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HP 8743A User's Manual

1. Encloses rear panel designation Circuit assembly borderline Other assembly borderline Numbers in circles on circuit assemblies show locations of test points Matching numbers are etched on the circuit assemblies C Encloses wire color code Code used MIL STD 681 is the same as the resistor color code First number identifies the ground color second number the wider stripe and the third number identifies the narrower stripe E G denotes white ground yellow wide Stripe violet narrow stripe 10 Voltage regulator breakdown diode 14 15 6 2 Power Supply Common not chassis ground f2 Screwdriver adjustment C Panel control Heavy dashed line indicates feedback path lt e Wiper moves toward CW with clockwise rotation of control as viewed from shaft or knob Figure 6 2 Schematic Diagram Notes Section VI Model 8743A VX IV X coad MOTA 0107108 101720171709701 lu uoduto5 VE L8 2 20 0 4 311 F 9 doy V PL98 9v GV 0 IV 154 A 9 c V 6 3 Model 8743A Section VI 4 76 9 1434 SNVYL 1 p 4314002 E 60 Wide SNVH Q 02 S3H21IMS 171 02 TF gp OI 03102 160 gp 0 32
2. Electro M dica S A Los Flamencos 145 San Isidro Casilla 1030 Lima 1 Tel 41 4325 Telex Pub Booth 25424 0 Cable ELMED Lima SURINAME Sunel Radio Holland v Grote Hofstr 3 5 PO Box 155 Paramaribo Tel 72118 77880 Cable Surtel TRINIDAD amp TOBAGO CARTEL Caribbean Telecoms Lte P 0 Box 732 Frederick Street Port of Spain Te 62 53068 URUGUAY Pablo Ferrando S A C el Avenida Italia 2877 Casilla de Correo 370 Montevideo Tel 40 3102 Telex 702 Public Booth Para Pablo Ferrando Cable RADIUM Montevideo VENEZUELA Hewlett Packard de Venezuela A c Box 50933 Caracas 105 Los Ruices Norte 3a Transversal Edificio Segre Caracas 107 Te 238 4133 120 unes Telex 25146 HEWPACK Cable HEWPACK Caracas FOR AREAS NOT LISTED CONTACT Hewlett Packard Inter Americas 3200 Hillview Ave Palo Alto Catifornia 94304 Tel 4151 856 1501 TWX 910 373 1280 Cable HEWPACK Palo Alto Telex 034 8300 034 8493 EUROPE NORTH AFRICA AND MIDDLE EAST UNITED STATES USTRIA 0 Ges m b H lt 52 PO Box A 1205 Vienna Tet 7 Cabie HEWPAK V enra Telex 75923 hewpak a BAHRAIN Only Pharmacy 648 Tel 54886 56 23 Telex 8550 WAEL GJ Cable WAELPHARM Analytical Only A Trading and Contracting PQ Box 20074 Manama 259978 259958 Telex 8895 KALDIA GJ BELGIUM Hewlett Packard B
3. 4 2 Test Dm a da 1 0 4 2 Insertion Loss Troubleshooting 4 7 3 1 Front Panel Features 3 2 4 3 Position of Outer Conductor Washer 4 8 3 2 Rear Panel Features 3 3 6 1 General Information on 3 3 Reflection Measurement Using Net Schematic Diagrams 6 1 work Analyzer with 8413A Display 3 4 6 2 Schematic Diagram Notes 6 2 3 4 Transmission Measurement Using 6 3 8743A Component Identification Network Analyzer with 8413A Top View Sieh 6 3 Display Unit NE a 3 6 6 4 8743A Component Identification 3 5 Reflection Measurement Using Bottom VIEW eva vare Y OC 6 3 Network Analyzer with 8414A 6 5 Simplified RF Schematic Diagram 6 4 Polar Display 3 8 6 6 RF Schematic Diagram 6 5 3 6 Transmission Measurement Using 6 7 Relay Driver Input Circuit Talking Network Analyzer with 8414A schematic Diagram 6 6 Polar Display UU 3 10 6 8 Relay Driver Assy Component 3 7 Measured Reflection Coefficient 3 12 Diagram ecw tear avers 6 7 3 Locus of Measured Reflection with 6 9 Relay Driver Assy Component Load 1s MOYed y u seu tees 3 12 Identification CR 6 8 3 9 Locus of Measured Reflection with 6 10 Switch Assy Component Identification 6 8 Directivity Cancelled 3
4. 0 8 95 uo SUN A9 lt SI LH 8980135 58381710 UL LY pue GUO usnoau H JUAN Jo 10 801 03040 THO 10 68 8 3 d0 J d11 ay 311 v NOLLO IA 38H NOI JL23143H 100 003 IVANVW Section Mode1 8743A If 2 30 2 20009 P280 ASSY HOLIMS ZY 0 8 Snoauvj nuns 32183303 pue 198118 UT 5109 OYL 2 0 rr u 02300 AOT J 087153 JO 001739510 ay uodn spuad uorrsod I1 4L uorjoe SAVTAI 81 0 TH UL SAVTTH 2 01 300W 55 303 SHO1VNIWON3O 300W NO11211138 403 SYOIVYIWAN SY NMOHS ASSY V 539 110 30 BNO 9 Nid I X 011234638 NJ3VI 5301110 72 SNOLLIGNOD INIW3UNS IW 310N 3030 2 9 341914 335 S310N 0831503 Sursneo uo O pue 80 uo surny 9 3jonpuoo 330 302 St 90 pue sjonpuoo A9 lt u3tu sr 9 pue cy 0 3ndur ayy orneureuog 23017187 0 1776 v o 8 9 Ind Af O 9Q ST LH 88070 9dej oA run SNVH 0 Yms Jt Tay ur st ayy 9 7 St LY 8901508 538716 Hun TATAY 0 THM ur Sr ea y JI uo Buryo Ms
5. 3 6 Mode1 8743A CALIBRATION DESCRIPTION Calibration consists of adjusting the 8743A REFERENCE PLANE EXTENSION to obtain equal reference and test channel electrical lengths and obtaining reference magnitude and phase indications PROCEDURE 1 Connect equipment as shown in setup Con nect a 10 dB attenuator such as the HP 8492A Option 10 to the HP 11605A Flexible Arm see Paragraph 3 17 and connect the attenuator to the 8743A UNKNOWN port De couple and dc balance the oscilloscope vertical amplifiers Adjust the oscilloscope to display the swept phase output from the 8413 Obtain equalreference andtest channel elec trical lengths by adjusting the REFERENCE PLANE EXTENSION for a horizontal phase display on the oscilloscope If the digital counter is to be used to determine the elec trical length of the device under test it should be set to zero A convenient way to do this is as follows a Adjust REFERENCE PLANE EXTEN SION crank until counter reads all zeros b Holdthumbwheel to retain zero indication and readjust REFERENCE PLANE EX TENSION for a horizontal display on the oscilloscope For swept frequency measurements adjust the oscilloscope display as follows a Disconnect oscilloscope vertical input from 8413A AMPLITUDE channel to sim ulate zero volts dc from 8413A Note trace position b Reconnect vertical input andadjust 8410A test channel gain and amplitude vernier controls so
6. b Holdthumbwheelto retain zero indication and readjust REFERENCE PLANE EX TENSIONto collapsethetraceto a dot or smallest cluster Adjust the 8410A phase and amplitude con trols to place the dot or cluster for a refer ence indication of 1 0 MEASUREMENT i Insert the device to be tested between the UNKNOWN port and the 10 dB attenuator Note the 8410A test channel gain setting This is the calibratedgain setting Adjust the test channel gain controls to locate the CRT dis play on the outside ring The difference in test channel gain settings is the magnitude of the transmission gain loss of the de vice under test To determine the electrical length of the de vice under test perform the following a Adjustthe REFERENCE PLANE EXTEN SION to again collapse the tracetoa dot or smallest cluster b The electrical length of the device under test is two times the digital counter reading 3 11 Section III REFLECTION COEFFICIENT VECTOR OF DEVICE UNDER TEST OR SLIDING LOAD DIRECTIVITY VECTOR Measured Reflection Coefficient Figure 3 7 3 13 INCREASED ACCURACY FOR REFLECTION MEASUREMENTS BY MINIMIZING DIRECTIVITY ERRORS 3 14 The 8743A internal coupler s directivity errors become significant when measuring small reflection co efficients but the error can cancelled at single fre quencies The measured reflection is the vector sum of the directivity vector plus the reflection
7. 19ALIp ay Butqaaad A9 01 A JO 39308 y usinoxu sassed LY 89801538 838110 yun uo pay st 9 9 10 10 81510837 Surjonpuoo 1017 33 70 7740 85 INI SV 1 011739110 UT 8108 1 04 se 3urjoe Way 8 1 A 96 cb sayeanjes ySnoryy youqpaeg spy NAOHS 313 9800 38Y SIN3NOqWO HIHLO 40 SNOULYMOISIG tv 88031 dO 983551 530012 Ni NOI1YH26530 31304 31 38198 aay 5311903557 GUNITLNG HOILY NDI 3Q 3398383438 gt 0 67 M 1100 8 ne 0612 60 A I i 4 12995 1 SNVUL I P i 1 3100319 i 197195 e it 310 3 0 I 0 I 2 0t Ap2 EIX 0 200 S81 PON i 4 150440 y ayy usnoau MOT 0 511235 90 PUL JJ0 3n2 ST GY MOT st 9 pue mdur 11311 5 Jjo M are pue ZO 3urjonpuoo FY U3QA u011934Tp auo ur 81105 e ox uSnoau 03 jua mno Sursneo pue uo suan LO uo surnj 2urjonpuoo 1341801 AV ISPH 5 83 08 01 30 1 2000
8. FLM 5 11K OHM 1 gt VAR WW 1K OHM 10 LIN 1 2W An SWITCH ASSY DIODE SILICON 100WV 100MA DIODE SILICON 100WV 100MA LAMP INCANDESCENT 28V 0 05A LAMP INCANDESCENT 28V 0 04A TRANSISTOR SILICON NPN TRANSISTOR SILICON NPN R FXD MET FLM 5 11K OHM 1 1 8W R FXD FLM 42 2K OHM 1 1 8W R FXD MET FLM 5 11K OHM 1 1 8W R FXD MET FLM 5 11K OHM i 1 8W R FXD MET FLM 42 2K OHM 15 1 8W R FXD MET FLM 5 11K OHM 1 1 8W R FXD MET FLM 51 1 OHM 1 1 2W NOT SEPARATELY REPLACEABLE NOT SEPARATELY REPLACEABLE RELAY DRIVER ASSY C FXD CER 0 1 UF 80 20 50VDCW 100MA 100MA 100MA 100MA 100MA 100WV 100 100 100WV 110 DIODE SILICON DIODE SILICON DIODE SILICON DIODE SILICON DIODE SILICON 100MA 100MA 100MA 100MA 100MA 100WV 100WV 100WV LQQWV 100WV SILICON DIODE SILICON DIODE SILICON DIODE SILICON DIODE SILICON DIODE See introduction to this section for ordering information Model 8743 A Section V Table5 1 Reference Designation Index Cont Reference die 1902 0551 ASCRII DIODE BREAKDOWN 6 19 5 A3Q1 1854 0039 TRANSISTOR SILICON 2N3053 302 1854 0039 TRANSISTOR SILICON 2N3053 A3Q3 1853 0012 TRANSISTOR SILICON PNP A3Q4 1853 0012 TRANSISTOR SILICON PNP A3Q5 1854 0071 TRANSISTOR SILICON NPN 506 1853 0020 TRANSISTOR SILICON PNP 507 1855 0020 TRANSISTOR SILICON PNP 08 1854 0071 TRANSISTOR SILICON NPN
9. 1400 FOUNTAIN GROVE PARKWAY SANTA ROSA CALIFORNIA 95404 U S A Page 6 of 7 8743A H23 HEWLETT ACKARD RFINPUT 1 UNKNOWN TRANSMISSION RETURN 08746 20031 lt 3 Ta EXTERNAL WIP LINE 3 2 SECTION Ca REFERENCE ES W2J1 A8 1008 REAR PANEL wast 4 LINE STRETCHER ATYEHUATON CE 2 REAR PANEL 18743 60008 1 W4 7 A4J2 8 I 1 W2P1 gt ull T TO poo REAR PANELI a REFERENCE Bb DC DIRECTIONAL COUPLER A101 REFERENCE PLANE 8 5080 0299 EXTENSION 01 70 48 PROGRAMMABLE ATTENUATOR DIRECTIONAL COUPLER 5080 0288 OCW 40C W102 NE 0 1048 ATTENUATOR 0 DC AS SWITCH TREE 5080 0290 08743 20040 uu W6 W6P2 ASI 9 T E pum ITRANS Lu Wat W9 W9P1 AMI 2A I ag i xl FIGURE 3 8743 23 RF SCHEMATIC DIAGRAM 1 560150SR 1400 FOUNTAIN GROVE PARKWAY SANTA ROSA CALIFORNIA 95404 U S A 1 al Page of 7 8743A H23 HEWLETT Mp PACKARD RELAY actuator J CALCULATOR HP 9820A OR HP COMMON FROM JI PIN 36 REAR PANEL 8743A H23 s aaa FROM 25 70
10. 383338 IVd dP 0 15 WO 0143 INI 30 311008 3 108 NO1123S 71 H19N3J1 0 3X14 TVNO111G00V 128 oNOISS IWSNV41 o 34 6 4 Section VI Model 8743A weIsvig FY 70 9 d4M TELM Idem 2 149 TZM 9 1484 2 14484 0 IOM SM 230 ASS 5 6M Ide 0 01009 66180 ASSY 38 1304 NANGA NOISSIWSNV1 V SNO HYN91S3Q 394333333 gU i l pp 60009 P280 120 014 8314002 IIM m 8 001 00311 89 01 1 0 E 60009 97280 ASSY 38 1804 249 9M 11009 62180 ASSY 3 140d 0 SV NOISN31X1 3NV d 3038434384 Q 5 3001303171 _ oe lav L 700 SM IdM ZY __ __ _ J 80009 52281 cM 7 0100008 gP OI 8 13 9 TINYd IM gic Is 3 394333335 Lo 035 31X3 1 8 M NYA YYW Nun 138 NAONDINN d Loc es NE 38 a 6 5 Model 8743A Section VI 10 8160 Surx e1 Pdu 19A11 191115 JiOW 1331 UO 95 66 suan A gt MOT 51 LY 5
11. Medical Only Technomed Heilas Ltd 52 Skoufa Street Athens 135 Tei 3626 972 HUNGARY MTA M szer gy s M r stechnikai Szoigalata Hewlett Packard Service Lenin Kr 67 P O Box 241 13918Budapest Vi Tei 42 03 38 Telex 22 51 14 ICELAND Medical Only Elding Trading Company Inc Hafnarnvoli Tryggvag tu P O Box 895 IS Reykjavik Tel 1 58 20 1 63 03 Cable ELDING Reykjavik IRAN Hewlett Packard Iran Ltd No 13 Fourteenth St Mir Emad Avenue PO Box 412419 Tehran Tel 851082 5 Telex 213405 hewp IRELAND Hewiett Packard Ltd King Street Lane Winnersh Wokingham Berks 6 1 5AR GB England Tel 0734 1 78 47 74 Telex 847178 Cable Hewpie London Hewlett Packard Ltd 2C Industrial Estate Long Mie Road Dublin 12 Ere Tel 01 514322 Teiex 30439 Medical Only Cardiac Services Ireland Ltd Kilmore Road Artane Dublin 5 Tel 9 Medical Only Cardiac Services Co 95 Rd South Belfast Tio OBY G8 Northern Ireland ILLINOIS 5201 Toliview Or Rolling Meadows 60008 Tel 312 255 9800 TWX 910 687 2260 INDIANA 7301 North Shadeland Ave indianapolis46250 Tei 3171 842 1000 TWX 810 260 1797 IOWA 2415 Heinz Road lowa City 52240 Tel 819 338 9466 KENTUCKY Medica 3901 Atkinson Or Suite 407 Atkinson Square Louisville 40218 Tei 502 456 1573 LOUISIANA Box 1449 3229 39 Willlams Boulevard Kenner 70063 50
12. See Figure 3 11 for important information about use care of APC 7 connectors Figure 3 1 Front Panel Features Model 8743A Section III REAR PANEL FEATURES REMOTE INPUT REFERENCE and TEST output ports Refer enceand Test channeloutputs to phase ampli tude indicator Mate with APC 7 style 50 ohm precision 7mmconnectors The REFER ENCE channel connector is mechanically floating to assure alignment with 8411A Har monic Frequency Converter of HP 8410A Net work Analyzer REFERENCE LINE May be replaced with a longer section of rigid coax cable to extend the range of the REFERENCE PLANE EXTEN SION to any desired length RF INPUT Input for RF signal that is applied to the device under test Frequency range is 2 0 to 12 4 GHz Maximum RF power level is 2 watts Connector is 50 ohm type N and mates compatibly with type N connectors whose dimensions conform to MIL C 39012 and MIL C 7 see dimension drawing REMOTE INPUT Accepts contact closure type remote programming to select the func tion to be measured Nominal voltage from the 8743A when the contact is open is 12 Vdc Maximum current from the 8743A when the contact is short circuited is 12 mA Power Cable Connector NEMA type with offset pin connected to 8743A cabinet Power Amphenol RF Division Danbury Connecticut 0 3 6 0 320 MAX 0 063 0 066 SE Tan VYA 5 MAX requirements
13. international Aeradio E Ltd PO Box 861 Dar es Salaam Tei 21251 Ext 265 Teiex 41030 THAILAND UNIMESA Co Ltd Eicom Research Building 2538 Sukumvit Ave Bangchak Bangkok Tel 2932387 3930338 Cadie UNIMESA Bangkok UGANDA Medical Only Ltd P 0 Box 2577 au Tel 54388 Cable INTAERIO Kampala ZAMBIA RJ LU Box 279 Lusaka Tel 73793 ARJAYTEE Lusaka OTHER AREAS NOT LISTED CONTACT Hewlett Packard Intercontinental 3200 Hillview Ave Palo Alto California 94304 Tei 4151856 1501 TWX 910 373 1267 Cable HEWPACK Alto Telex 034 8300 034 8493 CANADA ALBERTA Hewlett Packard Canada i Ltd 11620 168th Street Edmonton TSM 379 Tel 14031 452 3670 TWX 610 831 2431 Hewlett Packard Canada Ltd 210 7220 Fisner St S Calgary T2H 2HB Tel 4033 253 2713 Twx 6 0 82 5141 BRITISH COLUMBIA Hewlett Packard Canada Ltd 10681 Shelibriage Way Richmond VX 2W7 Tel 6041 270 2277 TWX 610 925 5059 MANITOBA Hewieti Packard Ltd 380 550 Century St Winni eg OY1 Tel 2041 786 6701 TWX 610 671 3531 NOVA SCOTIA Canac2 wid 800 Road Dartmouth 111 Tei 902 469 7820 TWX 610 271 4482 ONTARIO Hewlett Packard Canadas Ltd 1020 Dr Ottawa K2H 7 1513 820 5453 TWX 610 563 1636 Hewlett Packard Canada itd 687 Goreway Drive Mississauga L4V IMB Te i415 6
