK The counter can be instructed to send an interrupt by setting the SRQ line on the GPIB when any ORed combination of the bits in the status byte are set This is done by sending the counter a service request mask For example to instruct the counter to generate an SR on measurement available OR input buffer empty send the following service request mask OUTPUT 719 SR33 This would tell che counter to generate an SRQ whenever bit O or bit 5 of the status byte are set Since bit O corresponds to measurement available and bit 5 corresponds to input buffer empty the counter would generate an SRQ whenever either the input buffer was empty or a measurement was available The following items should be included in any program using the SRO feature 1 Tell the counter when to generate an SRQ That is tell the counter which events should generate an SRQ This is done using the SROMASK command 2 Tell the controller to monitor the SRQ line on the GPIB The SRQ is a maskable interrupt and the controller needs to know if
41. ector from the 578B counter is connected to the external sweep input on the sweeper The Y LOCK OUT connector on the 578B counter is connected to the FM input on the sweeper The FM modulation on the sweeper is enabled and the sweeper is set to the external sweep mode 5 2 3 OPERATIONAL VERIFICATION TESTS 575B 578B COUNTER A ERR Re 7 COURSE TUNE OUTPUT EXTERNAL SWEEP INPUT OUTPUT WILTRON 6600 HP11667B POWER SPLITTER Figure 5 1 Source Locking Setup With the eguipment set up as described above source locking over the entire range of the sweeper can be achieved by entering the desired freguency For example to lock the sweeper at 10 GHz LOCK GHz press C CJ CL FREQ At this point the sweeper should be locked to 10 GHz the LCK annunciator on the counter should be lit and 10 GHz should be the displayed frequency In the following tests the output frequency from the sweeper is controlled directly by the EIP 578B counter while the power is controlled at the sweeper OPERATIONAL VERIFICATION TEST PROCEDURES BAND 1 RANGE AND SENSITIVITY TEST 10 Hz to 10 MHz Description This test verifies counter operation from 10 Hz to 10 MHz at 25 mVrms 70 7 mV p p into 50 O The oscilloscope is used to set signal levels Eguipment Synthesized function generator Wavetek 23 Oscilloscope Tektronix 475 Elle 575B 578B Test Setup 1 SYNTHESIZED FUNCTION GENERATOR OSCILLOSCOPE 575B 578B COUNT
42. ed Frequency Capability Option 06 has been selected 578B only 3 2 3 OPERATION BAND 1 BAND 4 REMOTE SENSOR BAND 3 1 GHz 26 5 GHz BAND 2 10 MHz 1 GHz G DA TO BAND 3 4 50 OHM Figure 3 3 Signal Input Connectors Model 578B SIGNAL INPUT BAND 1 input connector BNC female has a nominal input impedance of 1 MQ shunted by 20 pF It is used for measurements in the range of 10 Hz to 100 MHz e BAND 2 input connector BNC female has a nominal input impedance of 50 2 It is used for measurements in the range of 10 MHz to 1 GHz BAND 3 input connector precision type N female for the Model 575B APC 3 5 female for Model 578B has a nominal input impedance of 50 It is used for measurements in the range of 1 GHz to 20 GHz 26 5 for Model 578B BAND 4 Option 06 Model 578B only is a Selectro quick connect connector with a nominal input impedance of 50 It is used for measurements in the range of 26 5 GHz to 110 GHz This input is used in conjunction with the Model 590 Frequency Extension Cable Kit and a remote sensor BAND3 SENSOR BAND 4 J114 A IEEE STD 488 1978 SH1 AHI T5 LA SRI RL1 DC1 DT1 J113 B 50 OHM LL TO BAND Figure 3 4 Rear Panel HE IP ss REAR PANEL CONTROLS AND CONNECTORS Spaces labeled BAND 1 BAND 2 BAND 3 BAND 4 and TO RMT SENSOR are used on instruments eguipped with Option 09 Rear Panel Input TIME BASE ADJUST contro
43. esolution Selection 3 6 S Safety iv Service Information 2 4 Shipping Instructions 2 4 Signal Input 3 3 Signal Measurements 3 21 Source Locking 3 22 Source Locking Functions 3 11 Source Locking Setup 5 2 Specifications 1 2 Status Display 3 2 Storage 2 1 Store Key 3 14 INDEX Continued T Test Functions 3 17 Test Selections 3 17 U Units MHz GHz Keys 3 5 Unpacking and Initial Inspection 2 1 V Ventilation 2 1 Voltage Selection 2 2 W Warranty iii 1 4
44. est sample rate is attained The counter will not go into the Fast Active mode of operation if Hold Active is enabled FP Fast Passive Terminates FA RS Reset Basic Counter and Converter Reacquires input signal and takes a new reading Has the same function as manual reset button HA Hold Active The counter stops taking readings and the last frequency and power readings are displayed and held The counter can be directed to take one reading when it is in this mode by sending Device Trigger or Selected Device Trigger GPIB bus command to the counter It will also update the reading if the RS mnemonic is received HP Hold Passive Terminates HA DATA MANIPULATION FUNCTIONS FO Frequency Offset Enables entry of frequency offsets 1 Hz resolution available A new gate will be initiated after data entry if counter is not in HOLD PO Power Offset See Option 02 OA Offset Active Add frequency offset to frequency readings Add power offset to power readings if power meter function is active OP Offset Passive Does not add frequency and power offset to readings ML Multiplier Enables entry of a 2 digit frequency readings multiplier The multiplier must be an integer between OO and 99 The results are to 1 kHz resolution A new reading will be initiated after the data entry if che counter is not in HOLD If the results of the multiplications are larger than or equal to 999 999 999 000 GHz the counter will output 99
