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HP 8414A User's Manual

1. R VAR R FXD R FXD R FXD R FXD R FXD R FXD R FXD R FXD R FXD R FXD FXD R FXD FXD R FXD R FXD R FXD R FXD R FXD FXD R FXD R FXD R FXD R FXD FLM FLM OHM 0 1 1 8W 348 OHM 1 1 8W 7 50 1 1 8W 42 2K OHM 12 1 8W 1 96K OHM 1 1 8W 4 22K OHM 1 1 8W 10 0K 1 1 8W LOOK 1 1 8 19 6K 1 1 84 196 OHM 1 1 8W 51 1K OHM 1 1 2W 5 11K 1 1 8W WW 5K OHM 5 TYPE V IM MET MET MET MET MET MET MET MET MET MET MET MET MET MET MET MET MET MET MET MET MET MET MET MET MET MET MET MET MET MET MET MET MET MET MET MET FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM 3 16K OHM 1 1 8W 51 1K OHM 1 1 2W 100K 11 1 8W 19 6 1 1 8W 196 1 1 8W 825 1 1 8W 1 96K OHM 1 1 8 1 96K 1 1 8W 825 1 1 8W 196 OHM 1 1 8 1 96K OHM 1 1 8W 4 22K OHM 1 1 8W 4 22 OHM 1 1 8W 196 OHM 1 1 8W 61 9K OHM 1 1 8W 19 6K 1 1 8W 1 96K DHM 1 1 8W 1 96K OHM 1 1 8W 10 0K 1 1 8 10 0K 1 1
2. Service MM OMM SOGNO DRIVER SIN 20 dB xIO DETECTOR BUFFER AMPLIFIER Le 240 RIO9 20V 825 cig 0 05 I Q3 1853 0020 ca 2 0 01 1854 007 AIK Aa VERT ZERO ADJUST 7 cia SE AIR30 I 3 2 Y AXIS SIGNAL TO LOW PASS FILTER R38 4220 RECORDER R32 GAIN Ci L3 0 05 ADJUST 24 Too 20 C20 66 430pF 430pF e 4 cM C37 V CR5 L8 2404H 20V RIIO 825 A2AI 2 2 BASE DIAGRAM cos _ tt csi 024 6 8 1853 0020 025 1854 0071 022 923 1854 0221 X AXIS SIGNAL TO LOW PASS FILTER R85 4220 L9 2404 H 20 C42 4T 68 AIXA2 3 si HORIZ ZERO ADJUST N 20 dB XIO BUFFER AMPLIFIER Figure 8 14 Phase Shifter and Phase Detectors Schematic Diagram 8 13 8414 CRT GAIN 58 098 810 119 90b 922 1 920 chy 810 229 210 85 THO 125 198 66H 858 298 422 vou 6v3 v vry aby 22 88H 484 Evo 98M Figure 8 15 Low Pass Filters and Horizontal and Vertical Drivers Component Identification PART 2 CO ORDINATE CONVERTER ASSEMBLY 08414 6028 2 2 AIXA2 7 LOW PASS FILTER Y AXIS SIGNAL FRO
3. De dp Part No Description Note A302 1854 0232 0 51 NPN SELECTED FROM 2N3440 A3RI 0698 3639 MET OX 1 2K OHM 5 2W A3R2 0751 0361 R FXD MET FLM 100K OHM 1 1 2W A3R3 0151 0853 R FXD FLM 51 1K OHM 1 1 2W ABR4 0698 3422 R FXD MET FLM 42 2K OHM 1 1 2W A3R5 0698 0083 R FXD FLM 1 96K OHM 14 1 8W ABRE 0757 0401 R FXD MET FLM 100 OHM 1 1 8W A3R7 0751 0196 R FXD MET FLM 6 19K OHM 1 1 2W A3R8 0698 3440 R FXD MET FLM 196 OHM 1 1 8W A3R9 2100 1910 R VAR 100K OHM 20 3 4W A3R10 2100 1910 R VAR 100K DHM 20 3 4W A3RII 2100 1569 R VAR 1 MEGOHM 208 3 4W A3R12 6836 0002 CARBON 20 10 1 A3R13 0686 2055 R FXD COMP 2 MEGOHM 5 1 2W A3RI4 0687 1031 COMP 10K OHM 10 1 2W A3R15 NOT ASSIGNED A3R16 0686 1055 COMP 1 MEGOHM 5 1 2W A3R17 0836 0002 R FXD CARBON 20 MEGOHM 10 1W A3R18 757 0442 FLM 10 0K 1 1 88 A3R19 0698 3453 R FXD MET FLM 196K DHM 1 1 8W A3R20 2100 0542 R VAR FLM 50K OHM 20 3 4W A3R21 0761 0021 R FXD MET OX 1000 OHM 5 1W A3R22 0761 0021 R FXD MET OX 1000 OHM 5 1 A3R23 0761 0021 R FXD MET OX 1000 OHM 5 1W 08414 6004 ASSY 5100 V STAND OFF A3A1CI 0160 0151 C FXD CER 4700 PF 80 20 4000VDCW A3A1C2 0150 0036 C FXD CER 470 20 6KV A3A1C3 0150 0036 C FXD CER 470 PF 20 6KV A3AICRI 1901 0632 DIODE SILICON ABAICR2 1901 0632 DIODE SILICON A3AIRI 0698 3456 R FXD MET FLM 287K OHM 1X 1 8W A4 0
4. hung OUT 4 TO NETWORK REFERENCE CHANNEL INPUT ONLY NOTE FOR 8407A NETWORK ANALY ZERS CONNECT THE SWEEP OSCILLATOR VTO OUTPUT TO THE 8407A VTO VERT IN INPUT IN EQUIPMENT SWEEP OSCILLATOR 8690 SERIES WITH RF UNIT AS REQUIRED NETWORK ANALYZER HP 8410A 8411A OR 8407A 05 22 2 2222 2 2 2 222 2 2 22 2 22 HP 200CD 20 48 ATTENUATOR 2 HP 8491A OSCILLOSCOPE 22 2 2 2 4 4 22 HP 180A 1801A 1821A INITIAL EQUIPMENT SETUP a Remove 8414A covers and connect 8414A to Network Analyzer mainframe with extender cable HP Part No 08410 6032 b Set the sweep oscillator for single frequency operation and connect the RF output to the Network Analyzer reference channel input only c Set the Network Analyzer to phase lock to the applied signal and adjust the sweep oscillator RF output level for a Network Analyzer reference channel level meter indication in the middle of the operate region d Setthe Network Analyzer test channel gain controls for minimum gain e Setthe 8414A INTENSITY control fully clockwise f Press and hold the 8414A BEAM CTR pushbutton and adjust the HORIZONTAL and VERTICAL POS controls to locate the dot in the center of the Pol
5. FXD R R FXD R FXD R R FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM 10 0K 1 1 8W 5 11 1 1 8W 11 0K OHM 1 1 88 11 0K OHM 1 1 88 196 OHM 1X 1 8 19 6K 1 1 8W 61 9K 1 1 8W 17 8K OHM 1 1 8W 34 8K 1 1 8W 511 OHM 1 1 8W 12 1K OHM 1 1 8W 10 0K 15 1 8W 10 0K 1 1 8W 61 9 1 1 8W 825 DHM 1 1 8W 19 6K 1 1 8W 2 15K 1 1 8W 1 96K OHM 1 1 8W 196 OHM 1 1 8W 2 15K 1 1 8W FACTORY SELECTED PART R VAR R FXD R FXD R FXD R FXD R FXO R FXD FXD R VAR R R R R R WW 2K OHM 5 TYPE V 1M MET MET MET FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM FLM 61 9K OHM 1 1 8W 825 OHM 1 1 8W 19 6K 1 1 8W 196 OHM 1 1 8W 1 96 OHM 1 1 8W 1 96K OHM 1 1 8W 10 0K 1 1 8W 10 0K 1 1 8W 348 OHM 1 1 8 51 1K OHM 1 1 8W 100K 1 1 8W 1 10K OHM 1 1 8W 7 50 1 1 8W 42 2K OHM 1 1
6. J J3 HORIZONTAL J4 VERTICAL Figure 8 18 Intensity Modulator Schematic Diagram 8 17 Model 8414 Schematic 4 TROUBLESHOOTING t e Perform Block Diagram Trouble shooting Dot cannot be obtained on Polar Display and voltage at 1 1 will vary from at least 68V to 80V dc with front panel INTENSITY control Yes If voltage at 2 is 160V to 180V NOTE Remove Power Supply Cover trouble is most likely A3Q1 circuit and ground A3 Assembly to chassis with alligator clip If voltage at 2 is greater than 180V trouble is most likely 392 cir Connect voltmeter and oscilloscope to cuit 2 Voltage should be 153 7V dc and ripple less than 100 mV P P If voltage is less than 145V trouble is Xe most likely A3Q3 or A3C3 circuit If Series Regulator Q3 is bad check A8R17 for proper resistance Measure high voltage supply outputs using high voltage probe Supply voltages are If all three outputs are low troubleshoot 2500V Supply is 2200 to 2650V No Multivibrator Q1 Q2 circuit If only one 2450V Supply is 2150 to 2600V output is abnormal troubleshoot the 5100V Supply is 4500 to 5300V associated power supply Yes No Measure voltage at center arm of R3B T FOCUS control while varying control from one extreme to the other Voltage Troubleshoot R3B A3R12 and A3R13 should vary from about 1700V
7. ZER 1 V ZERO 2 H A2023 ZERO 8 V OUT 11 2 22 gt ASSEMBLY H IN 84144 INTENSITY MODULATOR 936 29 3 OF 4 _ R4 1960 1854 0232 DIFFERENTIAL AMPLIFIER ITCH 32 0071 56 55 CURRENT SOURCE Q5 1854 0071 RI2 4220 20V EMITTER Q7 1854 0232 1854 0232 O Cw R41 4 22K Q8 1854 0071 20V 1854 007 2 MANUAL BEAM CENTERING HORIZ ZERO ADJ CENTERING CR6 1901 0025 R30 34 8K SEE NOTE 3 THIS PAGE MANUAL BEAM 2 CENTERING VERT L ZERO ADJ cw 2 20 R32 IOO CR8 SEE NOTE 2 THIS PAGE WHT BLU FOLLOWER AUTO BEAM CENTER S e KI SHOWN IN MANUAL POSITION CORR DISPLAY i 2 gt UNCORR VERT OUTPUT 1 I I I l UNCORR HORIZ OUTPUT REFERENCE DESH ASSEMBLIES ARE CLUDES ASSEMBL tS AIRI COMPLETE AS SHC P O A3 DESIG A4JI 15 NOTES 1 SEE 2 INSTAL 3 CONNE 4 CIRCUI P O ASSEMBLY 08414 6003 OF 3 Section VIII R20 lt SOK 150V Service EMITTER F S OLLOWER 113 INTENSITY 1854 0232 1854 0232 O cw R3A 05 4 0071 RIA RI3 26 1K 3 83K
8. azul wip2 e T s TEST FOR H 26 844A T EST IN 74 WIRING OPTION 278kHz TEST CHAN AMPLITUDE SIGNAL INPUT Figure 8 23 Interconnection Diagram 8 21 Section VIII Model 8414A Service C Ce crt uo os 4 ASSEMBLY 8 22 Model 8414 CO ORDINATE CONVERTER A2 D pepe 23 ETT BV NN Mt MV MA MR 220 A2 SI TEST NORMAL LEFT SIDE Z AXIS MODULATOR AND INTERCONNECT AIR33 MANUAL BEAM CENTERING VERT ZERO ADJ AIR32 MANUAL BEAM CENTERING HORIZ ZERO ADJ 2 21 PHASE ADJ A2R37 RECORDER GAIN ADJ A2R57 CRT GAIN ADJ A2 CO ORDINATE CONVERTER Z AXIS MODULATOR AND INTERCONNECT BLU vio HORT PLATES PATTERN SHAPE 20v Q3 A3RIO PATTERN SHAPE A3R9 ILLUMINATION LIMIT A3R20 INTENSITY LIMIT ASRII ASTIGMATISM POWER SUPPLY QI Q2 T2 R5 e TRACE ALIGN d R3B R3A bk INTENSITY Section VIII Service A3 POWER SUPPLY ANODE SUPPLY TI T2 R5 TRACE ALIGN R3B FOCUS R3A INTENSITY RIGHT SIDE Figure 8 24 Location of Adjustments Chassis mounted Parts and Major Assemblies 8 23 Kin HEWLETT PACKARD HP Part No
9. 8 1 INTRODUCTION 8 2 This section contains principles of operation circuit descriptions troubleshooting procedures Schematic diagrams and repair procedures 8 3 PRINCIPLES OF OPERATION 8 4 A description of the simplified block diagram and general principles of operation are presented on the first foldout A detailed block diagram description is presented on the back of the foldout preceding the diagram Schematic circuit descrip tions are given on the back of the foldout preced ing each schematic diagram 8 5 TROUBLESHOOTING 8 6 An equipment setup and preliminary instruc tions for all troubleshooting procedures are given in Figure 8 4 Troubleshooting procedures for the block diagram and each schematic are on the back of the foldout preceding the block diagram and each schematic 8 7 RECOMMENDED TEST EQUIPMENT 8 8 The test instruments and accessories required for troubleshooting are listed in Table 8 1 Test instruments other than those listed can be used provided their performance equals or exceeds the Critical Specifications listed 8 9 REPAIR 8 10 Part Location Aids 8 11 The locations of adjustments chassis mounted parts and major assemblies are shown on the last foldout The locations of individual com ponents mounted on a printed circuit board are shown opposite the related schematic diagram The part reference designator may be found from the schematic diagram then located on the boar
10. Conversion of Typical Time Amplitude Graph to Polar Graph Polar Vector of Test Signal e Horizontal and Vertical Vectors Re quired to Deflect CRT Beam Vector Graph of Typical Test Signal Simplified Overall Block Diagram Test Point Locations Detailed Block Diagram Phase Shifter and Phase Detectors Component Identification Phase Shifter and Phase Detectors Schematic Diagram Low Pass Filters and Horizontal and Vertical Drivers Component Iden tification Low Pass Filters and Horizontal and Vertical Drivers Schematic Diagram Intensity Modulator Component Identification Intensity Modulator Schematic Di CRT High and Low Voltage Supplies and 150 Volt Supply Component Identification CRT High and Low Voltage Supplies and 150 Volt Supply Schematic Diagram Mainframe Plug In Connector Detail for H26 8414A Mainframe Plug In Connector Detail for Standard 8414 Interconnection Diagram Location of Adjustments Chassis mounted Parts and Major Assem blies Title Parts List Indexed by HP Part Num ber 2 2 Code List of Manufacturers Recommended Test Equipment Printed Circuit Soldering Equipment Ohmmeters Used for Transistor Test ing Out of Circuit Transistor Testing Intensity Modulator DC Voltage Measurements 8 15 8 17 8 17 8 19 8 19 8 20 8 21 8 21 8 23 Section I Model 8414A General Information VERT
11. Impedance 50 ohms 10 at 278 kHz Connector Male BNC lFor 8407A Network Analyzers use HP Model 11561A or BNC Tee 8407A Network Analyzers Model 8601A Sweep Oscillator may be used Model 8414A Recommended HP Model 200 CD 651A 6231A 180A with 1801A and 1821A 8410A with 8411A or 8407A 8740A 8741A 8742A 8743A or 8745A see Note 1 8690A with RF unit as required see Note 2 8419A with N to BNC adapters see Note 3 10100A or HP Part No 1250 0839 with adapter 1250 0831 3 Oscilloscope 10 1 divider probe such as HP Model 10003A may be used in place of 20 dB attenuator Model 8414 Section V Adjustment Procedures Table 5 2 Adjustment Controls and Functions Control Phase Adjust A2R21 Recorder Gain Adjust A2R37 CRT Gain Adj AZR57 Intensity Limit A3R20 Pattern Shape 10 Illumination Limit A3R9 Astigmatism A3R11 Trace Align R5 Manual Beam Centering Horiz Zero Adj A1R32 Manual Beam Centering Vert Zero Adj A1R33 Function Affected Adjust phase shift of 90 phase shifter Adjusts horizontal and vertical amplitude balance by adjust ing gain of vertical buffer amplifier Adjust horizontal and vertical deflection balance by adjust ing gain of vertical deflection driver Sets brightness range of INTENSITY control Provides grid accelerator voltage for pattern shaping Adjusts uniformity of illumination from flood gun Adjusts uniformity of focus Ca
12. Recommended HP Model Table 4 1 Recommended Test Equipment Item Critical Specifications Oscillator Frequency Range 280 50 kHz Output Level variable from 0 to 3 0 Vrms Output Impedance 50 to 600 ohms 200CD 651A DC Power Supply Output 5 Vdc Oscilloscope Vertical Minimum bandwidth 5 MHz Minimum sensitivity 10 mV cm Input dc and ac Horizontal 180A with 1801A and 1821A Range 1 to 5 usec cm Network Analyzer No Substitute may be used 8410A with 8411A or 8407A Sweep Oscillator Frequency Range any frequency within the operating range of the Network Analyzer 8690A with RF unit as required see Note 1 20 dB Attenuator Attenuation 20 dB 8 SWR 1 3 max 280 kHz Connector BNC Impedance 50 ohms nominal 8491A with N to BNC adapters see Note 2 lFor 8407A Network Analyzers Model 8601A Sweep Oscillator may be used 20scilloscope 10 1 divider probe such as HP Model 10003A may be used in place of 20 dB attenuator CC eee 4 1 Section IV Performance Tests Model 8414A PERFORMANCE TEST OPERAT ING PRECAUTIONS MECHANICAL SHOCK Do not bump or jar the Polar Display as mis alignment of the CRT gun may result MAGNETIC FIELDS Do not place the Polar Display near a sweep generator containing a BWO which has an unshielded magnet or the CRT will be permanently magnetized causing poor focus Separate the 8414A from any
13. Tinnerman Products Inc Cleveland Ohio Transformer Engineers San Gabriel Cal Ucinite Co 2 Newtonville Mass Waldes Kohinoor Inc Long Island City N Y Veeder Root Inc Hartford Conn Wenco Mfg Co Chicago Continental Wirt Electronics Corp Philadelphia Pa Zierick Mfg Corp New Rochelle N Y Mepco Division of Sessions Clock Co Morristown N J Prestole Corp Toledo Ohio Schnitzer Alloy Products Elizabeth N J Electronic Industries Association Any Brand Tube meeting EIA Standards Washington D C Unimax Switch Div Maxon Electronics Corp Wallingford Conn New York N Y Chicago Ill Riverside Cal Columbus Ohio Defiance Ohio Monrovia Cal Mars Hill N C Boston Mass Dayton Ohio Orange Conn LaGrange Ill Venice Cal Oakville Conn United Transformer Corp Oxford Electric Corp Bourns Inc Arco Div of Robertshaw Controls Co All Star Products Inc Avery Label Co Hammarlund Co Inc Stevens Arnold Co Inc Dimco Gray Co International Instruments Inc Grayhill Co Triad Transformer Corp Winchester Elec Div Litton Ind Military Specification 122022020222 202 International Rectifier Corp Sugundo Cal Airpax Electronics Inc Cambridge Maryland Barry Controls Div Barry Wright Corp Watertown Mass Carter Precision Electric Co e Skokie Ill Sperti Faraday Inc Copper Hewitt Electric Div Ho
14. Transducer Service Cable sup plied with 8410A or 84074A High Voltage DCVM 0 1 kHz Output Level variable from 0 to 3 0 Vrms Output Impedance 50 to 600 ohms Output 5 Vde Vertical Minimum bandwidth 5 MHz Minimum sensitivity 10 mV cm Input de and Horizontal Range 1 usec cm to 5 usec cm No Substitute May be Used Frequency Range Any frequency within the operating range of the Network Analyzer Impedance 50 ohms nominal Attenuation 20 dB 3 dB SWR 1 3 max 1 kHz and 280 kHz Connector BNC Frequency Range Same as Sweep Oscillator No Substitute May be Used Range Oto 6 kV Accuracy 10 of reading Input Impedance 212G ohms lFor 8407A Network Analyzers Model 8601A Sweep Oscillator may be used Section VIII Model 8414A Service Table 8 1 Recommended Test Equipment Item Critical Specifications Recommended HP Model Oscillator Frequency Range 280 50 kHz and 1 200CD 651A 6213A 180A with 1801A and 1821A 8410A with 8411A or 8407A 8690A with RF unit as required see Note 1 8491A with N to BNC adapters see Note 2 8740 8741 87424 8743A or 8745 see Note 3 HP Part No 08410 6032 410B with 11044A volt age divider probe 2O0scilloscope 10 1 divider probe such as HP Model 10003A may be used in place of 20 dB attenuator 3For 8407A Network Analyzers use HP Model 11561A or BNC Tee 8 0 Model 8414A Section VIII Service SECTION VIII SERVICE
15. alate RNIER MID RANGE and TP16 5V P P N 77 v 77 J 14 and 17 5V 2 2 1 5V JVV AN A2TP14 0 1V P P A2TP3 0 2V P P SS VV A2TP15 0 2V P P A2TP1 0 1 NAN 4 DETAILED BLOCK DIAGRAM 2 18 0 25 A2TP8 0 25V P P C A2TP6 9V P P A2TP7 9V P P E SAME AS D WITH PHASE MAP JI VERNIER MID RANGE A2TP5 and TP16 J J JZ o A2TP14 and TP17 5V P P Section VIII Service SCHEMATIC 1 CIRCUIT DESCRIPTION TEST CHANNEL AMPLITUDE Input The test channel signal is applied to the Polar Dis play Unit from either the Network Analyzer main frame for the standard 84144 or from a rear panel BNC connector for the H26 8414A Switch Beam Center The test channel input is fed to switch 2 1 CR2 which grounds the input when the beam center pushbutton is pressed or for the H26 8414A when the Auto Beam Centering cir cuit is activated During non beam center operation a positive voltage is applied to the junction of CR1 and CR2 CR41 is biased on CR2 is biased off and the input signal is applied to the preamplifier at A2Q19 When the beam center pushbutton is pressed or for the H26 8414A when the Auto Beam Centering circuit is activated the voltage at the junction of CR1 and CR2 is negative CR2 is biased on and the input signal is grounded through CR2 Preamplifier The prea
16. C auxiliary outputs lt 10 mV C Beam Center Pressing BEAM CTR pushbutton simulates zero signal input to test channel and allows convenient beam position adjust ment for reference CRT Five inch 5 kV post accelerator tube with P 2 phosphor and internal polar graticule graphing displays additional convenience for photographing displays is provided by panel controlled internal graticule illumination elimi nating the need for an ultraviolet light source in the camera A beam centering pushbutton in con junction with continuous action positioning con trols permits easy initial calibration and accuracy improving offset adjustments Rear panel blanking and marker inputs accept externally generated signals for between sweep display blanking and for frequency marking by beam brightening The hori zontal and vertical components of the polar display are available at separate rear panel outputs for driv ing external displays such as X Y graphic recorders The polar display is fully transistorized except for the CRT and is powered by the Network Analyzer mainframe Complete specifications are given in Table 1 1 Specifications Marker Input rear panel Accepts frequency marker output pulse from HP 8690 series or 690 series Sweep Oscillators 5 volts peak Trace is brightened for duration of marker pulse Blanking Input rear panel Accepts 4 volt blanking pulse from HP 8690 series and 690 series Sweep Oscilla
17. Connect osc TP23 Oscill be similar to HORIZONTAL Yes DEFLECTION OK Trouk Driver matic If deflectior horizontal d does not def 4 SIMPLIFIED BLOC Voltage is intensity con 80Vdc No Po Intensity Modula on Schematic CRT Power Sup on Schematic 4 o A2TP22 and sentation should No izontal Deflection rmation on Sche present at CRT lates and beam CRT mam Without changing signal amplitude con nect oscillator set for 1 kHz to 8414A VERTICAL OUTPUT Deflection on CRT adjustable to 10 cm with A2R7 VERTICAL Yes DEFLECTION OK Set S1 to NORMAL and Network Analy zer test channel gain to minimum Dis connect oscillator from 8414A and con nect to Network Analyzer test channel output Set oscillator frequency to 280 kHz 8414A presentation adjustable to a 10 circle by adjusting oscillator fre quency and amplitude Yes 8414A OK Model 8414A Connect oscilloscope to A2TP11 and TP13 Oscilloscope presentation should be similar to B below No Troubleshoot vertical deflection driver using information on Sche matic 2 If deflection signal is present at CRT vertical deflection plates and beam does not deflect replace CRT Connect oscilloscope to A2TP9 and No TP19 Oscilloscope presentation adjust able to waveform similar to C by adjust ing oscillator frequency and amplitude Yes Troublesho
18. FLM 6 19 OHM 1 1 2W C4 1 0757 0279 Rs sFXD MET FLM 3 16K OHM 1 1 8W C4 3 0757 0280 Rs FXD MET FLM OHM 1 1 8W C4 2 0757 0290 R FXD FLM 6 19 OHM 1 1 8W 0757 0290 2 RzFXD FLM 100K OHM 1 1 2MW 0757 0367 1 9134 0367 6 12 See introduction to this section for ordering information Model 8414A Section VI Replaceable Parts Table 6 3 Parts List Indexed by HP Part Number Cont Part No Description Mfr Mfr Part No TQ 0757 0401 R FXD MET FLM 100 OHM 1 1 8W 14674 4 1 0757 0416 R FXD FLM 511 OHM 12 1 8W 14674 C4 1 0757 0421 R FXD FLM 825 OHM 1 1 8W 28480 0757 0421 6 0757 0424 FLM 1 10K OHM 1 1 8W 28480 0757 042 2 0757 0438 R FXD FLM 5 11K 1 1 8W 14614 4 3 0757 0439 R FXD FLM 6 81 1 1 8W 28480 0757 0439 1 0757 0440 MET FLM 7 50K 1 1 8W 14674 C4 4 0751 0442 MET FLM 10 0K 1 1 8W 14674 18 0757 0443 R FXD MET FLM 11 0K OHM 1 1 8W 61637 MF 1 10 32 2 0757 0444 R FXD MET FLM 12 1K OHM 1 1 8W 28480 0757 0444 1 0757 0447 R FXD FLM 16 2 OHM 1 1 8W 28480 0757 0447 1 0757 0458 FLM 51 1 OHM 1 1 8W 91637 MF 1 10 32 4 0757 0460 R FXD FLM 61 9K 1 1 8W 28480 0757 0460 4 0757 0465 FLM 100K 1 1 8W 14674 C4 8 0757 0853 R FXD 51 1K OHM 1 1 28 28480 0757 0853 6 0761 0021 R FXD MET OX 1000 OHM 5 IW 14674 10 32 3 0836 0002 R FXD CARBON 20 MEG
19. Litton Industries Inc Beverly Hills Cal 01281 TRW Semiconductors Inc Lawndale Cal 01295 Texas Instruments Inc Transistor Products Div Dallas Texas 01349 The Alliance Mfg Co Alliance Ohio 01538 Small Parts Inc Los Angeles Cal 01589 Pacific Relays inc Van Nuys Cal 01670 Gudebrod Bros Silk Co New York N Y 01930 Amerock Corp Rockford 01960 Pulse Engineering Co Santa Clara Cal 02114 Ferroxcube Corp of America Saugerties N Y 02116 Wheelock Signals Inc Long Branch 4 02286 Cole Rubber and Plastics Inc Sunnyvale Cal 02660 Amphenol Borg Electronics Corp Broadview Ill 02735 Radio Corp of America Semiconductor and Materials Division Somerville N J 02771 Vocaline Co of America Inc Saybrook Conn 02777 Hopkins Engineering Co San Fernando Cal 02875 Hudson Tool amp Die Newark N J 03508 G E Semiconductor Prod Dept Syracuse N Y 03705 Apex Machine amp Tool Dayton Ohio 08797 Eldema Corp 2 Compton Calif 03818 Parker Seal Co 2 Los Angeles Cal 03877 Transitron Electric Corp Wakefield Mass 03888 Pyrofilm Resistor Co Inc Cedar Knolls N J 03954 Singer Co Diehl Div Finderne Plant Sumerville N J 04009 Arrow Hart and Hegeman Elect Co Hartford Conn 04013 Taruus Corp Lambertville N J 04062 Arco Electronic Inc Great Neck N Y 04217 Essex Wire Los Angeles Cal 04222 Hi Q Division