14. 10 mV degree and the oscillo scope vertical calibration to determine 4 phase angle For single frequency measurements read magnitude and phase as follows a For magnitude note 8410A test channel gain settings Increase test channel gain to return the 8413A meter indication to zero The difference in test channel gain settings is the reflection magnitude in re turn loss b For phase adjust the 8413A phase offset for an on scale meter indication on the most sensitive scale The phase angle is the algebraic sum of phase offset and meter indication 1 ip Log 05 x Return Loss Figure 3 3 Reflection Measurement Using Network Analyzer with 8413A Display Unit Sheet 2 of 2 3 5 Section III Model 8743A TRANSMISSION MEASUREMENT SIGNAL SOURCE 0 12 4 GHz NETWORK ANALYZER idco dol NN NE 84 0 SWEEP REFERENCE q Q Z e ose ENSE JEC OUT 2555255 c SWEEP PHASE OUT OUT 2 8411 OSCILLOSCOPE HSV HP TEE M aset i Q HORIZ IN Meg 47OK E 00 E 2 4 UNKNOWN neum p RETURN PORT IO dB ATTENUATOR lt 8492A OPTION 0 1605 FLEXIBLE ARM Figure 3 4 Transmission Measurement Using Network Analyzer with 8413A Display Unit Sheet 1 of 2
15. A3Q9 1854 0071 TRANSISTOR SILICON NPN ASRI 0698 3408 R FXD MET FLM 2 15K OHM 1 1 2W A3R2 0698 3408 R FXD FLM 2 15K OHM 1 1 2W A3R3 0757 0199 R FXD FLM 21 5K OHM 1 1 8W A3R4 0757 0443 R FXD FLM 11 0K OHM 1 1 8W A3R5 0698 0084 R FXD MET FLM 2 15K OHM 1 1 8W A3R6 0757 0442 R FXD MET FLM 10 0K OHM 1 1 8W A3R7 0698 0084 R FXD MET FLM 2 15K OHM 1 1 8W A3R8 0757 0442 R FXD FLM 10 0K OHM 1 1 8W A3R9 0698 3136 R FXD MET FLM 17 8K OHM 1 1 8W 5 10 0757 0290 R FXD MET 6 19K OHM 1 1 84 A3R11 0757 0442 R FXD MET FLM 10 0K OHM 1 5 12 0757 1078 MET FLM 1 57K OHM 1 1 2W A3R13 0698 3406 R FXD FLM 1 33K OHM 15 1 2W A3R14 0698 3406 R FXD FLM 1 33K OHM 1 A3R15 0757 0562 R FXD MET FLM 75K OHM 1 1 8W LINE STRETCHER ASSY 08751 60005 A5 08753 60011 RELAY ASSY UNKNOWN PORT A6 RELAY ASSY TEST PORT 08753 60009 A7 98743 60010 RELAY 55 TRANSMISSION RETURN PORT C FXD ELECT 1500 UF 50 60VDCW 0180 0198 DIRECTIONAL COUPLERCTEST DIRECTIONAL COUPLERCINPUT 08743 60005 08743 60004 2140 0244 LAMP GLOW 2110 0336 2110 0340 FUSE CARTRIDGE 1 2A 250V SLOW BLOWCLISVAC FUSE CARTRIDGE 0 25A SLOW BLOWC230VAC CONNECTOR FEMALE 36 PIN MINIATURE SOCKET 3 PINCAC POWER TRANSISTOR SILICON NPN 2N3054 1251 0085 1251 2357 1
16. Apanada A reo 6287 Bogota Tel 269 8877 Telex 64490 Cable AAR S Bogot 7 Langedaex amp Kier S A Carrera 63 No 49 A 31 0 8 Medellin 304475 COSTA RICA Cientifica Costarricense S A Avenida 2 Calig 5 San Pedro de Montes de Oca Apartado 10159 San Jose Tel 24 38 20 24 08 19 Telex 2367 GALGUR CR Cable GALGUR ECUADOR Computadoras y Equipos Electr nicos n Ecuador 6423 CCI Eloy Altaro No 1824 3 2 50 Quito Tel 453 482 Telex 2548 CYEDE ED Cable CYEDE Quito Medica Only Hospitalar 5 A Casilla 2590 Robles 625 Quito Tel 545 250 Cable MOSPITALAR Qz te EL SALVADOR IPESA Bulevar los Heroes San Satvador Tet 252787 GUATEMALA IPESA Avenida Reforma 3 48 Zona 9 Guatemala Cit Tel 316627 314786 6647 Telex 4192 Teletro Gu 1 5 ext 9 MEXICO Mexicana SA de Pent rico Sur 6501 Tepepan Xochrmilco Mexico 23 D F Tel 905 676 4600 Telex 0171 7 Mexicana SA Ave Consutuci n No 2184 Monterrey N L 48 71 32 48 71 84 Telex 038 410 NICARAGUA Roberto Ter n G Apartado Posta 689 Edificic Teran 25114 23412 23252 0 ROTERAN Managua Electronice Balboa 5 Apara ado 4929 Panama 5 Calle Samuei Lewis Edificio Alfa No 2 Cuidad de Panama Tet 64 2700 Telex 3483103 Curundu Canal Zone Cable ELECTRON Panama PERU
17. Tet 505 526 2484 TWX 910 9983 0550 POLANO Biuro Informacy Technicznej Hewlett Packard UI Stawki 2 00 950 Warszawa Tei 33 25 88 39 67 43 Telex 81 24 53 hepa p UNIPAN Biuro O5s ugi Technicznej 01 447 Warszawa Newelska 6 Foland Zakiady Naprawcze Sprzetu 10 Plac Komuny Paryskiej 6 90 007 Lodz 334 41 337 83 Telex 1 PORTUGAL Teiectta Empresa T cnica de Equipamentos Electricos Sar Rua Rodrigo Fonseca 103 PO Bor 2531 P Lisbon 1 19 65 60 72 Cable TELECTRA Lisbon Telex 12598 Medica only Mundinter Intercambio Mundial de Com rcio Sarl PO Box 1 Avenida Antonio Augusto de Aguar 138 P Lisbon Tel 19153 21 317 Telex 16691 munter Cable INTERCAMBIO Lisbon QATAR Nasser Trading 8 Contracting Box 1563 Doha Tel 22170 Teiex 4439 NASSER Cable NASSER RUMANIA Hewiett Packara Reprezentanta Balcescu 16 Bucuresti Tel 15 80 23 13 88 85 Telex 10440 LIRUC Intreprinderea Pentru ntreunerea 51 Repararea Utilayelor de Calcut B dui Prof Dimitrie Pompei 6 Bucuresti Sectoru 2 Te 88 20 70 88 24 40 88 67 95 Telex 118 SAUDI ARABIA Modern Electronic Establishment Head Office P Box 1228 Baghdadiah Street Jeddah Tel 27 798 Telex 40035 Cable ELECTA JEDDAH Moderr Electronic Establishment Branch 8 Riyadh Te 62595 65232 RAOUFCO Modern Electronic Establishment Branch PO Box 193 Al Khobar Tel
18. ber 72778 Norfoik 23522 604 467 0571 bos 9569 2976 mo gay 5 gs Road Richmond 23228 ZEB SM WASHINGTON ete D Pk 2635 04 hee S Bellevue 3K Po ES E TRAA Spokane 93222 7 WEST VIRGINIA ze brania LU Charleston Te 04 345 1540 WISCONSIN ev Linc Ave West Alis 55227 Te 541 0550 FOR U S AREAS NQT LIS Lontar Te regionai office Atlanta Georgia no y ooc California Maryland Roling Hinos Terr compete 20075256 are hSteG above Service Only K4XL s BAMA This manual is provided FREE OF CHARGE from the BoatAnchor Manual Archive as a service to the Boatanchor community It was uploaded by someone who wanted to help you repair and maintain your equipment lf you paid anyone other than BAMA for this manual you paid someone who is making a profit from the free labor of others without asking their permission You may pass on copies of this manual to anyone who needs it But do it without charge Thousands of files are available without charge from BAMA Visit us at http bama sbc edu
19. the 8743A REFERENCE PLANE EXTENSION to obtain equal reference and test channel electrical lengths and obtaining reference magnitude and phase indications PROCEDURE 1 Connect equipment as shown in setup 2 Connect a coaxial short such asthe HP11565A to the 8743A UNKNOWN port and depress the REFL pushbutton 3 Set the Sweep Oscillator to automatic sweep f Adjust the Sweep Oscillator and Network Analyzer controls to phase lock the Network Analyzer over the frequency band of interest 4 Push and hold the 8414A BEAM CTR push button and adjust the centering controls to place the dot in the center of the polar display 5 Obtain equal reference and test channel 1 trical lengths by adjusting the REFERENCE PLANE EXTENSION to collapse the trace to a dot or smallest cluster If the plane of measurement is to be extended beyond the plane of the short the digital counter should be set to zero so that it can be used to set the required extension accurately A convenient way to do this is as follows a Adjust REFERENCE PLANE EXTEN SION crank until counter reads all zeros b Holdthumbwheel to retain zero indication and readjust REFERENCE PLANE EX TENSION to collapse the trace toa dot or smallest cluster 1 Section III Adjust the 8410A PHASE VERNIER TEST CHANNEL GAIN and AMPL VERNIER con trols to place the dot or cluster for a refer ence indication of r 1 180 NOTE Calibration for greater accuracy is
20. 115 or 230 V ac 10 50 to 1000 Hz approximately 20 watts Power Line Fuse Holder Slo blo fuse rating for 115 and 230 Vac on adjacent plate Line Voltage Selector Permits operation from 115 or 230 Vac Number showing on Slider is the selected operating voltage Correct line fuse rating is on plate adjacent to fuse holder Serial Number Plate Eight digit serial num ber should be included inany correspondence concerning the 8743A Figure 3 2 Rear Panel Features 3 3 Section 3 4 REFLECTION MEASUREMENT SIGNAL SOURCE Mode1 8743A 20 12 4 GHz NETWORK ANALYZER Hr EIE acutus 8410A HP 8413A SWEEP REFERENCE e e e 9 pape des o 111 0 SWEEP SU OUT 8411 OSCILLOSOPE HPIBOA 1801A 1821 foy L HORIZ IN x I Meg 470K 10V 3 TT 5 9 PORT RETURN PORT W COAXIAL SHORT RF OUT fel e PHASE OUT Figure 3 3 Reflection Measurement Using Network Analyzer with 8413A Display Unit Sheet 1 of 2 Mode1 8743A CALIBRATION DESCRIPTION Calibration consists of adjusting the 8743A REFERENCE PLANE EXTENSION to obtain equal reference and test channel electrical lengths and obtaining reference magnitude and phase indications using a termination of known magnitude and phase angle PROCEDURE 1 2 Connect equipment as shown in setup Connect a co
21. 2 Figure 4 2 Insertion Loss Troubleshooting Sheet 3 of 4 RF TROUBLESHOOTING NOTE 3 If a cable s center conductor is not centered it may distort a switch s center conductor contact and cause an increase in insertion loss The increased insertion loss is most likely to occur from 11 to 12 4 GHz See Response Curve A NOTE 4 Although cable ends appear to be perfect they may still present a discontinuity Also trimming these cable ends requires special tools Therefore if you are unable to eliminate a discontinuity replace the suspected cable NOTE 5 Directional Coupler DC1 HP Part No 08743 60005 includes a tuned 10 dB attenuator If the troubleshooting procedure step 3 indicates a trouble in DC1 the problem could be the 10 dB attenuator Check the coupler directivity using the Operating and Service Manual Performance Test Procedure If the directivity is OK the trouble is most likely the 10 dB attenuator The attenuator may be replaced using the following procedure CAUTION Do not unscrew flat head screws or brass attenuator housing connector If the brass parts move directivity may be degraded Using a 1 2 inch open end wrench hold the brass attenuator housing connector to keep it from rotating Using plastic jawed or padded vise grip pliers unscrew the round stainless steel part not the part with the flats 2 Remove attenuator cartridge Do not remove gold plated cent
22. 244 1361 2424 East Aragon Rd Tucson 85706 Tei 602 886 4661 ARKANSAS Medical Service Only PO Box 5646 Brady Station Little Rock 72215 501 375 1844 CALIFORNIA 1579 W Shaw Ave Fresno 93771 Tel 209 224 0582 1430 East Orangethorpe Ave Fullerion 2631 Tet 714 870 1000 3939 Lankershim Boulevard North Hollywood 91604 Tel Q13 82 8 TWX 996 499 2671 5400 West Rosecrans Blvd PO Box 92105 World Way Postal Center Los Angeles 90009 Tel 213 776 7500 TWX 910 325 6608 Los Angeles 133 776 7500 3003 Scott Boutevard Santa Clara 95050 Tet 6408 988 7000 Ridgecrest Tel 714 446 6165 646 W North Market Blvd Sacramento 95834 Tel 816 929 7222 FINLAND Hewlett Packard OY Nahkahousunti 5 Box 6 5 00211 Helsinki 1 Tel 90 6923031 FRANCE Hewlett Packard France Avenue des Tropiques Les Ulis Boite Postale No 6 91461 Orsay Cedex Tel 111907 78 25 TWX 600048F Hewlett Packard France Chemin des Mouilles 162 89130 Ecuily Tel 78133 81 25 TWX 7 Hewiett Packara France de la C pi re 31081 Toulouse Le Te 61 40 11 12 TWX 510957F Hewlett Packard France Le Ligoures Bureau de vente de Marseilles Place Rou e de Villenueve 13100 Aix en Provence Tel 142 59 41 02 Hewlett Packard France 2 Allee de 800 35100 Rennes 99151 42 44 TWX 740812F Hewlett Packard France iB rue du Canal de la Marne 67300
23. 44678 44813 SPAIN Hewiett Packaro Espa ola 5 A Calie Jerez 3 E Madrid 16 Tel 1 458 26 00 10 lines i Telex 23515 Hewiett Packard Espadfola 5 A Colonia Mirasierra Edificio Juban o Costa Brava 13 Madrid 34 Hewiett Packard Espanola 5 M lanesado 21 23 Barcelona 17 Tei 3 203 6200 5 inesi NEW YORK 6 Automation Lane Compute Park Albany 12205 516 458 1550 TWX 710 444 4961 650 Perinton Hui Office Park Fairport 14450 716 223 9950 TWX 510 253 0092 No 1 Pennsylvania Plaza S5th tioor 3 tr street Btn Avenue New York 10001 Te 212 971 0800 5856 East Molloy Road Syracuse 13211 315 485 2486 1 Crossways Park West Woodbury 11797 516 921 0 NORTH CAROLINA 5605 Roanne Way Greensboro 27405 Tel 18 852 180 OHIO Computer Only 8 45 300 5313 Ra Cincinnati 55425 Te 1522 367 00 1250 5246 0 Cleveland 22730 Te 208 223 7393 WX ESC 33C Progress Dayton 45449 Te i513 858 5202 104 Kiagsmi Parkway Coiumbus 43229 Tet 614 1436 1041 OKLAHOMA Box 32008 6301 N Mengan Avenue Oklahoma City 73112 405 721 0200 9920 E 42nc Street Suite 121 Tuisa 74145 Hewiett Packard Espanola S Av Ram n y Cajal 1 Edificio Sevilla planta 9 Seville Tel 64 44 54 58 Hewiett Packard Espa ola S A Edificic Alhia E Bilbao 1 Tet 23 83 06 23 82 06 Espa ola S A C a or
24. 8410A Network Analyzer It contains microwave circuits for making reflection and transmission mea surements from 2 0 to 12 4 GHz The RF circuit for a transmission or a reflection measurement is set up by a front panel pushbutton or with remote contact closures 1 3 A calibrated internal line stretcher with a high resolution digital indicator compensates for the elec trical length of the device under test up to 15 cm for reflection tests and up to 30 cm for transmission tests If more compensation is needed additional line may be installed in place of the removable rigid coax link on the rear panel 1 4 As shown in Figure 6 5 both the reference and test channels are isolated from the signal source by 20 dB In addition to padding source mismatch the attenuation in the test channel permits measurements on small signal devices Table 1 1 1 5 ACCESSORIES FURNISHED 1 6 A rack mounting kit a male 36 pin connector HP part number 1251 0084 and a detachable power cable are furnished with the Model 8743A 1 7 RACK MOUNTING KIT 1 8 The rack mounting kit contains all the hardware needed to adapt the Model 8743A cabinet for instal lation in equipment racks with standard 19 inch spacing Instructions for conversion to rack mounting are included with the kit 1 9 THIRTY SIX PIN MALE CONNECTOR 1 10 The 36 pin male connector mates withthe rear panel REMOTE INPUT connector and permits all necessary remote programming c
25. Eto E Valencia 10 Tel 95 361 13 94 361 13 58 SWEDEN Sverige Enignets agen 3 5 16 Bromma 29 Tel 08 730 05 50 Telex 10721 Cable MEASUREMENTS Stockhorm Hewiett Packard Sverige 30 S 421 32 Vastra Frolunda 031 49 09 50 Telex 10721 via Bromma office SWITZERLAND Hewlett Packarc Scnweiz Zurcherstrasse 20 307 CH 8952 Schlieren Zurich Tel 10117305240 Telex 53833 hpag ch Cable HPAG CH Hewlett Packard Schweiz AG Chateau Bloc 19 CH 1219 Le Lignon Geneva 022 96 03 22 Telex 27333 h ap ch Cabie HEWPACK G Geneva SYRIA Genera Electronic Inc Nur Basha Ahna Kays Street PO Box 5781 Damascus Tei 33 24 87 Telex 11215 ITIKAL Cable ELECTROBOR DAMASCUS Medica Persona Calculator only Sawah amp Co Place Azm BP 2308 Damascus Tel 16 367 19 697 14 268 Suleiman Hilal i Mlaw PO Box 2528 Mamoun Bitar Street 56 58 DamascusTel 11 46 63 TUNISIA Tunisie Electronique 31 Avenue de la Liberte Tunis Tel 280 144 Corema 1ter de Carthage Tunis Tel 253 821 Telex 12219 TN TURKEY TEKNIM Company Ltd Riza Sah Penievi Cates No 7 Kavakidere Ankara 275800 Telex 42155 Com itd Barbaros Bu vari 55 12 Besikyas Istanbul Tei 613 546 23540 Medical only EMA Kollekut Sirxeti Mediha Eiden Sokak 41 Yuksel Cadces Ankara Tel 17 56 2
26. HP and certain other products designated by HP will be performed at Buyer s facility at no charge within the HP service travel area Outside HP service travel areas warranty service will be performed at Buyer s facility only upon prior agreement Buyer shall pay HP s round trip travel expenses For products returned to HP for warranty service 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 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 out side of the environmental specifications for the product or improper site preparation or maintenance 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 THEOR Y ASSISTANCE Product maintenance agreements and other customer assistance agreements are available for Hewlett Packard products For any assistance con