45. face function subsets implemented are as follows Interface Function Source Handshake Acceptor Handshake Talker Listener Service Request Remote Local Device Clear Device Trigger REMOTE LOCAL FUNCTION complete capability complete capability basic talker serial poll Talk only mode unaddress if MLA basic listener Listen Only mode unaddress if MTA complete capability complete capability complete capability complete capability When the counter changes from LOCAL to REMOTE or vice versa all the stored information is retained The counter will operate in the same state as it was before the change The only exception is when the counter is in the TEST mode the TEST function is automatically terminated When the counter is in REMOTE and LOCAL LOCKOUT is not active the RESET key on the front panel keyboard acts as the return to local key 44 EP zs DEVICE CLEAR FUNCTION When the GPIB command DEVICE CLEAR or SELECTED DEVICE CLEAR is received the counter will revert to its power on state as listed below Display Active Band 3 Selected Resolution 0 Fast Passive Offset Active Offset set to 0 Power Meter Passive Frequency Limit High set to default Frequency Limit Low set to default Coarse Tune Active Test Passive Clear Test Functions Exponent Zero Output Format Service Request Passive DEVICE TRIGGER FUNCTION When the GPIB bus command DEVICE TRIGGE
46. hin 5 MHz of the desired frequency Then the phase lock process takes over to attempt to close the phase lock loop In this mode the counter will perform properly even if the coarse tune output of the counter is not connected to the signal source CP Coarse tune passive Source lock process bypasses the coarse tune process for faster source lock time This mode can be used if the source s output is close to the desired frequency DATA FORMAT EZ Exponent Zero output format ES Exponent Scientific output format DATA OUTPUT BR Output both frequency and power readings See section on output data format ER Output frequency readings only See section on output data format PR Output power readings only See section on output data format DAC OPTION DC Enables the DAC option Enter DC followed by two decimal digits which correspond to the location of the most significant digit in the three digits desired To turn the DAC option off input or DCP turns DAC option off DCO02 selects 1 Hz digit thru DC12 selects 100 10 and 1 GHz digits SERVICE REQUEST SR Service Request Enable Enables the counter to send Service Request to the bus when a certain event has taken place in the counter To enable the function input SR followed by two decimal digits The two digits are the decimal equivalent of the content of the eight bit status register More than one bit of the status register can b
47. ime lt s Remote Band Freguency Waveguide Waveguide Power Damage Sensor Range Size Flange dm Level dBm WR 28 UG 599 U 25 20 to 5 WR 19 UG 383 U 25 to 45 WR 12 UG 387 U 25 to 5 WR 10 UG 387 U 25 to 5 WR 15 UG 385 U 25 to 5 WR 22 UG 383 U 25 to 5 K Connector N A 25 to 5 K Connector is a registered trademark of the Wiltron Corporation Option 09 Rear Panel Input Connectors Band 1 Connector BNC female Band 2 Connector BNC female Band 3 Connector Precision Type N female Model 575B APC 3 5 female Model 578B Elle 575B 578B OPTIONS AND ACCESSORIES OPTIONS DESCRIPTION 01 DAC Output 02 Power Measurement 05 SC cut Ovenized High Stability Timebase Aging Rate 5 x 10 day 06 Band 4 Frequency Extension Module Available on Model 578B only Required for frequencies between 26 5 GHz and 110 GHz Frequency Extension Cable Kit 590 and remote sensor are also required 09 Rear Input Configuration 10 Chassis Slides ACCESSORIES DESCRIPTION 590 Frequency Extension Cable Kit 091 Remote Sensor 26 5 40 GHz 092 Remote Sensor 40 60 GHz 093 Remote Sensor 60 9 GHz 094 Remote Sensor 90 110 GHz 095 Remote Sensor 50 75 GHz 096 Remote Sensor 33 50 GHz 097 Remote Sensor 26 5 50 GHz The accessories listed above are used in conjunction with Model 578B and require Option 06 010 Transit Case 020 Rack Mount Kit 031 Operation Manual one supplied with each instrument 032 Service Manu
48. ine Variation Warm up Time Output Frequency Ext Timebase Phase Noise 10 MHz 1 x 107 per month 1 x 10 per yea lt 1 x 10 rms for one second averaging time lt 1 x 10 0 to 50 C when set at 25 C 1 x 10 10 change 30 minutes 10 MHz square wave 1 V p p minimum into 50 Q Requires 10 MHz 1 V p p minimum into 300 Q 95 dBc Hz at 10 Hz from carrier EP sus Source Lock Frequency Range 10 MHz to maximum capability of counter Resolution 10 kHz for phase lock frequency gt 50 MHz 2 5 kHz for phase lock frequency 50 MHz Accuracy Equal to counter s timebase Long Term Stability Equal to counter s timebase Min Phase Lock Signal Level Equal to counter s sensitivity Polarity Automatically selected Bandwidth User selectable 10 kHz 2 kHz or 500 Hz or automatically selects widest bandwidth capable of locking Lock Time Typ Coarse Tune 50 ms 1 counter acquisition time for source bandwidth greater than 100 Hz Limited by source tuning speed below 100 Hz Phase Lock 20 ms Recalling Stored Data counter acquisition 100 ms limited by source tuning speed Output Drive Max Coarse Tune Output 10 V into 5KQ min Phase Lock Output Voltage Driven 10 V into 5KQ min for source gain constant lt 64 MHz V 6 V into 5KQ min for source gain constant 264 MHz V NOISE dB Ne N liii NI MON RU MN 1 kHz MODULATION FREQUENCY SINEWAVE 1 4 I GENERAL INFORMATION Source Lock Con