20. for location of Sl and set 51 to NORMAL If an input signal does M deflect the Obtain equal reference and test channel electrical lengths by adjusting the Line Stretcher to collapse the trace to a dot or smallest cluster Adjust the Network Analyzer phase vernier test channel gain and amplitude vernier controls to place the dot or cluster for a reference indication of 1 2180 see Figure 3 11 Display B MEASUREMENT Remove the coaxial short and connect the device under test to the reflectometer un known port Read the reflection coefficient magnitude and phase or impedance using a Smith Chart overlay from the display NOTE For small reflection coefficients the 8414A resolution can be improved by increasing the Network Analyzer test channel gain For example increas ing the test channel gain by 20 dB changes the full scale calibration from 1 0 to 0 1 at the outer circle see para graph 3 10 For increased accuracy by minimizing directivity errors see paragraph 3 33 lpisplay reference for 8407 A Figure 3 9 Reflection Coefficient Measurement Sheet 2 of 2 3 9 Section Operation Model 8414A TRANSMISSION MEASUREMENT CAUTION MECHANICAL SHOCK Do not bump or jar the Polar Display as misalign ment of the CRT gun may result MAGNETIC FIELDS Do not place the Polar Display near a sweep genera tor containing a BWO which has an unshielded magnet or the CRT will be permane
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22. 10 dB resolution can be improved by changing the full scale calibra tion To obtain higher resolution add additional gain to the test channel by setting the Network Analyzer test channel gain controls to a higher value The outer or O dB circle will then equal the change in test channel gain The total return loss is the sum of the change in test channel gain plus the value indicated on the return loss overlay For example if the initial display indicated a return loss greater than 10 dB and a 12 dB increase in Network Analyzer test channel gain moved the display indication to mid point between the 0 and 1 dB graticule circles the total return loss would be 12 dB plus 0 5 dB or 12 5 dB 3 14 Four return loss overlays are furnished with the Polar Display two for viewing and two with parallax correction for photographing There is a clear overlay and an opaque overlay for viewing a LOSS 9B 7 Vig a N RETURN C20 LOG 0p 65 Fd I 08414 0023 tool Figure 3 2 Return Loss Overlay Section III Operation clear and an opaque overlay for photographing The opaque overlays mask the internal graticule so only the overlay lines are visible 3 15 Polar Display of Transmission Measurements 3 16 A polar display of transmission measure ments in dB or in transmission coefficient 7 and phase angle can be obtained using the test setup and procedures in Figure 3 10 During calibration the display s outer r
23. 3 5 3 7 Section VI VIII Model 8414A Page IV PERFORMANCE TESTS 4 1 4 1 Introduction 4 1 4 4 Equipment Required 4 1 4 6 Test Record 4 1 4 8 Accuracy Test 4 3 4 9 Horizontal and Vertical Output Tests 4 4 4 10 Marker and Blanking Input Tests 4 4 ADJUSTMENT PROCEDURES 5 1 5 1 Introduction 5 1 5 5 Factory Selected Components 5 1 5 7 Equipment Required 5 1 5 9 Trace Alignment and Vertical Gain Adjustment 5 4 5 10 Phase Recorder Gain and Pattern Shape Adjustments 5 6 5 11 Astigmatism Adjustment 5 8 5 12 Hlumination Adjustment 5 8 5 13 Intensity Adjustment 5 9 5 14 Manual Beam Centering Zero Adjustment 5 10 5 15 Phase Zero Adjustment 5 12 REPLACEABLE PARTS 6 1 6 1 Introduction 6 1 6 3 Ordering Information 6 1 MANUAL CHANGES 7 1 7 1 Introduction 7 1 SERVICE 8 1 8 1 Introduction 8 1 8 3 Principles of Operation 8 1 8 5 Troubleshooting 8 1 8 7 Recommended Test Equipment 8 1 8 9 Repair 2 8 1 8 10 Part Location Aids 8 1 8 12 Circuit Board Repair 8 1 8 15 Component Replacement 8 1 8 17 Transistor Replacement 8 2 8 19 Diode Replacement 8 2 8 21 Schematic Diagrams 8 3 Model 8414 List of Illustrations LIST OF ILLUSTRATIONS Title Model 8414A Polar Display Model 8414A Front and Rear P
24. 3 5 CRT Overlays 3 6 Model 8414 REFLECTION COEFFICIENT VECTOR OF DEVICE UNDER TEST OR SLIDING LOAD DIRECTIVITY ORIGIN 7 VECTOR Figure 3 6 Measured Reflection Coefficient cies The measured reflection is the vector sum of the directivity vector plus the reflection coefficient of the device under test or a sliding load see Fig ure 3 6 The error can be calibrated out with a sliding load Figure 3 7 depicts the sliding load in one position at a single frequency As the sliding load is moved the magnitude of its reflection coef ficient remains constant but the phase of the coef ficient changes As the load is moved its reflection coefficient indication rotates in a circle of constant magnitude about the directivity vector The center of this circle is the tip of the directivity vector When the magnitude of the directivity vector is zero the locus circle is centered about the origin as shown in Figure 3 8 When the location of the cen ter of the circle is known the directivity vector can be subtracted from the measured reflection The AV LOCUS 59 Figure 3 7 Locus of Measured Reflection when Load is Moved Section III Operation resultant is the reflection coefficient of the device under test 3 35 The vector subtraction can be performed directly with the horizontal and vertical controls on the 8414 Polar Display Increase the Network Analyzer test channel gain so full sca
25. 8W 14 7K 1 1 8W WW 5K OHM 5 TYPE V 1W MET MET MET MET MET MET MET FLM FLM FLM FLM FLM FLM FLM 4 22K OHM 1 1 8W 10 0K 1 1 8W 10 0K 1 1 8W 2 87K OHM 1 1 8W 51 1K OHM 1 1 8W 100K 1 1 8W 1K OHM 0 1 1 8W i V hy Model 8414A Reference Designation A2R45 A2R46 2847 A2R48 A2R49 A2RSO A2R51 A2R52 A2R53 A2R54 A2R55 A2R56 A2R57 A2R58 A2R59 A2R60 A2R61 A2R62 A2R63 A2R64 A2R65 A2R66 2867 2668 A2R69 A2R70 A2R71 2872 2873 2874 2875 2876 2877 2878 2879 A2R80 A2R81 A2RB2 A2R83 A2R84 A2R85 A2R86 A2R87 A2R88 A2R89 A2R90 A2R91 A2RS2 A2R93 Table 6 2 Parts List Indexed by Reference Designation Cont Part No 0698 3491 0098 3445 0757 0440 0698 3450 0696 0683 0698 3154 0757 0442 0757 0465 0698 3157 0698 3440 075 71 0853 0757 0438 2100 176 0757 0279 0757 0853 0757 0465 0698 3157 069 8 3 440 0757 0421 0698 0 83 0698 0083 0757 0421 0698 3440 0698 0083 0698 3154 0698 3154 0698 3440 0757 0460 0698 3157 0698 0083 0698 0083 0757 0442 0757 0442 0698 3445 0757 0458 0757 0465 0757 0424 0757 0440 0698 3450 0757 0447 0698 3154 0757 0442 0757 0442 0698 3151 0767 0458 0757 0465 0698 3491 0698 3491 0698 3445 Description Replaceable Parts Note R FXD R FXD R FXD R FXD FXD FXD R Rs
26. AIPI Lt SI 2H 1 l MANUAL BEAM CENTERING VERT 2 ZERO ADJ 529 96 R33 IOO 20V CR8 BEAM Cw n 4 lt IV HORIZ ff ADJ SHOWN IN MANUAL POSITION SEE NOTE 2 AIPI E TRA THIS PAGE 34 8K 20 CORR DISPLAY 1 1 1 UNCORR VERT OUTPUT I I I I i i 415 PAGE UNCORR HORIZ OUTPUT AUTO BEAM CENTER le gt gt gt r n h A CRT GRID BIAS INTENSITY BIAS PLUS lt o BLANKING OR MARKER PULSES 4 TO CRT GRID VOLTAGE SUPPLY REFERENCE DESIGNATIONS WITHIN OUTLINED ASSEMBLIES ARE ABBREVIATED FULL DESIGNATION IN CLUDES ASSEMBLY NUMBER e g RI OF ASSEMBLY Al IS AIRI DESIGNATIONS OF OTHER COMPONENTS ARE COMPLETE AS SHOWN 20 I SEE FIGURE 8 3 FOR GENERAL NOTES MEASUREMENT CONDITIONS 2 INSTALLED IN H 26 8414A ONLY 3 CONNECTED IN STANDARD 8414A ONLY 4 CIRCUITRY IN SHADED AREA USED IN H 26 8414A ONLY REFERENCE DESIGNATIONS NO Al 4 PREFIX ASSY ASSY ASSY ASSY JI 2 2 R20 JI R3A CRI 8 PI P3 SI LI QI II RI I5 22 41 A4J1 l l 2 22 CORRECTED DISPLAY I gt gt ENABLE l l aan CORR VERT IN VERT OUT MAINFRAME CORR HORIZ IN
27. Model 8414A Adjustment Procedures ADJUSTMENT PROCEDURE i TF T 5 11 ASTIGMATISM ADJUSTMENT DESCRIPTION Without changing the equipment from the previous setup the Astigmatism control and FOCUS are adjusted with and without the BEAM CTR pushbutton pressed for the sharpest focus at both the center and the outside edge of the CRT EQUIPMENT SETUP Same as Figure 5 2 PROCEDURE a Ifequipment was altered from Paragraph 5 10 repeat procedure in Paragraph 5 10 b Adjust front panel FOCUS control and A3R11 Astigmatism control alternately with and with out the BEAM CTR pushbutton pressed until sharp focus is obtained at both the center and outside edge of the CRT 5 12 ILLUMINATION ADJUSTMENT DESCRIPTION Without changing the equipment from the previous setup the front panel ILLUMINATION control is adjusted for maximum CRT illumination and the Illumination Limit control is adjusted for the brightest possible uniform illumination EQUIPMENT SETUP Same as Figure 5 2 PROCEDURE a If equipment was altered from previous test repeat procedures in Paragraph 5 10 b Shield the face of the CRT from ambient light oscilloscope viewing hood HP Model 10175A B may be used c Turn front panel ILLUMINATION control fully clockwise d Adjust A3R9 Illumination Limit control until brightest possible uniform illumination is obtained on the CRT Model 8414 Section V Adjustment Procedures ADJUSTMENT PROCEDU
28. No Manufacturer Address 10411 Ti Tal Inc Berkeley Cal 10646 Carborundum Co Niagara Falis N Y 11236 CTS of Berne Ine Berne Ind 11237 Chicago Telephone of California Ine M e So Pasadena Cal 11242 Bay State Electronics Corp Waltham Mass 11312 Teledyne Inc Microwave Div Palo Alto Cal 11314 National Seal Downey Cal 11453 Precision Connector Corp Jamaica N Y 11534 Duncan Electronics Inc Costa Mesa Cal 11711 General Instrument Corp Semiconductor Division Prod ucts Group Newark N J 11717 Imperial Electronic Inc Buena Park Cal 11870 Melabs Inc Palo Alto Cal 12136 Philadelphia Handle Co Camden N J 12361 Grove Mfg Co Inc Shady Grove Pa 12574 Gulton Ind Inc Data System Div Albuquerque N M 12697 Clarostat Mfg Co Dover N H 12728 Elmar Filter Corp W Haven Conn 12859 Nippon Electric Co Ltd Tokyo Japan 12881 Metex Electronics Corp Clark N J 12930 Delta Semiconductor Inc Newport Beach Cal 12954 Dickson Electronics Corp Scottsdale Arizona 13019 Airco Supply Co Inc Witchita Kansas 13103 Thermolloy Dallas Texas 13396 Telefunken GmbH ee Hanover Germany 13835 Midland Wright Div of Pacific Industries Inc 1 22 2222 Kansas City Kansas 14099 Sem Tech Newbury Park Cal 14193 Calf Resistor Corp Santa Monica Cal 14298 American Components Inc Conshohocken Pa 14433 Semiconductor Div of Int Telephon
29. Performed by Serial No Para Number Specification Tested Measured 4 8 Error circle on CRT less than 3 mm radius Max Error 4 9 Horizontal and Vertical output minimum bandwidth 3 Horiz dB 10 kHz Bandwidth Vert Bandwidth 4 10 5V marker input intensifies CRT display 5V blanking input blanks CRT display Model 8414A Section V Adjustment Procedures SECTION V ADJUSTMENT PROCEDURES 5 1 INTRODUCTION 5 2 This section provides instructions for adjust ing the 8414A If the serial prefix of your instru ment is different from that listed on the title page of this manual there are differences between your instrument and the instrument described in this manual See paragraphs 1 7 and 1 8 5 3 Paragraphs 5 9 through 5 15 contain the complete adjustment procedures for the 8414A Adjustments in paragraphs 5 9 and 5 10 interact and should be performed sequentiall Adjust ments in paragraphs 5 11 through 5 15 do not interact and need not be performed sequentially These procedures should not be performed as part of routine maintenance but should be used only after replacement of a part or component or when the performance test shows that the specifications of Table 1 1 cannot be met Before attempting any adjustment allow 30 minutes warm up time for the 8414A and Network Analyzer 5 4 The location of all adjustment controls is shown in Figure 8 24 last foldout Table 5 2 lists the adjustment controls and the function
30. RECORDER GAIN AND PATTERN SHAPE ADJUSTMENTS DESCRIPTION A CW signal is applied to the Network Analyzer to provide a reference channel input signal to the 8414A and for 8410A Network Analyzers so that the Network Analyzer unblanks the 8414A display 280 kHz signal is applied to the 8414A amplitude channel through the Network Analyzer test channel output connector These two signals cause a circle to be displayed on the 8414A The radius of this circle is adjusted to the radius of the outer graticule circle by adjusting the amplitude of the 280 kHz signal The 8414A PHASE ADJUST control RECORDER GAIN ADJUST control and PATTERN SHAPE control are adjusted for the best circle PROCEDURE NOTE Perform paragraph 5 9 TRACE ALIGNMENT AND VERTICAL GAIN ADJUSTMENT before performing this adjustment a Connect equipment as shown in Figure 5 2 b Set the sweep oscillator for single frequency operation at any frequency within the frequency range of the Network Analyzer c Set the Network Analyzer to phase lock to the applied signal and adjust the sweep oscillator RF amplitude for a Network Analyzer reference channel level meter indication in the middle of the operate region d Press and hold the 8414A BEAM CTR pushbutton and adjust the HORIZ POS and VERT POS controls to locate the dot in the center of the Polar Display e Set the Network Analyzer test channel gain controls for minimum gain For 8407A Network Analyzers set display reference
31. admittance circle opposite the impedance point The normal lpisplay reference for 8407A Model 8414 75 n 7 ADMITTANCE POINT 9 115 10 77 x JN x gt 22 gt or 222224 IMPEDANCE POINT Figure 3 4 Smith Chart Plot of Admittance Point ized admittance may be read directly from the graph In Figure 3 4 the normalized admittance value is 1 15 j0 77 3 24 Alternate Smith Chart Overlays 3 25 Twelve different Smith Chart overlay graphs are furnished with the Polar Display There are three graph styles in the Smith Chart overlays a standard graph an expanded graph and a com pressed graph refer to Figure 3 5 There are four overlays for each of the graph styles two for view ing and two with parallax correction for photo graphing There is a clear overlay and an opaque overlay for viewing a clear and an opaque overlay for photographing The opaque overlays mask the internal graticule so only the overlay lines are vis ible 3 26 Standard Smith Chart Overlay When a standard Smith Chart overlay is installed on the face of the CRT the standard calibration of the Polar Display provides the correct scaling factor for the Smith Chart Scaling factors for the expanded and compressed chart overlays are computed from the standard calibration of the Polar Display Adjustment of the test channel gain for the expanded and compressed graphs is explained in the following paragraphs Section
32. are fully understood and met The CAUTION sign denotes a hazard calls attention to an operating procedure practice or the like which if not correctly performed or adhered to could result in damage to or destruc tion of part or all of the product Do not proceed beyond a CAU TION sign until the indicated conditions are fully understood and met SAFETY EARTH GROUND This is a Safety Class I product provided with a protective earthing terminal An uninterruptible safety earth ground must be provided from the main power source to the product input wiring ter minals power cord or supplied power cord set Whenever it is likely that the protection has been impaired the product must be made inoperative and be secured against any unintended operation BEFORE APPLYING POWER Verify that the product is configured to match the available main power source per the input power configuration instructions provided in this manual If this product is to be energized via an autotrans former make sure the common terminal is con nected to the neutral grounded side of mains supply SERVICING WARNING Any servicing adjustment maintenance or repair of this product must be per formed only by qualified personnel Adjustments described in this manual may be performed with power supplied to the product while protective covers are removed Energy available at many points may if contacted result in per sonal injury Ca
33. control is adjusted to align the trace with the horizontal graticule line The vertical amplifier gain is matched to the horizontal amplifier gain by applying the 1 0 kHz signal to the VERTICAL output and adjusting the vertical gain control CRT Gain Adj for a vertical trace equal to the magnitude of the horizontal trace PROCEDURE a Remove top covers from both the Network Analyzer and the 8414A adjustments should be made with the 84144 installed in the mainframe b Connect equipment as shown in Figure 5 1 c Set the sweep oscillator for single frequency operation at any frequency within the frequency range of the Network Analyzer d Set the Network Analyzer to phase lock to the applied signal and adjust the sweep oscillator RF amplitude for a Network Analyzer reference channel level meter indication in the middle of the operate region e Set the 8414A function switch 251 to the TEST position f Terminate the 8414A rear panel VERTICAL output connector with a 50 ohm load g Adjust front panel VERT POS and HORIZ POS controls to locate dot in center of the CRT h Adjust front panel INTENSITY control for medium beam intensity on CRT Adjust front panel FOCUS control for a small round dot on CRT i Connect oscillator set for 1 0 kHz to the rear panel HORIZONTAL output Adjust oscillator signal level for a 10 cm deflection on CRT diameter of outer graticule circle j Adjust R5 Trace Align control and VERT POS control
34. control switches down f Adjust the oscillator connected to the Network Analyzer test channel output as follows 1 Adjust the frequency to obtain the best circle slight flicker in 8414A display 2 Adjust the output amplitude to obtain a circle whose radius is equal to the radius of the CRT s outer graticule circle NOTE It may be necessary to adjust the HORIZ POS and VERT POS controls to locate the average of the trace over the outer graticule circle g Adjust A2R21 Phase Adjust A1R37 Recorder Gain Adjust and A3R20 Pattern Shape for the best circle The trace must be less than 3 mm from the outer graticule circle around the entire circle 5 6 Model 8414 Section V Adjustment Procedures ADJUSTMENT PROCEDURE NETWORK ANALY ZER OSCILLATOR MAINFRAME HP 8414A SWEEP OSCILLATOR EEFE 99 30 dBm NETWORK ANALYZER REFERENCE CHANNEL INPUT ONLY 20 dB ATTENUATOR NOTES FOR 8407A NETWORK ANALYZERS CONNECT THE SWEEP 280 kHz OSCILLATOR VTO OUTPUT TO THE 8407A VTO INPUT 100 mV EQUIPMENT OSCILLATOR cee a ee HP 200 CD NETWORK 2 HP 8410A 8411A OR HP 8407A SWEEP OSCILLATOR HP 8690 SERIES WITH RF UNIT AS REQUIRED 20 dB ATTENUATOR HP 8491A Figure 5 2 Setup for Phase Recorder Gain and Pattern Shape Adjustments 5 7 Section V
35. directly proportional to the amplitude of the input signal Because the signal to the sine detector is shifted 90 degrees the output of the sine detector is equal to the amplitude of the signal at A2TP14 times the sine of the angle be tween the reference and test channel input signals A sine and the output of the cosine detector is equal to the amplitude of the signal at A2TP14 times the cosine of the angle between the reference and test channel input signals cos Buffer Amplifiers The Buffer Amplifiers are differential amplifiers with a voltage gain of about ten Phase shift through these amplifiers is negligible Low Pass Filter The low pass filters filter out frequencies above 10 kHz with a capacitor to ground and a feedback loop which couples high frequency signals from the output back to the input 180 degrees out of phase The low frequency voltage gain through these filters is about two 51 Switch 51 the test position opens the signal path from the filter output so that an external volt age can be applied at the rear panel horizontal and vertical output connectors for troubleshooting the deflection circuits Vertical and Horizontal Deflection Drivers The deflection drivers are differential amplifiers with push pull outputs Both output voltages of each driver are at about 55 Vdc with no input signal applied A 1V change at either driver s input should provide about a 10V change in each o
36. of Aerovox Myrtle Beach S C 04354 Precision Paper Tube Co Wheeling IN 04404 Dymec Division of Hewlett Packard Co Palo Alto Cal 04651 Sylvania Electric Products Microwave Device Div Mountain View Cal 04673 D ota Engr Inc Culver City Cal 04713 otorola Inc Semiconductor Prod Div MEL I Phoenix Arizona 04732 Filtron Co Inc Western Div Culver City Cal 04773 Automatic Electric Co Northlake 11 04796 Sequoia Wire Co e Redwood City Cal 04811 Precision Coil Spring Co El Monte Cal 04870 P M Motor Company Westchester 04919 Component Mfg Service Co W Bridgewater Mass 05006 Twentieth Century Plastics Inc Los Angeles Cal 05277 Westinghouse Electric Corp Semiconductor Dept Youngwood Pa 00015 46 Revised October 1969 Code 05347 05397 05574 05593 05616 05624 05728 05729 05783 05820 06004 06090 06175 06402 06540 06555 06666 06751 06812 06980 07088 07126 07137 07138 07149 07233 07256 07261 07263 07322 07387 07397 07700 07829 07910 07933 07980 08145 08289 08358 08524 08664 08717 08718 08727 08792 08806 08984 09026 09134 09145 09250 09353 09569 09922 10214 The following code numbers are from the Federal Supply Code for Manufacturers Cataloging Handbooks H4 1 Name to Code and H4 2 Code to Name and their latest supplements The date of revision and the date of the supplements used appear at the bottom of e
37. otherwise noted P O part of Asterisk denotes a factory selected value Value shown is typical Capacitors may be omitted or resistors jumpered Screwdriver adjustment control Encloses front panel designations 71 Enclosesrear panel designation Circuit assembly borderline Other assembly borderline Heavy line with arrows indicates path and direction of main signal Heavy dashed line with arrows indicates path and direction of main feedback Wiper moves toward CW with clockwise rotation of control as viewed from shaft or knob Numbers in circles on circuit assemblies show locations of test points Encloses wire color code Code used MIL STD 681 is the same as the resistor color code First n mber identifies the base color second number the wider stripe and the third number identifies the narrower stripe E g denotes white base yellow wide stripe violet narrow stripe Voltage regulator breakdown diode Denotes Field Effect transistor FET with N type base Denotes FET with P type base Denotes Capacitive diode Varicap varactor Denotes Silicon Controlled Rectifier P Type Metal Oxide Substrate FET MOSFET N Type Metal Oxide Substrate FET MOSFET Figure 8 3 Schematic Diagram Notes Model 8414 Section VIII Service TROUBLESHOOTING SETUP NETWORK ANALYZER SWEEP OSCILLATOR MA INFRAME HP 8414A OSCILLATOR x Q Q Q