27. Ltd Lygan Court Herewatd Rise 0 Road Halesowen West Midlands B62 BSO Tet 6 9911 Telex 339105 Hewirtt Packard Ltd Wr gt House 799 Landon Road Thornton Heath Sutry GXL Tel 663 Telex 946825 Hewirrl Packard Ltd 10 Wesley St Caatietord York Tel 550016 Telex 557255 3 110 1 Wallace Way Hitchin Hertturdshire 564 CSE Tel E Telex 59 81 USSR Packard Representative Office USSR 7010 Boulevard 4 17 kw Moscow 101000 Tel 294 20 24 Telex 7825 Su YUGOSLAVIA Iskta Standard Mewiett Packarc Mikiosceva 38 6 Ljubljana Tet Fi 58 79 32 16 74 SOCIALIST COUNTRIES NOT SHOWN PLEASE CONTACT Hewiet Ges m b 52 PO Kus 7 A 177 Vienna Austria 60222135 16 21 27 MEDITERRANEAN MIDOLE EAST COUNTRIE NOT SHOWN PLEASE CO Hewlett 3 SA fAediterranear aig Middle Eas 5 35 Street Plata V elaliariou DR Kita Athens Greece Te 6960337 256 429 FOR OTHER AREAS NOT LISTED CONTACT Pzckare S 7 tye du Bois Cu Lan PG Er CH 7 7 Meyor 2 Geneva Swi E Te 522 82 76 00 PG tes 42616 OLS Hawi OF Houston 77036 011 7764400 Lubbock Medica Sew ce only e EF 7954172 20 By Mice Road San Antonio 6 Te Vt AER UTAH 2166 Soutr 3272 West Stree Lake City 65119 Te EL 372 477 VIRGINA ZA
28. NPN negative positive S B slow blow hertz negative 5 NRFR not recommended for R ES intermediate freq t SE selenium impregnated ed 2 SECT section s incandescent SEMICON semiconductor include s replaceable SI silicon A 8 OBD order by description 2 Te OH oval head SPG nri OX oxide kilo 1000 SPL special _ SST stainless steel left hand A SR split ring linear taper PC printed circuit 12 STL x lock washer PF picofarads 10 logarithmic taper taradi m low nass filter PH BRZ phosphor bronze TD time delay P PHL Phillips TGL toggle milli 1073 PIV peak inverse voltage THD thread 106 PNP positive negative TI titanium positive TOL tolerance meral S part of TRIM trimmer metallic oxide POLY polystyrene TWT traveling wave tube manufacturer PORC porcelain mega hertz U micro 10 6 miniature POS position s potentiometer VAR variable peak to peak VDCW dc working volts mounting 5 mylar PT 3 r 1 W with PWV peak working voltage w gt nano 1079 RECT rectifier WIV working inverse normally closed RF radio frequency voltage neon RH round head or ww wirewound nickel plate right hand W O without 5 1 Section V A1 A1C1 A1C2 A1CR1 A1CR2 A1CR3 1 5 A1Q1 A1Q2 A1Q3
29. Network Analyzer amplitude vernier control to place the oscilloscope dot at one peak of the grease pencil trace Note the 8413A meter indication Place the dot at the other peak and again note the 8413A meter indication The dB dif ference between the two meter indica tions is the peak to peak amplitude of Frequency of Maximum Equivalent Source Reflection The maximum peak to peak amplitude must not exceed 1 59 dB VSWR lt 1 2 from 2 to 8 GHz or 2 29 dB VSWR lt 1 3 from 8 to 12 4 GHz VSWR antilog 0 05 peak to peak amplitude in dB NOTE This procedure determines the equivalent Source reflection for the frequency at which the maximum peak to peak ampli tude occurs To determine the equivalent Source reflection at other frequencies repeat steps b through i for other relative phase relations of the load directivity and source reflection vectors i e offset the coaxial short using various lengths of air lines j Repeat steps b through i for other frequency bands to cover the range of 2 0 to 12 4 GHz Figure 4 1 Performance Test Sheet 4 of 4 4 5 4 6 Unsolder the white and green wires which come through the deck from the A5 Assembly Remove the six coaxial switch mounting screws accessible from the bottom of the in strument Remove the A5 and 7 Assemblies from the instrument as one unit Disconnect the switch to be replaced and unsolder the appropriate white and green wires Ma
30. New Haven 06525 Tet 2031 389 6551 TWX 710 465 2029 FLORIDA Box 24210 2727 N W 62nd Street Ft Lauderdale 33309 Tei 305 972 2600 4428 Emerson Street Unit 103 Jacksonville 32207 Te 9041 725 6333 PO Box 13910 6177 Lake Elienor Dr Orlando 32809 305 859 2900 P 0 12826 Sune 5 Bidg 1 Ofice Park North Pensacola 32575 Te 904 476 8422 GEORGIA Box 105005 450 Interstate North Parkway Atlanta 30348 404 955 1500 Medica Service Only Augusta 30903 Tel 404 736 0592 P O Box 2103 1172 N Davis Drive Warner Robins 31098 Tel 912 922 0449 HAWAII 2875 So King Street Honolutu 96826 Tel 808 955 4455 HEWPACKSA Hamburg Telex 21 63 032 hphh d Hewiett Packard GmbH Technisches B ro Hannover Am Grossmarkt 5 D 3000 Hannover 91 Tel 0511 46 50 01 Telex 092 3259 Hewlett Packard GmbH Technisches 8016 N rnberg Neumeyerstrasse 90 D amp CO0Nurnberg Tel 0911 56 30 83 Telex 0623 860 GmbH Technisches Buro Munchen Eschenstrasse 5 D 8021 Tautkirchen Tel 089 6117 1 Hewlett Packard Technisches B ro Berlin Kaithstrasse 2 4 D 1000 Berlin 30 Tel 030 24 90 86 Telex 018 3405 hpbin d GREECE Kostas Karayann s B Street Athens 133 Tel 32 30 30332 37 731 Analytical Only INTECO G Papathanassiou amp Co 17 Marn Street Athens 103 Tei 5522 1 989 Telex 21 5329 INTE GR Cable INTEKNIKA
31. Port Moresby Paupua Tel 258933 NEW ZEALAND Hewlett Packard N Z iLtd 4 12 Cruickshank Street Kilbirmie Wellington 3 PO Box 9443 Courtney Place Welington Tei 877 199 Cable HEWPACK Wellington Hewlett Packard N Z Ltd Pakuranga Professional Centre 267 Pakuranga Highway Box 51092 Pakuranga Tel 569 651 Cable HEWPACK Auckland Analytical Medical Only Medica Supnhes N Z Ltd Scientific Division 79 Carlton Gore Road Newmarket PO Box 1234 Auckland Tel 75 289 Cable DENTAL Auckland Analytical Medical Oniy Medica Supphes N Z Ltd Norne and Parumoana Streets Porirua Tel 75 098 Telex 3858 Analytical Medical Only Medica Supplies N Z itd PO Box 309 239 Stanmore Road Christchurch Tel 892 019 Cable DENTAL Christchurch Analyticai Medicai Onty Medica Supplies NZ Ltd 303 Great King Street PO Box 233 Dunedin 88 817 Cable DENTAL Dunedin NIGERIA The 9 instrumentations Ltd N68 770 Oyo Road Oluseun House PMB 5402 Ibadan Tel 461577 Telex 31231 NG Cabie THETIEL ibacan The Electronics Instrumenta tions Ltd 144 Agege Motor Roag Mushin PO Box 6645 Lagos Cable THETEIL Lagos PAKISTAN Mushko amp Company 110 Qosman Chambers Aboullah Haroon Road Karachi 3 Tel 511027 512927 Telex 2894 Cable COOPERATOR Karachi Mushko amp Company Ltd 388 Satelite Town Rawalpindi Tel 41924 Cable FEMUS 3 PHILIPPINES The Online Advanced Systems Corporatio
32. Schittigheim Tel 88 83 08 10 TWX 890141F Hewlett Packard France immeuble p ricentre Rue van Gogh 59650 Villeneuve D Ascq Tel 20 91 41 25 TWX 160124F Hewlett Packard France Bureau de Vente Centre d affaires Paris Nord Batiment Rue de la Commune de Paris B P 300 93153 Le Bianc Mesnil C dex Tel 011931 88 50 Hewiett Packard France Av du Pdt Kennedy 33700 Meriguac Tel 56197 22 69 Hewlett Packard France France Evry immeuble Lorraine Boilevard de France 91035 Evry Cedex Tel 077 96 60 Hewlett Packard France 60 Rue de Metz 97130 Jouy aux Arches Tel 8716945 32 GERMAN FEDERAL REPUBLIC Hewlett Packard GmbH Vertnebszentrale Franklurt Berner Strasse 117 Postfach 560 140 0 6000 Frankfurt 56 Tel 0611 50 041 Cable HEWPACKSA Frankfurt Telex 04 3249 npftm d Hewlett Packard GmbH Technisches Buro Boblingen Herrenberger Strasse 110 D 7030 Boblingen W rttemberg 0703 667 1 Cable HEWPACK Bobiingen Telex 07265739 bbn Hewlett Packard GmbH Technisches Buro Dusseldorf Emanuei Leutze Str 1 Seestern D 4000 Dusseidorf Tel 10211159711 Telex 08586 533 d Hewlett Packard GmbH Technisches B ro Hamburg Wendenstrasse 23 0 2000 Hamburg Tel 040124 13 93 9606 Aero Drive Box 23333 San Diego 92123 714 279 3200 Tarzana Tel 213 705 3344 COLORADO 5600 Parkway Englewood 80110 Tel 303 771 3455 CONNECTICUT 12 Lunar Drive
33. Service Man ual will include more detailed maintenance information If repair of the Model 8743A is necessary before the complete manual is received contact the nearest Hewlett Packard office for instructions HP office locations are listed in the back pages of this manual 4 3 COMPLETE OPERATING AND SERVICE MANUAL 4 4 To obtain a copy of the complete Operating and Service Manual when it is available fill out and re turn the mailing card inside the front cover of this manual 1f this mailing card is not filled out and r turned the complete Operating and Service Manu will not be sent 4 5 PERFORMANCE TEST PROCEDURES 4 6 The performance test procedures presented Figure 4 1 are useful for incoming inspection and iodic evaluation and after repair The specificatior of Table 1 1 are the performance standards Te equipment required for the procedures is listed Table 4 1 Instruments other than those recommende may be used provided their performance equals c exceeds the critical specifications listed in the table Table 4 1 Recommended Test Equipment for Performance Test Procedure Critical Specifications Recommended HP Model Sweep Oscillator Power Variation 7 dB VSWR lt 3 1 Frequency Range 2 0 to 12 4 GHz Output Power 1 mW minimum into 50 ohm 8690A B 8692A B 2 to 4 GHz 8690A B 8693A B 4 to 8 GHz 8690A B 8694A B 8 to 12 4 GHz Network Analyzer No substitute may be used 8410 841
34. The vector subtraction must be done manually with the 8413A Put the sliding load on the 8743A and measure reflection phase and magnitude for three positions of the sliding load Plot these three points on graph paper and find the center of the circle that goes through these points The vector fromthe orginof the graphto this center must be vec torically subtracted from any reflection measurement at this frequency 3 12 Model 8743A LOCUS Figure 3 8 Locus of Measured Reflection when Load is Moved LOCUS Figure 3 9 Locus of Measured Reflection with Directivity Cancelled 3 16 INCREASED ACCURACY FOR TRANSMISSION MEASUREMENTS BY REDUCING MISMATCH AMBIGUITY 3 17 50 ohm coaxial attenuator is recommended for transmission measurements An attenuator con nected between the output of the device under test and the HP 11605A Flexible Arm reduces the ambiguity due to mismatch between the 11605A 8743A 8411 A10 dB low reflection attenuator such as a HP 8492A Option 10 reduces this ambiguity to essentially that due to the mismatch of the attenuator VSWR lt 1 25 Other values of attenuation may be used however values greater than 10 dB will not reduce the mis match below that of the attenuator For values less than 10 dB the multiple mismatch between the 11605A 8743A and 8411A should be taken into consideration In addition to reducing ambiguity due to mismatch the 10 dB attenuator makes the test channel powe
35. between sweep pause at the start frequency enables the Network Analyzer to phase lock solidly before a sweep begins 1 23 INSTRUMENTS COVERED BY MANUAL 1 24 Each Model 8743A carries atwo section eight digit serial number 000 00000 The first three digits of the number area prefix The contents ofthis manual apply directly to the Model 8743A which has the same serial number prefix es as those listed after SERIALS PREFIXED the title page 1 25 Revisions requiredto adapt this manual to other serial number prefixes are given in a yellow sheet Manual Changes insert suppliedwiththe manual For information concerning serial number prefixes not listed on the title page or in insert contact the nearest Hewlett Packard office listedat the rear of this manual Model 8743A section II SECTION INSTALLATION 2 1 INCOMING INSPECTION 2 2 Inspect the instrument for Shipping damage as soon as it is unpacked Check that all accessories listed in Paragraph 1 7 have been included Check for broken knobs andconnectors inspect cabinet and panel Surfaces fordents and scratches If the instrument is damaged in any way or fails to operate properly no tify carrier and your nearest Hewlett Packard Sales and Service Office For assistance of any kind includ ing instruments under warranty contact the nearest Hewlett Packard Sales Office listed at the back of this manual 2 3 REPACKAGING FOR SHIPMENT 2 4 USING ORIGI
36. dB ATTENUATOR A101 33321 03 FIGURE 4 ATTENUATOR CONTROL SCHEMATIC ATTENUATOR CARD ATTENUATOR CARD ATTENUATOR CARD bes Geemarc aw IO 20 PRINIED IN U S A 3509 07 1400 FOUNTAIN GROVE PARKWAY SANTA ROSA CALIFORNIA 95404 U S A SAFETY This product has been designed and tested according to International Safety Requirements To ensure safe operation and to keep the product safe the information cautions and warnings in this manual must be heeded Refer to Section I for general safety considerations applicable to this product 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 5 calibration facility and to the calibration facilities of other International Standards Organization members WARRANTY This Hewlett Packard 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 Company 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 However warranty service for products installed by
37. dis cussed in Paragraph 3 14 and 3 15 MEASUREMENT Remove the coaxial shortand connect the de vice to be testedto the 8743A UNKNOWN port Read the reflection coefficient magnitude and phase or impedance using a Smith Chart overlay from the 8414A display NOTE For small reflection coefficients the 8414A resolution can be improved by in creasing the 8410A test channel gain For example increasing the test channel gain by 20dBchanges the full scale reflection coefficient calibration from 1 0 to 0 1 at the outer circle The effective load plane of the device under test may be determined by adjusting the RE FERENCE PLANE EXTENSION to again col lapse the trace to a dot or smallest cluster The distance from reference plane to load plane may be read directlyfrom 8743A digital counter counter set to zero during calibration Figure 3 5 Reflection Measurement Using Network Analyzer with 8414A Polar Display Unit Sheet 2 of 2 3 9 Model 8743A Section TRANSMISSION MEASUREMENT NETWORK ANALYZER HP 8410A 8414A SIGNAL SOURCE 2 0 2 4 GHz HP 8690 SERIES 2 Goa Q Q 3 SWEEP REFERENCE e Ad 7 0 O ee 84 8743A A 2 UNKNOWN 7 TRANSMISSION 2 RETURN PORT PORT 10 dB ATTENUATOR P HP 8492A I 11605A OPTIO
38. model number and full serial number 2 10 PREPARATION FOR USE 2 11 POWER REQUIREMENTS 2 12 The Model 8743A requires a power source of 115 or 230 volts 410 50 to 1000 Hz single phase that can Supply approximately 20 watts 2 13 115 230 VOLT OPERATION 2 14 two position slide switch on the rear panel of the Model 8743A permits operation fromeither a 115 or 230 volt power source The number showing on the switch slider indicates the voltage for whichthe instru ment is connected The correct line fuse rating for each line voltage is markedon the plateadjacent to the fuse 2 15 Topreparethe Model 8743A for operation po sitionthe 115 230 volt switch sothat the number show ing on the slider corresponds tothe available line vol tage and installa line fuse of correct rating Slo blo fuses should be used CAUTION To avoid damage to the instrument set the 115 230 switch to the line voltage to be used before connecting the power cable 2 16 POWER CABLE 2 17 To protect operating personnel the National Electrical Manufacturers Association NEMA rec ommends that instrument panels and cabinets be grounded Accordingly the Model 8743A is equipped with a three conductor power cable which when plug ged into an appropriate receptacle grounds panel and cabinet The offset pin of the three prong connector is the grounding pin 2 18 To preserve the protection feature when op erating the Model 8743A from tw
