Agilent E1472A Service Manual

Agilent 75000 SERIES C

E1472A 50 Ohm RF Multiplexer E1473A 50 Ohm RF Multiplexer Expander E1474A 75 Ohm RF Multiplexer E1475A 75 Ohm RF Multiplexer Expander

Service Manual

*E1472-90011*

E1472-90011

Manual Part Number: E1472 -90011 Printe d: Augus t 2006 Edition 2 Rev 2

Printed in Malaysia E0806

Certification

Agilent Technologies certifies that this product met its published specifications a t the time o f shipment from the factory. Agilent Technologie s further certifies tha t its calibr ation measure ments are tracea ble to the Unit ed States Nati onal Institu te of Stand ards and Technology (formerly Nati onal Bureau of Standards), to the ex tent allowed by that organizat ion’s calibrat ion facility , and to the calibration facilities of other International Standards Organization members.

Warranty

This Agilent Technologies product is warranted against defects in materials and workmanship for a period of one (1) year from date of shipment. Duration and conditions of warranty for this product may be superseded when the product is integrated into (becomes a part of) other Agilent products. During the warranty period, Agilent Technologies will, at its option, eithe r repair or r ep la ce p ro d uc ts wh ich prove to be def ec t ive.

For warrant y service or repair, t hi s product m ust be retu rned to a service facility designated by Agilent Technologies. Buyer shall prepay shipping charges to Agilent and Agil ent shall pay shipping charge s to return the product to B uyer. However, Buye r sha l l pay all shipping charges, duties, and taxes for product s re t urned to Agil ent fr om another cou nt ry.

Agilent warrants that its software and firmware designated by Agilent for use with a product will execute its programming instruc tions when properly installed on that product. Agilent does not warrant that the operation of the product, or software, or firmware will be uninterrupt ed or error free .

Limitation Of Warranty

The foregoi ng warranty shall not apply to defects res ul ting from improper or in adequate maintenanc e by Buyer, Buyer-supplied products or interfacing, unauthori zed modific ation or mis use, operat ion outsid e of the envi ronmenta l specific ations for the prod uct, or improper site preparation or maintenance.

The design and implementation of any circuit on this product is the sole responsibility of the Buyer. Agilent does not warrant the Bu yer ’s circuitry or malfunctions of Agilent products that result from the Buyer’s circuitry. In addition, Agilent does not warrant any damage that occurs as a r es ul t of th e B uyer’s circuit or any defects tha t res ul t fro m Bu yer -s upplied products.

NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. Agilen t SPECIFICALLY DISCL AIMS THE IMPLIED WARRANTI ES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

Exclusive Remedies

THE REMEDIES PROVIDED HEREIN ARE BUYER’S SOLE AND EXCLUS IVE REMEDIES. Agilent SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER LEGAL THEORY.

Notice

The information contained in this document is subject to change without notice. Agilent Technologies MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS MATERIAL, INCL UDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Agilent shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance or use of this material. This document contains proprietar y information whi ch is protected by copy right. All rights are reserved. No part of this docume nt may be phot ocopied, rep roduced, or translat ed t o anot her l anguag e wi thout the prior w ritten consent of Agilent Technologies, Inc. Agilent assumes no responsibility f or the use or reliability of its software on equipment that is not furnished by Agilent.

U.S. Government Restricted Rights

The Software and Documentation have been developed entirely at private expense. They are delivered and licensed as "commercial computer software" as defined in DFARS 252.227- 7013 (Oct 1988), DFARS 252.211-7015 (May 1991) or DFARS 252.227-7014 (Jun

1995), as a "com mercial item " as defined in FAR 2.101(a), or as "Restric ted computer software" as define d in FAR 52.227-19 (Jun 1987)(or any equival ent age ncy reg ulati on or contra ct cl ause ), which eve r is appl icab le. You hav e only t hose r ight s provide d for suc h Software and Documen ta t io n by t he applicabl e FA R or DF A R S cl ause or the Agilent standa rd sof tw a re agreement for the product i nvolved.