38. signals are fed to both the sine detector and the cosine detector Sin and Cos Detectors The sine and cosine detectors are balanced modulator phase detectors The signals from the phase splitter limiter turn the detectors on one at a time during alternate half cycles of the turn on signal Any signal appearing at a detector s input when it is turned on will be passed through the detector and the detector s output capacitor will charge to the average of the signal passed through the detector When the input signal is in phase with the turn on signal the detector s output is maxi mum positive When the input signal is 180 degrees out of phase with the turn on signal the detector s output is maximum negative When the input signal is exactly 90 degrees with respect to the turn on signal the average of the detector s output signal is zero Therefore a detector s output can vary from a maximum positive zero degree phase difference to a maximum negative 180 degree phase differ ence and back to a maximum positive 360 degree phase difference The magnitude of the maximum positive and negative detector output voltages is directly proportional to the amplitude of the input signal Because the signal to the sine detector is shifted 90 degrees the output of the sine detec tor is equal to the amplitude of its input signal times the sine of the angle between the reference and test channel input signals A s
39. spot on the CRT where the arrowhead of the vector would appear See Figure 8 8 This can be interpreted into amplitude A and phase 6 by the use of the built in polar graph on the face of the CRT To produce the illuminated spot on the CRT the amplitude and phase of the polar signal must be resolved into X horizontal and Y vertical rec tangular components as shown in Figure 8 8 These X and Y signals are applied to the horizontal and vertical deflection plates producing a spot on the CRT representing the arrowhead of the vector 7 SINS Figure 8 9 Vector Graph of a Typical Test Signal Conversion from the two signals applied to the input of the Polar Display to the rectangular X Y signal is accomplished by a 90 degree phase shifter and two phase detector circuits To understand the operation of these circuits a brief discussion of the trigonometry used is presented Figure 8 9 shows a vector diagram in the form of a right triangle of the signals discussed From trigonometric relationships in a right triangle Adjacent Side _ X Component Coso Hypotenuse A therefore X Component Also Opposite Side _ Y Component Hypotenuse A therefore Y Component 9 sin detector circuit produces voltage with the value of A sin This voltage is amplified and applied to the Y axis or vertical deflection plates The cos detector
40. to 2000V dc Section VIII Service SCHEMATIC 4 CIRCUIT DESCRIPTION CRT CRT POWER SUPPLIES 150V Power Supply The 150V power supply is a regulated supply Reference Amplifier A3Q2 senses a change in output voltage amplifies that change and inverts the polarity of the change The output of the reference amplifier changes the con duction of Driver A3Q1 which changes the con duction of Series Regulator A3Q3 The series regu lator acts as a variable resistor whose resistance varies inversely with collector current i e if the series regulator s base voltage goes in a negative direction its collector current decreases dropping more voltage across the regulator decreasing out put voltage High Voltage Oscillator High Voltage Oscillator Q1 Q2 is a free running multivibrator whose frequency 20 kHz 2 kHz is determined by the L and C of T1 s primary CRT Cathode Supply One of T1 s secondary windings supplies power to the CRT s cathode 2 50 mV P P 8 18 supply and anode supply The cathode supply consists of a half wave rectifier and pi section filter Its output voltage is about 2450 Vdc In addition to providing dc bias to the CRT cathode the cathode supply s output voltage is used in a voltage divider to 150V to provide about 2000 to the front panel focus control CRT Anode Supply The anode supply consists of a voltage doubler and pi section filter Its output voltage is a
41. to superimpose the trace on the horizon tal graticule line 5 4 Model 8414 Section V Adjustment Procedures ADJUSTMENT PROCEDURE NETWORK ANALY ZER OSCILLATOR MAINFRAME HP 8414A SWEEP OSCILLATOR Q 8 94 e NENW E MESE ODO Horizt Heer 100 41 FOR 8410A NETWORK ANALYZERS 5 20 dBm TO REFERENCE CHANNEL INPUT NLY 20 dB TERMINATION ONL ATTENUATOR kHz NOTE SWEEP OSCILLATOR NOT REQUIRED FOR 8407A NETWORK ANALYZERS EQUIPMENT 05 200 0 NETWORK HP 8410A 8411A OR HP 8407A SWEEP 05 HP 8690 SER IES WITH RF UNIT AS REQUIRED 20 dB HP 8491A TERMINATION HP 10100 OR HP PART NO 1250 0839 WITH ADAPTER 1250 0831 Figure 5 1 Setup for Trace Alignment and Vertical Gain Adjustment k Without changing oscillator signal level connect the oscillator to the VERTICAL output and terminate the HORIZONTAL output m Adjust A2R57 CRT Gain Adj for a 10 cm vertical deflection n Disconnect the oscillator and termination from VERTICAL and HORIZONTAL outputs and set function switch S1 to NORMAL position 5 5 Section V Model 8414A Adjustment Procedures ADJUSTMENT PROCEDURE 5 10 PHASE
42. 0 5 125V AC DC EXTRUSION RUBBER COVER PLUG IN BOTTOM TRIM NAMEPLATE EXTRACTOR FOOT PLUG IN SUPPORT CAPACITOR INSULATORIFOR R3B FOCUS TGP COVER ASSYz PLUG IN COIL ALIGNMENT TRADEMARK PLATE IDENTIF ICATION POLAR DISPLAY COIL CHOKE 51 0 UH 5 COIL MOLDED CHOKE 240 0 UH COIL CHOKE 3000 UH 5 TRANSFORMER TRANSFORMER COIL FXD 400 UHY CABLE CRT CABLE ASSY TEST CHANNEL INPUT COVER REAR CRT PANEL FRONT PANEL REAR STANDARD SMITH CHART SET VIEWING STANDARD SMITH CHART SET PHOTO EXPANDED SMITH CHART SET VIEWING EXPANDED SMITH CHART SET PHOTOGRAPHIC COMPRESSED SMITH CHART SET VIEWING COMPRESSED SMITH CHART SET PHOTO RETURN LOSS VIEWI NG RETURN 1055 BEZEL ASSY POWER SUPPLY ASSY 5100 V STAND OFF CABLE ASSY TEST CHANNEL INPUT ELECTRON TUBEs CRT ASSY COORDINATE CONVERTER ASSY Z AXIS MOD amp INTERCONNECTION ASSY PLUG IN CONNECTION M r 28480 28480 28480 81013 19121 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 Mfr Part No 2370 0001 2370 0003 2370 0013 39 0 6126 0018 320 0062 5000 3339 5020 3281 5020 3288 5040 027 5040 0401 5040 0421 5060 0239 5060 0409 7120 1254 7120 1574 9100 1630 9100 1641 9100 166
43. 00 jo 000000000000 bandwidth Output is not affected by the HORIZ POS control VERTICAL For driving X Y graphic re corders Direct coupled signal proportional to the vertical deflection signal 2 5V 100 ohms source impedance 10 kHz bandwidth Output is not affected by the VERT POS control Connector Makes all necessary connections with the Network Analyzer mainframe FOCUS Controls sharpness of trace INTENSITY Controls brightness of trace ILLUM For photography Brightens screen for contrast with the graticule Eliminates the need for an ultraviolet light in the oscil loscope camera Graticule Radial lines divide phase scale into ten degree parts Circles divide ampli tude scale into five linear parts Graticule center is amplitude zero Amplitude scale calibration depends upon setting of the Net work Analyzer controls Figure 3 1 Model 8414A Front and Rear Panel Features 3 2 Model 8414A 3 12 Polar Display of Return Loss 3 13 With the Network Analyzer test channel gain set to the calibration value giving an indica tion of 1 0 full scale a Return Loss overlay such as the one shown in Figure 3 2 may be used on the CRT to convert reflection coefficient mag nitude to return loss The Return Loss overlay has concentric circles calibrated in dB with zero at the outer circle 1 dB increments to 10 dB and an inner circle representing 20 dB For return loss measurements of greater than
44. 01 0040 DICDE SILICON 30MA 30WV A2CR7 1901 0040 DIODE SILICON 30MA 30WV A2J1 1250 0835 CONNECTOR RF PC MOUNT 211 9100 1664 COIL CHOKE 3000 UH 5 212 9100 1641 COIL MOLDED CHOKE 240 0 UH A2L3 9100 1641 COIL MOLDED CHOKE 240 0 UH A2L4 9100 1641 COIL MOLDED CHOKE 240 0 UH A2L5 9100 1641 COIL MOLDED CHOKE 240 0 UH A2L6 9100 1 41 COIL MOLDED CHOKE 240 0 UH 217 9100 1664 COIL CHOKE 3000 UH 5 218 9100 1641 COIL MOLDED CHOKE 240 0 UH A2L9 9100 1641 COIL MOLDED CHOKE 240 0 UH A2L10 9100 1641 COIL MOLDED CHOKE 240 0 UH A2L11 9100 1641 COIL MOLDED CHOKE 240 0 UH A201 1853 0020 Q SI PNPLSELECTED FROM 2N3702 A202 1854 0 71 0 51 NPN SELECTED FROM 2 3704 203 1853 0 20 Q SI PNP SELECTED FROM 2N3702 204 1854 0 71 0 51 NPN SELECTED FROM 2853704 205 1854 0 71 0 SI NPN SELECTED FROM 2N3704 A206 1854 0C71 0 51 NPN SELECTED FROM 2N3704 A207 1854 0475 9 51 NPN A208 1854 0575 Q SI NPN A209 1853 0020 0 51 PNP SELECTED FROM 2 3702 A2010 1854 0C71 0 51 NPN SELECTED FROM 2N3704 2011 1854 0475 Q SI NPN 2012 1854 0475 0 51 NPN A2013 1852 0020 Q SI PNP SELECTED FROM 283702 2014 1854 0 71 0 51 NPN SELECTED FROM 2N3704 2015 1853 0020 0 51 PNP SELECTED FROM 2N3702 A2016 1854 0222 Q SI NPNLSELECTED FROM 2N3440 2017 1853 0020 Q SI PNP SELECTED FROM 2N3702 A2018 1854 0232 0 51 NPNLSELECTED FROM 2N3440 2019 1852 0020 Q SI PNPCSELECTED FROM 2N3702 2 20 1854 0 71 Q SI NPN SELECTED FROM 2 3704 A2021 1854 0 71
45. 1010 1852 0051 Q SI PNP INSTALLED IN H26 8414A ONLY 1011 1854 0071 0 51 NPNLSELECTED FROM 2N3704 INSTALLED IN H26 8414A ONLY AIRI 0698 3151 R FXD MET FLM 19 6K 1 1 8 A1R2 0698 3157 R FXD MET FLM 19 6K 1 1 8 A1R3 0698 3157 R FXD MET FLM 19 6K 1 1 8 A1R4 0698 0083 R FXD MET FLM 1 96K OHM 1 1 8W 1 5 0757 0290 R FXD MET FLM 6 19K OHM 1 1 8W A1R6 0751 0438 R FXD MET FLM 5 11K 1 1 8W ALR 0757 0280 R FXD FLM LK OHM 1 1 8W AIRS 0698 3157 R FXD MET FLM 19 6K 1 1 8W A1R9 0757 0280 R FXD MET FLM OHM 1 1 8W A1R10 0757 0442 R FXD MET FLM 10 0 1 1 8W M M See introduction to this section for ordering information 6 2 Model 8414 Reference Designation A1R11 1 12 A1R13 ALR14 1 15 1 16 1 1 1 18 1 19 1620 A1R21 A1R22 A1R23 A1LR24 A1R25 A1R26 A1R27 1828 AIR29 A1R30 A1R31 A1R32 A1R33 A1R34 A1R35 1935 A1R37 A1R38 A1R39 ALR40 A1R41 1 1 1 2 A1XA3 A2 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 A2CS 2 10 Table 6 2 Parts List Indexed by Reference Designation Cont Section VI Replaceable Parts W 1 8W W 1 8W 1 2W 1 8W 1 8W 1 8W 1 8W 1 8W 1 8 W W W 1 8W 1 8W 1 8W 1 8W 1 84 1 8W iw lw 1 8W 1 8W 1 8W 1 8N 1 8W W W 1 8W 100VDCW 100VDCW 100VDCW 10CVDCW 100VDCW Part No Description 0757 0442 R FXD MET FLM 10 0K 1 1 8 0698 315
46. 3 95236 95238 95263 95265 95275 95348 95354 95566 95712 95984 95987 96067 96095 96256 96296 96396 96330 96341 96501 96508 96733 96881 97464 97539 97979 97983 98141 98159 98220 98278 98291 98376 98410 98731 98734 98821 98978 99109 99313 99378 99515 99707 99800 99848 99928 99934 99942 99957 Manufacturer Address Raytheon Co Comp Div Ind Comp Operations Quincy Mass Loveland Colo Newark N J Scientific Electronics Products Inc Wagner Elect Corp Tung Sol Div Curtiss Wright Corp Electronics Div East Patterson N J Chester Pa Bellwood Ill Brooklyn N Y Worcester Mass Chicago Ill Boston Mass Diania Fla Woodside N Y Long Island N Y Sheridan Wyo Bridgeport Conn Bloomfield N J Rolling Meadows Ill South Chester Corp Wire Cloth Products Inc Automatic Metal Products Co Worcester Pressed Aluminum Corp Magnecraft Electric Co George A Philbrick Researchers Inc Allies Products Corp Continental Connector Corp Leecraft Mfg Co Inc National Coil Co Vitramon Inc Gordos Corp Methode Mfg Co Arnold Engineering Co Marengo 111 Dage Electric Co Inc Franklin Ind Siemon Mfg Co Wayne Ill Weckesser Co Microwave Assoc West Inc Hi Q Div of Aerovox Corp Thordarson Meissner Inc Solar Manufacturing Co Microswitch Div of Minn Honeywell Carlton Screw Co e Microwave As
47. 30 United Shoe Machinery Corp Beverly Mass 90179 US Rubber Co Consumer Ind amp Plastics Prod Div Passaic N J 90763 United Carr Fastener Corp Chicago 90970 Bearing Engineering Co e San Francisco Cal 91146 Cannon Elect Inc Salem Div Salem Mass 91260 Connor Spring Mfg Co San Francisco Cal 91345 Miller Dial amp Nameplate Co E1 Monte Cal 91418 Radio Materials Co Chicago Hl 91506 Augat Inc Attleboro Mass 91637 Dale Electronics Inc Columbus Nebr 91662 Elco Corp Willow Grove Pa 91737 Gremar Mfg Co Inc Wakefield Mass 91827 Development Redwood City Cal 91886 Malco Mfg Co Inc Chicago Ill 91929 Honeywell Inc Micro Switch Div Freeport Ill 91961 Nahm Bros Spring Co Oakland Cal 92180 Tru Connector Corp Peabody Mass 92367 Elgeet Optical Co Inc Rochester N Y 92607 Tensolite Insulated Wire Co Inc Tarrytown N Y 92702 Magnetics Corp Westbury Long Island N Y 92966 Hudson Lamp Co woe Kearney N J 93332 Slyvania Electric Prod Inc Semiconductor Div Woburn Mass 93369 Robbins amp Myers Inc Paliisades Park N J 93410 Stemco Controls Div of Essex Wire Corp MM Mansfield Ohio 93632 Waters Mfg Co Culver City Cal 93929 Controls e Livingston N J 94137 General Cable Corp Bayonne N J Code No 94144 94148 94154 94197 94222 94330 94375 94682 94696 9502
48. 4 MET FLM 4 22K OHM 1 0698 31 lt 3 R FXD FLM 3 83K 1 1 8 0698 3159 MET FLM 26 1K OHM 1 075 1 C853 MET FLM 51 1K OHM 14 0598 0083 R FXD MET FLM 1 96K 1 0698 0083 R FXD MET FLM 1 96K 1 0696 0083 R FXD FLM 1 96K OHM 15 0698 0083 R FXD MET FLM 1 96K 1 069 8 0083 R FXD MET FLM 1 96K OHM 1 0698 0083 R FXD FLM 1 96K 1 0698 3157 R FXD 19 6K 1 1 8 0698 3157 R FXD MET FLM 19 6K 1 1 8 0698 3157 R FXD MET FLM 19 6K 1 1 8 NOT ASSIGNED 0698 0083 R FXD MET FLM 1 96K OHM 1 0698 0083 R FXD MET FLM 1 96K 1 0698 0083 R FXD FLM 1 96K 1 0698 0083 R FXD MET FLM 1 96K OHM 1 0751 0123 R FXD MET FLM 34 8K HM 1 FACTORY SELECTED PART 0757 0123 R FXD FLM 34 8K 1 FACTORY SELECTED PART 2100 1770 R VAR WW 100 OHM 5X TYPE H 2100 1770 R VAR WW 100 OHM 5 TYPE H 069 8 0083 R FXD MET FLM 1 96K 1 0698 3156 R FXD MET FLM 14 7K OHM 1 0698 0065 R FXD MET FLM 2 61K 1 0757 0279 R FXD MET FLM 3 16K OHM 1 0751 0439 R FXD MET FLM 6 81K 1 0698 3157 R FXD MET FLM 19 6K 1 1 8 0698 3157 R FXD MET FLM 19 6 1 1 8 0698 3154 FLM 4 22K OHM 1 NOT ASSIGNED 1251 0458 22 5 1251 0458 CONNECTOR PC 22 5 08414 6028 ASSY COORDINATE CONVERTER 0160 2917 C FXD CER 0 05 UF 80 20 100 0160 0168 C FXD MY 0 1 UF 10 200VDCW 0160 2930
49. 4 9100 2421 9100 2422 9140 0051 00140 61606 08410 61007 08414 0001 08414 0003 08414 0005 08414 0009 08414 0010 08414 0011 08414 0012 08414 0021 08414 0022 08414 0023 08414 0024 08414 2014 08414 6003 08414 6004 08414 6014 08414 6016 08414 6028 08414 6029 08414 6030 TQ ee pad pmd ee e 2 a e N a N ien See introduction to this section for ordering information Model 8414A Section VI Replaceable Parts Table 6 4 Code List of Manufacturers Code No Manufacturer Address 00000 U S A Common Any supplier of U S 00136 McCoy Electronics Mount Holly Springs Pa 00213 Sage Electronics Corp Rochester N Y 00287 Cemco Inc Danielson Conn 00334 Humidial 2 Colton Calif 00348 Mictron Co Inc Valley Stream N Y 00373 Garlock Inc Cherry Hill N J 00656 Aerovox Corp New Bedford Mass 00779 Amp Inc Harrisburg Pa 00781 Aircraft Radio Corp Boonton N J 00809 Croven Ltd m Whitby Ontario Canada 00815 Northern Engineering Laboratories Inc Burlington Wis 00853 Sangamo Electric Co Pickens Div Pickens S C 00866 Engineering Co City of Industry Cal 00891 Carl E Holmes Corp Los Angeles Cal 00929 Microlab Inc PP Livingston N J 01002 General Electric Co Capacitor Dept Hudson Falls N Y 01009 Alden Products Co Brockton Mass 01121 Allen Bradley Milwaukee Wis 01255
50. 4A through a rear panel connector These signals are resolved into vertical and horizontal deflection signals and applied to the CRT where they are displayed in polar form Signals from the horizontal and vertical amplifiers are available at rear panel output connectors for use with an exter nal X Y recorder or oscilloscope Controls on the front panel provide centering focus and intensity adjustments for the CRT display MECHANICAL SHOCK Do not bump or jar the Polar Display as misalignment of the CRT gun may result MAGNETIC FIELDS Do not place the Polar Display near a sweep generator containing a BWO which has an unshielded magnet or the CRT will be permanently magnetized causing poor focus Separate the 8414A from any magnetic source by at least two feet 3 3 PANEL FEATURES 3 4 Front and rear panel controls connectors and indicators are described in Figure 3 1 In this figure the numbers on the illustrations match the description numbers 3 5 MEASUREMENT PROCEDURES 3 6 General measurement procedures are given in Figures 3 9 and 3 10 Measurement procedures using a specific transducer are given in the Operat ing and Service or Operating Note for the particular transducer 3 7 OPERATING INFORMATION 3 8 Polar Display of Reflection Coefficient and Phase Angle 3 9 If the device under test has an impedance of 50 ohms at all frequencies in the range being swept the display of its complex reflect
51. 50 1 2100 09 2 R VAR FLM 50K OHM 20 3 49 28480 2100 0942 1 2100 1159 R VAR WW 2K OHM 5 TYPE V IW 28480 2100 1759 1 2100 1760 R VAR WW 5K OHM 5 TYPE V 1W 28480 2100 1760 2 2100 1770 R VAR WW 100 OHM 5 TYPE H IW 286480 2100 1770 2 2100 1808 RsVAR 100 OHM 20 LIN 1 2W 28480 2100 1808 1 2100 1910 R VAR 100K OHM 20 3 4W 28480 2100 1910 2 2100 1969 R VAR 1 MEGOHM 203 3 4W 28480 2100 1969 1 2100 2415 R VAR OHM 20 LIN 1 2W 28480 2100 2415 2 2100 2708 R3VAR COMP 5K 5 20 30 LIN lW 28480 2100 2708 1 2210 0001 SCREW MACHINE SST FH 4 40X3 16 97934 OMD 1 See introduction to this section for ordering information 6 13 Section VI Replaceable Parts Table 6 3 Parts List Indexed by HP Part Number Cont Model 8414A 49 Part No 2310 0001 2370 0003 2370 0013 3101 0044 3101 0973 4320 0062 5000 3339 5020 3281 5020 3288 5040 0274 5040 0401 5040 0421 5060 0239 5060 0409 1120 1254 1120 1574 9100 1630 9100 1641 9100 1664 9100 2421 9100 2422 9140 0051 00140 61606 08416 61007 08414 0001 08414 0003 08414 0005 08414 0009 08414 0010 08414 0011 08414 0012 08414 0021 08414 0022 08414 0023 08414 0024 08414 2014 08414 6003 08414 6004 08414 6014 08414 6016 08414 6028 08414 6029 08414 6030 6 14 Description SCREW SST FLAT HD 6 32 X 0 250 SCREW SST FLAT HD 6 32 X 0 500 SCREW SST FLAT HD PHL DR 6 32 X 3 8 SWITCHSPUSHBUTTON SPST SWITCH SLIDE
52. 66 825 1 15 1 1 20 lt CURRENT 14 SOURCE zov Heu Q5 13 1854 0023 csi 0 01 lt lt 2 0 01 1 THIS PAGE NOTES R73 I SEE FIGURE 8 3 FOR GENERAL 9 6 NOTES MEASUREMENT CONDITIONS 20 2 TO CHASSIS ONLY WHEN 8414 15 196 ed INSTALLED IN MAIN FRAME T oo PHASE SPLITTER LIMITER F REFER TO TABLE 7 2 REFERENCE DESIGNATIONS NO A2 A4 wl PREFIX ASSY ASSY ASSY ASSY Jl 2 Ci 5 7 1 13 20 29 33 35 42 51 Jl PI 2 wi CRI 5 PI JI 1 3 7 9 01 10 19 25 RI 38 63 85 109 112 UNASSIGNED 2 6 A2CR4 8414A CO ORDINATE CONVERTERS I OF 2 1146 REFERENCE DESIGNATIONS WITHIN OUTLINED ASSEMBLIES ARE ABBREVIATED FULL DESIGNATION IN CLUDES ASSEMBLY NUMBER eg OF ASSEMBLY A 15 AIRI DESIGNATIONS OF OTHER COMPONENTS ARE COMPLETE AS SHOWN 90 SIN PHASE SHIFTER DRIVER DETECTOR PHASE ADJUST Q2 2 R20 2150 2 R23 2000 825 Q9 1853 0 QI 1853 0020 430pF 430pF IOK c37 c38 iov CRS 022 025 1854 022 R73 19 6 2 2 2 BASE DIAGRAM 3NATION WITHIN OUTLINED ABBREVIATED FULL DESIGNATION IN Y NUMBER eg OF ASSEMBLY Al NATIONS OF OTHER COMPONENTS ARE 5 N n DRIVER DETECTOR Fij Section VIII
53. 8 348 OHM 1 1 8W 51 1K OHM 1 1 8W 100K 1 1 8W 1 10K OHM 1 1 8 7 50 1 1 8W 42 2K 1 1 8 16 2K OHM 1 1 8W 4 22K OHM 1 1 8W 10 0K 1 1 8 10 0 1 1 8 2 87 OHM 1 1 8W 51 1K OHM 1 1 8W 100K 1 1 8W 1K OHM 0 1 1 8W 0 1 1 8 348 OHM 1 1 8 See introduction to this section for ordering information Section VI Replaceable Parts Reference Designation A2R94 A2RS5 A2R96 A2R97 A2R98 A2R99 A2R100 A2R101 A2R102 A2R103 A2R104 A2R105 A2R106 A2R107 A2R108 A2R109 A2R110 A2R111 A2R112 A2S1 A2A1 A2A2 A3 1 2 A3C5 A3C6 A3C8 A3C9 A3CR1 A3CR2 A3CR3 A3CR4 A3CR5 A3CR6 A3CRT A3L1 A301 6 8 Model 8414A Table 6 2 Parts List Indexed by Reference Designation Cont Part No 0757 0440 0698 3450 0698 0083 0698 3154 0757 0442 0757 0465 0698 3157 0698 3440 0757 853 0757 0290 0757 0279 0757 0863 0757 0465 0698 2157 0698 3440 0757 0421 0757 0421 0757 0442 0757 0442 3101 0973 1901 0557 1901 0557 08414 6003 0180 0361 0160 6168 0170 0018 0180 0013 0150 0121 0160 2054 0160 2054 0160 0151 5040 0401 0160 2054 1901 0029 1901 0 33 1902 3428 1902 3119 1901 005C 1901 0652 1901 0632 9140 0051 1854 0232 Description Note MET FLM 7 50K 1 1 8W R F
54. 80 20 LOOVDCW 2 31 0160 2930 C FXD CER 0 01 UF 480 208 100VDCW A2C32 0160 2930 CER 0 01 UF 80 20 100VDCWH A2C33 0160 2917 C FXD CER 0 05 UF 480 205 100VDCW A2C34 0160 2917 C CER 0 05 UF 80 20 LOOVDCW 2 35 0160 2930 C FXD CER 0 01 UF 480 208 100VDCW A2C36 0160 2204 C FXD MICA 100PF 5X A2C3T 0160 0939 C FXO MICA 430 PF 5 300 VDCW A2C38 0160 0939 C MICA 430 PF 5 300 VDCW A2C39 0160 2210 MICA 470 5 A2C40 0160 2208 FXD MICA 330 PF 5 300V0CW A2C41 0180 0116 ELECT 6 8 UF 10 35VDCW 2 42 0180 0116 C FXD ELECT 6 8 10 35VDCW A2C43 0140 0157 C FXD MICA 1857 PF 1 2 4 0140 0157 C FXD MICA 1857 1 A2C45 0180 0116 ELECT 6 8 UF 10 35VDCW 2 46 0180 0116 C FXD ELECT 6 8 UF 10 35VDCW 2 47 0160 2208 MICA 330 5 300VDCW 2 48 0140 0157 C FXD MICA 1857 1 2 49 0150 0C82 C FXD CER 8200 PF 500VDCW A2C50 0160 2917 C CER 0 05 UF 80 20 100VDCW A2C51 0140 0198 C FXD MICA 200 PF 5 FACTORY SELECTED PART A2CR1 1901 0040 DIODE SILICON 30MA 30WV A2CR2 1901 0040 DIODE SILICON 30MA 30WV A2CR3 1901 0040 DIODE SILICON 30MA 30WV A2CR4 NOT ASSIGNED A2CR5 1902 0025 DIODE BREAKDOWN 10 0V 5 400 MW See introduction to this section for ordering information Model 8414A Section VI Replaceable Parts Table 6 2 Parts List Indexed by Reference Designation Cont Reference Lon Designation Part No Description Note A2CR6 19
55. 8414 0003 PANEL FRONT 10 5020 3288 PIN EXTRACTOR 11 5000 3339 COVER PLUG IN BOTTOM 11 2370 0003 SCREW SST FLAT HD 6 32 X 0 500 12 5040 0274 FOOT PLUG IN See introduction to this section for ordering information 6 11 Section VI Replaceable Parts Model 8414A Table 6 3 Parts List Indexed by HP Part Number Part No Description 7 Mfr Part No TQ 0140 0157 C FXD MICA 1857 PF 1 0140 0157 6 0140 0196 C2FXD MICA 150 5 0140 0196 1 0140 0198 CsFXD MICA 200 PF 5 RDM15F201J3C 1 0150 0036 CER 470 20 6 6KV4TO 20 2 0150 0082 C FXD CER 8200 SOOVDCW Di 4 2 0150 0121 CsFXD CER 0 1 UF 80 20 5OVDCW 5C50BIS CML 2 0160 0151 Cs FXD CER 4700 PF 80 20 4000VDCW DAO45 040CD 2 0160 0168 CsFXD MY 0 1 UF 10 200VDCW 0160 0168 2 0160 0939 MICA 430 PF 5 300 VDCMW 0160 0939 4 0160 2054 C FXD 0 015 10 3000VDCW 5153 3 5 3 0160 2204 MICA 100PF 5 RDM15F101J3C 2 0160 2208 C FXD MICA 330 5 300VDCW 0160 2208 4 0160 2210 C FXD MICA 470 5 0160 2210 2 0160 2917 CER 0 05 UF 0 204 100VDCW TYPE TA 13 0160 2930 C FXD CER 0 01 UF 80 20 100VDCW 6 0170 0018 MY LUF 5 200VDCW TYPE 621M 10552 1 0180 0013 CsFXD ELECT 100UF 100VDCW D33067 1 0180 0116 ELECT 6 8 UF 10 35VDCW 0180 0116 8 0160 0269 C FXD ELECT 1 0 UF 50 10 150VDCW 30D 105F150BA2 DSM 1 0180 0361 C FXD ELECT 10 50 10 350VDCW 0180 0361 1 0340 0005 INSULATGR BUSHING CE