39. nearly equalto its length in the reflection mode This means that since the difference is small it is possible to calibrate for one mode of operation and switch to the other without recalibrating 1 16 APC 7 SHORT 1 17 The Model 11565A APC 7 Short is useful for establishing reflection measurement phase and magnitude reference 1 18 COMPLEMENTARY EQUIPMENT 1 19 MODEL 8410A NETWORK ANALYZER 1 20 The 8410A Network Analyzer measures rela tive amplitude and phase of two RF input signals The instrument is capable of single or swept frequency 1 2 Model 8743A measurements in the range of 0 11 to12 4 GHz T wo plug in display units are available The 8413A plug in unit displays relative amplitude and phase data on a meter Phase and amplitude output signals allow display of swept signals on an oscilloscope or X Y recorder The 8414A plug in unit displays relative amplitude and phase data in polar coordinates on a 5 CRT for either swept or CW mode of measurement 1 21 SIGNAL SOURCE 1 22 HP 8690 Sweep Oscillator main frames with 8692B 8693B and 8694B RF plug in units provide swept frequency coverage ofthe entire 8743A frequency range These oscillators have features which make them especially compatible with the 8410A Network Analyzer system For example the sweep reference voltage output permits the 8410A phase lock system to track the fastest sweeps for flicker free oscilloscope displays Also the
40. panel lighted pushbuttons Remote by con tact closures or saturated transistors through 36 pin connector at rear panel Pin 17 to pins 18 or36 ground selects remote operation Opening or closing pin 24 to pins 18 or 36 selects Reflec tion or Transmission Pins 17 and 24 are at 12V and short to ground will draw 12 mA Accessories Furnished Rack mounting kit 36 pin male connector Power cable 1 1 Section I 1 11 ACCESSORIES AVAILABLE 1 12 FLEXIBLE ARM 1 13 The Model11605A Flexible Arm is a combina tion of three rotary air lines and three swivel joints It combines the phase stability of rigid line with the flexibility of cable so that devices with any port ge ometry can be connected to the 8743A 1 14 ATTENUATOR 1 15 50 ohm coaxial attenuator is recommended for transmission measurements An attenuator con nected between the output of the device under test and the HP11605A Flexible Arm reduces the ambiquity due to mismatch between the 11605A 8743A and 8411 10 dB low reflection attenuator such as a HP 8492A Option 10 reduces this ambiguity to essentially that of the attenuator VSWR lt 1 25 In addition to reducing error due to mismatch the 10 dB attenuator makes the test channel power level during calibration the same for transmission and reflection Also the combined electrical lengths of the 8492A and 11605A make the electrical length ofthe test channel in the transmission mode
41. wiping action of one connector across the other can damage the contact enough to cause a discontinuity The risk of this kind of damage can be minimized as stated in Figure 3 11 by always having the coupling sleeves of the UNKNOWN and TRANSMISSION RETURN connectors fully extended 3 23 CONTACT REPLACEMENT 3 24 Replacement inner conductor contacts are a vailable from Hewlett Packard part number 1250 0907 and from Amphenol RF Division Danbury Con necticut part number 131 129 3 13 Section Mode 8743A S RRO SSN RS SS SSRI AL INNER NS CONDUCTOR CONTACT HOLDER INNER a a ER Rg E SSX OUTER MAAN Ws Ss CONDUCTOR SSS SSS USE CARE id To Connect Keep contacting surfaces smooth and clean 1 Ononeconnector retract the coupling sleeve Irregularities and foreign particles can degrade by turning the coupling nut counterclockwise until the sleeve and nut disengage On the other connector fully extend the coup ling sleeve by turning the coupling nut clock wise To engage coupling sleeve and coupling nut when the sleeve is fully retracted press back lightly on the nut while turning it clockwise Push the connectors firmly together and thread the coupling nut of the connector with retracted Sleeve over the extended sleeve Leave the other coupling nut in the original position closing the gap betwe
42. 1 8413 8414A Oscilloscope Sensitivity 50 mV cm Bandwidth 5 MHz minimum Horizontal Sweep Rate 25 ms cm 140A 1405A 1422A or 180A 1801A 1821A and 141 1416 50 ohm short 7 connector 11565 50 ohm Coaxial Sliding Load connector SWR lt 1 05 Swept Slotted Line Impedance 50 ohm Residual VSWR lt 1 02 90 ohm coaxial sliding termination with APC 7 Output Connector APC 7 907A Frequency Range 2 0 12 4 GHz 817A 4 1 Section IV Mode1 8743A DIRECTIVITY TEST SIGNAL SOURCE 2 0 12 4 GHz HP 8690 SERIES Q Q Q 2 Llr 9 eee o c SWEEP OUT a rl OSCILLOSCOPE HP HORIZ IN 1 Meg 470K o PORT SWEEP REFERENCE HP 907A NETWORK ANALYZER HP 8410 HP 84I3A lE eo 6520255 AMPL OUT HP E E 8743A RETURN PORT SLIDING LOAD COAXIAL SHORT DEJ gg DESCRIPTION The accuracy of a reflection meas urement is affected primarily by the directivity of the coupler monitoring reflected signal This test measures the directivity of the directional coupler associated with the UNKNOWN port The test con sists of measuring the combination of coupler di rectivity and load reflection The load reflection is canceled and the resultant is directivity Tw
43. 12 6 11 Relay Driver Assy Schematic 3 10 Typical Transistor Remote 5 6 9 Control Circull 445 5 565554 3 13 6 12 Power Supply Component 3 11 APC T ConneetorS 499 dees 3 14 scores RR as 6 10 3 12 Pushbutton Selector 6 13 Power Supply Schematic Diagram 6 11 Bulb Replacement 3 15 1 Pushbutton Lamp Replacement 2 11 Section I 1 0 HA PH d cds RANSMISSION Fest 2 4 FUNC TiO on REFLECTION T 8743 st 8743A POWER CABLE 36 PIN CONNECTOR RACK MOUNTING KIT Figure 1 1 MODE L 8743A REFLEC TION TRANSMISS Model 8743A Model 8743A Number Title 1 1 Specifications ee 3 1 Contact Closures for Remote Opera LOD s 3 2 Signal Requirements for Remote Op ratiom tiny aa Table of Contents LIST OF TABLES Page Number Title 1 1 4 1 Recommended Test Equipment for Performance Test Procedure 3 13 3 13 5 1 Reference Designation Index ili Model 8743A section I SECTION I GENERAL INFORMATION 1 1 DESCRIPTION 1 2 The Model 8743A Reflection Transmission Test Unit is a complementary instrument for the HP
44. 1N3HOdWOD 0 10 SNOILYNOIS3Q INIY 35 JO 14 o 0 19355 5390712 I NOILYNUIS3Q 1104 Q31YIA3899Y 7 1 Q3NI1100 0 30 3283434328 0115 94 1400 lt 81 2 t 83 330383231 Isnt Qv i 33041 68 al 1 00 81 o 00 10 1231044 D INJNNfD 3583 31 639 ao 210 81 VX 10 01 70931 A2 0 gt 314419 Hs 01 07 4 0213 11 8 11 938 39 8 SIMI L310N 335 AZ OF 6 00 81 8318 as 0081 18 189 RM 10009 p280 ASSY 7 5 T 9 gy 3302 9 CYX 01 13305389 N3MV1 331116 2 SNO 3 3810 SILON 1 8381390 4012 9 3009113357 1 20 25 310N 2715 ASSV X11334 ON i 1 I I i i 10 1 30 12NJ8 138 2 posee a wee t 6 11 6 12 Model 8743A Appendix APPENDIX MANUAL CHANGES To adapt this manual to instruments with Serial Numbers listed in the table below make the indicated manual changes Information for adapting this manual to instruments with Serial Numbers not listed below may be included in a yellow MANUAL CHANGES insert supplied with this manual Information about Serial Numbers not covered in any of these ways can be obt
45. 2 EMATRADE Anxa a Analytica only Yilmaz Ozyurek Mur Mudafaa Ca 166 Kizilay OREGON 17890 SW Lower Boones Ferry road Tualatin 970262 Tei 503 620 3350 PENNSYLVANIA 111 Zeta Drive Pittsburgh 15238 Tei 1412 782 0409 1021 8 Avene King of Prussia industrial Parr King of Prussia 19406 Tel 0215 265 7009 TWX 510 660 2670 PUERTO RICO Hew gtt Packarc intey Ameizas Pyetc Rico Branch Office Calle 272 203 Urg Country Club Carolina 09924 Tel 508 762 7255 Terex 545 0514 SOUTH CAROLINA P Bex 6442 N 8 Columbia 29250 893 782 5553 TENNESSEE ES 4 One Knoxville 37922 nace Mernpnis 35131 9015 346 8370 Nashville Med za Service only Tei 615 244 5448 TEXAS 4171 North Mesa Sune C110 Ei Paso 79902 Tel 915 533 3555 P O 1270 201 E Arapaho Rd Richardson 75080 Tel 2141 231 6101 Ankara Tel 2502 09 17 80 25 42576 OZEK TR Came QZYUREK ANKARA UNITED ARAB EMIRATES Lid Office 1641 Shariah le 1541213 8 36 maac Ltd Branch Orice 2711 Ahu Dhabi Tel 11 UNITED KINGDOM Pacaare Ltd King Street Lane Winnersh Wokingham Berks 8611 5AR Tel 0734 784774 Tem 8471789 Hewietl Ltd Trateigar House Navigator Road Altrincham Chestite 190 Tel 0611928 6422 Telen 668068 Hewlett Packard
46. 4 443 6201 MARYLAND 7121 Standard Drive Parkway Industrial Center Hanover 21076 Tel 301 796 7700 TWX 710 862 1943 2 Choke Cherry Road Rockvilie 20850 301 946 6370 TWX 710 828 9684 MASSACHUSETTS 32 Hartwell Ave Lexington 02173 Tel 617 1 851 8960 TWX 710 326 6904 23855 Research Drive Farmington Hills 48024 Tei 313 476 6400 724 West Centre Ave Kalamazoo 49002 Tel 606 323 8362 ITALY Hewiett Packard Italiana Via G Di Vittorio 9 20063 Cernusco Sul Navigho Tet 21903591 Telex 311046 HEWPACKIT Hewlett Packard italiana S p A Via Turazza 14 35100 Padova Tel 149 664888 Telex 41512 Hewlett Packard Itahana G Armeni 10 1 00145 Roma Tel 06 54 69 61 Te ex 61574 Cable HEWPACKIT Roma riewiett Packaro S p Corso Giovanni Lanza 94 0 33 Torino 0111 682245 659308 Medical Calculators Only Hewlett Packard Italtana S p A Via Principe Nicola 43 G 1 95126 Catania Tel 095 37 05 04 Hewlett Packard italiana S p A Via Nuova San Rocco A Capodimonte 62 1 89131 Napoli Tel 08117913544 Hewlett Packard italiana 5 p A Via E Masi 96 1 40137 Bologna Tel 051 307887 300040 JORDAN Mouasher Cousins Co P O Box 1387 Amman Tel 24907 39907 Telex SABCO JO 1456 Cable MOUASHERCO KUWAIT Ai Khaldyya Trading 8 Contractin P 0 Box 830 Satat Kuwait Tel 42 4910 41 1726 L
47. 50498 5380110 Ou u do st 9312 152npuoo 0 3 If JO 96 81 o pg 80110 NOISSINSNVUL 00 0 st jaued juosy enueur snyy u do st GHO pue ou sey md mo dolJj diljJ ay uorounf GHD IU QUA AI 10066 uonounf GUD pue 135 0 252 IP JO9 gy I Sun ous 0 117180 X LONWHH 198 1 NOISSINSNVYL 6 1138 122115 UO 99 GH surn yoya A gt Sastatoap LY SSOIO 386110 UL GHD 8880106 IIUM jonpuoo 0 THD 4011 ay 3 y NOISSINSNVUL NOISSINSNVYL 1100 9 dine A 12H35 123135 1 80 99 pue 9 sulInj yorum A9 lt 481 51 LH 6 890110 ou pue sjonpuoo 9312 JJO 1n2 609 UNM Taua 0 oseq 3urjdous Aq 10609 SmI f Jo 98 LO QT uid 03 90131708 NOLLOS I HH 51 snu uado st ou sey md mo dolj diIJ ay poduregpo uorjounf IH WIM AI 7068 oj uorjounf eu 8810010 pue jonpuoo 0j ZMO Sesneo If JO9 gy oj 3128 LOTTAS NOLLVH dO 001 8 1 121138 16 mn gt 8 ANS gt 1
48. 8 0430 TWX 610 492 4246 3 Ltd 552 Newdo d Street London N6E 255 i519 686 9181 QUEBEC Hewlett Packard Canada i Ltd 275 Hymus Blvd Pointe Claire H9R 167 Tel 514 697 4232 TWX 610 422 3022 TLX 05 821 521 HPCL FOR CANADIAN AREAS NOT LISTED Contact Hewlett Packard Canada Ltd in Mississauga CENTRAL AND SOUTH AMERICA ARGENTINA Hewlett Packard Argentina SA Av Leandro N Alem 822 12 1001 Buenos Aires Tel 31 6063 4 5 6 Telex 122443 AR CIGY Cable HEWPACKARG Soton SACI y M Botivar 177 1066 Buenos Aires Te 30 4846 34 5356 34 0460 33 2863 Teiex 011 7595 Cable Biotron Baries BOLIVIA Casa 5 Potosr 1130 20 Box 506 La Paz Tel 7 Telex CWC 5298 ITT 2560082 Cabie KAVLIN BRAZIL Hewlett Packard do Brasil le C Ltda Alameda Rio Negro 750 Alphaville 06400 Barueri SP Tel 429 3222 Cable HEWPACK Sao Paulo Hewlett Packard do Brasil Ltda Rua Padre Chagas 32 90000 6 Alegre RS Tel 5121 22 2998 22 5621 Cable HEWPACK Porto Alegre Hewlett Packard do Brasil Le Ltda Av Pessoa 4664 agoz 20000 Rio de Janeiro RJ Tel Teiex 02 2 825 HPBR ER Cable DAE Rio de Janeiro CHILE Jorge Calcagni y Cia Ltda Vicuna MacKenna 3 Ofic 1204 Casilla 16475 Correo 9 Santiago 34152 Telex JCALCAGNI COLOMBIA instrumentaci n Henrik Langebaek amp Kier S Carrera 7 No 48 75
49. 854 0072 0698 3162 R FXD FLM 46 4K OHM 1 1 8W SWITCH PUSHBUTTON SPDTCAC AND PILOT LIGHT SWITCH SLIDE DPDTC115 230V AC 5101 1254 3101 1235 9100 2728 TRANSFORMER 24 4V CABLE ASSY POWER CORD CABLE ASSY DC2 TO W3 CABLE ASSY EXTERNAL REFERENCE LINE 8120 1348 08743 20021 08745 20064 See introduction to this section for ordering information 5 3 Section V W4 W5 W6 W7 W8 W9 XF1 5 4 Mode1 8743A Table5 1 Reference Designation Index Cont Reterence en 08753 20023 08755 20025 08753 20033 08753 20026 08753 20027 08753 20055 1500 0084 0370 0770 5000 6469 5000 6470 08743 60014 0370 0975 0370 0767 0370 0975 0370 0765 0370 0976 0370 0766 5000 8705 5000 0736 5000 8707 5000 0737 5040 0351 5040 0204 5060 0268 5060 0228 5060 8737 5060 0766 08743 00018 08743 00002 08743 00019 08743 00004 08743 00020 08743 00005 08743 00021 08743 00006 08743 00022 08743 00007 CABLE ASSY W3 A4 CABLE ASSY A4 CABLE ASSY A5 TO DCI CABLE ASSY A6 TO TEST OUTPUT CABLE ASSY DC2 TO UNKNOWN PORT CABLE ASSY A7 TO TRANSMISSION RETURN PORT FUSEHOLDER EXTRACTOR POST TYPE MISCELLANEOUS LENS LABEL PUSHBUTTON TRANS LABEL PUSHBUTTON REFL 10 DB ATTENUATOR CARTRIDGE THIS MANUAL IMPLEMENTS A DIFFERENT COLOR SCHEME FOR THE STANDARD INSTRUMEN
50. 9 62180 ASSY HOLIMS ZV Old MOT uat 1 26 JO yndyno j onpuoo sosneo SI 1019911025 SH JJo 1n2 ST synod uoynqysnd SNVUL y uayy sr ays Ium Jo aseq ay 2 uojnqusnd 29 09 ay st yndyno ayy YWNIITD 8 10 eu ayy 80 1001 TenueW Uy dOTLI dI Ta 6 7 Section VI 6 8 Figure 6 9 Relay Driver Assy Component Identification Applies to A3 Assembly HP Part No 08743 60038 except for Q1 through Q4 which are identified on the PC Board GND WRT GRN OUT RIGHT LEFT 24V GND Figure 6 10 Switch Assy Component Identification Model 2 Section VI Mode1 8743A Assy epoog 11 9 0 5 NAOHS SY 3131402 JAY 1N3NOdWO 83H10 40 SNOIIYNMOIS3Q si LY 39 40 iM ba 0 8 39115 1 30 TINY d31YlA3898Y 34v 4311902557 lt QINI TING 30 328343434 i i I AN 1 ist i Ik N AN zd yp 01 7 no s 8 AJ _0_ AJ 7 42 AJ 1 1 ats 01 m E SNOIIYN21S 3d 328383138 l 5 80 549 6 CI
51. A 6009 Tel 3865455 Telex 93859 Cable HEWPARD Perth Hewlett Veoh Australia 121 Wollongon Street Fyshwick i T 2609 Tel 804244 Telex 62650 Cable HEWPARD Canberra Hewlett Packard Austratia Pty Ltd 5th Floor Teachers Umon Building 495 499 Boundary Street Spring Hill Queensland 4000 Tel 2291544 cable HEWPARD Brisbane BANGLADESH The General Electric Co of Bangladesh Ltd Magnet House 72 Diikusha Commercial Area Motijhell Dacca 2 Tet 252415 252419 Telex 734 Cable GECDAC Dacca ETHIOPIA Abduimahk Box 2635 Addis Ababa Tel 11 93 40 GUAM Medica Only Guam Medical Supply Inc Suite Artport Plaza Box 8947 Tamuning 96911 Tel 646 4 4513 Cable EARMED HONG KONG Schmidt amp Co Hong Kong Ltd Wing On Centre 28th Floor Connaught Road Hong Kong Tel 5 455644 Telex 74766 SCHMC HX INDIA Biue Star Lid Kasturi Buildings Jamshedj Tata Rd Bombay 400 020 Tel 29 50 21 Telex 011 2156 Cable BLUEFROST Blue Star Ltd Sahas 4142 Vir Savarkar Marg Prabhadevi Bombay 400 025 Tet 45 78 87 Telex 011 4093 Cable FROSTBLUE Blue Star Ltd Band Box House Prabhadevi Bombay 400 025 Tel 45 73 01 Telex 011 3751 Cable BLUESTAR Blue Star Ltd Bhavdeep Stadium Road Ahmedabad 380 014 Tel 42880 Telex 234 Cable BLUEFROST Blue Star Ltd 7 Hare Street P O Box 506 Caicutta 700 001 Tel 23 0131 Telex 021 7655 Cable BLUESTAR Bl