Agilent E1472A/73A/74A/75A 50W/75W RF Multiplexers/Expanders Module Service Manual

Edition 2 Rev 2

Agilent E1472A/73A/74A/75A 50W/75W RF Multiplexers /Ex panders Module Service Manual 1

Printing H is tory

The Printing History shown below lists all Editions and Updates of this manual and the printing date(s). The first printing of the manual is Edition 1. The Editi on number incremen ts by 1 whenever the manua l is r ev is ed . Up dates, which are issue d bet wee n Ed itio n s, contain replacement pages to correct the current Edition of the manual. Updates are numbered sequentially starting with Update 1. When a new Edition is crea ted, it cont ains all the Upda te i nfor mat ion for the p revious Ed ition. E ach ne w E dition or U pdat e a lso incl udes a re vised copy of this prin ti ng history p age. Man y pr oduct updat es or revis i ons do not require manual chan ges and, con versely, m anual corrections may be done without accompanying product changes. Therefore, do not expect a one-to-one correspondence between product updates and manual updates.

Edition 1 (P ar t Num ber E1472-90010). . . . . . . . . . . . . . . . . . . . . . . August 1992

Edition 2 (P ar t Num ber E1472-90011). . . . . . . . . . . . . . . . . . . . . . . . . May 1996

Edition 2 Rev 2 (Pa rt N um ber E1472-9001 1) . . . . . . . . . . . . . . . . . August 2006

Safety Symbols

Instructi on manual sy mbol affixed to product. Indic ates th a t the user must refer to th e manual for specific WARNING or CAUTION informatio n to avoi d personal injury or damage to the pr oduct.

Alternating current (AC).

Direct current (DC).

Indicates t he field wir ing termina l that must be connec ted to earth gr ound before op erating the equipment—protects against electrical shock in case of fault.

Frame or chassis ground terminal—typically connects to the equipment’s metal frame.

WARNING

CAUTION

Indicate s ha zardous volta g e s.

Calls a tt e ntion to a procedur e, practice , or condition that could cause bodi l y i njury or death.

Calls attention to a proce dur e, pra ct i ce, or condition that could possibly cause damage to equipme nt or pe rm anent loss of dat a.

WARNINGS

The following general safety precautions must be observed during all phases of operation, service, and repair of this product. Failure to comply with these prec autions or w ith speci fic warnings elsewh er e in this manual vi ol at es safety stand ar d s of desig n , manufacture, and intended use of the product. Agilent Technologies assumes no liability for the customer’s failure to comply with these re qu i rements.

Ground the equipment: For Safety Class 1 equipment (equipment having a protective earth terminal), an uninterruptible safety earth

ground must be provided from t he m ains power sour ce to the product i nput w iring termi nal s o r su ppl i ed power cable.

DO NOT operate the product in an explosiv e at mospher e or in the presence of flammable g ases or fume s.

For continued protection against fire, replace the line fuse(s) only with fuse(s) of the same voltage and current rating and type. DO NOT use re pai r ed fuses or short -c i rc uited fuse hol der s.

Keep away fr om live circuit s: Ope ra t in g per sonnel must not remove equipment covers or shi el ds. Procedure s involving the re m oval of covers or shields are for use by service-trained personnel only. Under certain conditions, dangerous voltages may exist even with the equipmen t switch ed off. To avoid da ngerou s elec trica l shoc k, DO NOT perform proced ures invo lvin g cover or shield re mova l unless you are qualified to do so.

DO NOT operate damaged equipment: Whenever it is pos sible that the safety protection feat ures built into this pro duct have been impaired, either through physical damage, excessive moisture, or any other reason, REMOVE POWER and do not use the product until safe oper at i on can be verified by service-tra ined pers onnel. If ne cessary, r et urn the product to an Agilent Technologies Sale s and Servi ce Office for service and repair to ensure that safety features are maintained.

DO NOT serv ice or adjust al one: Do not at tempt inte rnal ser vice or adjus tment unles s anot her per son, ca pabl e of renderi ng first aid and resuscitation, is present.

DO NOT substitute parts or modify equipm ent: Because of the danger of introducing additional hazards, do not install substitute parts or perform any unauthorized modification to the product. Return the product to an Agilent Technologies Sales and Service Office for service and repair to ensure that safety features are maintained.