49. it should respond to the interrupt 3 Tell the controller what to do when it receives an SRQ interrupt 4 Serial Poll the counter after an SRQ is generated to clear the interrupt When the counter generates an SRO it sets bit 6 in the status byte Serial polling the instrument clears the SRQ bit and allows the instrument to generate a new SRQ upon the next occurrence of the conditions specified in the SRO Mask 5 It may also be necessary to clear the SRQ register in the controller Consult your manual on the controller for more information on clearing the SRO register in the controller 4 10 The following program written on a HP 9826 demonstrates how to use the SRO feature to obtain a valid measurement from the counter 10 ASSIGN COUNTER TO 719 20 REMOTE COUNTER 30 OUTPUT COUNTER SROI 40 ENABLE INTR 7 2 50 ON INTER 7 GOTO FLAG 60 WAITING Assigns 719 to address variable The number 7 is the GPIB interface and 19 is the counters GPIB address Place counter in Remote Send SRO mask to counter Enable interrupt in controller Tell controller how to handle interrupt Label 10 PRINT WAITING FOR VALID MEASUREMENT 80 GOTO WAITING 90 FLAG PRINT SRO RECEIVED 100 ENTER COUNTER FREQ 110 PRINT FREQ FREO 120 S2 SPOLL COUNTER 130 STATUS 7 45 140 OUTPUT GCOUNTER SRO0 150 OFF INTR 7 160 END Input Frequency from counter Print Frequency Clea
50. l is used with options 03 04 or 05 only Screwdriver adjustment allows precise setting of the internal oven oscillator TIME BASE INT EXT switch selects either the internal time base or an external 10 MHz reference TIME BASE connector BNC female allows monitoring of internal 10 MHz time base or input of an external 10 MHz reference DAC OUT connector BNC female provides an analog voltage proportional to any specified three digits of frequency displayed in instruments equipped with Option 01 Digital to Analog Converter G P I B connector is used for remote operation with the IEEE 488 1978 General Purpose Interface Bus LOCK OUT connector BNC female provides control signal for phase locking an electrically tunable signal source COARSE TUNE OUT connector BNC female provides control signal for coarse tuning an electrically tunable signal F1 fuse provides current overload protection V A C switch sets the operating voltage of the counter to match power line voltage CAUTION N Switch setting and fuse rating must match power line voltage Refer to Installation Section for more information AC power connector accepts the power cord supplied with the counter INSTRUMENT DEFAULT SETTINGS When the counter is initially turned on the state of the counter is determined by a set of default values which are stored in memory The factory set values are listed below Parameter Default Value Band
51. largest signal present This is accomplished by setting frequency limits around the desired signal Figure 3 6 shows an example of the frequency limits feature INPUT POWER dBm 20 FREQUENCY FREQUENCY LIMITLOW E LIMIT HIGH z6 2GHz E 6 4 GHz 10 20 30 FREQUENCY GHz 5 6 63 6 6 7 DISPLAYED FREQUENCY Figure 3 6 Frequency Limits 3 21 EP If the signals shown in Figure 3 6 are applied to Band 3 of the counter it will automatically find the signal at 6 GHz since it is the largest signal If it is desired to measure the signal at 6 3 GHz set the low frequency limit at 6 2 GHz and the high frequency limit to 6 4 GHz This will prevent the counter from seeing either the signal at 6 GHz or the signal at 6 6 GHz SOURCE LOCKING The EIP 575B and 578B Source Locking Microwave Frequency Counters offer the capability of source locking the frequency on almost any electronically tunable signal source over a frequency range from 10 MHz to 110 GHz Typical applications involve source locking the output from a microwave sweeper such as one of the Wiltron 6600 Series of Sweep Generators Regardless of the particular sweeper the technique is basically the same A sample of the signal to be controlled is applied to the appropriate band on the counter The COURSE TUNE OUTPUT from the counter is applied to the external sweep input to the sweeper and the LOCK OUTPUT from the counter is applied to the F
52. led Note that the stored phase lock frequency is displayed to a resolution of 100 Hz and is followed by the storage register number O LOCK PRESS phase lock to the recalled frequency Note if the recalled frequency is outside the frequency range of the current band the phase lock frequency register will not be altered GPIB Example Enter OUTPUT 719 RC2L to phase lock to the frequency stored in register 2 To Clear a Stored Phase Lock Frequency Keyboard Examples RCL PRESS C to display the word rcl Notice flashing annunciator PRESS the corresponding number key to display stored phase lock frequency to 100 Hz resolution followed by the storage register number DATA PRESS sa to clear the stored phase lock frequency DAC DESCRIPTION The DAC key provides control of the optional Option 01 digital to analog converter This key is used to select three consecutive display digits The selected digits are converted to an analog voltage between O and 999 volts and applied to the rear panel connector The output voltage corresponds to the numeric display substituting zeros for any non numeric characters that appear The output will be updated after every display update 3 15 KEYBOARD OPERATION To enable the DAC Digital to Analog Converter press the DAC key followed by two digits 01 12 The number keyed in will select the most significant digit Keyboard Examples DAC PRESS C
53. limits offsets DAC CLEAR multiplier bandwidth lock frequency and stored phase lock information CLEAR PRESS to clear display Does not affect stored data Restores counter to display DISPLAY measurement Clears entry if counter is in data entry mode 3 5 E lie 575B 578B COUNTER CONTROL FUNCTIONS BAND SELECTION The BAND key followed by a numeric key selects the desired band Keyboard Examples BAND PRESS za to select Band 1 BAND PRESS 2 to select Band 2 BAND PRESS C to select Band 3 GPIB Examples Enter OUTPUT 719 B1 to select Band 1 Enter OUTPUT 719 B2 to select Band 2 Enter OUTPUT 719 B3 to select Band 3 On the Model 578B equipped with Option 06 four additional frequency bands may be selected Band 41 thru 44 Keyboard Examples BAND PRESS C 4 where X is a number between 1 and 4 BAND PRESS 2 toselect Band 42 GPIB Examples Enter OUTPUT 719 41 to select Band 41 Enter OUTPUT 719 44 to select Band 44 RESOLUTION GATE TIME SELECTION The RES key followed by a numeric key between O and 9 set the least significant digit of the display as a power of 10 thereby selecting measurement resolutions from 1 Hz to 1 GHz Since the gate time is determined by the selected resolution this key also indirectly selects the gate time 3 6 3 OPERATION Keyboard Examples RES PRESS C to select a 1 Hz resolution 1 second g