52. Alexi A1R2 A1R3 181 A1R5 A1R6 A1R7 A2 A2CR1 A2CR2 A2DS1 A2DS2 A2Q1 A2Q2 A2R1 A2R2 A2R3 A2R4 A2R5 A2R6 A2R7 A2S1 252 A3 1 A3CR1 A3CR2 A3CR3 A3CR4 ASCR5 A3CR7 A3CR8 A3CRI A3CR10 08743 60001 0160 2930 0180 0141 1901 0026 1901 0026 1901 0026 1901 0026 1901 0200 1902 3193 1854 0071 1854 0039 1854 0071 0698 3640 0757 0421 0757 0199 0811 1672 0698 3154 0757 0438 2100 1758 08743 60002 1901 0025 1901 0025 2140 0213 2140 0213 1854 0071 1854 0071 0757 0438 0698 3450 0757 0438 0757 0438 0698 3450 0757 0438 0757 1000 08743 60038 0150 0121 1901 0025 1901 0025 1901 0025 1901 0025 1901 0025 1901 0025 1901 0025 1901 0025 1901 0025 1901 0025 Model 8743A Table 5 1 Reference Designation Index Reference E POWER SUPPLY ASSY C FXD CER 0 01 UF 80 20 100VDCW C FXD ELECT 50 UF 75 10 SOVDCW DIODE SILICON DIODE SILICON 0 75A 200PIV DIODE SILICON 0 75 200PIV DIODE SILICON 0 75A 200PIV DIODE SILICON 3A 100PIV 0 75A 200PIV DIODE BREAKDOWN 13 3V 5 TRANSISTOR SILICON NPN TRANSISTOR SILICON 2N3053 TRANSISTOR SILICON NPN FXD MET OX 1 8K OHM 5 2W FXD MET FLM 825 OHM 1 1 8W FXD MET FLM 21 5K OHM 1 1 8W WW 3 3 OHM 5 2W FXD MET FLM 4 22K OHM 1
53. D o ce 4 s 1 wm UO HOW 12 121135 REN N gt ynnw seve P 35 1 3103 Ol I 94 82 gt 1 12 142 1 0 24 s 12 ASZ lt 23 tYX 1 p I I 2 40 2 20009 7180 I ASSY HOLIMS Old i I vosil ON T A lt By M ae ey 0 d 142 rosal ONN 1700 6681 1 9199 1931 NE Ed ON d lt 8 2 IX 01 5 I 1 VX r LLL I 8 009 80 ASSY 803 80 V I I 300 NOISS IWSNY31 804 1180 JGOW 133113 303 SHOLVAIWAN 1 5 43 SY NMOHS ASSY V 5109 110 20 390 4 9NId 01 12130538 539 110 2 SNOILIQNOO 11330 1100 S310N 39 8012 9 131911 195 1 81 S3ION 10 05 ta 5 810001 UN 40 EI 20009 49180 ASSY HOLIMS 2 Old 6 9 Section VI Mode1 8743A Figure 6 12 Power Supply Assy Component Identification 6 10 Section VI Mode1 8743A HOLEMS 2 1 LQ CoO lt L Cu O lt 8 EYX 8 ASSY 31 V 91 ASSY HOLIMS 01 L A EVD P ASSY HAHO 38 OL 1 I Ajddng 317 NAOHS SY 31319 03
54. MANUAL OPERATING AND SERVICE THIS MANUAL CONTAINS A SUPPLEMENT FOR A SPECIAL MODIFICATION TO THE INSTRUMENT 0 560157 SEE INSIDE COVER REFLECTION TRANSMISSION TEST UNIT 8743A fp PACKARD HEWLETT 66 09440 il D PACKARD HEWLETT OPERATING AND SERVICE MANUAL MODIFICATIONS S PARAMETER TEST SET 8743A H23 SERIAL NO PREFIX 1702 AND ABOVE USE THIS MODIFICATION MODIFICATION PART NO WITH MANUAL PART NO 08743 90035 APRIL 1978 08743 90010 PRINTED JULY 1972 REV FEBRUARY 1979 HEWLETT PACKARD COMPANY 3273 AIRWAY DRIVE SANTA ROSA CALIFORNIA U S A MSOSTO9S I ERE E ER i ND HEWLETT PACKARD SE 2 of 7 8743A H23 INTRODUCTION This Modification describes the differences in the 8743 23 S Parameter Test Set In addition it describes the manual 00 necessary to document the instrument DESCRIPTION The Model 8743 1123 S Parameter Test Set is a standard 8743A which has been tested to operate to 18 GHz and also provides 10 dB additional dynamic range for transmission measurements and provides an additional 10 dB isolation between the UNKNOWN and TEST ports for reflection measurements The 8743A H23 also provides a variable O dB to 70 dB attenuation to the UNKNOWN port by means of an internal programmable attenuator Attenuation is achieved by the external closure of a Switch such as the 59306A HP IB Relay Actuator MANUAL CHANGES NECESSA
55. N 10 FLEXIBLE ARM Figure 3 6 Transmission Measurements Using Network Analyzer with 8414A Polar Display Unit Sheet 1 of 2 3 10 Model 8743A CALIBRATION DESCRIPTION Calibration consists of adjusting the 8743A REFERENCE PLANE EXTENSION to obtain equal reference and test channel electrical lengths and obtaining reference magnitude and phase indications PROCEDURE 1 Figure 3 6 Transmission Measurements Using Network Analyzer with 8414A Polar Display Unit Sheet 2 of 2 Connect equipment as shown in setup Con nect a 10 dB attenuator suchasthe HP Option 10 to the Flexible Arm see graph 3 17 and connect the attenuator to the 8743A UNKNOWN port Depress the 8743A TRANS pushbutton Set the Sweep Oscillatorto automatic sweep Adjust the Sweep Oscillator and Network Analyzer controls to phase lock the Network Analyzer over the frequency bandof interest Push and hold the 8414A beam center push button and adjust the centering controls to place the dot in the center of the polar dis play Obtain equal reference and test channel elec trical lengths by adjusting the REFERENCE PLANE EXTENSION to collapse the trace to dot orsmallest cluster If the digital counter is to be used to determine the electrical length of the device under test it should be set to Section III zero A convenient way to do this is as follows a Adjust REFERENCE PLANE EXTEN SION crank until counter reads all zeros
56. NAL PACKAGING 2 5 The samecontainers materials used in fac tory packaging can be obtained through the Hewlett Packard offices listed at the rear of this manual Remove the rear panel coaxial link wrap it separately and include in shipping container 2 6 If the Model 8743Ais being returnedto Hewlett Packard for servicing attach a tag indicating the type of service required return address model number and full serial number Also mark the container FRAGILE to assure careful handling 2 7 In any correspondence refer to the instrument 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 8743A and the rear panel coaxial link separately in heavy paper or plastic If shipping to a Hewlett Packard service 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 double wall carton made of 350 pound test material is adequate c Use enough shock absorbing material 3 to 4 inch layer around all sides of the instrument to provide firm cushion and prevent movement inside the contain Protect the control panel with cardboard d Seal the shipping container securely and mark it FRAGILE to assure careful handling e In anycorrespondence refer to the instrument by
57. RES 3 12 Procedures for making transmission and reflec tion measurements using the HP 8743A with the HP 8410A Network Analyzer are included in Figures 3 3 through 3 6 3 1 Section III 3 2 Mode 8743A FRONT PANEL FEATURES POWER Combination line power switch and power on indicator Pushbutton glows when instrument is on Pushbutton retainer un screws for lamp replacement REFERENCE PLANE EXTENSION Crank controls internal line stretcher to equalize the electrical length of the test and reference channels for initial calibration and to compensate for the electrical length of the device under test up to 15 cm for reflection tests and upto 30 cm fortransmissiontests ZERO thumbwheel is for setting reference indication on counter without changing line length If more compensation is needed ad ditional line may be installed in place of the removable rigid coax link on the rear panel FUNCTION i FUNCTION selectors Set up the internal microwave circuits for making reflection or transmission measurements Pushbutton glows indicating function selected TRANSMISSION RETURN port Makes RF connection from the device under test for transmission measurements APC 7 type 90 ohm precision 7mm sexless connector UNKNOWN port Makes RF connections to the device under test for reflectionor transmis sion measurements APC 7 type 50 ohm precision 7mm sexless connector Amphenol RF Division Danbury Connecticut
58. RY TO DOCUMENT THE HP 8743A H23 Page 1 1 Paragraph 1 2 Change Frequency Range to 2 0 18 0 GHz Page 1 Table 1 1 Change Frequency Range to 2 0 18 0 GHz Add to Reflection Coefficient UNKNOWN port 12 4 to 18 0 GHz lt 0 20 VSWR 1 5 Add to Reflection Coefficient Transmission Return Port Reflection Measurement 12 4 18 0 GHz lt 2 VSWR 1 5 Transmission Measurement 12 4 18 0 GHz lt 23 VSWR 1 6 Add to Coupler Directivity 2 0 12 4 GHz gt 30 dB 12 4 18 0 GHz 2 18 dB typically 20 dB Page 5 3 Table 5 1 Change A5 A6 A7 to HP Part No 5080 0290 Switch Tree Matched set of three Change DC to HP Part No 5080 0288 Coupler Assembly Test PRINTED IN U S A 1400 FOUNTAIN GROVE PARKWAY SANTA ROSA CALIFORNIA 95404 U S A YSOSTO9S T MANUAL CHANGES Page 5 3 Change Add Add Change Change Delete Add Add Add Change Add Add Page 6 3 Change Page 6 4 Change Page 6 5 Change h HEWLETT pig PACKARD TIT or Cont d Table 5 1 Cont DC2 to HP Part No 5080 0299 Coupler Assembly Reference J101 HP Part No 1251 0143 Connector 14 Pin Female A101 3332181 003 Attenuator 70 dB programmable to HP Part 08746 20031 Cable Patch Line 6 to HP Part No 08743 20040 Cable Coax Line 8 101 HP Part 08743 20049 Cable Assembly CPLR ATTEN W102 HP Part 08743 20050 Cable Assembly ATTEN CPLR W103 HP Part 08743 60040 Cable Assem
59. T COLORS PRIOR TO THIS CHANGE ARE NOW AVAILABLE AS OPTIONS REFER TO THE LIST BELO 8743A STANDARD INDICATES COLOR SCHEME FOR THE 8740A BEGINNING WITH INSTRUMENTS SERIAL PREFIXED 1226 CINCLUDES MINT GRAY FRONT PANEL AND OLIVE GRAY CABINET 8743A OPTION 85 INDICATES LIGHT GRAY FRONT PANEL 8743A OPTION X95 INDICATES COLOR SCHEME FOR 8743A PRIOR TO SERIAL PREFIX 1226 INCLUDES LIGHT GRAY FRONT PANEL AND BLUE GRAY CABINET PUSHBUTTON JADE GRAY STANDARD PUSHBUTTON GRAYCOPT 85 X95 BEZEL END CAPCLEFTOJADE GRAYCSTANDARD BEZEL END CAPCLEFTOGRAYCOPT 85 X95 BEZEL END CAPCRIGHT JADE GRAYCSTANDARD BEZEL END CAPCRIGHT GRAYCOPT A85 X95 SIDE COVER REAR OLIVE GRAY STANDARD SIDE COVER REAR BLUE GRAYCOPT X95 SIDE COVER FRONT OLIVE GRAYCSTANDARD SIDE COVER FRONT BLUE GRAYCOPT X95 BEZEL COUNTER MINT GRAY STANDARD BEZEL COUNTER GRAYCOPT A85 X95 COVER ASSY BOTTOM OLIVE GRAYCSTANDARD COVER ASSY BOTTOM BLUE GRAYCOPT X95 RETAINER HANDLE ASSY OLIVE GRAYCSTANDARD RETAINER HANDLE ASSY BLUE GRAYCOPT X95 PANEL REAR MINT GRAY STANDARD PANEL REAR LIGHT GRAYCOPT X95 COVER ASSY TOP OLIVE GRAYCSTANDARD COVER ASSY TOP BLUE GRAYCOPT X95 TOP COVER REAR CORNER OLIVE GRAYCSTANDARD TOP COVER REAR CORNER BLUE GRAYCOPT X95 FILLER PLATE CENTER OLIVE GRAYCSTANDARD FILLER PLATE CENTER BLUE GRAYCOPT X95 FILLER PLATE SIDE OLIVE GRAYCSTANDARD FILLER PLATE SIDE BLUE GRAYCOPT X95 See introductio
60. UXEMBUAG Hewlett Packard Benelux NV Avenue du Col Vert 1 iGroenkraagiaan B 1170 Brussels 02 672 22 40 Cable PALOBEN Brussels Telex 23 494 MOROCCO Doibeau B1 rue Karatchi Casablanca Tel 3041 82 Telex 23051 22822 Cable MATERIO Gerep 3 rue d Agadir Casabianca Tel 272093 5 Telex 9 Cable GEREP CASA Cogedir 31 tue Omar Siaour Casablanca Tel 27 65 40 Telex 21737 23003 Cable COGEDIR NETHERLANDS Hewlett Packard Benelux N V Van Heuven Goedhartlaan 121 Box 667 NL Amstelveen 1134 Tel i020 4 20 21 NORWAY Hewiett Packard Norge S Ostercalen 18 Box 34 1345 Osteraas Tel 02 1711 BO Telex 16621 hpnas n Hew ett Packard Norge AS Nygaardsgaten 114 5000 Bergen MINNESOTA 2400 N Prior Ave St Paul 55113 Tel 6121636 0 MISSISSIPPI 322 N Mart Plaza Jackson 39206 Tel 601 982 9363 MISSOURI 11131 010 00 Ave Kansas City 7 Tel 816 763 8000 TWX 910 771 2087 1024 Executive Parkway St Louis 63141 Tel 314 878 0200 NEBRASKA Medica gay 710 Mercy Road Suite 101 Omaha 68106 4021 392 0948 NEVADA Las Vegas Tei 702 735 6510 NEW JERSEY W 120 Century Rd Paramus 07552 Tel 2911 265 5000 TW 716 990 4951 Cysta Brook Professional Buiging Route 35 Eatontown 07724 201 542 1364 NEW MEXICO PO Sox 11634 Station 11300 Lomas Blvd NE Albuquerque 3 Te 505 292 1330 TWX 910 989 1185 156 Wyatt Drive Las Cruces 88001
61. Yokogawa Hewlett Packard ttd Tamgawa Buiiding 2 24 1 Tsuruya cho Kanagawa ku Yokohama 221 Tel 045 312 1252 Telex 382 3204 YHP YOK YokoQawa Hewiett Packard Ltd Mito Mitsui Buiiding 105 1 chome San no matu Mito 1 310 Tel 0292 25 7470 Yokogawa Hewlett Packara Ltd inoue Building 1348 3 Asahi cno 1 Atsugi Kanagawa 243 Tel 0462 24 0452 Yokogawa Hewlen Packarc Ltd Kumagaya Hachiyuni Building 4th Floor 3 4 Tsukuba Kumagaya Satata 360 Tei 0485 24 6563 KENYA Advanced Communicators Lid Box 30070 Nairobi Tel 331955 Telex 22639 Medical Only Internationa Aeradio E P 0 Box 19012 Nairobi Airport Nairobi Tel 336055 56 Telex 22201 22301 Cable INTAERIO Narso Medical Only International Aeradio Ltd 0 Box 95221 Mombasa KOREA Samsung Electronics Co Ltd 15th Floor Daeyonga Bidg 25 5 1 KA Choong Moo Ro Chuag Ku Seoul Tel 23 6811 778 3 21 234 Telex 22578 MALAYSIA Hewiett Packarc Sales Suite 2 21 2 22 Bangunan Angkasa Raya Jalan Ampang Kuala Lumpar Tel 23320 27491 SON BHO Prote Engineering Box 7 Lot 259 Satok Road Kuching Sarawak Tel 53544 Cable PROTELENG MOZAMBIQUE AN Goncalves 110 162 1 Apt 14 D Luis Caixa Postal 107 Maputo Tel 27091 27114 Telex 6 203 NEGON Mo NEW GUINEA Hewlett Packard Australia Pty Ltd Development Bank Buiiding Ground Floor Ward Strip
62. ained from the nearest Hewlett Packard office SEW ITEM HEWLETT PACKARD MAKE MANUAL CHANGES SERIAL PREFIX OR NUMBER MAKE MANUAL CHANGES TT CHANGE Page 5 3 Table 5 1 Change A3R12 to HP Part No 0757 0816 R FXD MET FLM 681 OHM 1 1 2W Change A3R15 to HP Part No 0757 0458 MET FLM 51 1K OHM 1 1 8W CHANGE B Pace 5 3 Table 5 1 Change F1 115 to HP Part No 2110 0008 FUSE 1 2 SLOW BLOW Change F1 230V to HP Part No 2110 0340 FUSE 0 25A SLOW BLOW Change S1 to HP Part No 3101 0100 Same description Change S2 to HP Part No 3101 1235 Same description Change W1 to HP Part No 8120 0078 Same description Page 6 11 Figure 6 13 Replace power supply primary circuit with partial schematic shown below MOTE SS l GEE FIGURE FOR MOTE S MEAS TOG TACEN T RECPECT TO ARA Pno 7 OR 2 VO TA CHANGE C Page 5 2 Table 5 1 Change A1R4 to HP Part No 0811 1672 FXD WW 0 82 OHM 5 2W Change A3 to HP Part No 08743 60003 Same description CHANGE D Page 3 15 Figure 3 12 Use the following Figure 3 12 in place of the Figure 3 12 shown in the manual Page 5 4 Table 5 1 Delete 08743 00024 listing A 1 Appendix Mode1 8743A PUSHBUTTON LAMP REPLACEMENT add 1 DO NOT REMOVE PUSHBUTTON Remove pushbutton lens and label by inserting sold eri
63. al transistor remote control circuit is shown in Figure 3 10 The 8743A supplies approximately 12 Vdc for the open circuit condition and 12 mA of current for the short circuit condition 3 20 CARE OF APC 7 CONNECTORS 3 21 RF connections to and from the device under test and to the phase amplitude ratio indicator are made with APC 7 style 50 ohm 7 mm sexless connec tors These connectors should be handled with partiu lar care for two reasons a Continuity through 7 connectors is obtained by end to end contact of the inner and outer conductors Consequently the electrical performance of the con nector is largely dependent upon the condition of these exposed surfaces b The inner conductor of the front panel UN KNOWN connector is attached to a directional coupler and any rotational force the inner conductor may result in damage to the coupler Section III REMOTE CONTROL OR COMPUTER 8743A TRANSISTOR SWITCH CONTROL VOLTAGE PANEL REMOTE INPUT CONNECTOR Typical Transistor Remote Control Circuit Figure 3 10 Table 3 2 Signal Requirements for Remote Operation Pin 18 36 to Measurement 3 22 Important recommendations about the handling and care of the APC 7connectors are given in Figure 3 11 The part of an input connector that is most likely to be damaged is the inner conductor contact Since it protrudes slightly beyond the plane of elec trical contact any