56. 8414 6030 ASSY PLUG IN CONNECTION A4J1 NOT SEPARATELY REPLACEABLE A4J2 1250 0835 CONNECTOR RF PC MOUNT A4P1 NOT SEPARATELY REPLACEABLE J1 1250 0083 CONNECTOR BNC J2 1250 0C83 CONNECTOR BNC J3 1254 0083 CONNECTOR BNC J4 1250 0583 CONNECTOR BNC J5 1251 1016 CONNECTOR 2 PIN J5 0340 0 5 INSULATOR BUSHING CERAMIC J5 0520 0118 SCREW NYLON RD HD SLOT DR 2 56 J6 1250 0663 CONNECTOR BNCCINSTALLED IN H26 8414A ONLY 5050 0702 WASHER INSULATING 2 EA 11 5060 0409 COIL ALIGNMENT P1 THRU P3 NOT ASSIGNED P4 1251 1017 CONNECTOR 2 PIN MATES 1251 1016 See introduction to this section for ordering information Section VI Model 8414A Replaceable Parts Table 6 2 Parts List Indexed by Reference Designation Cont Reference Part No Designation Description Note 1854 0012 0340 0162 1854 0612 0340 0162 1854 0237 0340 01 2 2100 2415 2100 2415 2100 27C8 210C 18C8 2100 0150 3101 0044 9100 2421 9100 2422 08414 6016 08414 6C14 08410 61097 08410 6020 00140 61696 1200 0408 1220 0037 08414 0 09 08414 0021 08414 0022 08414 CC24 08414 CC23 0 8414 0010 08414 0011 08414 0012 5040 0421 9340 0CC5 C370 0C 684 0370 01C7 0370 0134 0522 0118 0 51 INSULATOR TRANSISTOR 0 51 NPN INSULATOR TRANSISTOR Q SI NPN INSULATOR TRANSISTOR R VAR COMP 1K OHM 20 LIN 1 2W R VAR COMP 1K 202 LIN 1 2W R VAR COMP 5K 5 20 30 LIN 1W R VA
57. CER 0 01 UF 80 20 100VDCW 0160 2917 C FXD CER 0 05 UF 80 20 0160 2917 CER 0 05 UF 80 20 NOT ASSIGNED 0160 2917 C FXD CER 0 05 UF 80 20 0160 2930 CER 0 01 UF 80 20 0160 2917 C FXO CER 0 05 UF 80 20 0140 0156 C MICA 150 PF 5 See introduction to this section for ordering information Note 6 3 Section VI Model 8414A Replaceable Parts Table 6 2 Parts List Indexed by Reference Designation Cont C Reference gs Part No Description Note A2C11 0160 2917 C FXD CER 0 05 UF 80 20 100VDCW 2 12 0160 2917 C FXD CER 0 05 UF 980 205 100VDCW 2 13 0160 2930 C FXD CER 0 01 UF 80 20 100VDCW A2C14 0160 2204 MICA LOOPF 55 2 15 0160 0939 C FXD MICA 430 PF 5 300 VDCW 2 16 0160 0939 C FXD MICA 430 5 300 VDCW 2 17 0160 2210 C MICA 470 PF 5 A2C18 0160 2208 C FXD MICA 330 PF 5 300VDCM A2C19 0180 0116 C FXD ELECT 6 8 UF 10 35VDCW A2C20 9180 0116 ELECT 6 8 10 35VDCW A2C21 0140 0157 C MICA 1857 PF 1 A2C22 0140 0157 C FXD MICA 1857 PF 1 A2C23 0180 0116 C FXD ELECT 6 8 UF 10 35VDCW 2 2 0180 0116 ELECT 6 8 UF 10 35VDCW A2C25 0160 2208 C FXD MICA 330 PF 5 300VDCW A2C26 0140 0157 C FXD MICA 1857 PF 1 A2C27 0150 0 82 C FXD CER 8200 500VDCW A2C28 0160 2917 C FXD CER 0 05 UF 80 20 LOOVDCW A2C29 0160 2917 CER 0 05 UF 80 20 100VDCW 2 30 0160 2917 C FXD CER 0 05
58. CW dc working volts Wi with w watts WIV working inverse voltage WW wirewound w O without 6 1 Section VI Model 8414A Replaceable Parts Table 6 2 Parts List Indexed by Reference Designation Reference NM Designation 69 Part No Description Note Al 084 14 6029 ASSY Z AXIS MOD amp INTERCONNECTION CSTANDARDO Al 08414 61003 ASSY Z AXIS MOD INTERCONNECTION H26 A1C1 0180 0269 C FXD ELECT 1 0 UF 50 10 150 0 A1C2 0150 0121 C FXD CER 0 1 UF 80 20 S50VOCW AICRI 1901 0040 DIODE SILICON 30MA 30WV AICR2 1902 0041 DIODE BREAKDOWN 5 11V 5 A1CR3 1901 0040 DIODE SILICON 30MA 30WV A1CR4 1901 0040 DIODE SILICON 30MA 30WV A1CR5 1901 0C40 DIODE SILICON 30MA 30WV A1CR6 1901 0025 DIODE SILICON 100MA 1V A1CRT 1901 0025 DIODE SILICON 100MA 1V 1 1901 0025 DICDE SILICON 100 1 A1J1 NOT ASSIGNED A1J2 1251 1378 CONNECTOR PC 9 CONTACTS A1J3 NOT ASSIGNED 1 1 0490 0739 RELAY DPDT 2 INSTALLED IN H26 8414A ONLY 11 9100 1630 COIL CHOKE 51 0 UH 55 101 1853 0020 0 51 PNPCSELECTED FROM 2N3702 A102 1854 0071 Q SI NPN SELECTED FROM 2N3704 A103 1854 0232 0 51 NPN SELECTED FROM 2N3440 A104 1853 0020 0 51 PNP SELECTED FROM 2N3702 A105 1854 0C71 9 51 NPNCSELECTED FROM 2N3704 106 1854 0232 0 51 NPN SELECTED FROM 2N3440 107 1854 0222 0 51 NPN SELECTED FROM 2853440 108 1854 0 71 0 51 NPN SELECTED FROM 2N3704 INSTALLED IN H26 8414A ONLY 109 1853 0051 0 51 PNP INSTALLED IN H26 8414A ONLY A
59. Centering Vert Zero Adj for 0 10 mV Model 8414A Section V Adjustment Procedures ADJUSTMENT PROCEDURE NETWORK ANALY ZER MAINFRAME HP 8414A SWEEP OSCILLATOR 30 dBm TO NETWORK OSCILLOSCOPE ANALYZER REFERENCE CHANNEL INPUT ONLY NOTE FOR 8407A NETWORK ANALYZERS CONNECT THE SWEEP OSCILLATOR OUTPUT TO THE 8407A VTO INPUT EQUIPMENT NETWORK ANALYZER HP 8410A 8411A OR HP 8407A SWEEP OSCILLATOR HP 8690 SERIES WITH RF UNIT AS REQUIRED 05 5 HP 180A 1801A 1821A Figure 5 3 Setup for Manual Beam Centering Zero Adjustment 5 11 Section V Model 8414A Adjustment Procedures ADJUSTMENT PROCEDURE 5 15 PHASE ZERO ADJUSTMENT Select 2 51 DESCRIPTION The Network Analyzer mainframe phase vernier control has sufficient range to set the 8414A for zero phase reference for most applications however in some applications it is desirable to adjust the 8414A phase indication close to zero with the input signals in phase This can be accomplished by selecting a value for A2C51 that produces the desired indication Normal single frequency test and reference channel signals are applied to the Network Analyzer The mainframe 278 kHz test and reference channel output signals which are also the 8414A input signals are connected to a dual trace oscilloscope The Network Analyzer phase vernier control is
60. EFLECTION DRIVER DETECTOR AMPLIFIER PASS FILTER CRT POWER SUPPLIES ASSEMBLY CRT CATHODE SUPPLY HIGH VOLTAGE OSCILLATOR VOLTAGE DOUBLER CRT 2500 GRID SUPPLY 77 Focus DIFF AMPLIFIER EMITTER FOLLOWER eee O ILLUMINATION O intensity 150 V TO DEFLECTION ORIVERS POWER SUPPLY Section VIII Service PART OF ASSEMBLY J4 lt LVERTICAL j u VERTICAL OUT I 1 FOR 26 8414 I I 1 I CORR VERT IN H26 8414A VERTICAL DEFLECTION DRIVER LOW PASS FILTER CONNECTED IN STANDARD 8414A i 2 FUNCTION 5100 V VERTICAL CATHODE GRID FILAMENT FILAMENT Low HORIZONTAL PASS FILTER DEFLECTION DRIVER PART OF ASSEMBLY l H26 8414A ONLY 6 7 I CORR HORIZ IN FOR H26 8414A 2 t 1 21 gt HORIZONTAL OUT J3 FT 3 lt HORIZONTAL 4 SRT POWER SUPPLIES SSEMBLY _ CONNECTED IN CRT CATHODE STANDARD 8414 SUPPLY VOLTAGE DOUBLER T2 O ILLUMINATION 150 V TO DEFLECTION DRIVERS 150V POWER SUPPLY Figure 8 12 Detailed Block Diagram 8 11 Model 8414 Schematic 1 TR
61. ETWORK 2 HP 8410A 8411A OR HP 8407A SWEEP 05 HP 8690 SERIES WITH RF UNIT AS REQUIRED 05 05 180 1801 1821 Figure 5 4 Setup for Phase Zero Adjustment Select 2 51 5 13 Model 8414A 6 1 INTRODUCTION SECTION VI REPLACEABLE PARTS 6 2 This section contains information for order ing replacement parts Table 6 2 lists parts in alpha numerical order of their reference designators and indicates the description and HP stock number of each part together with any applicable notes Mis cellaneous parts are listed at the end of Table 6 2 Table 6 3 lists parts in alpha numerical order of their HP stock number and provides the following information on each part a b ELECT ENCAP EXT FH FILH FXD GE GL GRD Description Manufacturer of the part in a five digit code see list of manufacturers in Table 6 4 Wow Hou W H N H H f H n H H M W H I on d H H H H W H H H Table 6 1 assembly F motor FL battery J capacitor K coupler L diode LS delay line M device signaling lamp MK misc electronic part MP amperes H automatic frequency HDW control HEX amplifier HG HR beat frequency oscilla Hz tor beryllium copper IF binder head IMPG bandpass INCD brass INCL backward wave oscilla INS tor INT counterclockwise K ceramic cabinet mount only coefficient LH c
62. ICAL GY RED ORN BRN 25 245 T w o w v e amp uk w v w q 3 H 22 GRA GR BLU GRN 4 278 kHz 1 REFERENCE z z gt 2 SIGNAL o E lt INPUT 8 8 53 27 1 gt FOR H 26 8414A j n CORRECTED DISPLAY J a7 22 5 ENABLING INPUT 22 gt 4 2 HSVAC 1 0 AIRIS AIRS N gt gt 420v AUTO BEAM gt CENTER INPUT CORRECTED HORIZ DISPLAY INPUT 20V NC ED Y 6 20V e GND gt AIR2I 278 kHz TEST hk CHANNEL 7 AMPLITUDE SIGNAL INPUT N UNCORR 76 HORIZ OUT 390v gt UNCORR VERT OUT HORIZ IN Ki 152 20V NC 5 T 20 OUT KI gt an T BLANKING SIGNAL z 5 INPUT gt gt VERT IN a 82 20V 8 OUT ki P gt 3 CORR DISP Ki T gt a1 gt 2ov 9 AUTO B C RI T NC 3 i PI JI a REFERENCE DESIGNATIONS WITHIN OUTLINED CORRECTED VERTICAL ASSEMBLIES ARE ABBREVIATED FULL DESIGNATION IN DISPLAY INPUT CLUDES ASSEMBLY NUMBER eg RI OF ASSEMBLY J2 PI FOR 26 8414A 2 I AIRI DESIGNATIONS OF OTHER COMPONENTS ARE h _ COMPLETE AS SHOWN
63. III Operation 3 27 Expanded Smith Chart Overlay The ex panded Smith Chart enlarges the center of the standard Smith Chart to full scale so that the region close to 50 ohms can be analyzed in detail When the expanded Smith Chart is installed on the the gain of the Network Analyzer test chan nel amplifier must be increased by 14 dB to match the scale of the overlay This is accomplished by first noting the calibration setting of the test chan nel gain controls on the Network Analyzer for the standard Smith Chart This calibration value is added to 14 dB and the total value is set at the test channel gain controls 3 28 Compressed Smith Chart Overlay The compressed Smith Chart overlay provides a display in the negative real impedance region When the compressed Smith Chart overlay is installed on the CRT the gain of the Network Analyzer test channel amplifier must be decreased by 10 dB to match the scale of the overlay This is accomp lished by first noting the calibration setting of the test channel gain controls on the Network Ana lyzer for the standard Smith Chart Ten dB is then subtracted from this calibration value and the resultant number is set at the test channel gain controls 3 29 Marking Frequency on the Display 3 30 A rear panel marker INPUT connector ac cepts dc frequency marker pulses from the Sweep Oscillator Markers appear on the trace as bright spots This allows measurements to be made at s
64. Inst Corp Semiconductor Div Mountain View Cal Minnesota Rubber Co Minneapolis Minn Birtcher Corp The Monterey Park Cal Sylvania Elect Prod Inc Mt View Operations Mountain View Cal Cranford N J Chicago Hawthorne Cal Technical Wire Products Inc Bodine Elect Co Continental Device Corp Raytheon M g Co Semiconductor Div Mountain View Cal Hewlett Packard Co Boonton Radio Div Rockaway N J Los Angeles Cal Pomona Cal Niagara Fals Ontario Canada Los Angeles Cal Waterbury Conn Sun Valley Cal ITT Cannon Electric Inc Phoenix Div Phoenix Arizona National Radio Lab Inc Paramus N J CBS Electronics Semiconductor Operations Div of CBS Inc Lowell Mass General Electric Co Miniature Lamp Dept Cleveland Ohio Indianapolis Ind Costa Mesa Cal Houston Texas Burbank Cal Chicago Ill Newton Mass U S Engineering Co Blinn Delbert Co Burgess Battery Co Deutsch Fastener Corp Bristol Co The Sloan Company Mel Rain Babcock Relays Div Texas Capacitor Co Tech Ind Inc Atohm Elect Electro Assemblies Inc C amp K Components Inc Mallory Battery Co of Canada Lid Toronto Ontario Canada Norwalk Conn Los Angeles Cal Burndy Corp General Transistor Western Corp From Handbook Supplements H4 1 Dated AUGUST 1966 6 15 Section VI Replaceable Parts Code
65. JPLRAT NZ AND SERVICE MAN UAL 1 POLAR DISPLAY 8414A e HORIZ POS pA HEWLETT PACKARD CERTIFICATION Hewlett Packard Company certifies that this product met its published specifications at the time of shipment from the factory Hewlett Packard further certifies that its calibration measurements are traceable to the United States National Bureau of Standards to the extent allowed by the Bureau s calibration facility and to the calibration facilities of other International Standards Organization members WARRANTY This Hewlett Packard instrument product is warranted against defects in material and workmanship for a period of one year from date of shipment During the warranty period Hewlett Packard Com pany will at its option either repair or replace products which prove to be defective For warranty service or repair this product must be returned to a service facility designated by HP Buyer shall prepay shipping charges to HP and HP shall pay shipping charges to return the product to Buyer However Buyer shall pay all shipping charges duties and taxes for products returned to HP from another country HP warrants that its software and firmware designated by HP for use with an instrument will execute its programming instructions when properly installed on that instrument HP does not warrant that the operation of the instrument or software or firmware will be uninterrupte
66. L BE Oo 6Y 1 t j 8 2 I I75VAC l 150 CO ILLUM PI x cw 254 3 lt 100 P O ASSY AIXA3 08414 6003 4 OF 4 3 150V TO ASSEMBLIES Al AND A2 Figure 8 20 CRT High and Low Voltage Supplies and 150 Volt Supply Schematic Diagram 8 19 Section VIII Model 8414A Service PLUG IN CONNECTOR ON MAIN FRAME A4 ASSEMBLY 08414 6030 55 _ 278 kHz REFERENCE 24 gt SIGNAL 4 INPUT ET 1 gt CORRECTED DISPLAY 22 ENABLING INPUT I gt J 2 IT5VAC 20 NC 5 i I gt AUTO BEAM CENTER INPUT CORRECTED HORIZ DISPLAY INPUT 20V UNCORR HORIZ OUT UNCORR VERT OUT 20V 20V 1 Ne HE H DN i Sew 6 20 20V ate CORRECTED VERTICAL DISPLAY INPUT aa 3 aa Y PEE MD Je 1278 2 TEST J6 TEST IN CHAN AMPLITUDE 707777 SIGNAL INPUT Figure 8 21 Mainframe Plug In Connector Detail for H26 8414A 8 20 Model 8414 PLUG IN CONNECTOR ON MAIN FRAME 4 4 278 kHz INPUT l REFERENCE 24 SIGNAL 20 278 kHz TEST CHANNEL 7 AMPLITUDE SIGNAL INPUT gt 20V 4 4 20 4 BLANKING Figure 8 22 Mainframe Plug In Connector Detail for Standard 8414 REFE
67. M BUFFER AMPLIFIER X AXIS SIGNAL FROM BUFFER AMPLIFIER R86 10K R87 IOK 045 150v t 2 20V 20V 104 I lt lt lt V foo QI3 1853 0020 R49 1960 014 1854 0071 26 1857 20V V R94 6 8 028 7500 1853 0020 Y Q29 1854 0071 R93 R95 C48 348 42 2K 1857 026 Q27 1854 0221 R88 20v NORMAL 2870 T N WU o C44 R9I 1000 TEST Ter 1000 CRT R90 R97 LI 100K 4220 2404H 20V LOW PASS FILTER I I fco 8414A COORDINATE CONVERTERS 936 AIXA2 5 TO AIKI 2 oF 2 Axa277 A Ae S FILTER OkHz i 013 1853 0020 R60 100K 017 1853 0020 NORMAL 018 1854 0232 SI gt FUNCTION T Q28 1853 0020 R96 1960 330pF 029 1854 0071 48 R93 1857 348 Q30 1853 0020 Q32 Q33 1854 0232 5S FILTER fot VERTICAL DEFLECTION DRIVER 7 20 REFERENCE DI ASSEMBLIES Al CLUDES 55 IS AIRI DE COMPLETE AS NO I SE AIXA2 3 Y Y TO AIKI Section VIII Service REFERENCE DESIGNATIONS WITHIN OUTLINED ASSEMBLIES ARE ABBREVIATED CLUDES ASSEMBL
68. OHM 10 1 28480 0836 0002 2 1200 0037 SOCKET CRT TUBE 12825 197097 1 1200 0085 COVER PLATE CRT SOCKET 72825 9709 1 1 1250 0083 CCNNECTOR BNC 28480 1250 0083 5 1250 0835 CONNECTOR RF PC MOUNT 98291 50 051 0000 2 1251 0498 CONNECTOR PC 22 CONTACTS 28480 1251 0498 2 1251 1016 CONNECTOR 2 PIN 81312 JF2P 2S AB 1 1251 1017 CONNECTOR 2 MATES W 1251 1016 81312 JF2P 2S AB 1 1251 1378 9 CONTACTS 62660 64 17 1 1853 0020 0 51 PNPLSELECTED FROM 2 853702 28480 1853 0020 13 1853 0051 0 51 PNP 02735 2N4037 2 1854 0071 0 51 NPN SELECTED FROM 2 3704 28480 1854 0071 14 1854 0072 Q SI NPN 02735 2N3054 2 1854 0221 0 51 NPN REPLACEABLE BY 2N4044 28480 1854 0221 8 1854 0232 Q SI NPN SELECTED FROM 2N3440 28480 1854 0232 9 1854 0237 0 51 NPN 04713 2N3738 1 1901 0025 DIODE SILICUN 100 1 07263 FD 2387 3 1901 0029 DIODE SILICON 600 PIV 28480 1901 0029 1 1901 0033 DIODE SILICON 100 180WV 07263 FD3369 1 1901 0040 DIODE SILICON 30MA 30WV 01263 FDG1088 9 1901 0050 DIODE SILICON 75V 14433 5270 1 1901 0473 DIODE ASSY SILICON 50 MA 7500PIV 28480 1901 0473 4 1901 0557 DIOOE MULTIPLE 28480 1901 0557 2 1902 0025 DIODE BREAKDOWN 10 0V 5 400 MW 28480 1902 0025 1 1902 0041 DIODE BREAKDOWN 5 11V 5 04713 5210939 98 1 1902 3119 DIODE BREAKDOWN 6 49V 2 04713 Z10939 129 1 1902 3428 DIODE BREAKDOWN SILICON 100V 5 28480 1902 3428 1 2100 0150 R VAR GANGED 2 OHM 20 LIN 1 4W 28480 2100 01
69. OUBLESHOOTING Perform Block Diagram Trouble shooting Oscilloscope presentation of signals at A2TP9 and or TP19 abnormal Yes 2 LLL Connect oscilloscope to A2TP8 and If normal waveform is obtained at TP18 Oscilloscope presentation similar No A2TP9 and TP19 troubleshoot Buffer to A cannot be obtained by adjusting Amplifier circuits A2Q7 through Q10 oscillator frequency and amplitude and or A2Q22 through Q25 Yes 3 Disconnect oscillator from Network Analyzer test channel output Connect normal Reference and Test channel sig nals to the Network Analyzer Connect oscilloscope to A2TP2 and TP14 Oscil loscope presentation similar to B can be obtained by adjusting input signal ampli tude and Network Analyzer test channel gain controls If waveform at A2TP14 is abnormal troubleshoot A2Q19 and Q20 circuits If a waveform at A2PP2 is abnormal troubleshoot A2Q4 input circuit Yes Connect oscilloscope to 2 6 and TP7 Oscilloscope presentation is similar to C Troubleshoot 204 and Q6 circuits If waveform at A2TP3 is abnormal troubleshoot A2Q 1 through Q3 circuits Connect oscilloscope to A2TP3 and TP15 Oscilloscope presentation is simi N lar to D If waveform at A2TP15 is abnormal Yes troubleshoot 2921 circuit o Troubleshoot A2A1 and or A2A2 cir cuits TP18 0 25V gt TP8 0 25V P P TP6 9V VM QV ME AS D WITH PHASE SS
70. Q SI NPN SELECTED FROM 2 323704 A2022 1854 9475 Q SI NPN A2023 1854 0221 Q SI NPN REPLACEABLE BY 2N4044 A2024 1853 6C2C Q SI PNP SELECTED FROM 2N3702 2025 1854 0C71 0 51 NPN SELECTED FROM 2N3704 A2026 1854 0221 0 51 NPN REPLACEABLE BY 2N4044 A2027 1854 0475 0 51 NPN A2028 1853 002C 0 51 PNP SELECTED FROM 2 3702 A2029 1854 0C71 Q SI NPN SELECTED FROM 2N3704 A2030 1853 0020 Q SI PNP SELECTED FROM 2N3702 A2031 1853 0020 Q SI PNP SELECTED FROM 2N3702 See introduction to this section for ordering information Section VI Replaceable Parts Reference Designation 6 6 A2R36 A2R38 A2R39 A2R40 A2R41 A2R42 A2R43 A2R44 Table 6 2 Parts List Indexed by Reference Designation Cont Part No 1854 0232 1854 0232 0757 0442 0757 0438 0757 0443 0757 0443 0698 3440 0698 3157 0757 0460 0698 3136 0751 0123 0757 0416 0757 0444 0751 0442 0757 0442 0757 0460 0751 0421 0698 3157 0698 0084 0698 0083 0698 3440 0698 0C84 2100 1759 0757 0460 0757 0421 0698 3157 0698 3440 0698 0083 0698 0083 0757 0442 0757 0442 0698 3445 0757 0458 0757 0465 0751 0424 0757 0440 0698 3450 0698 3156 2100 176C 0698 3154 0757 0442 0757 0442 0698 3151 0757 0458 0757 0465 2698 3491 See introduction to this section for ordering information Description Model 8414A Note 0 51 NPNISELECTED FROM 2N3440 0 51 NPNLSELECTED FROM 2N3440 R FXD R R
71. R 100 OHM 20 LIN 1 2W R VAR GANGED 2X10K OHM 20 LIN 1 4W SWITCH PUSHBUTTON SPST NO TRANSFORMER TRANSFORMER ELECTRON TUBE CRT CABLE ASSY TEST CHANNEL INPUT CABLE ASSY TEST CHANNEL INPUT H26 8414A ONLY CABLE ASSY FOR H26 8414A ONLY CABLE CRT MISCELLANEOUS COVER PLATE CRT SOCKET SOCKET CRT TUBE STANDARD SMITH CHART SET VIEWING COMPRESSED SMITH CHART SET VIEWING COMPRESSED SMITH CHART SET PHOTO RETURN LOSS PHOTO RETURN LOSS VIEWING STANDARD SMITH CHART SET PHOTO EXPANDED SMITH CHART SET VIEWING EXPANDED SMITH CHART SET PHOTCGRAPHIC INSULATOR FOR R3B FOCUS INSULATOR BUSHING CERAMIC KNCB ROUND BLK 5 8 DIA KNCB POINTER BLK 5 8 DIA KNCB ROUND FOR 0 125 DIA SHAFT SCREW NYLON RD HD SLOT DR 2 56 See introduction to this section for ordering information Model 8414 Section VI Replaceable Parts Table 6 2 Parts List Indexed by Reference Designation Cont Part No Description Reference Designation IO Figure 6 1 Cabinet Parts CABINET PARTS 1 08414 2014 CRT BEZEL 1 2370 0013 SCREW SST FLAT HD DR 6 32 X 3 8 2 4320 0062 EXTRUSION RUBBER 3 7120 1254 TRADEMARK 4 7120 1574 PLATE IDENTIFICATION POLAR DISPLAY 5 5020 3281 TR IM NAMEPLATE 5 2210 0001 SCREW MACHINE SST 4 40 3 16 6 5060 0239 TOP COVER ASSY PLUG IN 6 2370 0003 SCREW SST FLAT HD 6 32 X 0 500 7 08414 0001 COVER REAR CRT 7 2370 0001 SCREW SST FLAT HD 6 32 X 0 250 8 08414 0005 PANEL REAR 9 0
72. RAMIC 0340 0005 2 0340 0162 INSULATOR TRANSISTOR 0340 0162 3 0370 0084 KNOB ROUND BLK 5 8 DIA 0370 0084 1 0370 0107 KNCB PGINTER BLK 5 8 DIA 0370 0107 1 0370 0134 KNCB RDCUND FOR 0 125 DIA SHAFT 0370 0134 1 0490 0739 RELAY DPDT 2A HP11D 24V 1 0520 0118 SCREW NYLON RD HD SLOT DR 2 56 0520 0118 2 0686 1055 R FXD COMP 1 5 1 2W EB 1055 1 0686 2055 R FXD COMP 2 MEGOHM 52 1 2W EB 2055 1 0681 1031 R FXD COMP 10K OHM 10 1 2W EB 10231 1 0698 0083 R FXD MET FLM 1 96K OHM 1 1 8W C4 23 0698 0084 MET FLM 2 15K 1 1 8W 2 0698 0085 R FXD MET FLM 2 61K 1 1 8W C4 1 0698 3136 R FXD FLM 17 8K OHM 12 1 8M C4 1 0698 3151 R FXD MET FLM 2 87K OHM 1 1 8W 0698 3151 2 0698 3153 R FXD MET FLM 3 83K 1 1 8W MFF 1 10 32 1 0698 3154 R FXD MET FLM 4 22K OHM 1 1 8W 0698 3154 8 0698 3156 R FXD MET FLM 14 7K OHM 14 1 8W 2 0698 3157 R FXD MET FLM 19 6K 1 1 8W C4 17 0698 3159 R FXD FLM 26 1K OHM 11 1 8W CEA 1 0698 3422 R FXD FLM 42 2 OHM 1 1 2W MFF 1 2 10 1 0698 3440 R FXD MET FLM 196 1 1 8W MF 1 10 32 10 0698 3445 Rs FXD MET FLM 348 OHM 1 1 8W 4 0698 2450 R FXD MET FLM 42 2K 1 1 8W 0698 3450 4 0698 3453 R FXD FLM 196K OHM 1 1 8W 0698 3453 1 0698 3456 R FXD FLM 287K OHM 1 1 88 0698 3456 1 0698 3491 R FXD MET FLM OHM 0 1 1 88 0698 3491 4 0698 3639 RsFXD MET OX 1 2K OHM 5 2W 0698 3639 1 0751 0123 R FXD FLM 34 8K OHM 1 1 8W 1 10 32 3 0751 0196 R FXD
73. RE LS 5 13 INTENSITY ADJUSTMENT DESCRIPTION spot is obtained in the center of the CRT the front panel INTENSITY control is set to mid range and the Intensity Limit control is adjusted to make the spot just visible EQUIPMENT SETUP Same as Figure 5 2 PROCEDURE a Disconnect oscillator from the Network Analyzer test channel output connector b Set the 8414A front panel INTENSITY control to mid range 12 o clock position c Adjust A3R10 Intensity Limit control until the spot is just visible 5 9 Section V Model 8414A Adjustment Procedures ADJUSTMENT PROCEDURE 5 14 MANUAL BEAM CENTERING ZERO ADJUSTMENT DESCRIPTION A coupled oscilloscope is connected to the 8414 HORIZONTAL and VERTICAL output connectors The 8414A BEAM CTR pushbutton is pressed and the horizontal and vertical Manual Beam Centering Zero Adj controls are adjusted for 0 10 mV PROCEDURE a Connect equipment as shown in Figure 5 3 b Connect the oscilloscope vertical input to the 8414A rear panel HORIZONTAL output connec tor de couple and dc balance the oscilloscope c Press and hold the 8414A BEAM CTR pushbutton and adjust A1R32 Manual Beam Centering Horiz Zero Adj for 0 10 mVdc d Connect the oscilloscope vertical input to the 8414A VERTICAL output connector press and hold the 8414 BEAM CTR pushbutton and adjust A1R33 Manual Beam
74. RENCE DESIGNATIONS SHIELD A3 POWER SUPPLY ASSEMBLY NO T Aa PREFIX Assy 55 ASSY A3 Ji JI 2 JI 6 6 21 PI LI XA2 3 RS CRT M NECK TERMINALS B C D E F G H J 2 YY WIP2 xvi 1 l L SHIELD XVI 08414 6003 3 OF 3 c r 5I00V 1 t 1 a ABAI Al Z AXIS MOD AND NTERCONNECT ASSEMBLY 08414 6029 4 OF 4 E VIO BLU On ARI 196 934 0 5 W 0 _ AIRI6 1960 947 1 oW vIO YEL ARIS GRA 9999 1 1 1 MIS 1Oo M n 41 4 C90 AIQ6 BASE lt gt AIRIA NTENSITY 902 w BLK YEL u BRN 1 RI 1000 VERT POS 8 i cw H W BLK BLU a gt 2 2 4 O UU r gt gt COD RN x x x lt x SI O 8414A INTERCONNECTION DIAGRAM 936 fo BR AIR34 R3I H ZERO R30 V ZERO 22 21 Jeo 863680189 IS ARAN SARIS AS AN 1 2 CO ORDINATE CONVERTER ASSEMBLY 08414 6028 Section VIII Service CRT NECK TERMINALS 1 BLANKING 94 i J3 CoD ORIZONTAL HORIZONTAL 945 a VERT