54. luded at the end of this section If the test application is especially critical in nature more extensive testing of the counter may be required See the performance verification test section in the service manual Because of the high cost and specialized nature of frequency sources above 40 GHz testing above this frequency is not covered Also for the purpose of operational verification tests simulated pulsed signals are used in Bands 1 and 3 EQUIPMENT REQUIREMENTS Equipment required for the operational verification tests on the EIP 575B or 578B counter is listed in Table 5 1 The critical parameters are the minimum use specifications required for the performance of the procedures and are included to assist in the selection of alternative equipment Satisfactory performance of alternative items should be verified prior to use All applicable equipment must bear evidence of current calibration For some of the following tests an EIP 578B counter is used to source lock the microwave sweeper thus providing a stable source for testing This combination may be replaced by a frequency synthesizer 5 1 575B 578B Table 5 1 Equipment Requirements Critical Recommended Description Parameters Manufacturer Model Synthesized Function 10 Hz to 10 MHz Wavetek 23 Generator Sweep Generator 10 MHz to 26 5 GHz 40 GHz Wiltron 6668A for Option 06 Sweep Generator 3 GHz to 18 GHz Wiltron 6635A Source Locking Counter 10 MHz to 26 5 GHz EIP 578B S
55. o Input Frequency Offsets 9 UAR oe edo UR Rope Ede os 3 9 To Display stored ean RR e qe A OS SUR 3 10 To Clear Frequency Offsets a oput dE Rn Bee AA 3 10 Multiply Function EG Soest RUE A e sp E 3 10 To Enter MHWLEBpligE sas x nde qp ue Arras e o da a 3 10 To Display Mul pli t ega ra 8 1400 EC Ew 4 33 3 11 To Clear Maltipher sa ace ies dad ee AAC A Sl 3 11 o DEME APA AAA Ma tor qos 3 11 Source Locking Functions ao ei AA ROLLE a 3 11 Phase Lock Frequentes odo ai we AA 3 11 To Enter Phase Lock Frequency 3 12 To Display Phase Lock Frequency 3 12 To Clear Phase Lock Frequency ood Gee dd 3 12 Phase LOCK sra d a a 3 13 Bandwidth sra 90 S Ee Oe 30 10 184 aw ee ee 4 3 13 To Display Stored Bandwidth 3 14 SO E ARA 3 14 a at o ds de rad r a tatoo Ba 3 14 To Display a Stored Phase Lock Frequency 3 15 To Phase Lock to a Stored Phase Lock Frequency 3 15 To Clear a Stored Phase Lock Frequency 3 15 DAG neos rare aa ds Bu 3 15 TABLE OF CONTENTS TABLE OF CONTENTS Continued SECTION 3 OPERATION Continued Baro EE A 3 15 Keyboard si da S i ADAE oe 3 16 Power METE e voce quacuor ava d ub oe ande e eoe DD HUE SRI E 3 16 IOesCHDEI
56. on 3 6 Bandwidth Key 3 13 C Certification iii Clear Data Clear Display Keys 3 5 Connectors 3 1 3 4 Counter Control Functions 3 6 Counter Error Messages 3 24 Counter Identification 2 4 Customer Suggestion Form iii D DAC Key 3 15 Data Manipulation Functions 3 9 Declaration of Conformity 1 9 INDEX Continued E Error Messages 3 24 Exit Tests 3 20 F Factory Service 2 4 Frequency Limits 3 8 Frequency Offset 3 9 Front Panel Controls Connectors and Indicators 3 1 Fuse Replacement 2 2 G Gate Time Selection 3 6 I Identification 2 4 Incoming Operational Checkout 2 3 Indicators 3 1 Inspection 2 1 Installation 2 2 Instrument Default Settings 3 4 K Keyboard 3 5 M Manual Change Information iii Measurements 3 21 3 23 Messages 3 24 Millimeter wave Measurements 3 23 Multiple Signal Measurements 3 21 Multiply Function 3 10 Mutually Exclusive Functions 3 21 mX B 3 11 I 2 INDEX Continued O Operating Conditions 2 1 Operational Test Record 5 9 Operational Verification Test Procedures 5 3 Operational Verification Tests 5 1 Operator Error Messages 3 24 Options 3 23 Options and Accessories 1 8 P Periodic Maintenance 2 4 Phase Lock Frequency 3 11 Phase Lock Key 3 13 Power Meter Keys 3 16 Power on Tests 3 17 Preparation for Use 2 2 R RCL Key 3 14 Rear Panel Controls and Connectors 3 4 Recall Key 3 14 Reset Local Key 3 5 R
57. or will continue to flash until the function is manually terminated BANDWIDTH The B W key followed by a numeric key selects the phase lock loop bandwidth as follows Keyboard Examples B W PRESS ey to select a 500 Hz loop bandwidth B W PRESS 2 to select 2 kHz loop bandwidth B W press 3 toselecta 10 kHz loop bandwidth B W PRESS C to automatically select loop bandwidth Bandwidth O enables the counter to automatically select the phase lock loop bandwidth When BWO is selected the counter during the phase lock process will try to close the phase lock loop in the 10 kHz 2 kHz and 500 Hz bandwidth sequentially It will select the first bandwidth in which it can hold phase lock GPIB Examples Enter OUTPUT 719 BW1 to select a 500 Hz loop bandwidth Enter OUTPUT 719 BW3 to select a 10 kHz loop bandwidth 3 13 To Display Stored Bandwidth 575B 578B Keyboard Examples B W PRESS display last selected bandwidth number followed by the bandwidth Hz Notice flashing annunciator CLEAR PRESS C to clear the display without changing stored setting DISPLAY STORE The STORE key stores the current phase lock frequency in a selected register This function can be activated only after the counter has been phase locked An error will occur if the function is activated when the counter is not phase locked The STORE function reduces the time required to phase lo