64. axial short such asthe HP11565A to the 8743A UNKNOWN port and depress the REFL pushbutton Adjust 8413A phase offset control for 180 off set either polarity Set the Sweep Oscillator to automatic sweep Adjust the Sweep Oscillator and Network Analyzer controls to phase lock the Network Analyzer over the frequency bandof interest Adjust the oscilloscope to display the swept phase output from the 8413A Obtain equal reference and test channel elec trical lengths by adjusting the REFERENCE PLANE EXTENSION for a horizontal phase display on the oscilloscope If the plane of measurement is to be extended beyond the plane of the short the digital counter should be set to zero so that it can be used to set the required extension accurately A convenient way to do this is as follows a Adjust REFERENCE PLANE EXTEN SION crank until counter reads all zeros b Holdthumbwheelto retain zero indication and readjust REFERENCE PLANE EX TENSION for a horizontal display on the oscilloscope For swept frequency measurements adjust the oscilloscope display as follows a Disconnect oscilloscope vertical input from 8413A AMPLITUDE channel to simulate zero volts from 8413A Note trace position b Reconnect vertical input and adjust 8410A test channel gain and amplitude vernier controls so that the average of the trace falls on the zero trace position noted in step a above c Adjust oscilloscope vertical position for a
65. bly Attenuator Rear Panel to HP Part No 08743 00029 Bracket Attenuator HP Part 08743 00030 HP P N 1251 0142 Connector 14 Pin Male Figure 6 4 to Figure Figure 6 5 to Figure 2 Figure 6 6 to Fiqure 3 Add Figure 4 PRINTED IN U S A 1400 FOUNTAIN GROVE PARKWA Y SANTA ROSA CALIFORNIA 95404 U S A 8743A H23 DC de o m s s II E lt Page 4 of 7 E HEWLETT KE PACKARD r d 11 22 28743 20050 T s AIDE 32371H 0 m Ls 5 y i 5 tJ wio 08743 60040 m Rom gt d 3 1 1 E SPIRAL WRAP 77 90 00 5 PRINTED IN U S A JIN CONNECTION TABLE BELOW 71 FIGURE 1 1 560150SR NIA 95404 U S A PIN NO Page 5 of 7 8743A H23 PACKARD XL HEWLETT RF INPUT O UNKNOWN TRANSMISSION RETURN ADDITIONAL FIXED LENGTH LINE SECTION REFERENCE LINE DIRECTIONAL COUPLER STRETCHER DIRECTIONAL COUPLER FIGURE 2 REFERENCE PLANE EXTENTION CM 10 dB PAD SIMPLIFIED RF SCHEMATIC DIAGRAM 70 dB PROGRAMMABLE ATTENUATOR COAXIAL SWITCHES PRINTED U S A REFERENCE O TEST 1 560150SR
66. coefficient of the device under test See Figure 3 7 The error is calibrated out with a sliding load Figure 3 8 de picts the sliding load in one position ata single fre quency As the sliding load is moved the magnitude of its reflection coefficient remains constant but the phase of the coefficient changes As the loadis 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 If the magnitude of the directivity was zero the locus circle would be centered about the origin as shown in Figure 3 9 The directivity vector goes from the origin to the center of the locus circle When the location of the center ofthe circleis known the directivity vector can be subtracted from the measured reflection The resultant is the reflection coefficient of the device under test 3 15 The vector subtraction can be performed di rectly with the horizontal and vertical controls on the 8414A polar display Increase the 8410A TEST CHAN NEL GAIN so full scale reflection on the polar display is suitable for the component you wish to measure Attach a sliding load such as the HP 905A to the 8743A UNKNOWN port Slide the load and adjust the horizon tal and vertical controls until the circle rotates about the center of the CRT The effect of directivity is now cancelled for this frequency and this test channel gain on the Network Analyzer
67. components circuits or conditions are given on the diagram to which they apply 6 5 As an aid to finding components and assem blies in the set of diagrams each diagram has a box labelled Reference Designations that contains all the reference designations appearing on the diagram REFERENCE DESIGNATIONS NO PREFIX 1 2 CRI 33 C1 Assembly Q1 Part No Socket Desi nation Reference For A2 Assy Designation Index J3 not Mounted on Assembly A2 1 Te l 2 Value selected Plug in Number indicates for best Operation Socket Pin of Socket XA2 Wire Color Coi zc Code same as Resistor Code value shown is Connector Information First number iczc ifies Ground Color Second Number identifies Wider Strip Third Number identifies Narcc Strip E g 947 denotes White Yellow islet wire MIL STD 681 Average or most Commonly selected value Figure 6 1 General Information on Schematic Diagrams 6 1 Section VI Mode1 8743A Resistance in ohms capacitance in microfarads unless otherwise noted Voltages shown on schematic diagrams taken with HP 414A AUTOVOLTMETER input resistance 100 M Q accuracy 1 of reading 0 5 of full scale Unless otherwise indicated on schematic voltages taken with negative terminal of voltmeter connected to A7TP2 Asterisk denotes a factory selected value Value shown is typical Part may be omitted P O Part Of Encloses front panel designations
68. convenient amplitude reference d Disconnect oscilloscope vertical input from 8413A PHASE channel to simu late zero volts dc from 84213 Note trace position Section III e Reconnect vertical input and adjust 8410A phase vernier control sothat the average of the trace falls on the zerotrace position noted in step d above f Adjust oscilloscope vertical position for a convenient phase reference 8 calibrate for single frequency measure ments perform the following a Set the Sweep Oscillator for single fre quency operation b Adjust the 8410A PHASE VERNIER for a zero degree indication on the 8413A c Adjust 8410A test channel gain andampli tude vernier controls fora 0 dB indication on the 8413A NOTE Calibration for greater accuracy is discussed in Paragraph 3 14 and 3 15 MEASUREMENT 1 Remove thecoaxial short andconnect the de vice to be testedto the 8743A UNKNOWN port 2 Return the 8413 phase offset to zero 3 For swept frequency measurements read magnitude and phase as follows a For magnitude note 8410A test channel gain settings Increase test channel gain to return oscilloscope display to refer ence obtained during calibration The difference in test channel gain settings is the reflection magnitude in return loss b For phase adjust oscilloscope vertical sensitivity and position controls to view the swept phase display of the device under test Use the calibrated 8413A output
69. dmium plate CRT cathode ray tube Cw clockwise DEPC deposited carbon DR drive ELECT electrolytic ENCAP encapsulated EXT external F farads FH flat head FILH fillister head FXD fixed G giga 109 GE germanium GL glass GRD ground ed LH LK WASH LOG LPF MEG MET FLM MET OX MFR MHZ MINAT MOM MTG MY N C NI PL WoW n H U H Ww Wy H H m H H H m m H W H H H REFERENCE DESIGNATORS b Address the order or inquiry to the nearest Hewlett Packard sales and service office listed at the rear of this manual 9 9 order a part not listed in the tables a Give a complete description of the part includ ing its function and location b Give the instrument model number and com plete serial number Address the order of inquiry to the nearest Hewlett Packard sales and service office listed at the rear of this manual fuse MP mechanical part V vacuum tube neon filter P plug bulb photocell etc integrated circuit Q transistor VR voltage regulator jack R resistor w cable relay RT thermistor x socket inductor 5 switch Y crystal loud speaker T transformer 2 tuned cavity meter TB terminal board network microphone TP test point ABBREVIATIONS henries N O normally open RMO rack mount only hardware NPO negative positive zero RMS root mean square hexagonal zero temperature RWV reverse working mercury coefficient voltage hour s
70. ductors A special Spanner wrench HP Stock Number 5060 02371 is re quired 3 30 To remove a coupling mechanism a Fully extend the coupling sleeve to provide a guide for the spanner wrench b Align the wrench so both pegs engage the holes end of the coupling sleeve assembly c Unscrew the sleeve assembly by turning the wrench counterclockwise 3 31 When installing a coupling mechanism set the coupling nut in place on the connector first then thread on the coupling sleeve assembly and tighten it firmly with the spanner wrench Extending the coupling sleeve helps to keep the spanner in position during the final tightening CAUTION The UNKNOWN port connector is part ofa directional coupler When tightening a coupling sleeve assembly on this connector do not apply excessive torque Excessive torque may be transmittedto the center con ductor and may damage the coupler 3 32 POWER SWITCH LAMP REPLACEMENT 3 33 The lamp that indicates line power is applied to the Model 8743A is housed in the POWER switch pushbutton To replace the lamp unscrew the retain ing ring near the front panel pull out the pushbutton and remove the lamp Replacement lamp part number is HP 2140 0052 LAMP GLOW Model 8743A section SECTION IV MAINTENANCE 4 1 INTRODUCTION 4 2 This Preliminary Operating and Service Manual provides instructions for testing the performance of the 8743A The complete Operating and
71. en coupling nuts tends to loosen the electrical connection To Disconnect 2 Loosen coupling nut of the connector show ing the wider gold band WIDER BAND IMPORTANT Part the connectors carefully to prevent striking the inner conductor contact Figure 3 11 COUPLING SLEEVE electrical performance COUPLING NUT INNER CONDUCTOR CONTACT Protect the contacting surfaces when the con nector is not in use by leaving the coupling Sleeve extended Use lintless material and or firm bristled brush such as tooth brush for cleaning Ifa cleaning fluid is needed use isopropyl alcohol IMPORTANT Do not use aromatic or chlori nated hydrocarbons esters ethers terpenes higher alcohols ketones or ether alcohols such as benzene toluene turpentine dioxane gasoline cellosolve acetate or carbon tetra chloride Keep exposure of the connector parts to both the cleaning fluid andits vapors as brief as possible APC 7 Connectors Model 8743A Section A bulb extractor tool HP Part No 4040 0427 has been developed to facilitate bulb replacement for backlighted pushbutton switches of the type shown below BULB REPLACEMENT PROCEDURE 1 Place the end of thumb of one hand over the corner of the pushbutton switch With the bulb extractor tool in the other hand place the hooked end of the tool into the front of the slot on the bottom of the pushbutton A and gently push up until the l
72. enelux SA Avenue du Col Vert 1 Gtoenkraaglaan B 1170 Brussels Tel 02 560 50 50 Cable PALOSEN Brussels Telex 23 494 saloben bru CYPRUS Kypronics 0 Gregarios Xenopoulos Street 1152 Nicosia Tel 45628 29 Cable Kypronics Pandehis Telex 3018 CZECHOSLOVAKIA Vyvojova a Provozn 32 Vyzkumnych Ustavu v Bechovicich CSSR 25087 Bechovice u Prahy Tel 89 93 41 Telex 12133 institute of Medical Bionics Vyskumny Ustav Lekarske Bioniky Jedlova 6 CS 88346 Bratislava Krarnare Tel 4251 Telex 93229 DDR Entwicklungslabor der TU Dresden Da Meinsberg DDR 730 Waldheim Meinsberg Tel 37 667 Teiex 518741 Export Contact AG Zuerich Guenther Forgber Schlegelstrasse 15 1040 Bertin Tel 42 74 12 Telex 111889 DENMARK Hewlett Packard 5 Datavej 52 DK 3360 Birkerod Tet 02181 66 40 Cable HEWPACK AS Telex 37409 dk Hewlett Packard AS Naverve 1 DK 8600 Silkeborg 06 82 71 66 Telex 37409 dk Cable HEWPACK AS EGYPT LEA International Engineering Associates 24 Hussein Hegazi Street Kasr el Aint Cairo Tel 23 829 Telex 93830 Cable INTENGASSO SAMITRO Sami Amin Trading Office 18 Abdel Aziz Gawish Abdine Cairo Te 24932 Cable SAMITRO CAIRO ALABAMA Box 4207 8290 Whitesburg Dr Huntsville 35802 Tel 205 881 4591 8933 Roebuck Blvd Birmingham 35206 Tel 205 836 2203 2 ARIZONA 2336 Magnolia St Phoenix 85034 Tel 1602
73. er conductor contacts A special tool is required to install these contacts Install a new attenuator cartridge HP Part No 08743 60014 with a washer on each side of the cartridge NOTE The marked end of the cartridge has the lowest reflection and should go into the coupler Install the round stainless steel part removed in step 1 Figure 4 2 Insertion Loss Troubleshooting Sheet 3 of 4 WASHER HP PART No 5000 8676 Figure 4 8 Position of Outer Conductor Washer Model 8743A Model 8743A 5 1 5 2 5 3 ORDERING INFORMATION INTRODUCTION Section VI SECTION V REPLACEABLE PARTS This section contains information for ordering replaceable parts Partsarelistedinalpha numerical order by reference designation together with their HP stock numbers and descriptions 5 4 When ordering a replacement part listed in Quote the Hewlett Packard stock number for Table 5 1 a the part A assembly B motor BT battery capacitor coupler CR diode DL delay line DS device signaling lamp E misc electronic part A amperes AFC automatic frequency control AMPL amplifier BFO beat frequency oscillator BE CU beryllium copper BH binder head BP bandpass BRS brass BWO backward wave oscillator CCW counter clockwise CER ceramic CMO cabinet mount only COEF coefficient COM common COMP composition COMPL complete CONN connector ca
74. likely A6 or W7 Figure 4 2 Insertion Loss Troubleshooting Sheet 2 of 4 4 8 Response Curve A See Note 2 M V 2 dB See Note 3 Response Curve C lt 2 3 dB NOTE 1 Reflections from a discontinuity on one side of the line stretcher will combine with reflections in the line stretcher or with reflections from the other side of the line stretcher The response curve is the resultant of all discontinuities By changing the line stretcher position the phase relationship between the sets of reflections changes and the response curve will be altered Monitor frequency response at several REFERENCE PLANE EXTENSION settings If the overall power variation is greater than 2 dB at any REFERENCE PLANE EXTENSION setting the trouble may be in the line stretcher or discontinuities on each side of the line stretcher NOTE 2 A relative increase in power indicates a trouble in the reference channel A relative decrease in power indicates a trouble in the test channel A narrow spike is most likely caused by poor contact of cable center conductor pins one finger of a female pin not making contact or gross outer conductor separation A power change over a broader frequency range is most likely caused by a cable outer conductor grounding problem For outer conductor grounding problems on instruments with Serial Numbers 928 00315 and below disassemble the cable and add a washer HP Part No 5000 8676 as shown in Figure
75. mission Measure 1 18 Complementary Equipment 1 2 ments by Reducing Mis 1 19 Mode1 8410A Network match Ambiguity 3 12 Analyze F 4 a 1 2 3 18 Remote Operation 3 13 1 21 Signal Source 1 2 3 20 Care of APC 7 Connectors 3 13 1 23 Instruments Covered by Manual 1 2 3 23 Contact Replacement 3 13 3 28 Coupling Mechanisms 3 16 II INSTALLATION 24 59 Pb REN 2 1 3 32 Power Switch Lamp Replacement 3 16 2 1 Incoming Inspection 2 1 IV MAINTENANCE 4 1 2 3 Repackaging for Shipment 2 1 4 1 Introduction ov 4 1 2 4 Using Original Packaging 2 1 4 3 RF Troubleshooting 4 1 2 8 Using Other Packaging 2 1 2 10 Preparation For Use 2 1 4 5 Performance Test Procedures 4 1 2 11 Power Requirements 2 1 2 13 115 230 Volt Operation 2 1 V REPLACEABLE PARTS 5 1 2 16 Power Cable 2 1 5 1 55 222 52 5 1 2 19 Bench Operation 2 1 9 3 Ordering Information 5 1 2 21 Rack Mounting 2 1 HI OPERATION 3 1 VI SCHEMATIC DIAGRAMS 6 1 3 1 1511 7008000000 24 ces bade 3 1 6 1 Introductio olv 6 1 LIST OF ILLUSTRATIONS Number Title Page Number Title Page 1 1 Model 8743A Reflection Transmission 4 1 Performance Test