75. V 20kHz P O A POWER SUPPLY ASSEMBLY 08414 6003 2 OF 3 CRT ANODE SUPPLY ASSEMBLY 08414 6004 VOLTAGE DOUBLER 4900 1 5000V 1 02 INTENSITY PLUS 196 BLANKING OR MARKERS FROM 5 i 77 m AAUI AIXA3 RI 20 20 22 175VAC I FROM I MAINFRAME 211010 E CI 10 8414 POWER SUPPLY 936 ee ee 20V CRT GRID BIAS cs R8 elso IOO WARNIN HIGH VOLTA GRI 150V POWER SUPPLY SERIES REGULATOR Q3 2N3738 4 lt 1 AMPL IER lesan 270K 5100V WARNING HIGH VOLTAGE Section VIII Service TRACE ALIGN RSA ILLUMINATION pro w2 720 2 LIMIT LI 2 100K cw MAGNETIC 6 4 SHIELD PATTERN t CO ASTIGMATISM 0 1 150V 20V 6 X AXIS SIGNAL FROM HORIZONTAL _ DEFLECTION 1 1 IODE SUPPLY CS Y AXIS SIGNAL FROM VERTICAL 315 DEFLECTION L DRIVER R22 10 1000 RI3 MAGNETIC RI4 2M 77 SHIELD CRT NECK IOK TERMINALS VI CRT 08414 6016 IL i5 _ 55 WARNING QAI ORN HIGH voLTaGE L
76. XD MET FLM 42 2K 1 1 8W R FXD MET FLM 1 96K OHM 1 1 8W R FXD MET FLM 4 22K DHM 1 1 8W R FXD MET FLM 10 0K 15 1 8M R FXD FLM LOOK 1 1 8W R FXD MET FLM 19 6 1 1 8M R FXD FLM 196 OHM 1 1 8W R FXD MET FLM 51 1K DHM 15 1 2W R FXD MET FLM 6 19K OHM 1 1 8 R FXD MET FLM 3 16K OHM 1 1 8W FLM 51 1K OHM 1 1 2W R FXD MET FLM LOOK 1X 1 8W R FXD MET FLM 19 6K 1 1 8W FLM 196 OHM 1 1 8W R FXD FLM 825 1 1 8W MET FLM 825 OHM 1 1 8W MET FLM 10 0K 1 1 8W R FXD MET FLM 10 0K 15 1 8W SWITCH SLIDE DPDT 0 5 125V AC DC DIODE MULTIPLE DIODE MULTIPLE ASSY POWER SUPPLY C FXD ELECT 10 UF 50 10 350VDCW C FXD MY 0 1 UF 10 200VDCW C FXD LUF 5 200VDCW ELECT 100UF 100VDCW C FXD CER 0 1 UF 480 205 SOVDCW C FXD 0 015 UF 10 3090VDCW C FXD MY 0 015 UF 10 3000VDCW CER 4700 80 20 40COVDCW SUPPORT CAPACITOR C FXD 0 015 UF 10 3000 0 DIODE SILICON 600 PIV DIODE SILICON 100MA 180WV DICDE BREAKDOWN SILICON 100V 5 DIODE BREAKDOWN 6 49V 2 DIODE SILICON 75V DIODE SILICON DICDE SILICON COIL FXD 400 UHY 0 51 NPN SELECTED FROM 2N3440 See introduction to this section for ordering information Model 8414A Section VI Replaceable Parts Table 6 2 Parts List Indexed by Reference Designation Cont
77. Y NUMBER 15 AIRI COMPLETE AS SHOWN NERED FULL DESIGNATION IN RI OF ASSEMBLY AI DESIGNATIONS OF OTHER COMPONENTS ARE aa A i TO CRT VERTICAL HORIZONTAL DEFLECTION DRIVER NOTE gt gt c vertens p rE I 1 I l VERT POS 22 gt gt I P O ASSY OF 4 P O AI ASSY 2 OF 4 RIG RIB 1960 I I 20V 20V i 1 l 1 _ gt 17 M TO CRT HORIZONTAL gt DEFLECTION PLATES SEE FIGURE 8 3 FOR GENERAL NOTES MEASUREMENT CONDITIONS REFERENCE DESIGNATIONS NO A2 PREFIX ASSY ASSY J3 4 21 28 43 50 RI6 19 CR6 7 XA2 RI 2 L4 5 I0 011 18 26 33 R39 62 86 108 SI Figure 8 16 Low Pass Filters and Horizontal and Vertical Drivers Schematic Diagram Model 8414A Schematic 3 TROUBLESHOOTING Perform Block Diagram Troubleshooting Dot cannot be obtained on Polar Display and voltage at AITP1 does not vary from at least 68V to 80Vdc with front panel INTENSITY control Measure voltage at AITPS Voltage is 4 8V 0 5V de Troubleshoot A1Q1 Q2 and Q4 circuits using voltages in Table 8 5 Yes 3 Measure voltage AITP3 Voltage E should vary from at least 68V to 80V Troubleshoot 4195 95 Q6 circuits dc with INTENSITY control using voltages m taole 9 9 Yes 4 Tr
78. a detector is turned on will be passed through the detector and the detector s output capacitor will charge to the average of the signal passed through the detector When the input signal A2TP3 or TP15 is in phase with the turn on signal the detector s output is maximum posi tive When the input signal is 180 degrees out of phase with the turn on signal the detector s output is maximum negative When the input signal is exactly 90 degrees with respect to the turn on signal the average of the detector s output signal is zero Therefore a detector s output can vary from a maximum positive zero degree phase difference to a maximum negative 180 degrees phase differ ence and back to a maximum positive 360 de grees phase difference The magnitude of the maximum positive and negative detector output voltages is directly proportional to the amplitude of the input signal Because the signal to the Sin detector is shifted 90 degrees the output of the Sin detector is equal to the amplitude of the signal at A2TP14 times the sine of the angle be tween the reference and test channel input signals sin and the output of the Cos detector is equal to the amplitude of the signal at A2TP14 times the cosine of the angle between the reference and test channel input signals A cos Buffer Amplifiers A2Q7 through Q10 and A2Q22 through Q25 are differential amplifiers with voltage gains of about ten Phase shift through these a
79. acement com ponent into mounting holes Sharp lead ends may damage plated through conductor Note Axial lead components such as resistors and tubular capacitors can be replaced without unsoldering Clip leads near body of defective component remove component and straighten leads left in board Wrap leads of replacement com ponent one turn around original leads Solder wrapped connection and clip off excess lead 8 17 Transistor Replacement 8 18 A general procedure for replacing a transis tor is as follows a Do not apply excessive heat See Table 8 2 for soldering tool specifications 8 2 Silicone Products Dept Waterford New York b Use a heat sink such as pliers or hemostat between transistor body and hot soldering iron c When installing a replacement transistor ensure sufficient lead length to dissipate heat of soldering by maintaining about the same length of exposed lead as used for original transistor 8 19 Diode Replacement 8 20 Solid state diodes are in many physical forms This sometimes results in confusion as to which lead or connection is for the cathode nega tive or anode positive since not all diodes are marked with the standard symbols Figure 8 1 shows examples of some diode marking methods If doubt exists as to polarity an ohmmeter may be used to determine the proper connection It is necessary to know the polarity of the ohms lead with respect to the common lead for the ohmm
80. ach page Alphabetical codes have been arbitrarily assigned to suppliers not appearing in the H4 Handbooks Manufacturer Address Ultronix Inc Union Carbine Corp Elect Div Viking Ind Inc Icore Electro Plastics Inc Cosmo Plastic c o Electrical Spec Co San Mateo Cal New York N Y Canoga Park Cal Sunnyvale Cal Cleveland Ohio Rockford ill Roslyn Heights Long Island N Y M Westbury N Y Barber Colman Co Tiffen Optical Co Metro Tel Corp Stewart Engineering Co Santa Cruz Cal Wakefield Engineering Inc Wakefield Mass Bassick Co Div of Stewart Warner Corp cone Bridgeport Conn Redwood City Cal Rochester N Y Chicago Raychem Corp Bausch and Lomb Optical Co E T A Products of America Amatom Electronic Hardware Co Inc New Rochelle N Y Penacook Indianapolis Ind Phoenix Arizona Van Nuys Cal San Carlos Cal Van Nuys Cal Beede Electrical Instrument Co Inc General Devices Co Inc Components Inc Ariz Div Torrington Mfg Co West Div Varian Assoc Etmac Div Kelvin Electric Co Digitran Co m Pasadena Cal Transistor Electronies Corp 2 Minneapolis Minn Westinghouse Electric Corp Electronic Tube Div Elmira Filmohm Corp Cinch Graphik New York N Y City of Industry Cal Silicon Transistor Corp Carle Piace N Y Avnet Corp e Culver City Cal Fairchild Camera amp
81. adjusted to superimpose the two signals on the oscilloscope and A2C51 is selected for a 0 5 degree indication on the Polar Display PROCEDURE a Connect equipment as shown in Figure 5 4 b Set the sweep oscillator for single frequency operation and adjust the Network Analyzer to phase lock to the applied signal c Connect the oscilloscope vertical inputs to the Network Analyzer rear panel reference and test channel outputs d Adjust the Network Analyzer phase vernier test channel gain and amplitude vernier controls to obtain two sine waves on the oscilloscope exactly superimposed on one another To ensure oscilloscope and oscilloscope cables give a true in phase indication reverse the oscilloscope cables at the Network Analyzer The two sine waves should still be superimposed on one another e Select a value for A2C51 to obtain a 0 5 degree 8414A indication Typical range of values for 2 51 is 150 pF to 250 pF lpisplay reference for 8407A 5 12 Model 8414 SWEEP OSCILLATOR MA INFRAME HP 8414A Section V Adjustment Procedures ADJUSTMENT PROCEDURE OSCILLOSCOPE NETWORK ANALYZER NOTE TRANSDUCER 1 O REF VERT TEST OUT 30dBm TO NETWORK ANALYZER REFERENCE AND TEST CHANNEL INPUTS FOR 8407A NETWORK ANALYZERS CONNECT THE SWEEP OSCILLATOR VTO OUTPUT TO THE 8407A VTO INPUT EQUIPMENT N
82. ak Manufacturing Co Crystal Lake Ill 71068 The Bendix Corp Electrodynamics Div N Hollywood Cal 77075 Pacific Metals Co San Francisco Cal 77221 Phanostran Instrument and Electronic Co e t t c t t t So Pasadena Cal 77252 Philadelphia Steel and Wire Corp Philadelphia Pa 77342 American Machine amp Foundry Co Potter amp Brumfield Div 22 Princeton Ind 77630 Electronic Components Div Camden N J 77638 General Instrument Corp Rectifier Div Brooklyn N Y 00015 46 Revised October 1969 Code 77764 77969 78189 78277 78283 78290 78452 78471 78488 78493 78553 78790 78947 79136 79142 79251 79727 79963 80031 80033 80120 80131 80207 80223 80248 80294 80411 80486 80509 80583 80640 80813 81030 81073 81095 81312 81349 81483 81541 81860 82042 82047 82116 82142 82170 82209 82219 82376 82389 82647 82768 82866 82877 82893 83058 83086 83125 83148 83186 83298 83315 83324 83330 83332 83385 Manufacturer Address Resistance Products Co Harrisburg Pa Rubbercraft Corp of Calif e Torrance Cal Shakeproof Division of Illinois Tool Works Elgin Ill Sigma So Braintree Mass Signal Indicator Corp New York N Y Struthers Dunn Inc Pitman N J Thompson Bremer amp Co Chicago Ill Tilley Mfg Co San Francisco Cal Stackpole Carbon Co St Marys Pa Standard Thomson Corp Waltham Mass
83. al resistance line are constant resistance lines Numbers along the outer circle of the Smith Chart represent the reactive component of the impedance Inductive reactance is read in the upper half of the graph and capacitive reactance is read in the lower half of the graph Lines of constant reactance originate from a point at the center right edge of the graph and extend to points along the outer circle Figure 3 3 shows a spot on the graph representing a normal ized impedance Zn 0 6 0 4 The real part 0 6 is found by following the resistance circle up to the horizontal line through the center of the Smith Chart overlay The real part is read from the resist ance scale where the resistance circle crosses the horizontal line The imaginary part j0 4 is found by following the reactance circle to the outer edge of the Smith Chart overlay To determine the actual impedance multiply each part of the normal ized impedance by Zo 50 ohms In this case the actual impedance is 50 x 0 6 j 50 x 0 4 or 30 j20 ohms obtain the corresponding admittance value for a given impedance value draw an admit tance circle as shown in Figure 3 4 using the 1 0 point on the resistance line for the center and the impedance point as the circle radius Draw a diam eter line from the impedance point through the 1 0 resistance point center to the opposite side of the admittance circle The admittance point is where the diameter line intersects the
84. anel Features Return Loss Overlay Typical Smith Chart Display of Nor malized Impedance Smith Chart Plot of Admittance Point 2 CRT Overlays Measured Reflection Coefficient Locus of Measured Reflection when Load is Moved Locus of Measured Reflection with Directivity Cancelled Reflection Coefficient Measurement Transmission Measurement Typical Polar Displays During Initial Calibration Adjustment Model 8414A H26 Polar Display and Automatic System Interface Block Diagram Performance Test Equipment Setup Setup for Trace Alignment and Vert ical Gain Adjustment Setup for Phase Recorder Gain and Pattern Shape Adjustments Setup for Manual Beam Centering Zero Adjustment Setup for Phase Zero Adjustment Cabinet Parts Examples of Diode and Transistor Marking Methods General Information on Schematic Diagrams Schematic Diagram Notes Setup for Troubleshooting D Phase and Amplitude Relationship of Typical Reference and Test Signals Page 3 12 4 2 5 5 5 7 5 11 5 13 6 11 8 3 Figure 8 6 8 7 8 8 8 9 8 10 8 11 8 12 8 13 8 14 8 15 8 16 8 17 8 18 8 19 8 20 8 21 8 22 8 23 8 24 LIST OF TABLES Specifications Recommended Test Equipment Performance Test Record Recommended Test Equipment Adjustment Controls and Functions Reference Designations and Abbrevi ations Parts List Indexed by Reference Des ignation Table Title
85. ar Display Note Perform block diagram troubleshooting lpisplay reference for 8407A Figure 8 4 Setup for Troubleshooting 8 1 Section VIII Service Model 8414A HOW TWO SINE WAVES ARE CONVERTED TO A POLAR DISPLAY The Model 8414A Polar Display provides a polar plot of the relative magnitude and phase of the signals applied to the Network Analyzer Two sig nals from the Network Analyzer mainframe a test signal and a phase reference signal are applied to the 8414A The phase reference signal alternately gates on two bridge detectors a sin detector and cos detector The test signal divides into two signals One of these signals is shifted in phase by 180 degrees and fed to the cos detector The other signal is shifted in phase by 90 degrees and fed to the sin detector Each detector produces an output proportional to the test signal amplitude and phase relationship between the test signal and phase reference signal The detector output signals are converted to deflection signals which are ap plied to the CRT producing a polar display An understanding of the signal processing may be obtained by discussing the trigonometric relation ship between signals Begin by assuming two sine wave signals a reference signal and a test signal which leads the reference signal by some phase angle See figure 8 5 For this discussion we will assume that the angle is approximately 45 grees however it ma
86. bide Corp Consumer Prod Div s a New York N Y 83777 Model Eng and Mfg Inc Huntington Ind 83821 Loyd Scruggs Co m Festus Mo 83942 Aeronautical Inst amp Radio Co Lodi N J 84171 Arco Electronics Inc Great Neck N Y 84396 A J Glesener Co Inc San Francisco Cal 84411 TRW Capacitor Div Ogallala Neb 84970 Sarkes Tarzian Inc Bloomington Ind 85454 Boonton Molding Company Boonton N J 85471 A B Boyd Co San Francisco Cal 85474 R M Bracamonte amp Co San Francisco Cal 85660 Koiled Kords Inc Hamden Conn 85911 Seamless Rubber Co Chicago Ill 86174 Fafnir Bearing Co Los Angeles Calif 86197 Clifton Precision Products Co Inc Clifton Heights Pa 86579 Precision Rubber Products Corp Dayton Ohio 86684 Radio Corp of America Electronic Comp amp Devices Div Harrison N d 86928 Seastrom Mfg Co Glendale Cal 87034 Marco Industries Anaheim Cal 87216 Philco Corporation Lansdale Division Lansdale Pa 87473 Western Fibrous Glass Products Co San Francisco Cal 87664 Van Waters amp Rogers Inc San Francisco Cal 87930 Tower Mfg Corp Providence R I 88140 Cutler Hammer Inc Lincoln 88220 Gould National Batteries Ine St Paul Minn 88698 General Mills Inc Buffalo N Y 89231 Graybar Electric Co Oakland Cal 89473 G E Distributing Corp Schenectady N Y 89665 United Transformer Co Chicago Ili 900
87. boken N J Electric Regulator Corp Norwalk Conn Jeffers Electronics Division of Speer Carbon Co Du Bois Pa Fairchild Camera amp Inst Corp Space amp Defense Systems Div e Paramus N J Magurie Industries Ine Greenwich Conn Sylvania Electric Prod Inc Electronic Tube Division 2 Emporium Pa East Newark Harrison N J Chicago Astron Corp Switcheraft Inc Metals amp Controls Inc Spencer Produets Attleboro Mass Joliet 1 Madison Wis Woodstock N Y Glendale Cal Phillips Advance Control Co Research Products Corp Roltron Mfg Co Inc Vector Electronic Co Carr Fastener Co Cambridge Mass New Hampshire Ball Bearing Ine Peterborough N H General Instrument Corp Capacitor Div Darlington S C Los Angeles Cal Springfield N J Red Bank N J Mundelein Ili Newport Beach Cal ITT Wire and Cable Div Victory Eng Corp Bendix Corp Red Bank Div Hubbell Corp 2 Rosan Inc Smith Herman H In Brooklyn N Y Tech Labs Palisades Park N J Central Screw Co Chicago Ill From Handbook Supplements H4 1 Dated AUGUST 1966 6 17 Section VI Model 8414A Table 6 4 Code List of Manufacturers Cont Replaceable Parts Code No Manufacturer Address 83501 Gavitt Wire and Cable Co Div of Amerace Corp Brookfield Mass 83594 Burroughs Corp Electronic Tube Div Plainfield N J 83740 Union Car
88. bout 5100 Vdc CRT Grid Supply The grid supply consists of a half wave rectifier or peak detector Its output voltage is about 2500 Vdc with the CRT un blanked With no input from the intensity modula tor the grid supply is referenced to ground how ever an input voltage from the intensity modulator becomes the reference voltage for the grid supply A change in this input voltage causes the grid supply s output voltage to change which changes the CRT s grid to cathode bias Q1 COLLECTOR 40V P P Lut Model 8414A INTENSITY ILLUMINATION PATTERN SHAPE ASTIGMATISM ASAICZ TI VEI LN erc C4 RIS RI8 Figure 8 19 CRT High and Low Voltage Supplies and 150 Volt Supply Component Identification REFERENCE DESIGNATIONS NO REFERENCE DESIGNATIONS WITHIN OUTLINED PREFIX ASSY ASSY ASSY ASSEMBLIES ARE ABBREVIATED FULL DESIGNATION IN Pi 2 4 CI 9 Ci s CLUDES ASSEMBLY NUMBER eg RI OF ASSEMBLY QI 3 CRI 7 CRI 2 R20 21 5 AIRI DESIGNATIONS OF OTHER COMPONENTS ARE R3 5 LI RI XA3 COMPLETE AS SHOWN 2 91 2 RI 14 16 t we 21 23 LI DELETED A3RI5 NOTES SEE FIGURE 8 3 FOR GENERAL NOTES MEASUREMENT CONDITIONS 2 COMMON TO CHASSIS ONLY WHEN 8414A INSTALLED iN MAINFRAME Lo HIGH VOLTAGE OSCILLATOR QI 2N3054 MULTIVIBRATOR QI 02 Q2 2N3054 5 40
89. ca Inc Compac Hollister Co Hamilton Watch Co Hewlett Packard Co Heyman Mfg Co Instrument Specialties Co G E Receiving Tube Dept Lectrohm Inc Stanwyck Coil Products Ltd Hawkesbury Ontario Canada Cunningham w H amp Hill Ltd Baldwin Park Cal Horseheads N Y Independence Kansas Philadelphia Pa Long Island City N Y New Britian Conn N Chicago Ill Indianapolis Ind Washington D C Nela Park Cleveland Ohio West Concord Mass Huntington Ind New Rochelle N Y Carlstadt N J Hollister Cal Lancaster Pa Palo Alto Cal Kenilworth N J Little Falls N J Owensboro Ky Chicago Toronto Ontario Canada Mallory amp Inc Indianapolis Ind Mechanical Industries Prod Co Akron Ohio Miniature Precision Bearings Inc Keene N H Muter Co Chicago 1 Norgren Co Englewood Colo Ohmite Mfg Co Skokie Penn Eng amp Mfg Corp Polaroid Corp Precision Thermometer amp Inst Co Microwave amp Power Tube Div Rowan Controller Co Sanborn Company Shallcross Mfg Co Simpson Electric Chicago 11 Sonotone Corp Elmsford N Y Raytheon Co Commercial Apparatus amp System Div So Norwalk Conn Tonawanda N Y North Adams Mass Tulsa Okla Thomas amp Betts Co Elizabeth N J Triplett Electrical Inst Co Bluffton Ohio Union Switch and Signal Div of W
90. coeffi cient of 1 0 determine the change in test channel gain required to expand the full scale calibration to a desired reflection coefficient by 20 logi10 r which is equivalent to the Return Loss of the de sired full scale reflection coefficient calibration lpisplay reference for 8407 A 3 1 Section III Operation Model 8414A FRONT AND REAR PANEL FEATURES 9414 POLAR DISPLAY HEWLETT PACKARD 1 Simulates zero test channel signal so that beam can be moved to a refer ence position 2 HORIZ POS Moves trace horizontally 3 VERT POS Moves trace vertically 4 TEST IN Included on H26 8414A Test channel amplitude signal input Connect to Network Analyzer mainframe TEST CHAN OUT with coaxial cable such as HP 11086A refer to paragraph 3 37 5 BLANKING Input for between sweep blanking pulse from HP 8690 and 690 series Sweep Oscillators 4 to 10 volts blanks the CRT display Input impedance gt 20k ohms 6 MARKERS Input for frequency marker pulses from HP 8690 and 690 series Sweep Oscillators 4 to 10 volts intensifies CRT display Input impedance gt 20k ohms 7 HORIZONTAL For driving X Y graphic recorders Direct coupled signal propor tional to the horizontal deflection signal 2 5V 100 ohms source impedance 10 kHz 10 11 12 13 MEWLETT PACKARD MADE 5 A SERIAL 000 00000 0000000000
91. d 8 12 Circuit Board Repair 8 13 The printed circuit boards in the 84144 are of the plated through type consisting of metallic conductors bonded to both sides of insulating material Soldering can be done from either side of the board with equally good results Table 8 2 lists required tools and materials Following are recom mendations and precautions pertinent to printed circuit repair work a Avoid unnecessary component substi tution it can result in damage to the circuit board and adjacent components b Do not use a high power soldering iron Excessive heat may lift a conductor or damage the board c Use a suction device Table 8 2 or wooden toothpick to remove solder from compo nent mounting holes Do not use a sharp metal object such as an awl or twist drill for this purpose Sharp objects may damage the plated through conductor d After soldering remove excess flux from the soldered area and apply a protective coating to prevent contamination and corrosion See Table 8 2 for recommendations 8 14 A broken or burned section of conductor can be repaired by bridging the damaged section with a length of tinned copper wire Allow ade quate overlap and remove any varnish from the conductor before soldering wire into place 8 15 Component Replacement 8 16 A general procedure for replacing a com ponent is as follows a Remove defective component from circuit board b Remove solder from mounting h
92. d anode supply The cathode supply consists of a half wave rectifier and pi section filter Its output voltage is about 2450 Vdc In addition to providing dc bias to the CRT cathode the cathode supply s output voltage is used in a voltage divider to 150V to provide about 2000 Vdc to the focus control CRT Anode Supply The anode supply consists of a voltage doubler and pi section filter Its output voltage is about 5100 Vdc Grid Supply The grid supply consists of wave rectifier Its output voltage is about Vde with the CRT unblanked With zero input from the intensity modulator the grid is referenced to ground however an input age from the intensity modulator becomes the rence voltage for the grid supply A change in intensity modulator output voltage causes the supply voltage to change which changes the s grid to cathode bias and intensity modulates beam A A2TP22 60V P P A2TP23 60V P P B A2TP11 60V P P COMO N A2TP13 60V P P C A2TP9 2V P P V NN 2 A2TP19 2V P P Prepare for troubleshooting as in Figure 8 4 Dot obtained on CRT Measure vol variable witl trol from at CRT POWER Yes SUPPLIES and INTENSITY MODULATOR OK Troubleshoc phes using 3 Set S1 to TEST position Connect oscil lator set for 1 kHz to 8414A HORI ZONTAL OUTPUT Deflection on CRT adjustable to 10 cm diameter of outer graticule with signal amplitude