58. owing is a list of the address settings for entering these modes Address Mode of Operation 32 Continuous output determined by SAMPLE RATE control Exponent in scientific format 33 Continuous output fast active SAMPLE RATE control inactive Exponent in scientific format 34 Continuous output determined by SAMPLE RATE control Exponent in zero output format 35 output fast active SAMPLE RATE control inactive Exponent in zero output NOTE In the Talk Only or the Listen Only mode the address of the counter is always automatically set to decimal 0 GPIB INSTRUCTION FORMAT lt OP CODE gt lt NUMBER gt lt TERMINATOR gt OPERATION CODE or OP CODE can take any of the following formats lt LETTER gt lt LETTER gt or lt LETTER gt lt DIGIT gt Example FH Frequency Limit High or B3 Band 3 The NUMBER portion of the statement can take the form of any of the following lt SIGN gt lt DIGIT STRING gt Example 2457 SIGN DIGIT STRING DIGIT STRING Example 3 483 NOTE Spaces within the OP CODE and NUMBER portions of the instructions are always ignored The TERMINATOR allows the operator to choose the scale of an input number as well as implement special functions TERMINATOR G M K H D P C L G M K H represent GHz MHz kHz and Hz respectively D dB P clear data equivalent to clear data key on keyboard C clear display equivalent to clear display key on keyboard L
59. pectrum Analyzer 3 GHz to 18 GHz Hewlett Packard 8566A Power Meter 10 MHz to 60 GHz Hewlett Packard 437B Power Sensor 10 MHz to 18 GHz Hewlett Packard 8481A 20 to 10 dBm Power Sensor 100 MHz to 26 5 GHz Hewlett Packard 8485A 25 to 20 dBm Power Sensor 26 5 GHz to 40 GHz Hewlett Packard R8486A 25 to 20 dBm Oscilloscope DC to 100 MHz Tektronix 475 Power Splitter 10 MHz to 26 5 GHz Hewlett Packard 11667B Directional Coupler 950 MHz to 18 GHz Narda 4222 16 Directional Coupler 18 GHz to 26 5 GHz Narda oo 0 Remote Sensor 26 5 GHz to 40 GHz EIP 091 50 Q Termination Pamona 4119 50 SOURCE LOCKING SETUP In some of the following tests the EIP 578B counter is used to source lock the sweep generator to provide a stable frequency source for testing the 575B 578B counters The source locking setup described below is not limited to locking the Wiltron sweeper It can be used to source lock almost any electronically tunable signal source over a frequency range of 10 MHz to 110 GHz For more information on source locking the Wiltron 6600 series of sweep generators request Application Bulletin 10 from our sales representative in your area or directly from EIP Regardless of the particular sweeper the procedure for source locking is basically the same A sample of the output from the sweeper is applied to the appropriate band on the EIP 578B counter For the setup shown in Figure 5 1 a power splitter provides the sample The COARSE TUNE OUT conn
60. power line for operation PREPARATION FOR USE VOLTAGE SELECTION CAUTION N Disconnect ac power cord before changing voltage selection switch The voltage select switch should be set to the proper line voltage See Figure 2 1 To change the line voltage proceed as follows 1 Disconnect the counter from the power line 2 Using a screwdriver turn the slotted voltage indicator to the desired position FUSE REPLACEMENT WARNING AN Disconnect ac power cord before replacing fuse The fuse for the counter is located on the rear panel above the line voltage socket The type of fuse used in your counter depends upon the primary power as follows Line Voltage Fuse Type 100 120 Vac 1 5 A Slow blow MDL 200 220 Vac 0 8 A Slow blow FST To release the fuse use a screwdriver to rotate the slotted cap counterclockwise To reinstall the fuse press the fuse and slotted cap assembly into the fuse cavity and turn cap clockwise until it locks into place CAUTION To avoid damage to the counter always be sure that the fuse used is the type and value specified and that the voltage select switch E is set to correspond to the ac power input voltage See Figure 2 1 2 2 2 INSTALLATION 100 120 VAC 1 5A SB 220 240 VAC 80A SB V A C 50 60 Hz Figure 2 1 Rear Panel Fuse and Voltage Select Locations INCOMING OPERATIONAL CHECKOUT The following tests are designed to provide a basic operational check of
61. products changes to the material covered by the manual will occur When a part or assembly in a Phase Matrix Inc instrument is change to the extent that it is no longer interchangeable with the earlier part the configuration control number CCN of the instrument shown on the title page of the manual will change and a new edition of the manual will be published To maintain the technical accuracy of the manual it may be necessary to provide new or additional information with the manual In these cases the manual 1s shipped with a Manual update Please be sute to incorporate the information as instructed in the Manual update 111 EIP 575B 578B SAFETY The Phase Matrix Inc Models 575B amp 578B are designed and tested according to international safety requirements but as with all electronic equipment certain precautions must be observed This manual contains information cautions and warnings that must be followed to prevent the possibility of personal injury and or damage to the instrument SAFETY AND HAZARD SYMBOLS WARNING 2222 A WARNING denotes a hazard to personnel It calls attention to a procedure or practice which if not correctly performed or adhered to could result in personal injury CAUTION A z _A _ A CAUTION denotes a hazard to the equipment It calls attention to an operating procedure or practice which if not correctly performed or adhered to could result in damage to o