2 Agilent E1472A/73A/74A/75A 50W/75W RF Multiplexers/Expanders Module Service Manual

DECLARATION OF CONFORMITY

According to ISO/IEC Guide 22 and CEN/CENELEC EN 45014

Manufacturer’s Name:

Agilent Technologies, Incorporated

Manufacturer’s Address: Measurement Product Generation Unit

815 14th ST. S.W. Loveland, CO 80537 USA

Declares, that the product

Product Name: Model Number:

50 Ohm RF Multiplexer and Expander E1472A/E1473A

Product Options: This declaration covers all options of the above product(s).

Conforms with the following European Directives:

The product herewith complies with the requirements of the Low Voltage Directive 73/23/EEC and the EMC Directive 89/336/EEC and carries the CE Marking accordingly

Conforms with the following product standards: EMC Standard

IEC 61326-1:1997+A1:1998 / EN 61326-1:1997+A1:1998 CISPR 11:1997 +A1:1997 / EN 55011:1998 IEC 61000-4-2:1995+A1:1998 / EN 61000-4-2:1995 IEC 61000-4-3:1995 / EN 61000-4-3:1995 IEC 61000-4-4:1995 / EN 61000-4-4:1995 IEC 61000-4-5:1995 / EN 61000-4-5:1995 IEC 61000-4-6:1996 / EN 61000-4-6:1996 IEC 61000-4-11:1994 / EN 61000-4-11:1994

Limit

Group 1 Class A 4kV CD, 8kV AD 3 V/m, 80-1000 MHz

0.5kV signal lines, 1kV power lines

0.5 kV line-line, 1 kV line-ground 3V, 0.15-80 MHz I cycle, 100%

[1]

Canada: ICES-001:1998 Australia/New Zealand: AS/NZS 2064.1

Safety

IEC 61010-1:1990+A1:1992+A2:1995 / EN 61010-1:1993+A2:1995 Canada: CSA C22.2 No. 1010.1:1992 UL 3111-1:1994

Supplemental Information:

[1]

The product was tested in a typical configuration with Agilent Technologies test systems.

September 5, 2000

Date Name

Quality Manager

Title

Authorized EU-representative: Agilent Technologies Deutschland GmbH, Herrenberger Straβe 130, D 71034 Böblingen, Germany

For further information, please contact your local Agilent Technologies sales office, agent or distributor.

Agilent E1472A/73A/74A/75A 50W/75W RF Multiplexers/Expanders Module Service Manual 3

DECLARATION OF CONFORMITY

According to ISO/IEC Guide 22 and CEN/CENELEC EN 45014

Manufacturer’s Name:

Agilent Technologies, Incorporated

Manufacturer’s Address: Measurement Product Generation Unit

815 14th ST. S.W. Loveland, CO 80537 USA

Declares, that the product

Product Name: Model Number:

75 Ohm RF Multiplexer and Expander E1474A/E1475A

Product Options: This declaration covers all options of the above product(s).

Conforms with the following European Directives:

The product herewith complies with the requirements of the Low Voltage Directive 73/23/EEC and the EMC Directive 89/336/EEC and carries the CE Marking accordingly

Conforms with the following product standards: EMC Standard

Limit

Group 1 Class A 4kV CD, 8kV AD 3 V/m, 80-1000 MHz

0.5kV signal lines, 1kV power lines

0.5 kV line-line, 1 kV line-ground 3V, 0.15-80 MHz I cycle, 100%

[1]

Canada: ICES-001:1998 Australia/New Zealand: AS/NZS 2064.1

Safety

IEC 61010-1:1990+A1:1992+A2:1995 / EN 61010-1:1993+A2:1995 Canada: CSA C22.2 No. 1010.1:1992 UL 3111-1:1994

Supplemental Information:

[1]

The product was tested in a typical configuration with Agilent Technologies test systems.

September 5, 2000

Date Name

Quality Manager

Title

Authorized EU-representative: Agilent Technologies Deutschland GmbH, Herrenberger Straβe 130, D 71034 Böblingen, Germany

For further information, please contact your local Agilent Technologies sales office, agent or distributor.