93. d or error free LIMITATION OF WARRANTY The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by Buyer Buyer supplied software or interfacing unauthorized modification or misuse operation outside of the environmental specifications for the product or improper site preparation or main tenance NO OTHER WARRANTY IS EXPRESSED OR IMPLIED HP SPECIFICALLY DISCLAIMS THE IM PLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE EXCLUSIVE REMEDIES THE REMEDIES PROVIDED HEREIN ARE BUYER S SOLE AND EXCLUSIVE REMEDIES HP SHALL NOT BE LIABLE FOR ANY DIRECT INDIRECT SPECIAL INCIDENTAL OR CONSE QUENTIAL DAMAGES WHETHER BASED ON CONTRACT TORT OR ANY OTHER LEGAL THEORY ASSISTANCE Product maintenance agreements and other customer assistance agreements are available for Hewlett Packard products For any assistance contact your nearest Hewlett Packard Sales and Service Office Addresses are provided at the back of this manual 8414A POLAR DISPLAY SERIAL NUMBERS This manual applies directly to instruments with serial numbers prefixed 981 and 1144A With changes described in Section VII this manual also applies to instruments with serial numbers pre fixed 936 and 940 For additional important information concerning serial numbers see INSTRUMENTS COVERED BY MANUAL in Section I This manual does not apply to serial numbers pre fixed 933 and below Co
94. d to cross reference connec tions between schematics 8 25 Some of the general information obtainable from the schematics is shown in Figure 8 2 Notes 8 3 Section VIII Service Model 8414A Table 8 3 Ohmmeters Used for Transistor Testing Open Circuit Short Circuit Ohmmeter Range s Voltages Current Rx 1 0V 1 mA Rx 10K 1 0V 100 n 1124 R x 100K 1 0V 10 uA Rx 1M 1 0V 1 Rx 10M 1 0V 0 1 Rx 1 3V 0 57 mA Rx 10 1 3V 57 410 R x 100K 1 3V 5 7 uA Rx 1M 1 3 0 5 uA 10 0 05 uA x 100 11 mA Rx 110 uA HP 410B Rx 10K 11 uA R x 100K 11 4A Rx 1M 0 11 uA Simpson 260 Rx100 1 Simpson 269 Rx 0 82 mA Triplett 630 R x 100 son Varies with Serial Number Rx 10 750 Triplett 310 R x 100 15 uA and explanations of symbols pertaining to all the diagrams are contained in Figure 8 3 Notes about specific components circuits or conditions are given on the diagram to which they apply 8 4 8 26 As an aid to finding components and as semblies in the set of diagrams each diagram has a box labelled Reference Designations that con tains all the reference designations appearing on the diagram Model 8414 Section VIII Service Table 8 4 Out of Circuit Transistor Testing Connect Ohmmeter Positive Negative Measure Resistance Transistor Type Lead to Lead to Ohms emitter bas
95. dditional important information concerning serial number coverage refer to INSTRUMENTS COVERED BY MANUAL in Section I 1 6 Some schematic diagrams may contain a dagger symbol near components which have changes or have been added during the life of the instrument The dagger refers to Table 7 2 Sum mary of Changes by Component information from this table in conjunction with information from Table 7 1 may be used to determine if the change applies to the instrument being serviced Table 7 1 Manual Changes by Serial Number Serial Prefix or Number Make Manual Changes 936 A NEW ITEM CHANGE A Page 6 4 Table 6 2 Serial Prefix or Number Make Manual Changes Change A2C14 and A2C36 to HP Part No 0160 2204 C FXD MICA 100PF 5 Page 6 5 Table 6 2 Change A2L1 and A2L7 to HP Part 9100 1664 COIL CHOKE 3000 UH 5 Page 8 183 Figure 8 14 Change A2C14 and A2C36 to 100 pF Change 211 and A2L7 to 3 mH CHANGE B Page 6 3 Table 6 2 Delete A1R42 through A1RA4 Page 8 17 Figure 8 18 Delete A1R42 through A1R44 1 1 Section VII Model 8414A Manual Changes Table 7 2 Summary of Changes by Component CHANGES 1 2 4 Chassis No Prefix A C14 C36 L1 7 B R42 44 Q7 8 11 12 22 23 26 27 lI Replace with new part 2 Replace with original part 7 2 DC Power Supply Oscilloscope Network Analyzer Sweep Oscillator 20 dB Attenuator
96. e 200 250 Small Signal emitter collector 10K 100K PNP Germanium 000 emitter base 30 50 Power emitter collector several hundred N emitter base 10K 100K PNP Silicon Small Signal emitter collector Very high might read open base emitter 1K 3K Small Signal collector emitter Very high might read open NPN Silicon base emitter 200 1000 collector emitter High often greater than 1M To test for transistor action add collector base short Measured resistance should decrease REFERENCE DESIGNATIONS NO PREFIX 1 2 43 A2 ASSY Assembly Assembly Assembly Designation Name Part No 7 2 DC REGULATOR ASSY 08708 6007 em re Index J3 not Mounted on Assembly A2 Lo 7 J3 CI 80pf 2 ys Value selected Plug in Number indicates for best Operation Socket Pin of Socket 2 Wire Color Color Code same as Resistor Code value shown is Connector First number identifies Ground Color Second A h Information Number identifies Wider Strip Third Number verage or mos identifies Narrower Strip E g 947 denotes Commonly selected value White Yellow Violet wire MIL STD 681 Figure 8 2 General Information on Schematic Diagrams Section VIII Service Model 8414A SCHEMATIC DIAGRAM NOTES Refer to MIL Std 15B for Symbols Not Shown Resistance is in ohms and capacitance is in microfarads unless
97. e amp Telegraph Corporation West Palm Beach Fla 14493 Hewlett Packard Company Loveland Colo 14655 Cornel Dublier Electric Corp Newark N J 14674 Corning Glass Works Corning N Y 14752 Electro Cube Inc San Gabriel Cal 14960 Williams Mfg Co San Jose Cal 15106 The Sphere Co Inc Little Falls N J 15203 Webster Electronics Co New York N Y 15287 Scionics Corp Northridge Cal 15291 Adjustable Bushing Co ej Hollywood Cal 15558 Micron Electronics Garden City Long Island N Y 15566 Amprobe Inst Corp Lynbrook N Y 15631 Cabletronics Costa Mesa Cal 15772 Twentieth Century Coil Spring Co Santa Clara Cal 15801 Fenwal Elect Inc 4 Framingham Mass 15818 Amelco Inc Mountain View Cal 16037 Spruce Pine Mica Co Spruce Pine N C 16179 Omni Spectra Inc Detroit Il 16352 Computer Diode Corp Lodi N J 16585 Boots Aircraft Nut Corp Pasadena Cal 16688 Ideal Prec Meter Co Inc De Jur Meter Div Brooklyn N Y 16758 Delco Radio Div of G M Corp Kokoma Ind 17109 Thermonetics Inc Canoga Park Cal 17474 Tranex Company Mountain View Cal 17675 Hamlin Metal Products Corp Akron Ohio 11745 Angstrohm Prec Inc Hollywood Cal 17856 Siliconix Inc e t 4 Sunnyvale Cal 17476 McGraw Edison Co Manchester N H 18042 Power Design Pacific Inc Palo Aito Cal 18083 Clevite Corp Semiconductor Div Palo Alto Ca
98. e amplifier gain varies with position of the front panel intensity control however with the intensity control set for normal intensity about 3 6V at 1 5 and the intensity limit set for about 110V at 1 2 the amplifier gain is about seven or eight For example if the voltage at 1 8 changes from 5V Q2 and Q4 off to 0 1V Q2 off Q4 on a change of about 5V the output at 1 should change from about 70 to about 105V a change of about 35 Emitter Follower The output of emitter follower A1Q7 at A1TP7 should be about 65V for a blanked condition about 70V for an unblanked condition and about 105V for a marker condition Model 8414A RIS RI RIG RIS CRS RI 8 R29 PRS R4 RS E 0 4 1452 amp Ral RIZ Re RE GRE Figure 8 17 Intensity Modulator Component Identification SWITCH Q4 22 1853 0020 Ra o MARKER 9 1960 956 HT GRN BL 19 6K y WHT GRN BLU R23 1854 0232 I9 6K A4JI 1 1 DISPLAY DISABLE i BLANKING 13 SWITCH SIGNAL FROM lt 6 BJ Q2 MAINFRAME 1854 0071 SWITCH QI M 1853 0020 BLANKING 86 RS 6190 WHT GRN GY BEAM CTR Q9 1853 005 98 1854 0071 1901 0025 wa lt 1853 0051 1854 0071 SEE NOTE 2 THIS PAGE AUTO BEAM CENTERING cre R 1901 0025 R40 R30 BEAM I9 6K 34 8 CENTER A2RI R
99. e 3 12 Model 8414A H26 Polar Display and Automatic System Interface Block Diagram Model 8414 Section IV Performance Tests SECTION IV PERFORMANCE TESTS 4 1 INTRODUCTION 4 2 This section provides instructions for per formance testing the 8414A If the serial prefix of your instrument is different from that listed on the title page of this manual there are differences be tween your instrument and the instrument de scribed in this manual See Paragraphs 1 7 and 1 8 4 3 Figure 4 1 is the equipment setup for all performance tests The procedures in Paragraphs 4 8 through 4 10 check the 8414 performance for incoming inspection and periodic evaluation The tests can be performed without access to the instrument interior The specifications in Table 1 1 are the performance standards Before starting the performance tests allow 30 minutes warm up time for the 8414A and Network Analyzer 4 4 EQUIPMENT REQUIRED 4 5 test instruments and accessories required to make the performance tests are listed in Table 4 1 Test instruments other than the ones listed can be used provided their performance equals or ex ceeds the Critical Specifications listed 4 6 TEST RECORD 4 7 Table 4 2 is a performance test record This table may be used during the test to record the test values obtained and it provides a permanent record of the test values for use at a later time during calibration or periodic evaluation
100. ectric Inc Hartford Conn 73586 Circle F Mfg Co Trenton N J 73682 George K Garrett Co Div MSL Industries Inc M I Philadelphia Pa 18734 Federal Screw Products Inc Chicago Ill 73743 Fischer Special Mfg Co Cincinnati Ohio 73793 General Industries Co The Elyria Ohio 73846 Goshen Stamping amp Tool Co Goshen Ind 73899 JFD Electronics Corp Brooklyn N Y 78905 Jennings Radio Mfg Corp San Jose Cal 13957 Groove Pin Corp Ridgefield N J 74276 Signalite Inc Neptune N J 74455 J H Winns and Sons Winchester Mass 74861 Industrial Condenser Corp Chicago Ill 74868 R F Products Division of Amphenol Borg Electronics Corp Danbury Conn 74970 E F Johnson Co 2 Waseca Minn 75042 International Resistance Co Philadelphia Pa 75263 Keystone Carbon Co Inc St Marys Pa 75378 CTS Knights Inc Sandwich Ill 75382 Kulka Electric Corporation Mt Vernon N Y 75818 Lenz Electric Mfg Co Chicago Ill 75915 Littlefuse Inc Des Plaines Ill 76005 Lord Mfg Co Erie Pa 76210 Marwedel 76433 General nstrument Corp Micamold Division MI Newark N J 76487 James Millen Mfg Co Inc Malden Mass 76493 J W Miller Co Los Angeles Cal 76530 Cinch Monadnock Div of United Fastener Corp San Leandro Cal 76545 Mueller Electric Co Cleveland Ohio 76703 National Union Newark N J 76854 O
101. ess 71436 Chicago Condenser Corp Chicago Ill 71447 Calif Spring Co Inc Pico Rivera Cal 71450 CTS Corp Elkhart Ind 71468 Cannon Electric Ine Los Angeles Cal 71471 Cinema Div Aerovox Corp Burbank Cal 71482 Clare amp Co Chicago 111 71590 Centralab Div of Globe Union Inc Milwaukee Wis 71616 Commercial Plastics Co Chicago Ill 71700 Cornish Wire Co The New York N Y 71707 Coto Coil Inc Providence R I 71744 Chicago Miniature Lamp Works Chicago Ill 71785 Cinch Mfg Co Howard B Jones Div Chicago Ill 71984 Dow Corning Corp Midland Mich 72136 Electro Motive Mfg Co Inc Willimantic Conn 72619 Dialight Corp 2 Brooklyn 12656 Indiana General Corp Electronics Div Keasby N J 72699 General Instrument Corp Cap Div Newark N J 72765 Drake Mfg Co Harwood Heights Ill 72825 Hugh Eby Inc Philadelphia Pa 72928 Gudeman Co Chicago Ill 72962 Elastic Stop Nut Corp Union N J 72964 Robert M Hadley Co Los Angeles Cal 72982 Erie Technological Produets Inc Erie Pa 73061 Hansen Mfg Co Inc Princeton Ind 73076 H M Harper Co Chicago 111 73138 Helipot Div of Beckman Inst Ine Fullerton Cal 73293 Hughes Products Division of Hughes Aircraft Co t t I Newport Beach Cal 73445 Amperex Elect Co M Hicksville L I N Y 73506 Bradley Semiconductor Corp New Haven Conn 73559 Carling El
102. estinghouse Air Brake ess s Pittsburgh Pa Universal Electric Co Owosso Mich Ward Leonard Electric Co Mt Vernon N Y Western Electric Co Inc New York N Y Weston Inst Inc Weston Newark Newark N J Wittek Mfg Co Chicago Minnesota Mining amp Mfg Co Revere Mincom Div ooo St Paul Minn Hartford Conn New York N Y Garden City N Y Detroit Mich Chicago Union City NJ Minneapolis Minn Chicago Cleveland Ohio New York N Y Erie Pa Doylestown Pa Cambridge Mass Southampton Pa Waltham Mass Westminster Md Waltham Mass Selma N C Spaulding Fibre Co Ine Sprague Electric Co Telex Corp Allen Mfg Co Allied Control Allmetal Screw Product Co Amplex Div of Chrysler Com Atlantic India Rubber Works Inc Amperite Co Inc ADC Products Inc Belden Mfg Co Bird Electric Corp Birnbach Radio Co Bliley Electric Co Inc Boston Gear Works Div of Murray Co of Texas Quincey Mass Willoughby Ohio Cambridge Mass Bud Radio Inc Cambridge Thermionics Corp Camloc Fastener Corp Paramus N J Cardwell Condenser Corp Lindenhurst L i Bussmann Mfg Div of McGraw Edison Co St Louis Mo From Handbook Supplements 4 1 Dated AUGUST 1966 Model 8414A Section VI Replaceable Parts Table 6 4 Code List of Manufacturers Cont Code No Manufacturer Addr
103. eter used Ohms lead polarities for some common ohm meters are shown in Table 8 3 When the ohm Model 8414 FIELD EFFECT TRANSISTORS BLACK EPOXY METAL CASE METAL CASE PLASTIC SGD 26 427 Ug OR E g WB DIODES DIODE SYMBOL ANODE CATHODE WIDE STRIPE amp 4 i 7 4 hh p CONICAL CATHOD W END 1 13 Section VIII Service BI POLAR TRANSISTORS BLACK EPOXY PLASTIC TRANSISTORS EBC METAL CASE TRANSISTORS Figure 8 1 Examples of Diode and Transistor Marking Methods meter indicates the least diode resistance the cathode of the diode is connected to the ohmmeter lead which is negative with respect to the other lead Note Diode replacement instructions are the same as those for transistor replacement 8 21 SCHEMATIC DIAGRAMS 8 22 The schematic diagrams in this section represent the circuits electrically They are not wiring diagrams though wire colors are given where practical 8 23 The circuits are arranged according to signal flow consequently some switch and circuit as semblies may be shown in part on more than one diagram If so the reference designation is pre ceded by P O for Part of and is followed by a notation of the number of parts into which the assembly has been divided 8 24 The large numbers in the lower right corners of the schematics are the schematic numbers These numbers are use
104. f its outputs one output going 10V more positive the other 10V less positive The front panel horizontal and vertical centering controls vary a dc bias to the associated driver producing the same effect as an input signal Intensity Modulator Inputs The Intensity Modulator controls the CRT grid to cathode bigs Intensity Modulator input signals cause the CRT s electron beam to be turned off for blanking or intensified for frequency markers There are three signal inputs to the intensity mod ulator one from the Network Analyzer mainframe which unblanks the CRT 8410A Network Ana lyzers unblank the CRT only when the Network Analyzer is phase locked the second a rear panel connector which may be connected to the sweep oscillator blanking output to blank the display dur ing sweep retrace the third another rear panel connector which may be connected to a sweep oscillator frequency marker output to display fre quency marks on the display by brightening the display at the point which represents the frequency of interest Switches Switch 192 is turned off by an unblanking signal from the Network Analyzer Although the output of 192 at A1TP8 is always a negative voltage when A1Q2 is turned off its output appears positive going to the following stage and the CRT is unblanked Switch A1Q1 is normally off When a positive blanking pulse is applied to its input Q1 conducts A1Q2 turns on the voltage at 1 8 goes more negat
105. gives full scale calibration of ten 3 18 Transmission Measurements of Attenuation or Gain in dB During calibration the display s outer ring is calibrated for 0 dB The attenuation or gain of the device under test may be determined by noting the Network Analyzer s test channel gain setting and changing the test channel gain to return the display to the outer circle The differ ence in test channel gain settings is the magnitude of the attenuation or gain lpisplay reference for 8407A Section Operation 3 19 Another way to determine attenuation or gain is to install a Return Loss overlay on the CRT The Return Loss overlay has concentric circles in 1 dB increments to 10 dB For attenuation of 10 dB or less attenuation can be read directly from the overlay For attenuation of greater than 10 dB or for gain measurements use a combination of change in Network Analyzer test channel gain and the Return Loss overlay For example if the initial display indicated an attenuation greater than 10 dB and a 12 dB increase in Network Analyzer test channel gain moved the display indication to mid point between the 0 and 1 dB graticule circles the total attenuation would be 12 dB plus 0 5 dB or 12 5 dB 3 20 Scattering Parameters Measurement 3 21 Measurement of scattering or s parameters is possible using the Polar Display With two swept tests for transmission and two for reflection a complete set of s parameters for any
106. hip with respect to the phase reference signal contains the information that is displayed on the CRT Switch Beam Center The test channel input signal is grounded when the Beam Center pushbutton is pressed or for the H26 8414A when the Auto Beam Centering circuit is activated With the input signal grounded there is no vertical or horizontal deflection voltage to the CRT the CRT display is a dot and the front panel centering controls may be used to locate the dot in the center of the CRT Preamplifier The preamplifier is a feedback pair amplifier with a voltage gain of about 25 At the output of the preamplifier the test channel signal path divides into two branches The signal in one branch is fed through a 90 degree phase shifter and driver to the sine detector The signal in the other branch is fed through a driver to the cosine detector Phase Shifter The phase shifter retards the phase of one output of the preamplifier 90 degrees The test channel input signal is then two signals separated in phase by 90 degrees or sine and cosine signals Drivers The sine detector driver and cosine detector driver isolate the sine and cosine detectors preventing interaction with the 90 degree phase shifter and preamplifier The gain through each driver is about unity Phase Splitter Limiter The phase splitter limiter amplifies the phase ref erence signal from the mainframe Its two output signals are limited to about 5V p p a
107. ide ring The difference in test channel gain settings is the magnitude of the trans mission gain or loss of the device under test lpisplay reference for 8407A 3 10 Figure 3 10 Transmission Measurement Model 8414 Section Operation Display A Polar Display with BEAM CTR Pushbutton Depressed Showing Beam Correctly Centered with HORIZ POS and VERT POS Controls Display B Swept Polar Display Correctly Calibrated for 1 0 180 Reflectometer Shorted at UNKNOWN port Figure 3 11 Typical Polar Displays During Initial Calibration Adjustment 3 11 Section III Model 8414A Operation a M M The H26 modification to the standard 8414A Polar Display allows computerized control of magnitude and phase data in the 8542A series Automatic Network Analyzer systems H26 8414A contains additional circuits as follows to achieve compatibility with the automatic system a Automatic beam centering programmable via 8419B b Manual offset adjusts for zeroing vertical horizontal outputs c Corrected or real time data display control programmable via 8419 a The automatic beam centering circuit permits the display spot to be centered on the screen by nulling the test channel signal under program control A 5 volt control signal from the 8419B activates the auto beam circuit producing the same
108. ine 9 and the output of the cosine detector is equal to the amplitude of its input signal times the cosine of the angle between the reference and test channel input signals cos Vertical and Horizontal Deflection Amplifiers The sine detector s output is amplified and fed to the CRT s vertical deflection plates The signals applied to the deflection plates produce a polar display of the relative magnitude and phase of the signals applied to the Network Analyzer Intensity Modulator The Intensity Modulator controls the CRT grid to cathode bias Intensity Modulator input signals cause the CRT s electron beam to be turned off for blanking or intensified for frequency markers There are three signal inputs to the intensity mod ulator one from the Network Analyzer mainframe which unblanks the CRT 8410A Network Ana lyzers unblank the CRT only when the Network Analyzer is phase locked the second a rear panel connector which may be connected to the sweep oscilator blanking output to blank the display during sweep retrace the third another rear panel connector which may be connected to a sweep oscillator frequency marker output to display frequency marks on the display by brightening the display at the point which represents the frequency of interest Power Supplies The 8414 obtains power from the Network Ana lyzer mainframe through the rear connector The mainframe furnishes 20 volts and 20 volts regu
109. ing is calibrated for a gain of one 0 dB 1 Phase angle for all transmission measurements may be read directly in degrees by drawing a radial line through the point on the dis play that represents the frequency of interest and reading the angle off the outside ring of the grati cule 3 17 Transmission Measurements of Attenuation or Gain in Transmission Coefficient If the unit under test is a passive device producing attenu ation of the test signal the transmission coefficient magnitude can be determined in the same manner as reflection coefficient i e the magnitude of the transmission coefficient may be read on the con centric circles using the scale 0 2 division with zero at the center and 1 0 at the outer circle For high attenuation measurements resolution can be improved by changing the full scale calibration To obtain higher resolution add additional gain to the test channel by setting the Network Analyzer test channel gain controls to a higher value For instance adding 14 dB gives full scale calibration of 0 2 and adding 20 dB gives full scale calibration of 0 1 If the device under test is an active device producing gain of the test signal the full scale calibration must be increased by setting the Net work Analyzer test channel gain controls to a lower value For instance removing 6 dB gives full scale calibration of two removing 14 dB gives full scale calibration of five and removing 20 dB