62. quency register BW Bandwidth Enables the selection of the phase lock loop bandwidth To select the desired bandwidth input BW followed by one decimal digit The digit has to be between O and 3 inclusively BWO automatic loop bandwidth selection BW1 500 Hz loop bandwidth BW2 2 kHz loop bandwidth BW3 10 kHz loop bandwidth In BWO the counter will try to close the phase lock loop in 10 kHz 2 kHz and 500 Hz loop bandwidths sequentially It will select the first bandwidth in which it is able to close the phase lock loop ST Store Enables the storage of the current phase lock frequency along with other important information related to phase locking that frequency To store the current phase lock frequency input ST followed by one decimal digit between 1 and 9 inclusively The function can be activated only after the counter has been phase locked RC Recall Enables the recall of che information in one of the storage registers Inputting RC followed by one decimal digit between 1 and 9 inclusively and terminating the string by the terminator L enables the counter to attempt to phase lock to the frequency stored in 4 8 5 C E 4 PROGRAMMING one of the storage registers Terminating the string by the terminator P will clear that storage register CA Coarse tune active Source lock process operates normally The counter first goes through the coarse tune process to move the signal source s output to wit
63. r SRQ bit in counter Clear SRQ bit in controller Turn off SRQ mask in counter Turn off interrupt in controller Program end To demonstrate this program set up counter with no signal applied and start the program running The Controller should continually print out Waiting for measurement Then apply a signal As soon as the Counter finds the signal and counts it the controller will print out the frequency of the signal DATA OUTPUT FORMAT To output measurement results the 575B 578B transmits the following string of characters Position 1234567891011 12 13 14 15 16 17 18 Format EZ Exponent Zero Pt DDDDDDDDDDDDEOCRLE ES Exponent SCI DDDDDDDDDDDDDEDCRLE Power bbbbbbbbbbiDDD DCR LE Freq Power FREQ in EZ mode btDDDDDDDDDDDDEO bkbbbbbbbbtDD D D CR LF FREQ in ES mode tDDDDDDDDDDDDDED bbbbbbbbbbtDD D D CR LF 4 11 Elle 575B 578B When the counter is in Test 05 08 09 or 10 the output will reflect the data on the display The format is as follows X XXXXXXXXXXXXCRLF b Blank D Digit X Alpha numeric Character CR Carriage Return LF Line Feed In Exponent scientific one digit represents the position of the decimal point Exponent digit can be either O 3 6 9 For power data the output resolution is fixed at 0 1 dB Under different output modes the following counter outputs can be expected by a listener Counter Output Operating Mode Mode Output BR PA F
64. r destruction of part or all of the product T his is a general warning that appears whenever care is necessary to prevent damage to the equipment D angerous V oltage Toxic Substance Static Sensitive Component Fire Hazard gt gt G gt gt IE TLF 575B 578B OVERALL SAFETY CONSIDERATIONS MA A A A A WARNING Before this instrument is switched on it s protective earth terminals must be connected to the AC power cord s protective conductor The main plug must only be inserted in a socket outlet that has a protective earth contact The protective action must not be negated by using an extension cord power cable or adapter that does not have a protective earth grounding conductor WARNING Use only fuses of the type specified with the required current and voltage ratings N ever use repaired fuses or short circuited fuse holders as doing so causes shock and or fire hazard WARNING Whenever it is likely that electrical protection is impaired the instrument must be made inoperative and be secured against any unintended operation WARNING All protective earth terminals extension cords autotransformers and other devices connected to this instrument must be connected to a socket outlet that has a protective earth contact Any interruption of the protection causes a potential shock hazard that can result in personal injury WARNING The power supply is energized whenever AC power is connected to
65. r is identified by three sets of numbers the model number 575B or 578B serial number and a configuration control number CCN They are located on a label affixed to the frame at the rear of the counter These numbers must be included in any correspondence regarding your counter FACTORY SERVICE If the counter is being returned to EIP for service or repair be sure to include the following information with the shipment e Name and address of owner e Model number serial number and configuration control number of the Counter listed on the rear panel of the counter e A complete description of the problem E g under what conditions did the problem occur What was the signal level What eguipment was attached or connected to the counter Did that eguipment experience failure symptoms e Name and telephone number of someone familiar with the problem who may be contacted by EIP for any further information if necessary e Shipping address to which the counter is to be returned Include any special shipping instructions Pack the counter for shipping as detailed below SHIPPING INSTRUCTIONS Wrap the counter in heavy plastic or kraft paper and repack in original container if available If the original container cannot be used use a heavy 275 pound test double walled carton with approximately four inches of packing material between the counter and the inner carton Seal carton with strong filament tape or strapping Mark the car
66. r the cushioning material shows signs of stress notify the carrier as well as EIP Keep the shipping materials for carrier s inspection EIP will arrange for repair or replacement of the instrument without waiting for claim settlement SIORAGE Store the instrument in an environment that is protected from moisture dust and other contaminants Do not expose the instrument to temperatures below 55 C or above 75 C nor to altitudes above 40 000 ft 12 000 m OPERATING CONDITIONS This instrument is designed to be operated at temperature not exceeding O to 50 C at relative humidity not to exceed 95 75 over 25 45 over 40 This instrument will perform to specifications at altitudes not exceeding 10 000 ft 3050 m and will tolerate vibration not exceeding 2 g It is fungus resistant The chassis is not designed to provide protection from mechanical shock or falling water particles and is intended for normal bench use in an environmentally clean area VENTILATION Air circulates through the vents in the rear panel of the counter These vents must not be obstructed or the temperature inside the counter may increase enough to reduce counter stability and shorten component life 2 1 EP INSTALLATION There are no special installation instructions for the EIP 575B or 578B frequency counter These units are self contained bench or rack mounted instruments that only require connection to a standard single phase