76. n Rico House Amorsolo cor Herrera Str ye Mes Makati ox 1510 Metro Manila 85 35 81 85 34 91 85 32 21 Telex 3274 ONLINE RHODESIA Field Technical Sales 45 Kelvin Road North P O Box 3458 Salisbury Tel 705231 5 ines Telex 4122 SINGAPORE Hewlett Packard Singapore Pte 114 1150 Depot Road Alexan ra P O Box 58 Singapore 4 Tel 270 2355 Telex HPSG RS 21485 Cable HEWPACK Singapore SOUTH AFRICA Hewiett Packard South Atrica Ltd Private Bag Wendywood Sandton Transvaal 4 Hewlett Packard Centre Daphne Street Wendywood Sandton 2144 802 10408 Telex 6 4782 Cable HEWPACK Johannesburg SENE z P3exard South Africa E Ltd Sox 120 F 3 Cape Province 7450 P Centre Forest Drive Pinelands Cape Province 7405 SA LANKA E tan Agencies Lid 27 4 Union Place ombo 2 Te 35947 3377METROLTD CE METROLTO SUDAN Rez son Trade P gt 921 Khartoum Te 24046 Teir 37 TAIWAN Rew ert Packard Far East Ltd Te war Branch 39 Thung Hsiao West Road Section 1 7th Floor Taipei 3819160 9 3141010 Cate HEWPACK TAIPEI ett Packard Far East Ltd Tz wan Branch 62 2 Chung Cheng 3rd Road Kaohsiun te G7 249316 Kaonsiung yuca Only Sa Kwang Instruments Co Ltd 20 Yung Sui Road Taipei 3615446 9 4 lines 22894 SANKWANG Cadie SANKWANG Taipei TANZANIA Only
77. n to this section for ordering information Model 8743A Reference Designation 08743 00024 08743 00013 08743 00023 08743 00014 08745 20068 08745 2019 08745 20069 08745 2020 Description PANEL FRONT MINT GRAYCSTANDARD PANEL FRONT LIGHT GRAYCOPT 85 X95 SUB DECK OLIVE GRAY STANDARD SUB DECK BLUE GRAYCOPT X95 TRIM LOWER FRAME MINT GRAYCSTANDARD TRIM LOWER FRAME LIGHT GRAYCOPT A85 X95 TRIM UPPER FRAME MINT GRAYCSTANDARD TRIM UPPER FRAME LIGHT GRAYCOPT A85 X95 See introduction to this section for ordering information Section V 5 5 5 6 Mode1 8743A Section VI SECTION VI SCHEMATIC DIAGRAMS 6 1 INTRODUCTION 6 2 The schematic diagrams in this section repre sent the circuits electrically They are not wiring diagrams though wire colors are given where practical 6 3 The circuits are arranged according to signal flow consequently some switch and circuit assem blies may be shownin part on more than one diagram If so the reference designation is preceded by P O for Part Of and is followed by a notation of the Assembly Assembly Designation Name Pm M O A2 DC REGULATOR ASSY 08708 6007 number of parts into which the asse mbly has been divided 6 4 Some of the general information obtainable from the schematic diagramsis shown in Figure 6 1 Notes and explanations of symbols pertaining to all the diagrams are contained in Figure 6 2 Notes about specific
78. ng aid or other small blunt tool the slot in the bottom of the pushbutton Press tool forward against lens tab to release lens and label If pushbutton comes out see NOTE in Step 3 2 Remove defective lamp A needle nose pliers or tweezers can be used as an extracting tool Install new lamp HP part number 2140 0213 3 Press lens and label into place in pushbutton opening Figure 1 NOTE H the pushbutton has been removed a Reinstall pushbutton lens and label removed Insert the metal contactor in slot of pushbutton as shown Ifcontac tor is not inserted in slot properly switch may stay on at all times Pushbutton Lamp Replacement HEWLETT hp PACKARD SALES amp SERVICE OFFICES AFRICA ASIA AUSTRALIA ANGOLA Telectra Empresa T cnica de Equipamentos El ctricos S A R L R Barbosa Rodrigues 42 1 DT Caixa Postal 6487 Luanda Tel 355156 Cable TELECTRA Luanda AUSTRALIA Hewrett Packard Australia y Lid 231 41 Joseph Street Blackburn Victoria 3130 PO Box 36 Doncaster East Victoria 3109 Tel 896351 Telex 31 024 Cable HEWPARD Melbourne Hewlett Packard Australia Pty Ltd 31 Bridge Street Pymble New South Wales 2073 Tel 4496566 Telex 21561 Cable HEWPARD Sydney Hewlett Packard Australia Pty Ltd 153 Greentili Road Parkside 5 A 5063 Tel 2725911 Telex 82536 Cabie HEWPARD Adelaide Hewiett Packard Australia 141 dd Highway Nedlands W
79. o procedures are given for making the test One using the 8413A display unit and the other using the 8414A display unit PROCEDURE Using 8413A Display Unit 1 Connect equipment as shown in setup above 2 Connect the coaxial short to the 8743A UN KNOWN port and depress the REF L pushbutton 3 Set the sweep oscillator to automatic sweep Adjust the sweeposcillator andnetwork analy zer controls to phase lock the network analyzer over the segment of the 8743A frequency range covered by the sweep oscillator Set the 8410A test channel gain to 20 dB Ad just the 8410A amplitude vernier and oscillo scope vertical position controls for a conven ient amplitude reference on the oscilloscope Draw the average of this trace on the CRT with a grease pencil Remove the coaxial short and replace with the Sliding load Increase the 8410A test channel gain by 30 dB Phase the sliding load noting oscilloscope display The average of this display must be below the reference level established in step 4 Repeat steps 2 through 6 for other frequency segments as necessary to cover the range of 2 0 to 12 4 GHz Figure 4 1 Performance Test Sheet 1 of 4 4 2 Model 8743A Section IV DIRECTIVITY TEST Cont SIGNAL SOURCE 2 0 12 4 GHz HP 8690 SERIES 3 Q Q Q e Q oS o SL IRF 8743A zn UNKNOWN PORT COAXIAL PROCEDURE Using the 8414 Dis
80. o contact outlet use a three prong to two prong adapter part num ber 1251 0048 andconnect the green wire on the adap ter to ground 2 19 BENCH OPERATION 2 20 The Model 8743A cabinet has plastic feet and a foldaway tilt stand for convenience in bench opera tion The standinclines the instrument enoughto make the panel features easier to see The plastic feet pro vide clearancefor air circulation and make the Model 8743A self aligning when stacked on other Hewlett Packard full rack width modular instruments 2 21 RACK MOUNTING 2 22 All necessary hardware and instructions are contained in the supplied rack mounting kit HP part number 5060 0775 Care must betaken to insure that the ambient operating temperature does not exceed 55 C 140 F 2 1 2 2 Model 8743A Section SECTION III OPERATION 3 1 INTRODUCTION 3 2 The combination of the Mode18743A Reflection Transmission Test Unit with the Mode1 11605A Flexi ble Arm a signal source and a compatible phase am plitude ratio indicator such as the HP Model 8410A Network Analyzer makes up a system for measuring reflection and transmission phase and magnitude from 2 0 to 12 4 GHz 3 3 The microwave circuit for areflectionor trans mission measurement is set up by pressing a front panel pushbutton or with remote contact closures 3 4 Acalibratedline stretcher with a digital indica tor is used to equalize the electrical length of the te
81. onnections to be made to the 8743A See Table 3 1 for wiring information Specifications Frequency Range 2 0 to 12 4 GHz Impedance 50 ohms nominal Reflection Coefficient UNKNOWN port 2 8 GHz lt 0 091 VSWR 1 2 8 12 4 GHz 0 13 VSWR 1 3 TRANSMISSION RETURN port REFL Measurement 0 13 VSWR 1 3 TRANS Measurement 0 20 VSWR 1 5 Coupler Directivity 30 dB Insertion Loss RF Input to REFERENCE output 30 dB nominal RF Input to UNKNOWN port 20 dB nominal UNKNOWN portto TEST output in Reflection mode 10 dB nominal TRANSMISSION RETURN port to TEST output in transmission mode 1 5 dB Maximum RF input 8743A damage level 2 W Connectors RF INPUT port Type female stainless steel 1 Compatible withconnectors whose dimensions con form to MIL C 39012 or MIL C 71 Microwave Switches Typical switching time 40 2Amphenol RF Division Danbury Connecticut Equivalent source reflection coefficient when used with 8410A Network Analyzer REFERENCE and TEST channel output ports mate with 72 connectors TRANSMISSION and UNKNOWN ports APC 72 sexless connectors REMOTE INPUT 36 pin female msec Estimatedswitchlifetime 1 millioncycles Reference Plane Extension 0 15 cm for reflec tion 0 to 30 em for transmission calibrated by dial indicator Indicator is adjustable for initial calibration Transmission Reflection Selection Manual by front
82. ower end of the pushbutton lens pops out as shown in B A B 2 Remove the pushbutton lens Place the hollow end of the bulb extractor tool over the bulb to be replaced and gently pull back The bulb should stick in the extractor and come out of its socket as the extractor is pulled back as shown in C C 1 1 3 Remove the old bulb from the hollow end of the extractor and insert the bulb into the hollow end Using the extractor to hold the new bulb insert the new bulb into the socket To separate bulb and extractor gently twist until it easily slips off the bulb 4 Replace the pushbutton lens by first positioning the tabs at the top of the lens into the top of the pushbutton and pressing the bottom of the lens into place as shown in D NOTE Only the pushbutton lens should be removed for bulb replacement If the pushbutton is inadvertently pulled out during replacement remove lens from the pushbutton Re insert the pushbutton into the front panel and push in until pushbutton snaps in place Remain der of procedure is the same as previously given Figure 3 12 Pushbutton Selector Bulb Replacement 3 15 section 3 25 The important precautions that apply to the re placement of inner conductor contact are these a Do not disassemble the connector b Do not apply more than slight inward pressure to the inner conductor c Do not apply ANY twisting force to the inner conductor d Do not attempt
83. p the 8743A Network Analyzer and Display Unit to calibrate for a reflection measurement connect a coaxial short to the 8743A UNKNOWN port Cycle the coaxial switches by alternately pressing the TRANS and REFL pushbuttons while observ ing the display for repeatability Determine the faulty switch as follows 1 Ifarepeatability problem occurred in both the REFLECTION and TRANSMISSION checks replace Test Port Relay Assembly HP Part No 08743 60009 2 If a repeatability problem occured in the RELFECTION check only replace 5 Unknown Port Relay Assembly HP Part No 08743 60011 3 If a repeatability problem occurred in the TRANSMISSION check only replace A7 Transmission Return Port Relay Assembly HP Part No 08743 60010 Insertion Loss Insertion loss problems are generally caused by a discontinuity in a connector or cable The indi cation that a problem may exist is an increase or decrease in the Network Analyzer s displayed magnitude at one or more frequencies during cali bration The Network Analyzer displays the ratio of reference channel to test channel power there fore a loss of power in the reference channel will appear on the display as an increase test channel power The direction of a spike in the displayed trace isolates the trouble to either the reference or test channel Generally a disconti nuity will show up at higher frequencies there fore troubleshooting should be done in X band and
84. phasing the load until the circle rotates about the center of the CRT See Figure 3 9 c Depress the 8414A beam center pushbutton The dot must be inside the outer circle Repeat steps 2 through 9 for other frequency segments as necessary to cover the range o 2 0 to 12 4 GHz Performance Test Sheet 2 of 4 4 3 Section IV REFLECTION COE OSCILLOSCOPE 06 Model 8743A FFICIENT TEST SWEPT FREQUENCY INDICATOR 1416 UNKNOWN PORT HP 8743A SIGNAL B SOURCE 2 12 4 GHz 8690 SERIES T e SLIDING IEE LOAD HP907A Lu mE ET EM l TRANSMISS IN MISSION HP 8I7A RETURN PORT TEST PORT 1 Use a Swept Slotted Line in the setup shown above with 8743A TEST port terminated in a low reflection 50 ohm termination to measure the reflection coefficient of the 8743A TRANSMISSION RETURN port from 2 0 to 12 4 GHz in both the transmission and reflection mode The maximum peak to peak oscilloscope display for each mode must not exceed 2 93 dB VSWR 1 4 Measure the UNKNOWN port equivalent source reflection coefficient as follows DESCRIPTION The equivalent source reflection coefficient is tested by measuring the change in magni tude of a maximum reflection when the phase of the reflection is varied The measured change in magnitude is the vector sum of coupler directivity and so
85. play Unit 1 Connect equipment as shown in setup above 2 Connect the coaxial short to the 8743A UN KNOWN and depress the RE FL pushbutton 3 Set the sweep oscillator to automatic sweep Adjust the sweep oscillator and network ana lyzer controls to phase lock the network ana lyzer over the segment of the 8743A frequency range covered by the sweep oscillator 4 Push and hold the 8414A BEAM CTR push button and adjust the centering controls to place the dot in the center of the polar display 5 Adjust the REFERENCE PLANE EXTENSION to collapse the trace to a dot or smallest cluster 6 Adjust the 8410A test channel gain and ampli tude vernier controls to place the dot or the center of the cluster at the outer graticule Figure 4 1 SWEEP REFERENCE HP 9074 SLIDING LOAD 10 NETWORK ANALYZER HP 8414A 957 Q HP 8411A TRANSMISSION RETURN PORT Remove the coaxial short and replace with the sliding load Increase the 8410A test channel gain by 30 Phase the sliding load noting the CRT display The average of this display must be inside the outer circle the swept display cannot be resolved satis factorily make single frequency measure ments as follows a Set the sweep oscillator to single frequency operation Select the frequency which cor responds to the point of greatest reflection on the 8414A display b Adjust the 8414A centering controls while
86. r level during calibration the same for transmission and reflection Also the combined electrical lengths of the 8492A and the 11605A makes the electrical length of the test channel in the transmission mode nearly equal to its length in the reflection mode This means that since the difference is small it is possible to calibrate for one mode of operation and switch to the other without recalibrating Model 8743A Table 3 1 Contact Closures for Remote Operation 3 18 REMOTE OPERATION 3 19 thirty six pin connector on the rear panel of the 8743A provides contacts for remote selection of transmissionor reflection measurements Only four of the thirty six pins are used The pins and their uses are given in Table 3 1 When remote manual select pin 17 is open and not connected to a remote control common pin 18 or 36 the 8743A is in the manual or front panel mode In this mode of operation the front panel pushbuttons are enabled and remote TRANS REFL select pin 24 is disabled When re mote manual select pin 17 is connected to a remote control common pin 18 or 36 the 8743A is in the remote mode In this mode of operationthe front panel pushbuttons are disabled and remote TRANS REFL select pin 24 is enabled allowing selection of trans mission or reflection measurements only through the remote input pin 24 Table 3 2 shows the signal re quirements for remote operation A typic