110. ion coeffi cient is a dot at the center of the graticule If the device does not have an impedance of 50 ohms at all frequencies the display of complex reflection coefficient is an irregular pattern which represents at each point specific frequency b Areflection coefficient magnitude and c Phase angle The angle between the inci dent voltage and reflected voltage at the plane of measurement The magnitude of the reflection coefficient of the device under test may be read on the concentric circles using the scale reflection coefficient 0 2 division with zero at the center and 1 0 at the outer circle The phase angle may be read directly in degrees by drawing a radial line through the point on the display that represents the frequency of interest and reading the angle off the outside ring of the graticule 3 10 High Resolution Display of Reflection Co efficient Measurements 3 11 device under test which is close to 50 ohms impedance produces a spot in the center of the CRT This center section of the CRT may be expanded to give high resolution so that slight mis match may be observed To obtain higher resolu tion add additional gain to the test channel by setting the Network Analyzer test channel gain controls to a higher value For instance adding 14 dB gives full scale calibration of 0 2 and adding 20 dB gives full scale calibration of 0 1 Since initially the system was calibrated for a reflection
111. ive and the CRT is blanked A negative marker pulse to switch A1Q4 turns Q4 on Its output voltage at 1 8 approaches ground and appears as a positive going input signal to the following stage This signal is more positive than the unblanking signal therefore the CRT s elec tron beam is intensified Differential Amplifier A1Q3 and 06 form a differential amplifier The amplifier gain varies with position of the intensity control however with the intensity control set for normal intensity about 3 6V at A1TP5 and the intensity limit set for about 110V at A1TP2 the amplifier gain is about seven or eight For example if the voltage at A1TP8 changes from 5V Q2 and 04 off to 0 1V Q2 off Q4 on a change of about 5V the output at A1TP3 should change from about 70 to about 105V a change of about 35V Emitter Follower The output of emitter follower A1Q7 should be about 65V for a blanked condition about 70V for an unblanked condition and about 105V for a marker condition CRT CRT Power Supplies 150V Power Supply The 150V power supply is a regulated supply Its output provides collector voltage for the deflection drivers High Voltage Oscillator The high voltage oscil lator is a free running multivibrator whose frequen cy 20 kHz 2 kHz is determined by the L and C of T1 s primary winding CRT Cathode Supply of T1 s secondary windings supplies power to both the CRT s cath ode supply an
112. l 18324 Signetics Corp Sunnyvale Cal 18476 Ty Car Mfg Co Inc Holliston Mass 18486 TRW Elect Comp Div Des Plaines Ill 18583 Curtis Instrument Inc Mt Kisco N Y 18612 Vishay Instruments Inc Malvern 18873 DuPont and Co Inc Wilmington Del 18911 Durant Mfg Co Milwaukee Wis 19315 The Bendix Corp Navigation amp Control Div Teterboro N J 19500 Thomas A Edison Industries Div of McGraw Edison Co n t s n s s s s West Orange N J 00015 46 Model 8414A Table 6 4 Code List of Manufacturers Cont Revised October 1969 6 16 Code No 19589 19644 19701 20183 21226 21355 21520 23042 23783 24455 24655 24681 26365 26462 26851 26992 28480 28520 30817 33173 35434 36196 36287 37942 39543 40920 42190 43990 44655 46384 47904 48620 49956 52090 52983 54294 55026 55933 55938 56137 56289 59446 59730 60741 61775 62119 63743 64959 65092 66295 66346 70276 70309 70318 70417 70485 70563 70674 70903 70998 71002 71034 71041 71218 71279 71286 71313 71400 Manufacturer Address Concoa LRC Electronics Electra Mfg Co General Atronics Corp Executone Fafnir Bearing Co The Fansteel Metallurgical Corp Texscan Corp British Radio Electronics Ltd Lamp Division General Radio Co Memcor Inc Comp Div Gries Reproducer Corp Grobert File Co of Ameri
113. lated which is used for low voltage stages and which provides primary power for the 84144 high voltage power supply The mainframe also fur nishes 175 Vac which provides primary power for the low voltage 250 Vdc and filament supply 278 5 CHANNEL AMPLITUDE SIGNAL FROM MAINFRAME 90 PHASE SHIFTER SIN 0 DETECTOR SPLITTER LIMITER s 9 rm an 2 O Ox N 278 KHz PHASE REFERENCE SIGNAL UU FROM MAINFRAME cos DETECTOR DISPLAY BLANKING SIGNAL MAINFRAME NEN BLANKING U INTENSITY MODULATOR MARKERS 9 V O INTENSITY Section VIII Service veRTicaL L _ OUTPUT 1 vERTICAL POS 9 SINO CTOR LV amp FILAMENT SUPPLY VERTICAL ILLUMINATION FOCUS HORIZONTAL H V SUPPLY 509 5 0 ECTOR O Pos RoRIZONTAL ourPUT Figure 8 10 Simplified Overall Block Diagram 8 9 Section VIII Service DETAILED BLOCK DIAGRAM DESCRIPTION HORIZONTAL AND VERTICAL AMPLIFIERS Test Channel Amplitude Input The test channel signal is applied to the Polar Dis play Unit from either the Network Analyzer main frame for the standard 84144A or from a rear panel BNC connector for the 26 8414 The amplitude of this signal and phase relations
114. le reflection on the polar display is suitable for the component you wish to measure Attach a sliding load such as the HP 905A in place of the device under test Slide the load and adjust the horizontal and verti cal controls until the circle rotates about the center of the CRT The effect of directivity is now can celled for this frequency and this test channel gain on the Network Analyzer Remove the slid ing load and connect the device under test The 84144 display is now the reflection coefficient of the device under test 3 36 H26 8414A POLAR DISPLAY 3 37 H26 modification to the standard 8414A Polar Display controls the display of magni tude and phase data in the Hewlett Packard 8542 series Automatic Network Analyzer systems The H26 8414A contains circuits to achieve compati bility with the automatic system The H26 8414A is also compatible with the standard Network Ana lyzer except for the test channel amplitude signal For the standard Network Analyzer and 8414A the test channel amplitude signal is fed to the 8414A through a 24 contact rear panel connector For the 26 8414 the test channel amplitude signal input is through a rear panel BNC connector TEST IN To use the H26 8414A in a standard Network Analyzer mainframe connect the Network Ana lyzer rear panel test output to the H26 8414A TEST IN See Figure 3 12 on page 3 12 lpisplay reference for 8407A LOCUS Figure 3 8 Locus of Measured Ref
115. lection with Directivity Cancelled 3 7 Section Model 8414A Operation REFLECTION COEFFICIENT MEASUREMENT CAUTION MECHANICAL SHOCK Do not bump or jar the Polar Display as misalign ment of the CRT gun may result MAGNETIC FIELDS Do not place the Polar Display near a sweep genera tor containing a BWO which has an unshielded magnet or the CRT will be permanently magnetized causing poor focus Separate the 8414A from any magnetic source by at least two feet DEVICE UNDER TEST NETWORK ANALYZER 8414A SWEEP OSCILLATOR LINE STRETCHER REFLECTOMETER Figure 3 9 Reflection Coefficient Measurement Sheet 1 of 2 3 8 Model 8414A Section III Operation REFLECTION COEFFICIENT MEASUREMENT CALIBRATION 5 Connect equipment as shown in setup Connect a coaxial short such as the HP 11565A to the reflectometer unknown port Phase lock the Network Analyzer over the desired frequency band Push and hold the 8414 BEAM CTR push button and adjust HORIZ POS and VERT POS controls to place the dot in the center of the graticule To bring the dot onto the display rotate each positioning control about five turns counterclockwise or until a slight increase in resistance to movement is encountered Then turn each control about two and one half turns clockwise NOTE CRT beam 51 the TEST NORMAL switch may be in the TEST position Refer to Figure 8 24 last foldout
116. libration of trace to CRT graticule Sets horizontal output voltage to zero when the BEAM CTR pushbutton is pressed Sets vertical output voltage to zero when the BEAM CTR pushbutton is pressed NOTES 1 A2C51 is selected to obtain 0 557 phase balance between reference and test channels 2 Adjustment locations are shown on the last foldout 5 3 Section V Model 8414A Adjustment Procedures ADJUSTMENT PROCEDURE CAUTION MECHANICAL SHOCK Do not bump or jar the Polar Display as misalign ment of the CR T gun may result MAGNETIC FIELDS Do not place the Polar Display near a sweep genera tor containing a BWO which has an unshielded magnet or the CRT will be permanently magnetized causing poor focus Separate the 8414A from any magnetic source by at least two feet 5 9 TRACE ALIGNMENT AND VERTICAL GAIN ADJUSTMENT DESCRIPTION For 8410A Network Analyzers a CW signal 15 applied to the Network Analyzer and a phase locked condition is set up so that the Network Analyzer unblanks the 8414A display 8407A Network Analyzers unblank the 8414A display without an input signal Function switch S1 is switched to the TEST position which isolates the deflection circuits from the input circuits so that only signals applied to the 8414A rear panel HORIZONTAL and VERTICAL outputs will be displayed on the CRT A 1 0 kHz deflection signal is applied to the 414 HORIZONTAL output to display a horizontal trace on the CRT The TRACE ALIGN
117. logy Instrument Corp of Calif Newbury Park Cal The following HP Vendors have no number assigned in the latest supplement to the Federal Supply Code for Manufacturers Handbook 0000F Malco Tool and Die Los Angeles Calif 0000Z Willow Leather Products Corp Newark N J 000AB ETA England 000BB Precision Instrument Components Co Van Nuys Cal 000CS Hewlett Packard Co Colorado Springs 12222020202 2 Colorado Springs Colorado 00015 45 Revised October 1969 6 18 000MM OOONN 000QQ 000WW 000Y Y Rubber Eng amp Development A N D Mfg Co Cooltron California Eastern Lab S K Smith Co Hayward Cal San Jose Cal Oakland Cal Burlington Cal Los Angeles Cal From Handbook Supplements H4 1 Dated AUGUST 1966 Model 8414 Section VII Manual Changes SECTION VII MANUAL CHANGES 7 1 INTRODUCTION 7 2 This section contains information for adapt ing this manual to instruments for which the con tent does not apply directly In addition informa tion about recommended modifications for im provements to the instruments is provided 7 3 MANUAL CHANGES 7 4 To adapt this manual to your instrument refer to Table 7 1 and make all of the manual changes listed opposite your instrument serial number 7 5 If your instrument and serial number is not listed on the title page of this manual or in Table 7 1 below it may be documented in a yellow MANUAL CHANGES supplement For a
118. magnetic source by at least two feet NETWORK ANALYZER OSCILLATOR MAINFRAME HP 84 SWEEP OSCILLATOR BLANK ING De ow nen eer OUT SPOUT 30 dBm TO NETWORK DC ANALYZER POWER REFERENCE SUPPLY CHANNEL INPUT ONLY 20 dB ATTENUATOR OSCILLOSCOPE 280 kHz OSCILLOSCOPE 100 mV NOTE FOR 8407A NETWORK ANALYZERS CONNECT THE SWEEP OSCILLATOR VTO OUTPUT TO THE 8407A VTO INPUT EQUIPMENT 20 dB 8491 OSCILLATOR 2 2 2 200 0 NETWORK 2 SWEEP 05 05 5 DC POWER 122 22 2 HP 180A 1801A 1821A DET HP 721A Figure 4 1 Performance Test Equipment Setup 4 2 Model 8414A Section IV Performance Tests PERFORMANCE TEST 4 8 ACCURACY TEST SPECIFICATION Error circle on CRT less than 3mm radius DESCRIPTION CW signal is applied to the Network Analyzer to provide a reference channel input signal to the 8414A A 280 kHz signal is applied to the 8414 amplitude channel through the Network Analyzer test channel output connector By adjusting the frequency difference be
119. mplifier A2Q19 Q20 is a feedback pair amplifier with a voltage gain of about 25 The out put of the preamplifier divides into two signal paths 90 Degree Phase Shifter The 90 Degree Phase Shifter A2Q1 shifts the phase of one output of the preamplifier 90 de grees The test channel signal is then two signals separated in phase by 90 degrees or sine and cosine signals Drivers The sine detector s driver A2Q2 Q3 and the cosine detector s driver A2Q21 prevent the detectors from loading the phase shifter and preamplifier output circuits The gain through each driver is about unity Phase Splitter Limiter The phase splitter limiter A2Q4 Q6 amplifies the phase reference signal from the mainframe Its two output signals are 180 degrees apart and limited to 8 12 about 5V p p These two signals are fed to the Sin and Cos Detectors and turn the detectors on one at a time Sin and Cos Detectors The and Cos Detectors 2 1 and A2A2 are balanced modulator phase detectors The sig nals from the phase splitter limiter turn the detec tors on one at a time during alternate half cycles of the turn on signal When the turn on signal from the phase splitter limiter causes the voltage at A2TP6 to be positive and A2TP7 to be negative the Cos detector is turned on During the next half cycle of the turn on signal the Sin detector is turned on Any signal appearing at the input A1TP3 or TP15 when
120. mplifiers is negli gible An adjustable bias voltage is provided A2R32 R33 to set the rear panel horizontal and vertical output voltages to zero with no test chan nel input signal Beam Center pressed Model 8414A R37 REC GAIN 1 oio 612 gey 60 8b ogy 429 zey uo 819 898 99H ob ogo SO 162 OZN 69H m 958 tio eS lu 228 bey 124 lt 2 6 20 23 nal 6013 242 tH 6 299 vau 520 20 20 220 662 SHO 869 924 669 149 262 029 S2 610 Figure 8 13 Phase Shifter and Phase Detectors Component Identification PART A2 CO ORDINATE CONVERTER ASSEMBLY 08414 6028 2 28 SWITCH N PREAMPLIFIER I R5 196 90 PHASE SHIFTE ADJI 0 05 AIXA2 20V I R3 1 BEAM CENTER dus 4 278 A4J2 wi CHANNEL Sia 2 AMPLITUDE i 511 SIGNAL 919 Q20 FROM R2 CR2 1853 0020 1854 0071 MAIN z 4 5110 FRAME 1 WIRING R7 wip OPTION 61 9K v6 LIN FOR 26 8414 16 240 20V 278kHz I7V R65 s 5 2 1 278 kHz 1 M 278 kH PHASE i o SIGNAL 24 6 2 FROM S 278 kHz 20V MAINFRAME i t 1 ME R
121. nd fed to the sin and cos detectors These signals turn the detectors on one at a time 8 10 Sin and Cos Detectors The sine and cosine detectors are balanced modulator phase detectors The signals from the phase splitter limiter turn the detectors on one at a time during alternate half cycles of the turn on signal When the turn on signal from the phase splitter limiter causes the voltage at A2TP6 to be positive and A2TP7 to be negative the cosine detector is turned on During the next half cycle of the turn on signal the sine detector is turned on Any signal appearing at the input A2TP3 or 15 when a detector is turned on will be passed through the detector and the detector s output capacitor wil charge to the average of the signal passed through the detector When the input signal A2TP3 or TP15 is in phase with the turn on sig nal the detector s output is maximum positive When the input signal is 180 degrees out of phase with the turn on signal the detector s output is maximum negative When the input signal is exactly 90 degrees with respect to the turn on signal the average of the detector s output signal is zero Therefore a detector s output can vary from a maximum positive 0 degrees phase difference to a maximum negative 180 degrees phase differ ence and back to a maximum positive 360 degrees phase difference The magnitude of the maximum positive and negative detector output voltages is
122. ntary PORC 7 metalized POS substrate POT mounting mylar PWV nano 1079 normally closed RECT 7 neon RF RH nickel plate plug transistor resistor thermistor switch transformer terminal board test point integrated circuit HWH H H H H m Hou normally open nominal negative positive zero zero tem perature coef ficient negative positive negative not recommended for field re placement not separately replaceable order by description oval head oxide peak printed circuit picofarads 10 12 farads phosphor bronze Phillips peak inverse voltage positive negative positive part of polystrene porcelain position s potentiometer peak to peak point peak working volt age uod Hog H H ou H H H rectifier radio frequency round head or right hand V vacuum tube neon bulb photocell etc VR voltage regulator w cable x socket Y crystal 7 tuned cavity network RMO rack mount only RMS root mean square RWV reverse working voltage S B slow blow SCR Screw SE selenium SECT section s SEMICON semiconductor SI silicon SIL silver SL slide SPG spring SPL special SST Stainless steel SR split ring STL steel TA tantalum TD time delay TGL toggle THD thread TI titanium TOL tolerance TRIM trimmer TWT iraveling wave tube 106 VAR variable VD
123. ntil the oscilloscope presentation is again 0 707 of the amplitude noted in step b Note the oscillator frequency e difference in frequency noted in steps c and d must be greater than 10 kHz f Return the oscillator frequency to 280 kHz connect oscilloscope to the 8414A rear panel HORIZONTAL output and note the peak to peak amplitude g Repeat steps c through e 4 10 MARKER AND BLANKING INPUT TESTS Rear Panel SPECIFICATION 5 volt marker input intensifies the CRT display 5 volt blanking input blanks the CRT display DESCRIPTION 5 volts dc is applied to the rear panel MARKER input The intensity of the CRT trace should increase 5 volts is connected to the rear panel BLANKING input The CRT trace should be blanked Model 8414 Section IV Performance Tests PERFORMANCE TEST PROCEDURE a If equipment was altered from previous test repeat procedures in Paragraph 4 8 to obtain a trace on the CRT s outer graticule circle b Adjust the power supply to 5 volts Apply 5 volts to MARKER input connector on Polar Display and 5 volt return to chassis ground Connect and disconnect 5 volts several times Intensity of CRT trace should brighten when 5 volts is applied c Disconnect 5 volts from MARKER input connector and connect it to BLANKING input connector The trace should be blanked Table 4 2 Performance Test Record Hewlett Packard Model 8414A Date Polar Display Test
124. ntly magnetized causing poor focus Separate the 8414A from any magnetic source by at least two feet DEVICE UNDER SWEEP OSCILLATOR PWR TEST DIVIDER NETWORK ANALYZER 8414A STRETCHER CALIBRATION 4 Obtain equal reference and test channel electrical lengths by adjusting the Line Connect equipment as shown in setup with out the device under test Phase lock the Network Analyzer over the desired frequency band Push and hold the 8414A BEAM CTR push button and adjust HORIZ POS and VERT POS controls to place the dot in the center of the Polar Display To bring the dot onto the display rotate each positioning control about five turns counterclockwise or until a slight increase in resistance to movement is encountered Then turn each control about two and one half turns clockwise NOTE If an input signal does not deflect the CRT beam S1 the TEST NORMAL switch may be in the TEST position Refer to Figure 8 24 last foldout for location of S1 and set S1 to NORMAL Stretcher to collapse the trace to a dot or smallest cluster Adjust the Network Analyzer phase vernier test channel gain and amplitude vernier controls to place the dot or cluster for a reference indication of 7 1 0 MEASUREMENT Insert the device under test Note the Network Analyzer test channel gain setting This is the calibrated gain setting Adjust the test channel gain con trols to locate the CRT display on the outs
125. of each control 5 5 FACTORY SELECTED COMPONENTS 5 6 A2C51 is the only factory selected compo nent It is selected see paragraph 5 15 to obtain the proper phase balance between the reference and test channels however the Network Analyzer mainframe phase vernier control has sufficient range to obtain the proper phase balance for most applications 5 7 EQUIPMENT REQUIRED 9 8 The test instruments and accessories required to perform the adjustment procedures are listed in Table 5 1 Test instruments other than the ones listed can be used provided their performance equals or exceeds the Critical Specifications listed 5 1 Section V Adjustment Procedures DC Power Supply 5 2 Item Oscillator Oscilloscope Dual Trace Table 5 1 Critical Specifications Frequency Range 280 50 kHz and 1 0 1 kHz Output Level Variable from 0 to 3 0 Vrms Output Impedance 50 to 600 ohms Output 5 Vdc Vertical Minimum bandwidth 5 MHz Minimum Sensitivity 10 mV Input dc and ac Horizontal Range 1 usec cm to 5 usec cm Network Analy zer Transducer No substitute may be used Recommended Test Equipment Frequency Range Same as Sweep Oscillator Sweep Oscillator 20 dB Attenuator Termination Frequency Range Any frequency within the operating range of the Network Analyzer Impedance 50 ohms nominal Attenuation 20 dB 3 dB SWR 1 3 max 1 kHz and 280 kHz Connector BNC
126. oles using a suction desoldering aid Table 8 2 or wooden toothpick c Shape leads or replacement component to match mounting hole spacing d Insert component leads into mounting holes and position component as original was posi 8 1 Section VIII Service Item Soldering Tool Soldering Tip general pur pose De soldering aid Resin solvent flux Solder Protective Coating Table 8 2 Printed Circuit Soldering Equipment Model 8414A Use Specification Item Recommended Soldering Wattage Ratings 37 5 Ungar 776 Handle with Unsoldering Tip Temp 750 800 F Ungar 1237 Heating Tip Size 1 8 OD Unit Soldering Shape chisel Ungar PL113 Unsoldering Size 1 8 Unsoldering multiconnec Suction device to remove Soldapullt by the Edsyn tion components e g molten solder from Company Arleta sockets connection California Remove excess flux from Must not dissolve etched Freon soldered area before appli circuit base board material Acetone cation of protective coating Component Replacernent Circuit Board repair Wiring Contamination corrosion protection after soldering or conductor bonding agent Resix flux core high tin content 60 40 tin lead 18 gauge SWG preferred Good electrical insulation corrosion prevention prop erties Lacquer Thinner Isopropyl Alcohol 10070 dry GE DR1 FILM 88 General Electric Co tioned Do not force leads of repl
127. ommon LIN composition LK WASH complete LOG connector LPF cadmium plate cathode ray tube M clockwise MEG eposi arbon MET FLM deposited carb MET OX MFR electrolytic MHz encapsulated MINAT external MOM MOS farads flat head MTG Fillister head MY fixed 9 N giga 107 N C germanium NE glass ground ed NI PL bers Section VI Replaceable Parts Manufacturer s part number Total quantity used TQ column 6 3 ORDERING INFORMATION 6 4 To obtain replacement parts address order or inquiry to your local Hewlett Packard Field Office Identify parts by their Hewlett Packard stock num 6 5 obtain a part that is not listed include Instrument model number Instrument serial number Description of the part Function and location of the part Reference Designations and Abbreviations REFERENCE DESIGNATORS fuse P Filter Q jack R relay RT inductor 5 loud speaker T meter TB microphone TP mechanical part ABBREVIATIONS henries N O hardware NOM hexagonal NPO mercury hour s Hertz NPN intermediate freq impregnated NRFR incandescent include s insulation ed NSR internal kilo 1000 OH left hand OX linear taper P lock washer PC logarithmic taper PF low pass filter PH BRZ milli 10 3 PHL meg 106 PIV metal film metallic oxide PNP manufacturer mega Hertz P O 7 miniature POLY mome