67. ress is RAM or I O can change its contents The desired address is entered as a 4 digit hexadecimal number When the 4th digit is entered the counter displays the contents of the entered address The contents can then be changed by entering a two digit hexadecimal number NOTE Access to this test is controlled by an internal memory protect switch Attempting to access this test without switching the memory protect switch will cause the counter to generate an error message TEST 90 Display and or Alter GPIB Address When this function is activated the counter displays the current address of the GPIB interface If the address does not need to be changed the function can then be terminated by pressing the CLEAR DISPLAY key After this function has been activated the GPIB address can then be changed by entering a two digit number between 01 and 99 inclusive TEST PRESS C to activate this test PRESS 1 to set the GPIB address to 19 CLEAR PRESS C to exit the test DISPLAY TEST 91 YIG DAC Automatic Calibration This function is used to calibrate the Band 3 input filter Refer to the service manual for complete information NOTE Access to this test is controlled by an internal memory protect switch Attempting to access this test without switching the memory protect switch will cause the counter to generate an error message TO EXIT TESTS CLEAR PRESS C to exit a test an
68. st Passive clear test function DATA FORMAT EZ Exponent Zero ES Exponent Scientific DATA OUTPUT BR Output both frequency and power readings FR Output frequency readings only PR Output power readings only SERVICE REQUEST SR Service request enable DAC OPTION DC Select DAC option DESCRIPTION OF AVAILABLE COMMANDS DISPLAY DA Display Active Outputs readings to both front panel and GPIB bus DP Display Passive Outputs readings to GPIB bus only It will decrease the cycle time of the counter DN Display Normal Resets display only used for clearing error messages on the display Cannot be used after verifying preprogrammed data such as Frequency Offsets or Frequency Limits This OPCODE affects only the display BAND B1 Selects Band 1 B2 Selects Band 2 B3 Selects Band 3 B41 Selects Band 41 See Option 06 B42 Selects Band 42 See Option 06 B43 Selects Band 43 See Option 06 B44 Selects Band 44 See Option 06 IN ME OM REN me 4 PROGRAMMING RESOLUTION R 1 thru R9 Resolution 1 thru 9 Picks the front panel resolution from 1 Hz to 1 GHz Also chooses gate time which is related to resolution 1 Hz 10 sec 1 Hz 1 sec 10 Hz 100 msec 100 Hz 10 msec and 1 kHz to 1 GHz 1 msec MEASUREMENT FUNCTIONS FA Fast Active Causes the counter to go into the fast cycle mode of operation In this mode the front panel sample rate hold control is inactive and the fast
69. ter Equipment Sweep generator Wiltron 6668A Source locking counter EIP 578B Power meter Hewlett Packard 437B Power sensor Hewlett Packard 8485B Power splitter Hewlett Packard 11667B Source Locking Setup See Figure 5 1 578B COUNTER COURSE OUTPUT POWER METER EXTERNAL SWEEP 575B 578B COUNTER INPUT POWER POWER SPLITTER SENSOR Figure 5 5 Band 3 Range and Sensitivity Test Setup 5 6 Procedure Connect equipment as shown in Figure 5 5 Set the counter to Band 3 and select resolution 3 Using the EIP 578B counter source lock the sweeper at 1 GHz Using the power meter set the output signal level from the sweeper to 30 dBm Apply the 1 GHz signal to the 575B 578B counter verify proper reading and record the results 6 Repeat steps 3 4 and 5 at 3 GHz 6 GHz 10 GHz and 12 4 GHz Then at a signal level of 25 dBm test at 15 GHz 18 GHz and 20 GHz For Model 578B counters only at signal level of 20 dBm test also at 22 GHz 24 GHz and 26 5 GHz NAS tS or BAND 3 AMPLITUDE DISCRIMINATION TEST Description This test verifies that the counter will measure accurately the larger of two signals differing in amplitude by 10 dB or more Equipment Sweep generator Wiltron 6635A Sweep generator Wiltron 6668A Spectrum analyzer Hewlett Packard 8566A Power splitter Hewlett Packard 11667B 575B 578B COUNTER S COMBINER SWEEP GENERATOR 2
70. this instrument Disconnect the AC power cord before removing the covers to prevent electrical shock Intemal adjustments or servicing that must be done with the AC power cord connected must be performed only by qualified personnel EIP 575B 578B gt gt P GE gt D Since the power supply filter capacitors may remain charged after the AC power cord is disconnected from the equipment disconnecting the power cord does not ensure that there is no electrical shock hazard WARNING Some of the components used in this instrument contain resins and other chemicals that give off toxic fumes if burned Be sure to dispose of these items properly WARNING Beryllia beryllium oxide is used in the construction of the assembly This material if handled incorrectly can pose a health hazard NEVER disassemble the microwave counter assembly CAUTION LL L Static sensitive components are used in the Assembly These components can be damaged if handled incorrectly CAUTION Before connecting power to the instrument ensure that the correct fuse is installed and the voltage selection switch on the instrument s rear panel is set properly Refer to INSTALLATION Section 2 Installation CAUTION Excessive signal levels can damage this instrument To prevent damage do not exceed the specified damage level Refer to the instrument specifications in