4 Agilent E1472A/73A/74A/75A 50W/75W RF Multiplexers/Expanders Module Service Manual

Agilent 75000 Series C Service Documentation

Suggested Sequence to Use Manuals

Manual Descriptions

Series C Installation and Getting Started Guide. This manual contains step -by-step instructions for all aspects of plug-in module, mainframe , an d co mm a nd m odule installat ion . T hi s gu ide also contains introductory prog ra mm i ng information and examples.

Command Module User’s Manual. This manual conta i ns programming information for the Command Module , a nd general programming info rm at io n for instruments ins talled in the mainframe.

Mainframe User’s Manual. This manual contains installation information to prepare the mainframe for use and shows how to install plug-in modules.

Plug-In Module User’s Manuals. These manuals con ta in plug-in module pro gramming and configuration in form ation. Each manua l c ont a ins programming e xa mples and a complete SCPI comm a nd reference for t he plug-in module.

Plug-In Module Service Manuals. These manuals contain plug-in module service information. Each manual contains information for exchangin g the m odul e and/or orderi ng re placeable parts. Depending on the module, information and procedure s fo r func t ional verifica ti on, ope ra ti on ve rification, pe rformance veri fication, adj us tment, troublesh oot ing , a nd repair are also provided.

Agilent E1472A/73A/74A/75A Service Manual 5

What’s in this Manual

Manual Overview

This manual shows how to service th e Agile nt E1472A/E1474A RF Multiple xe rs and the Agilent E1473A/E147 5A RF Multiplexer E xpa nde rs. Consult the Agile nt E1472A/73A User’s Manual or the Agilent E1474A/75A User’s Manual for additional information on in sta lling, configuring, and oper a ting the module s. Consult the app ro pr ia te ma inframe or comm a nd module user’s manual for information on configuring and operating the mainframe .

Manual Content

Chap Title Content

General Information

Verification Tests

Replaceable Parts

Service Procedures to aid in fault isolation and repair.

Provides a basic description and lists the test equipment required for service.

Functional verification, operation verific ation, and performance verification tests.

Replaceable parts lists and illustrations.

6 Agilent E1472A/73A/74A/75A Service Manual

Notes

Agilent E1472A/73A/74A/75A Service Manual 7

Notes

8 Agilent E1472A/73A/74A/75A Service Manual

Table of Contents

Chapter 1 — General In f or mation

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Relay Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

End-of-Life Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Replacement Strategy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Warnings and Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Inspection/Shipping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Initial Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Shipping Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

RF Multiplexer/Expander Description . . . . . . . . . . . . . . . . . . . . . . . . . 18

Agilent E1472A / E1473A Descript io n . . . . . . . . . . . . . . . . . . . . . . . 18

Agilent E1474A / E1475A Descript io n . . . . . . . . . . . . . . . . . . . . . . . 19

Multiplexer/Expander Specifications . . . . . . . . . . . . . . . . . . . . . . . . 19

Multiplexer/Expander Serial Numbers . . . . . . . . . . . . . . . . . . . . . . . 19

Multiplexer/Expander Options . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Test Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

CLIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Recommended Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Chapter 2 — Verification Tes t s

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Test Conditions/Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Performance Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Verification Test Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Multiplexer Functional Verification . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Expander Functional Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Operation Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Performance Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Making Test Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Test 2-1: VSWR Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Agilent E1472A/73A/74A/75A Service Manual 9

Performance Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Test Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Measurement Uncertainty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Test Accuracy Ratio (TAR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Chapter 3 — Replaceable Parts

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Replaceable Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Exchange Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Chapter 4 — S e rvic e

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Repair Strategy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Service Aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Troubleshoot in g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Identifying the Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Testing the Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Isolating to an Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Self-test Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Repair/Maintenance Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

ESD Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Soldering Printed Circuit Boards . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Post-Repair Safety Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Appendix A — Verification Tests - C Programs

Functional Verification Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Example: Multiplexer Self Test . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Example: Expander Self Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Performance Verification Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Example: VSWR Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

10 Agilent E1472A/73A/74A/75A Service Manual

Chapter 1

General Information

Introduction This manual contains information requ ir e d to test, troub le shoot, and rep ai r

the Agilent E1472 A 50 Ohm R F Mul ti pl ex er, the Agilent 1473A 50 Ohm RF Multiplexe r Expa nde r , the Agilent E1474A 75 Ohm RF Mul tiplexer, and the Agilent E1475A 75 Ohm RF Multipl ex er Exp an de r (see Fig ur es 1-1 and 1-2).