87. rated 8413A output 10 mv degree and the oscillo Scope vertical calibration to determine phase angle NOTE The phase display is the combination of linear phase due to electrical length and non linear phase shift Group delay can be determined fromthis display see HP Application Note 92 3 For single frequency measurements read magnitude and phase as follows a For magnitude note 8410A test channel gain settings Adjust test channelgainto returnthe 8413A meter indicationto zero The difference in test channel gain set tings is the transmission gain or loss in dB of the device under test b For phase adjust th e 8413A phase off set for an on scale meter indication on the most sensitive scale The phase angle is the algebraic sum of phase off set and meter indication Figure 3 4 Transmission Measurement Using Network Analyzer with 84132 Display Unit Sheet 2 of 2 3 7 Section III Mode1 8743A REFLECTION MEASUREMENT SIGNAL SOURCE 2 0 12 4 GHz NETWORK ANALYZER HP 8690 SERIES HP 8410A 8414 SWEEP REFERENCE Q Q Q OUT ooo NUBE oco O O i 8411 l HP 8743A oe 1 UNKNOWN TRANSMISSION PORT RETURN PORT COAXIAL SHORT Figure 3 5 Reflection Measurement Using Network Analyzer with 8414A Polar Display Unit Sheet 1 of 2 3 8 Model 8743A CALIBRATION DESCRIPTION Calibration consists of adjusting
88. rk the wires so they may be soldered to the proper terminals on the new switch Installation To install the 5 and A7 Assemblies 1 Assemble the three coaxial switches into one unit 2 Solder the white and green wires removed in step 8 of the removal procedure 3 Insert the A5 and 7 Assemblies into the 8743A as one unit Do not install mount ing screws 4 Connect cables W6 and W9 to the appropri ate switches and tighten each connector 5 Connect cable W7 to the Assembly and tighten connector 6 Install the large thin securing nut to the TEST output connector 7 Install the six coaxial switch mounting screws Insure that green and white wires are not routed or pinched between switches and mounting deck 8 Solder the wires removed in step 5 of the removal procedure matching wire colors to the wires previously installed 9 Perform the insertion loss troubleshooting procedure in Figure 4 2 If sharp power varia tions occur during any check vary the torque on each coaxial switch connector while observing the frequency response curve until power variation is minimum Model 8743A RF TROUBLESHOOTING Introduction 8743A RF troubles can be divided into two genera categories repeatability and insertion loss Repeatability problems are generally caused by the RF coaxial switches and inser tion loss problems are generally caused by connectors or cables Because the troubleshoot ing app
89. roach for each of these problems is dif ferent this service note discusses each category separately Repeatability NOTE Repeatability is a supplemental per formance characteristic and not an instrument specification Repeatability is the change in insertion loss when the coaxial switches are cycled and is normally not a factor in measurement accur acy The change in 87434 insertion loss when the coaxial switches are cycled is typically less than 0 2 dB When the equipment is calibrated in one mode of operation and reflection and transmission measurements are both made without recalibrating repeatability can degrade measurement accuracy For best accuracy the equipment should be calibrated and measure ments made in one mode of operation to keep insertion loss the same for both calibration and measurement Repeatability problems are generally due to the center conductor flipper inside the switch not making contact with the same pressure each time the switch is cycled To isolate a repeat ability problem to a single switch use the fol lowing procedure Transmission Check Setup the 8743A Net work Analyzer and Display Unit to calibrate for a transmission measurement connect a through section between the 8743A UN KNOWN and TRANSMISSION RETURN ports Cycle the coaxial switches by alter nately pressing the TRANS and REFL push buttons while observing the transmission display for repeatability Reflection Check Setu
90. st and reference channels for initial phase calibration A thumbwheel allows the digital indicator to be set to zero or to any desired reference For reflection measurements in cases where the measurement plane is not to be at the UNKNOWN port the line stretcher can be adjusted to extend the measurement plane up to 15 cm beyond the UNKNOWN port For transmission measurements the line stretcher can be used to de termine the total electrical length up to 30 cm of the device under test For either function additional line may be installed in place of the removable rigid coax link REFERENCE LINE on the rear panel 3 5 A special recess for the HP 8410A Network Analyzer s harmonic frequency converter permits direct connection to the 8743A withno increase in pack age dimensions 3 6 DESCRIPTION OF PANEL FEATURES 3 7 Front and rear panel controls connectors and indicators are described in Figures 3 1 and 3 2 In these figures the numbers on the panel illustrations match the description numbers 3 8 OPERATING PRECAUTIONS 3 9 MAXIMUM RF 3 10 Do not apply more than 2 watts of RF power to the rear panel RF INPUT Power in excess of 2 watts may damage the internal directional couplers When making transmission measurements using the 8410A Network Analyzer do not apply more than 50m W to the 8743A TRANSMISSION RETURN port More than 50 mW may damage the 8411A Harmonic Frequency Converter 3 11 MEASUREMENT PROCEDU
91. tact your nearest Hewlett Packard Sales and Service Office Addresses are pro vided at the back of this manual GE HEWLETT PACKARD REFLECTION TRANSMISSION TEST UNIT 8743A SERIALS PREFIXED 1226 This manual applies directly to HP Model 8743A Reflection Transmission Test Units having serial prefix number 1226 SERIAL PREFIXES NOT LISTED For serial prefixes above 1226 a Manual Changes sheet is included with this manual For serial prefixes below 1226 refer to the Appendix COPYRIGHT HEWLETT PACKARD COMPANY 1976 1400 FOUNTAIN GROVE PARKWAY SANTA ROSA CALIFORNIA 95404 U S A MANUAL PART NO 08743 90010 MICROFICHE PART NO 08743 90011 Printed JULY 1972 Table of Contents Model 8743A TABLE OF CONTENTS Section Page Section Page I GENERAL INFORMATION 1 1 3 6 Description of Panel Features 3 1 1 1 Description ES oe 1 1 3 8 Operating Precautions 3 1 1 5 Accessories Furnished 1 1 3 9 Maximum RF Power 3 1 1 7 Rack Mounting 1 1 3 11 Measurement Procedures 3 1 1 9 Thirty six Pin Male 3 13 Increased Accuracy for Connector sessies oe a oe bee 1 1 Reflection Measurements by 1 11 Accessories Available 1 2 Minimizing Directivity 1 12 Flexible Arm 1 2 3 12 1 14 Attenuator y 1 2 3 16 Increased Accuracy for 1 16 APC 7 Short 1 2 Trans
92. that the average of the trace falls on the zero trace position noted in step a above c Adjust oscilloscope vertical position for convenient amplitude reference d Disconnect oscilloscope vertical input from 8413A PHASE channel to simulate zero volts dc from 8413A Note trace position e Reconnect vertical input and adjust the 8410A PHASE vernier control so that the average of the trace falls on the zero trace position noted in step d above Section III f Adjust oscilloscope vertical position for a convenient phase reference To calibrate for single frequency measure ments perform the following Set the Sweep Oscillator for single fre quency operation b Adjust 8410A PHASE VERNIER for zero degree indication the 8413 Adjust 8410A test channel gainand ampli tude vernier controls fora 0dB indication on the 8413A MEASUREMENT l Insertthe device to betested betweenthe UN KNOWN port and the 10 dB attenuator 2 For swept frequency measurements read magnitude and phase as follows a For magnitude note8410A test channel gainsettings Adjust test channelgain to return oscilloscope display to reference obtained during calibration The differ ence in test channel gain settings is the transmission gain or loss in dB of the device under test b For phase adjust oscilloscope vertical sensitivity and position controls to view the swept phase display of the device under test Use the calib
93. then the instrument should be checked over the remaining operating range To isolate an inser tion loss problem perform the troubleshooting procedure in Figure 4 2 COAXIAL SWITCH REPLACEMENT PRO CEDURE Removal To remove the 5 and Assemblies 1 Remove the 8743A top and bottom covers 2 Remove circuit board assemblies Al and 3 Remove cable W7 as follows a Remove the large thin nut securing the TEST output connector to the sub deck b Disconnect W7 from the A6 Assembly using a 3 4 inch open end wrench and slide as much of the cable as possible through the hole in the sub deck 4 Loosen W6 and W9 s connectors to the 5 and assemblies using 3 4 inch open end wrench Section IV Step 1 Connect equipment as shown in Figure 4 2 Set sweep oscillator for maximum leveled power over frequency band of interest Press TRANS pushbutton Monitor TEST output frequency response Power should vary less than 2 dB from maximum to minimum Refer to response curve A YES Step 3 Disconnect through section from UNKNOWN port and press REFL pushbutton Monitor TEST output frequency response with UNKNOWN port open and shorted The average of the two traces Should vary less than 2 0 dB refer to response curve B and the maximum to minimum at any frequency equivalent source reflection should be less than 1 6 dB from 2 to 8 GHz or 2 3 dB from 8 to 12 4 GHz YES NO Response c
94. to repair contacts e Do not re use contacts CAUTION Inward pressure or twisting force applied to the inner conductor of the UNKNOWN port connector can render the Model 8743A in operative 3 26 Because of the above considerations contact removal should not be attempted with ordinary hand tools Only the Hewlett Packard self positioning hy podermic action contact extractor tool part number 5060 0236 should be used This tool exerts no ap preciable inward pressure and no twisting force on the inner conductor Instructions for removing contacts are supplied with the tool 3 27 No toolis required for installing a replace ment contact Insert the contact gently by hand ap plying only enough inward pressure to snap it into place Then check for proper installation by inspect ing the contact for even spacing of its four segments Also test for normal spring action by applying light inward pressure against the end of the contact with a pencil eraser As the pressure is released the con tact s spring action should cause it to move outward If not the contact is defective and should be replaced lpart of APC 7 Connector Tool Kit 11591A Model 8743A 3 28 COUPLING MECHANISMS 3 29 The coupling mechanism includes the coupling nut and the two piece coupling sleeve assembly shown in Figure 3 11 Both of these parts can be replaced without access to the inside of the Model 8743A and without disturbing either of the con
95. ue Star itd Bhandari House 7th amp Bth Floor 91 Nehru Place New Delhi 110 024 Tel 634770 amp 635166 Tetex 031 2463 Cable BLUESTAR Blue Star Ltd Blue Star House 11 7 Magarath Road Bangaiore 560 025 Tei 55568 Telex 043 430 Cable BLUESTAR Blue Star Lid Meeakshi Mandiram xxx 1678 pe Gandhi Rd Cochin 582 016 Tel 32069 32161 32282 Telex 0885 514 Cabie BLUESTAR Blue Star Ltd 1 1 117 1 Sarom Devi Road Secunderabad 500 003 Tel 70126 70127 Telex 015 459 Cable BLUEFROST Blue Star Ltd 234 Kodambakkam High Road Madras 600 034 Tei 82956 Telex 041 379 Cable BLUESTAR INDONESIA BERCA indonesia P T Box 496 Jkt Jin Abdu Muis 62 Jakarta Tel 349255 349886 Telex 46748 BERSIL JA Cable BERSAL BERCA Indonesia P T PO Box 174 Sby 23 Jin Jimerto Surabaya Tel 42027 Cable BErcacon ISRAEL Electronics Engineering Div of Motoroia israe Ltd 16 Kremenetski Street P 0 25016 Tel Aviv Tei 38973 Telex 33569 34164 Cable BASTEL Tel Aviv JAPAN Yokogawa Hewleti Packard Ltd Chuo Bidg 4th Floor 4 20 Nishinakayima 5 chome Yodogawa ku 5 Osaka 532 Tel 06 304 6021 Telex 523 3624 Yokogawa Hewiett Packard Ltd 29 21 Takaido Higashi 3 chome Suginami ku Tokyo 168 Tel 03 33 6171 Telex 232 2024 YHP Tokyo Cable TOK 5 724 Yokogawa Hewlett Pacxare Ltd Nakamo Bunding 24 Kam Sasapma cho Nakamura ku Nagoya 450 052 571 5171
96. urce reflection therefore the equivalent source reflection is actually less than specified Figure 4 1 Performance 4 4 PROCEDURE a Connect equipment to make a reflection measurement as shown in Figure 3 3 Connect a coaxial short such as the HP 11565A to the 8743A UNKNOWN port and depress REFL pushbutton Set the Sweep Oscillator to automatic sweep Adjust the Sweep Oscillator and Network Analyzer controls to phase lock the Network Analyzer over a full octave band in the 2 0 to 12 4 GHz range Disconnect oscilloscope vertical input from 8413 amplitude channel to simulate zero volts dc from 8413A Adjust trace position to the center of the CRT Reconnect vertical input and adjust 8410A test channel gain and amplitude vernier con trols so that the average of the trace falls on the zero trace position noted in step d Test Sheet 3 of 4 Mode1 8743A Section IV REFLECTION COFFICIENT TEST Greose Pencilled Peak To Peak Amplitude dB Increase oscilloscope vertical sensitivity to obtain a maximum amplitude CRT pre Sentation Draw the trace on the face of the CRT with a grease pencil Remove the coaxial short from the UNKNOWN port and grease pencil the trace of the open circuit on the CRT Determine the maximum peak to peak amp litude as shown above 1 Set the Sweep Oscillator to manual op eration and adjust Sweep Oscillator manual frequency control and
97. urve indicates a relative increase in power at one or more frequencies Disconnect W3 rear panel external REFERENCE LINE Connect crystal detector W2J1 rear panel connector for REFERENCE LINE closest to side panel Monitor TEST port frequency response Power should have no sharp spikes or holes and should vary less than about 2 dB from maximum to minimum YES NO Troubleshoot W2 and associated connectors See Note 2 Troubleshoot W3 W4 W5 and associated connec tors See Notes 1 and 2 Response curve indicates a relative decrease in power at one or more frequencies Troubleshoot Flexible Arm W7 W8 W9 6 AT and associated connectors Note W7 W8 and A6 are common to two RF paths therefore perform step 3 If step 3 checks OK the trouble is most likely the Flexible Arm W8 or A7 See Note 2 If the maximum to minimum at any frequency is greater than 1 6 dB from 2 to 8 GHz or 2 3 dB from 8 to 12 4 GHz replace DC1 and its 10 dB attenuator See Note 5 If the average of the two traces is greater than 2 dB troubleshoot W6 W7 W8 A5 and A6 and associated connectors If step 2 checked OK trouble is most likely W6 or A5 If both step 2 and step 3 indicate a trouble connect the thermistor mount to the UNKNOWN port and monitor the frequency response If the response curve indicates a rela tive decrease trouble is most likely W8 If the UNKNOWN port frequency response is OK the trouble is most

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