71. tinued Current Driven 75 MA into 10 2 max for source gain constant 3 2 MHzMA 4 5 MA into 10 max for source gain constant 23 2 MHz MA Capture Range Coarse Tune Entire range of selected counter band limited by maximum output drive Phase Lock Source gain constant X maximum output drive Output Connector Rear panel BNC female Phase Locked Spectrum Noise Floor vs Input Frequency The noise floor extends from the carrier to approximately the loop bandwidth Beyond this the noise floor decreases 12 dB bandwidth octave The noise floor is the greater of 1 NOISE FLOOR 70 dBc Hz 2 NOISE FLOOR 20 log F 6 dBc Hz where F input frequency in GHz MODULATION AMPLITUDE RU T FOES ji 1 ira 10 Hz 100 Hz 1 kHz 10 kHz IH HT 29 Sa Da a AHHH ff sf iL O M Sis SINUSOIDAL MODULATION FREQUENCY Hz 1 5 EP Source Lock Continued Source Characteristics required Coarse Tune Input Bandwidth Tuning Sensitivity Phase Lock FM Input Bandwidth Tuning Sensitivity Voltage Driven Input Current Driven Input Maximum FM 5 Hz minimum 10 MHz V minimum 10 GHz V maximum 2 kHz minimum 2 MHz V minimum 11000 MHz V maximum 0 1 MHz mA minimum 450 MHz mA maximum The counter will still frequency stabilize if maximum FM is exceeded but accuracy and long term stability will not equal the counter s time base Option O1
72. ton to indicate that it contains a fragile electronic instrument Ship to EIP Microwave Inc at the address shown an the front cover 2 4 3 OPERATION OPERATION INTRODUCTION This section lists che counter controls connectors and indicators explains how each counter function operates and provides some general measurement considerations EXT REF FROLMT dim DAC LOW HI LCK BW OFFSET FRQ PWR MODEL 5788 SOURCE LOCKING MICROWAVE COUNTER SAMPLE RATE POWER POWER METER 9 0 IL saje SEARCH Figure 3 1 Front Panel Model 578 FRONT PANEL CONTROLS CONNECTORS AND INDICATORS POWER switch turns counter on SAMPLE RATE HOLD control varies time between measurements from 0 1 to 10 seconds nominal Gate time is added to sample time thus the minimum reading for 1 Hz resolution is 1 1 seconds The last reading is retained indefinitely in HOLD until Reset is issued GATE indicator lights when the signal gate is open and a measurement is being made SEARCH indicator lights when the counter is not locked to an input signal Data display The 12 digit LED display provides a direct numerical readout of a measurement or of an input frequency The frequency readout is displayed in a fixed position format that is sectionalized in GHz MHz kHz and Hz Power information is displayed in dBm to 0 1 dB 3 1 Elle 575B 578B resolution
73. ts all segments of each digit and its decimal point simultaneously The test cycles through all digits and annunciators The cycle rate is determined by the sample rate control It is used to check each digit and digit driver independently and verifies operation of the display multiplexer TEST PRESS C C to activate this test TEST 05 Keyboard Test This function is used to verify the operation of the keyboard After this function is activated the counter stops normal operation The display shows the key code of the last key pressed When a new key is pressed the display is updated to show the code of the the new key When the GPIB controller requests a key code the code of the last 3 18 3 OPERATION key pressed is output If the controller reguests a key code the counter will output to the GPIB interface the code of the last key pressed even if Special Function 05 is not activated If the counter is in LOCAL this function must be terminated by the CLEAR DISPLAY key If it is in remote this function can be terminated by any device dependent command TEST PRESS 9 5 toactivate this test TEST 06 Converter Ramp Test This test continuously ramps the Band 3 Converter DAC through its range It is used to test the YIG DAC YIG drivers YIG and Band 3 RF level circuits TEST PRESS o 5 to activate this test TEST 07 Sweep VCO Test This test cycles the VCO
74. ut data error checking formatting changing the mode of operation etc To prevent the data rate of the bus from slowing down while the counter is processing input data the data is accepted as soon as it is available on the bus and is temporarily stored in memory The size of the storage memory is 100 characters The users of the GPIB interface need to be aware of the difference between accepting data and complying with it If the counter is asked to output a reading before it has finished processing the input data the output will be in error if the operator makes the assumption that the counter is in the mode that was just programmed To prevent this sufficient programmed delays must be provided or use must be made of the counter s Service Request status byte See Service Request SR command description 4 13 This Page Intentionally Left Blank S OPERATIONAL VERIFICATION TESTS SECTION 5 OPERATIONAL VERIFICATION TESTS INTRODUCTION This section contains test procedures that are used for verifying proper operation of the counter Although these tests are not comprehensive they do insure to a high degree of confidence that the instrument is operating properly The tests can be useful for incoming inspection and should be performed after any servicing to insure proper operation of the counter All tests can be performed without removing the instrument covers A test report form that can be used to provide a test record is inc

EIP Microwave Model 575B & 578B Source Locking

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EIP Microwave Model 575B &amp; 578B Source Locking

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EIP Microwave Model 575B & 578B Source Locking