Figure 1-1. Agilent E1472A/E1474A RF Multiplexers

Agilent E1472A/73A/74A/75A Service Manual General Information 11

Figure 1-2. Agilent E1473A/E1475A RF Multiplexer Expanders

Relay Life Electromechanical relays are subject to normal wear-out. Relay life depends

on several factors . Th e ef fects of loading and switching frequenc y a r e briefly discuss ed bel ow:

Relay Load. In general, highe r powe r switching reduces relay life. In addition, capa c it ive /inductive loads a nd high inrush curr en ts (e .g ., whe n turning on a lam p or motor) reduce relay l if e . Exceeding the specified

maximum inputs can cause c atastrophic failure.

Switching Frequency. Relay contacts heat up when switched. As the switching frequency increases, the contacts have less time to dissipate heat. The resulting increase in contact temperature reduces relay life.

12 General Information Agilent E1472A/73A/74A/75A Service Manual

End-of-Life

Detection

A preventive maintenance routine can prevent problems caused by unexpected rela y f ai lu re. The en d of the li fe of a rela y c an be determined using one or more of the thr e e methods described below. The best met hod (or combination of methods), as well as the failure criteria, depends on the applicatio n in which the relay is used.

Contact Resistance. As the relay begins to wear out , i ts contact resistan ce will increase. When the resistance exceeds a pre-determined value, the relay should be replaced. Typically, a relay should be replaced when the contact resistance exce eds 1.0 Ohm.

Stability of C ontact Resistance. The stability of the contact resistance decreases with age. Using this method, the contact resistance is measured several (5-10) times, and the variance of the measurements is determined. An increase in the variance indicates deteriorating performance.

Number of Operations. Alternatively, relays can be replaced after a predetermined number of contact closures. How ever, this method requires knowledge of the applied load and life specifications for the applied load. For the Agilent E1472A/73A/74A/75A, maximum relay life is specified at 5 X 10 at the maximum rated load.

operations with no load and 105 operations

Replacement

Strategy

CAUTION

NOTE

The replacement strategy also depends on the application. If all of the relays see similar loads and switching frequencies, the entire circuit board can be replaced when the end of life approaches. The sensitivity of the application should be weighed against the c ost of r eplacing rel ays with some useful life remaining. In general, individual r elay r epl acement is not recommended for the Agilent E1472A or Agilent E1474A RF Multiplexers.

The RF relays in these multiplexers are high-mass, high-pin-count devices. A solder pot is recommended for removal or replacement. If a solder pot is not available, a RF surface mount soldering iron should be used. Use of standard soldering equipment will damage the relay and PC board. Damage to the PC board or relays cause d by improper soldering techniques is not covered by the product’s warranty.

Relays that wear out normally or fai l due to misuse should not be considered defective and are not covered by the product’s warranty.

Agilent E1472A/73A/74A/75A Service Manual General Information 13

Safety Considerations

This product is a Safet y Class I instrument that is provide d wit h a protective earth terminal when instal le d in the main f r a me. The in strum e n t, ma in f r ame, and all relate d document at ion should be rev ie w e d fo r fa miliarizat ion with safety markings and instruc tions before ope r a tion or service.

Refer to the WARNINGS page (page 2) in this manual for a summary of safety inform at ion. Safety infor mation for t esting and service fo llows and is also found throughout this manual.

Warnings and

Cautions

WARNING

This section co nta i ns W A RNINGS which must be followed for your protection and C AUTIONS whi ch must be follo w ed to avoid damage to the equipment when performing instrument maintenance or repair.

SERVICE-TRAINED PERSONNEL ONLY. The information in this manual is for service-trained personnel who are familiar with electronic circuitry and are aware of the hazards involved. To avoid personal injury or damage to the instrument, do not perform procedures in this manual or do any servicing unless you are qualified to do so.

CHECK MAINFRAME POWER SETTINGS. Before applying power, verif y th at the mainf rame setting ma tch e s the line voltage and that the correct fuse is installed. An uninterruptible safety earth ground must be provided from the main power source to t he suppl ie d po we r co rd set.