128. ot the A2 Assembly from Preamplifier to Buffer Ampli fiers using information on Sche matic 1 Troubleshoot Low Pass Filter circuits using infromation on Schematic 2 Model 8414 2000000900000 IP Uy A2 ASSEMBLY 1 ASSEMBLY Figure 8 11 Test Point Locations HORIZONTAL AND VERTICAL 2 ASSEMBLY 1 I 278 kHz TEST l4 CHANNEL lt AMPLITUDE SIGNAL FROM MAINFRAME SWITCH BEAM CENTER PRE AMPLIFIER H26 8414A J6 FOR H26 8414A IN LTEST IN PHASE SPLITTER LIMITER 278 kHz PHASE c l REFERENCE SIGNAL FROM MAINFRAME 15 cos DETEC BEAM Al ASSEMBLY CTR FROM MAIN FRAME FOR H26 8414A J r J2 SWITCH MARKER Q4 1 DISPL AY DISABLE 7 SIGNAL FROM lt l MAINFRAME Jl N 4 SWITCH N LBLANKING oN NM intensity 21 I75V lt T FROM 9 DIFF AMPLIFIER SWITCH 92 FOLLOWER HORIZONTAL AND VERTICAL AMPLIFIERS eC PAI Al AS VERTICAL DEFLECTION DRIVER BUFFER AMPLIFIER LOW PASS FILTER 281 FUNCTION x Cos 9 HORIZONTAL BUFFER LOW x _ 5100 V CATHODE GRID FILAMENT FILAMENT D
129. oubleshoot A1Q7 circuit Table 8 5 Intensity Modulator DC Voltage Measurements Voltage Measurement Point Condition A1TP5 A1TP9 A1TP8 A1Q2B A1Q2E 193 A1Q6E and AITP3 I 3 6V 3 14 13 5 14 6 5 4 2 65V 3V 8410A only 1V 1V 1V 1V 0 5V 0 5 3 6V 18 4 8 18 15 5 5 4 2 70 3V 2V 0 5V 2V 0 5V 0 1V 65 to 85V 3 4 18 0 7 18 15 0 6 3 5 108 4V 0 2V 2V 0 1V 2V 1V 0 1V 0 1V 102 to 108 4 3 5 18 13 5 13 13 5 7 4 2 65 3V 0 1V 2V 1V 1V 1V 0 1V none 1 No RF signal to 8410A Network Analyzer No unblanking signal Does not apply for 8407 A Network Analyzer II Unblanking signal from Network Analyzer Network Analyzer phase locked for 8410 Unblanking signal from Network Analyzer and 5 applied to 22 MARKER INPUT IV Unblanking signal from Network Analyzer and 5V applied to 71 BLANKING INPUT 2 Adjust R20 Intensity Limit control for 110V at A1TP2 3 Adjust front panel INTENSITY control for 3 6V at AITP5 INTENSITY control will vary voltage from about 2 5V to 4 8 4Amount voltage will vary with front panel INTENSITY control Low Pass Filters and Horizontal anc SERVICE SHEET 2 Section VIII Service 5 3 CIRCUIT DESCRIPTION Inputs The Intensity Modulator controls the CRT grid to cathode bias Intensity Modulator input signals cause the CRT s electron beam to be
130. pacitors inside this product may still be charged even when disconnected from its power source To avoid a fire hazard only fuses with the required current rating and of the specified type normal blow time delay etc are to be used for replacement 1 3 1 4 Model 8414 Section II Installation SECTION II INSTALLATION 2 1 INITIAL INSPECTION 2 2 Inspect the instrument for shipping damage as soon as it is unpacked Check for broken knobs and connectors inspect cabinet and panel surfaces for dents and scratches Check electrical perform ance using procedures in Section IV If the instru ment is damaged in any way or fails to operate properly notify the carrier and your nearest Hewlett Packard Sales and Service Office In the event of mechanical damage the packing material and carton should be held for carrier s inspection For assistance of any kind including instruments under warranty contact the nearest Hewlett Packard Sales Office 2 3 REPACKAGING FOR SHIPMENT 2 4 Using Original Packaging 2 5 The same type containers and materials used in factory packaging can be obtained through any Hewlett Packard office 2 6 If the Model 8414 is being returned to Hewlett Packard for servicing attach a tag indi cating the type of service required return address model number and full serial number Also mark the container FRAGILE to assure careful handling 2 7 any correspondence refer to the instr
131. pecific frequencies on a broadband display 3 31 Display Blanking 3 32 Blanking pulses from HP 690 and 8690 series Sweep Oscillators may be applied to a rear panel blanking input connector blanking the CRT during sweeper retrace A blanking signal is also obtained from the 8410A Network Analyzer main frame The 8410A Network Analyzer automati cally produces a blanking signal whenever it is not tuned to its input signals This blanking signal is fed internally to the 8414A The 8407A main frame does not produce this second form of blank ing 3 33 Increased Accuracy for Reflection Measure ments by Minimizing Directivity Errors 3 34 Directivity errors become significant in the measurement of small reflection coefficients but the error can be calibrated out at single frequen lpisplay reference for 8407A 3 5 Section III Operation CLEAR OVERLAYS Internal graticule lines will show through overlay Return Loss Viewing HP Part Number E n 10 Standard Smith Chart Viewing Expanded Smith Chart Viewing cose PETRAM n WE N Compressed Smith Chart Viewing Note Model 8414 OPAQUE OVERLAYS Internal graticule lines masked so only the overlay lines are visible There is a photographic overlay similar to each overlay above The photo graphic overlays correct for parallax Figure
132. pos INTENS iTy ge Figure 1 1 Model 8414 Polar Display 1 0 Model 8414 Section I General Information SECTION I GENERAL INFORMATION 1 1 DESCRIPTION 1 2 The Hewlett Packard Model 8414A Polar Dis play Figure 1 1 is a plug in display unit for Hewlett Packard Model 8410A and Model 8407A Network Analyzers It displays in polar form on a five inch CRT the relative phase and magnitude of the signals applied to the Network Analyzer 1 3 The CRT s internal graticule has five circular magnitude divisions and 36 radial ten degree phase divisions Full scale magnitude calibration is deter mined by controls on the Network Analyzer The internal graticule augmented by a set of snap on overlays allows the display to be read directly in reflection coefficient impedance or return loss for maximum convenience in viewing and photo Table 1 1 Range Normalized polar coordinate display magnitude calibration 20 percent of full scale per division Scale factor is a function of gain setting on Network Analyzer Max imum scale factor 10 minimum 0 0316 Phase is calibrated in ten degree increments over 360 degree range Accuracy Error circle on CRT less than 3 mm radius Output Two dc outputs provide horizontal and vertical components of polar quantity For full scale deflection output is nominally 2 5 volts source impedance less than 100 ohms minimum bandwidth 3 dB 10 kHz Drift CRT lt 0 2 mm
133. pyright HEWLETT PACKARD COMPANY 1970 1501 PAGE MILL ROAD PALO ALTO CALIFORNIA U S A MANUAL PART NO 08414 90016 Microfiche Part No 08414 90013 Printed SEPT 1973 HEWLETT PACKARD Table of Contents TABLE OF CONTENTS Section I GENERAL INFORMATION 1 1 Description 1 4 Equipment Supplied 1 6 Instruments Covered by Manual 1 10 Options II INSTALLATION 2 1 Initial Inspection 2 3 Repackaging for Shipment 2 4 Using Original Packaging 2 8 Using Other Packaging 2 10 Preparation for Use 2 11 Installation 2 13 Power Requirements III OPERATION 3 1 Introduction 3 3 Panel Features 3 5 Measurement Procedures 3 1 Operating Information 3 8 Polar Display of Reflection Coefficient and Phase Angie 3 10 High Resolution Display of Reflection Coefficient Meas urements 3 12 Polar Display of Return Loss 3 15 Polar Display of Transmission Measurements 3 20 Scattering Parameters Measure ment 3 22 Polar Display of Normalized Impedance and Admittance 3 24 Alternate Smith Chart Over 8 3 29 Marking Frequency on the Display 3 31 Display Blanking 3 33 Increased Accuracy for Reflec tion Measurements by Min imizing Directivity Errors 3 36 H26 8414A Polar Display Page 3 1 3 3 3 3 3 4 3 4 3 5 3 5 3 5
134. result as depression of the manual beam center switch on the front panel Refer to the block diagram b The dc offset adjustments allow zeroing of the vertical and horizontal buffer amplifier outputs when in the beam centering mode Manual adjustment of vertical and horizontal potentiometers reduces the output voltages at the rear panel BNC connectors to zero when a 0 volt test channel input or beam center signal is applied The front panel vertical and horizontal position controls can then be used to center the beam spot as desired c The corrected real time display circuit contains a relay switch actuated by a ground level control signal from the 8419B With the relay set in the manual position vertical and horizontal data outputs are displayed on the screen in real time With the relay set to the auto position vertical and horizontal data outputs are routed through the 8419B to the computer and returned as corrected data for display VERTICAL POSITION VERTICAL DC OFFSET VERTICAL DEFLECTION CIRCUITS REAL TIME MANUAL BEAM CENTER AUTO BEAM CENTER CORRECTED TEST BLANKING HORIZONT AL DC OFFSET HORIZONTAL DEFLECTION p 4 CIRCUITS REAL TIME CORRECTED Q HORIZONTAL POSITION DRIVER AMP BLANKING 84198 NETWORK ANALYZER INTERFACE 11621 SYSTEM CONTROL PANEL 2116 COMPUTER 3 12 Figur
135. s is equal to the radius of the CRT s outer graticule circle NOTE It may be necessary to adjust the HORIZ and VERT POS controls to locate the average of the trace over the outer graticule circle g The trace must be less than 3 mm from the outer graticule circle around the entire circle 3 mm is about the center of the numbers on the CRT s graticule 4 3 Section IV Model 8414A Performance Tests PERFORMANCE TEST 4 9 HORIZONTAL AND VERTICAL OUTPUT TESTS Rear Panel SPECIFICATION Bandwidth of rear panel horizontal and vertical outputs at 3 dB points 10 kHz minimum DESCRIPTION rear panel HORIZONTAL VERTIAL output amplitude is observed on an oscilloscope the test channel input frequency is varied and the upper and lower frequencies at which the outp t amplitude decreases 3 dB is determined The difference between the upper and lower 3 dB points must be greater than 10 kHz PROCEDURE a If equipment was altered from paragraph 4 8 repeat procedures in Paragraph 4 8 to obtain a trace on the CRT s outer graticule circle b Connect oscilloscope to 8414A rear panel VERTICAL output and note peak to peak amplitude c Increase frequency of the oscillator connected to the Network Analyzer test channel output connector until the oscilloscope presentation decreases to 0 707 of the amplitude noted in step b Note the oscillator frequency d Decrease the oscillator frequency through 278 kHz u
136. similarly produces a voltage that corresponds to the value of which is amplified and applied to the X axis or horizontal deflection plates The foregoing discussion explains the method of developing a spot on the CRT that represents the behavior of a device under test at one frequency During swept frequency operation the device under test reacts differently as the frequency is changed This causes a continuous trace to be pro duced on the CRT This trace may be interpreted as follows Amplitude is proportional to distance from the center of the CRT phase can be read directly from the built in graticule and frequency is indicated by marker pips superimposed on the trace through the intensity modulator circuit Marker signals applied to this circuit from a Sweep Oscillator cause a bright pip on the trace In this manner specific frequencies may be located on the CRT display SIMPLIFIED BLOCK DIAGRAM DESCRIPTION Test Channel Amplitude and Phase Reference Sig nal Inputs A 278 kHz test channel amplitude signal and a 278 kHz phase reference signal are obtained from the Network Analyzer mainframe The test channel signal passes through a preamplifier and divides into two signal paths One signal is shifted by 90 degrees and fed to the sine detector The other signal is fed to a cosine detector The 278 kHz phase reference signal is fed to a phase splitter limiter which produces two signals 180 degrees apart These two
137. sociates Inc Excel Transformer Co Xcelite Inc San Fernando Elect Mfg Co Thomson Ind Inc Industrial Retaining Ring Co Automatic amp Precision Mfg Reon Resistor Corp Litton System Inc Chicago Sunnyvale Cal Olean N Y Mt Carmel Il Los Angeles Cal Freeport Chicago IH Burlington Mass m Oakland Cal Orchard Park San Fernando Cal Long Island N Y Irvington N J Englewood Yonkers Adler Westrex Commun Div New Rochelle N Y Jamaica N Y Gardena Cal Pasadena Cal So Pasadena Cal Mamaronech N Y Burbank Cal Cleveland Ohio Minneapolis Minn Palo Alto Cal Glen Cove N Y Burbank Cal New York N Y Palo Alto Cal R Tronies Inc Rubber Teck Inc Hewlett Packard Co Moseley Div Microdot Inc Sealectro Corp Zero Mfg Co Etc Inc General Mills Inc Electronics Div Paeco Div of Hewlett Packard Co North Hills Electronics Inc International Electronic Research Corp Columbia Technical Corp Varian Associates Atlee Corp Winchester Mass Marshall Ind Capacitor Div e Monrovia Cal Control Switch Division Controls Co of America Segundo Cal East Aurora Indianapolis Ind Delevan Electronies Corp Wilco Corporation Branson Corp Whippany N J Rembrandt Inc Boston Mass Hoffman Electronics Corp Semiconductor Div 122202022 El Monte Cal Techno
138. tes that the instrument is different from those documented in this manual The manual for this instrument is supplied with a yellow Manual Changes supplement that contains change inform ation that documents the differences 1 9 For information concerning a serial number prefix not listed on the title page or in the Manual Changes supplement contact your nearest Hewlett Packard office 1 10 OPTION 1 11 The Option H26 modification to the stand ard 8414A Polar Display allows computerized control of magnitude and phase data in the 8542A series Automatic Network Analyzer systems See Figure 3 12 for further information Model 8414 Section I General Information SAFETY CONSIDERATIONS GENERAL This product and related documentation must be reviewed for familiarization with safety markings and instructions before operation This product has been designed and tested in accordance with inter national standards SAFETY SYMBOLS A Instruction manual symbol the product will be marked with this symbol when it is necessary for the user to refer to the instruc tion manual refer to Table of Contents f Indicates hazardous voltages 4 Indicates earth ground terminal The WARNING sign denotes a hazard It calls attention to a procedure practice or the like which if not correctly performed or adhered to could result in personal injury Do not proceed beyond a WARNING sign until the indicated conditions
139. tors to blank re trace during sweep operation Background Illumination Controls intensity of CRT background illumination for photog raphy Eliminates need for ultraviolet light source in oscilloscope camera when photo graphing internal graticule Power Additional 35 watts supplied by Net work Analyzer Weight Net 11 lb 4 9 kg Dimensions 6 in high 15 9 16 in deep 7 9 32 in wide 15 2 x 39 5 x 18 6 cm exclud ing front panel knobs 1 1 Section I General Information 1 4 EQUIPMENT SUPPLIED 1 5 The Polar Display has 16 chart overlays provided as accessories 12 Smith Chart and four return loss overlays These overlays are plastic sheets that snap onto the face of the CRT Three different Smith Chart scale factors are used and four different styles of each scale are supplied for different applications refer to Figure 3 5 1 6 INSTRUMENTS COVERED BY MANUAL 1 7 This instrument has a two part serial number The first four digits and the letter comprise the serial number prefix The last five digits form the sequential suffix that is unique to each instrument contents of this manual apply directly to in struments having the same serial number prefix es as listed under SERIAL NUMBERS the title page 1 2 Model 8414A 1 8 An instrument manufactured after the print ing of this manual may have a serial prefix that is not listed on the title page This unlisted serial pre fix indica
140. turned off for blanking or intensified for frequency markers There are three signal inputs to the intensity mod ulator one from the Network Analyzer mainframe which unblanks the CRT 8410A Network Ana lyzers unblank the CRT only when the Network Analyzer is phase locked the second a rear panel connector which may be connected to the sweep oscillator blanking output to blank the display dur ing sweep retrace the third another rear panel connector which may be connected to the sweep oscillator frequency marker output to display fre quency marks on the display by brightening the display at the point which represents the frequency of interest Switches Switch A1Q2 is turned off when the Network Analyzer is phase locked Although the output of A1Q2 at A1TP8 is always a negative voltage when A1Q2 is turned off its output appears positive going to the following stage and the CRT is unblanked Switch A1Q1 is normally off When a positive blanking pulse is applied to its input 191 con 8 16 ducts which turns 192 on The voltage at A1TP8 goes more negative and the CRT is blanked A negative marker pulse turns switch A1Q4 on its output voltage at 1 8 approaches ground and appears as a positive going input signal to the fol lowing stage This signal is more positive than the unblanking signal therefore the CRT s electron beam is intensified Differential Amplifier A1Q3 and 96 form differential amplifier Th
141. tween these two signals a circle can be displayed on the 8414A The radius of this circle is adjusted to the radius of the outer graticule circle by adjusting the amplitude of the 280 kHz signal The trace must be less than 3 mm from the outer graticule circle around the entire circle PROCEDURE a Connect equipment as shown in Figure 4 1 b Set the sweep oscillator for single frequency operation at any frequency within the frequency range of the Network Analyzer c Set the Network Analyzer to phase lock to the applied signal and adjust the sweep oscillator RF amplitude for a Network Analyzer reference channel level meter indication in the middle of the operate region d Press and hold the 8414A BEAM CTR pushbutton and adjust the HORIZ and VERT POS controls to locate the dot in the center of the Polar Display s CRT To bring the dot onto the display rotate each positioning control about 5 turns counterclockwise or until a slight increase in resistance to movement is encountered Then turn each control about 2 turns clockwise e Set the Network Analyzer test channel gain controls for 00 dB For 8407A Network Analyzers set display reference controls to bottom position f Adjust the oscillator connected to the Network Analyzer test channel output as follows 1 Adjust the frequency to obtain the best circle The best circle will occur when the trace has slight flicker 2 Adjust the output amplitude to obtain a circle whose radiu
142. two port device may be derived The four parameters that must be obtained are a 811 input reflection coefficient with the output port terminated by a matched load b 599 output reflection coefficient with the input terminated by a matched load c 591 forward transmission coefficient with the output port terminated in a matched load Figure 3 3 Typical Smith Chart Display of Normalized Impedance 3 4 Model 8414A d 819 reverse transmission coefficient with the input port terminated in a matched load The input reflection coefficient 511 and the out put reflection coefficient S29 may be obtained using the procedure and setup in Figure 3 9 The transmission coefficients 591 and S12 may be obtained using the procedure outlined in Figure 3 10 Paragraph 3 17 describes how to read atten uation or gain in transmission coefficient 3 22 Polar Display of Normalized Impedance and Admittance 3 23 With the Network Analyzer test channel gain set to the calibrated value giving an indica tion of 1 0 full scale a Smith Chart overlay may be used on the CRT to convert the reflection coefficient and phase angle directly to impedance or admittance The standard Smith Chart overlay contains a horizontal line through the center repre senting the resistance component of the load impedance The center of the resistance line is 1 0 corresponding to the normalized 50 ohm point Circles passing through the horizont
143. u ment by model number and full serial number 2 8 Using Other Packaging 2 9 The following general instructions should be used when repackaging with commercially available materials a Wrap the 84144 in heavy paper or plastic If shipping to a Hewlett Packard serivce office or center attach a tag indicating the type of service required the return address model number and full serial number b Use a strong shipping container A double wall carton made of 350 pound test material is adequate c Use enough shock absorbing material three to four inch layer around all sides of the instrument to provide firm cushion and prevent movement inside the container Protect the control panel with cardboard d Seal the shipping container securely and mark it FRAGILE to assure careful handling e In any correspondence refer to the instru ment by model number and full serial number 2 10 PREPARATION FOR USE 2 11 Installation 2 12 Instructions for installing the Polar Display in the Network Analyzer mainframe are in the Net work Analyzer Operating and Service manual 2 13 Power Requirements 2 14 The Polar Display obtains power from the Network Analyzer mainframe through the rear connector when it is properly installed Model 8414 Section Operation SECTION III OPERATION 3 1 INTRODUCTION 3 2 Signals from the Network Analyzer contain ing phase and amplitude information are fed to the 841
144. y be any angle The sine wave relationship in Figure 8 5 may be converted to a polar relationship as shown in Fig ure 8 6 by laying out the 360 degrees in a circle and projecting the amplitude The reference and REFERENCE SIGNAL TEST CHANNEL SIGNAL AMPLITUDE Figure 8 5 Phase and Amplitude Relationship of Typical Reference and Test Signals 8 8 90 REFERENCE SIGNAL AMPLITUDE gt Figure 8 6 Conversion of Typical Time Amplitude Graph to Polar Graph test signal vectors are shown on the polar graph at zero time Note that the reference signal starts at zero and the test signal leads it by an angle As time progres ses the two polar vectors rotate in the counter clockwise direction Since both the reference and the test signals are at the same frequency their vectors rotate at the same rate always separated by an angle therefore angle or phase is measured with respect to the reference signal The Polar Display must resolve the vector of the test signal shown in Figure 8 7 into a similar form Y VERTICAL AXIS TEST CHANNEL SIGNAL VA VECTOR WITH AMPLITUDE HORIZONTAL AXIS Figure 8 7 Polar Vector of Test Signal Model 8414A Y VERTICAL ILLUMINATED SPOT X HORIZONTAL Figure 8 8 Horizontal and Vertical Vectors Required to Deflect CRT Beam that can be displayed on the CRT This is done by producing an illuminated

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