GROUNDING REQUIREMENTS. Interruption of the protective (grounding) conductor (inside or outside the mainframe) or disconnecting the protective earth terminal will cause a potential shock hazard that could result in personal injury. (Grounding one conductor of a two-conductor outlet is not sufficient protection.)

IMPAIRED PROTECTION. Whenever it is likely that instrument protection has been impaired, the mainframe must be made inoperative and be secured against any unintended operation.

REMOVE POWER IF POSSIBLE. Some procedures in this manual may be performed with power supplied to the mainfr a me while pr ot e ct iv e covers ar e r em o ve d . Ener gy available at many points may, if contacted, result in personal injury. (If maintenance can be performed without power applied, the power should be removed.)

14 General Information Agilent E1472A/73A/74A/75A Service Manual

WARNING

USING AUTOTRANSFORMERS. If the mainframe is to be energized via an aut otransf or mer (for voltage reduction) ma ke sure the common terminal is connected to neutral (that is, the grounded side of the main’s supply).

CAPACITOR VOLTAGES. Capacitors inside the mainframe may remain charged even when the mainframe has been disconnected from its source of supply.

USE PROPER FUSES. For continued protection against fire hazard, replace t he line fuses only with fuses of th e same current rating and type (such as normal blow, time delay, etc.). Do not use repaired fuses or short-circuited fuseholders.

SHOCK HAZARD. Only service-trained personnel who are aware o f th e ha z ar d s involve d should in stall, rem o ve , o r confi gu re the mu l ti p lexer or ex p a nd e r . B ef ore you rem ove any installed module, disconnect AC power from the mainframe and from other modules that may be connected to the multiplexer or expander.

CHANNEL WIRING INSULATION. All channels that have a common connection must be insulated so that the user is protected from electrical shock. This means wiring for all channels must be insulated as though each channel carries the voltage of the highest voltage chann el.

CAUTION

MAXIMUM INPUTS. The maxi m um voltage that can be applied to any terminal is 42 V Pe ak (an y cen ter or chassis to any other center of chassis). The maximum current per channel or common is 1 A DC or AC RMS. The maximum power that can be applied to any channel or common is 24 W or 24 VA.

STATIC ELECTRICITY. Static electricity is a major cause of component failure. To prevent damage to the electrical components in the multiplexer or expander, observe anti-static techniques whenever working on the device.

RELAY REMOVAL. The RF relays used in these multiplexers are high-mass, high-pin-count devices. Individual relay removal is not recommended. A solder pot is required for removal or replacement. Use of standard soldering equipment will cause damage to the relay and PC board.

Agilent E1472A/73A/74A/75A Service Manual General Information 15

Inspection/ Shipping

This section contains initial (inco mi ng) inspection an d shipping guidelines for the multiple xe r /e xpander module s.

Inspection

WARNING

Initial

Use the steps in Fi gure 1- 3 as guidelines to pe r fo rm initial inspe c tion of one of the modules. Ve ri fic a ti on Te sts are optional .

To avoid possible hazardous electrical shock, do not perform electrical tests if there are signs of shipping damage to the shipping container or to the instrument.

Notify Agilent and carrier.

Notify Agilent

Return to Agilent

Figure 1-3. Initial (Incoming) Inspection Guidelines

16 General Information Agilent E1472A/73A/74A/75A Service Manual

Shipping

Guidelines

Follow the step s in Figure 1-4 to re tur n one of the mult iplexer/expander modules to a Agile nt Technologi es Sale s a nd Su ppor t Office or Serv ic e Center.

1 Prepare the Multiplexer

• Remove user wiring from terminal block

• Attach tag to module/pod that identifies

- Owner

- Model Number/Serial Number

- Service Required

• Place tagged device in approved anti-static bag

2 Package the Multiplexer

• Place packaged multiplexer in shipping carton*

• Place 75 to 100 mm (3 to 4 inches) of shock-

absorbing material around the multiplexer.

• Seal the shipping carton securely.

• Mark the shipping carton FRAGILE.

3 Ship the Multiplexer to Agilent Technologies

• Place address label on shipping carton

• Send carton to Agilent Technologies

Figure 1-4. Packaging/Shipping Guidelines

* We reco m m end that you use t he same shippi ng materials as those use d i n factory packaging (avail a b l e from A g i l ent Technologi es ).

For other (com m ercially-available ) sh ipping mate rial s, use a double wall-carton with mini m u m 2. 4 MPa (350 psi) test .

Agilent E1472A/73A/74A/75A Service Manual General Information 17

Environment The recommended operating environment for the multiplexers/ expanders is:

Environment Temperature Humidity

Operating 0

C to +55oC <95% relative (0oC to +40oC)

RF Multiplexer/ Expander Description

NOTE

Agilent

E1472A/E1473A

Description

Storage and Shipment

The Agilent E1472A a nd E1474A RF Multipl ex er modules are "instruments" in the slots of a VXIbus mainframe. Each module is assigned an error queue, input an d output buffers, an d a sta tus register.

Instruments a re base d on the logical ad dre sse s of the plug-in modules. See the Agilent 75000 Series C Instal lation and Getti ng Started Guide to set the addresses to create an instrument .

The Agilent E1472A 50 Ohm RF Multiplexe r an d the Agi le nt E1473A 50 Ohm RF Multiplexer Expander are VXI bus C-Size register-based products. The Agilent E1472A RF Multiplexer and the Agilent E147 3A RF Multiplexer Expa nder each provide six banks of 4:1 swit c hing. Inputs and outputs for eithe r module use 50 Ohm SMB con ne cto rs.

-40

C to +75oC <95% relative (0oC to +40oC)

The multiplexer and each multiplexer expander consists of six banks of channels (bank 0 through bank 5) to fo rm six 4:1 multiplexers. Each channel in a bank is connected to COM when the channel is CLOSed. Following power-on, power off, or a card reset, the first channel in each bank is connect e d to C O M.

Channel numberi ng i s in the form bc, where b is the bank numbe r (from 0 to

5) and c is the channel number (from 0 to 3). For example, following a card reset, channel 20 is closed (that is, channel 0 in bank 2 is connected to COM

20).

The Agilent E1472A RF Multiplex er can con trol up to two addit ional expander module s f or up to e ighteen banks o f 4:1 swi tc hing. The expander modules can be eithe r the Agilent E1473A 50 Ohm RF Multiplex er Expander modul e or the Agilent E1475A 75 Ohm RF Multiplexe r Ex pa nde r module.

18 General Information Agilent E1472A/73A/74A/75A Service Manual

The Agilent E1473A RF Multiplexer Expander Module ca n be inser ted in a C-Size VXI bus mainframe next to the multiplexer, or can be located up to eight meters away from the multiplexer using remote expander cables. Locating the expander module close to the external device keeps connecting cable lengths to a minimum, thereby reduci ng the possibility of cross-ta l k and insertion loss of high frequency signals.

Agilent

E1474A/E1475A

Description

Multiplexer/

Expander

Specifica tio n s

Multiplexer/

Expander

Serial Numbers

The Agilent E1474A 75 Ohm RF Multiplexe r an d the Agi le nt E1475A 75 Ohm RF Multiplexer Expander are identical in operation to the Agilent E1472A/E1473 A des cri be d ear li e r in this chapter wit h the exc ep tion of the characteristic impedance of the RF channels.

Inputs and outputs for either modu le use spe c ia l 75 Oh m SM B conne c to rs . The special connectors and their mating connectors are listed in the Agilent E1474A/E1475A RF M ul ti plexer/Expander User’s Manual .

Specification s are listed in Appendi x A of the Agilent E1472A/E1473A RF

Multiple x er/RF Multipl e xer Expander User’s Manual and the Agilent E1474A/E1475A RF Mul ti pl exer/RF Multiplexer Expander User’s Manual.

These specifications are the performance standards or limits against which the modules may be te ste d.

Devices covered by this manual are identified by a serial number prefix listed on the title page. Agilent Technologies uses a two-part serial number in the form XXXXAYYYYY, where XXXX is the serial prefix, A is the country of origin (A=USA), and YYYYY is the serial suffix. The serial number prefix identifies a series of identical instruments. The serial number suffix is assig ne d se que ntially to each instrument . The serial number pla te is located on the right-hand sh ie l d ne ar the backplane connectors.

Agilent E1472A/73A/74A/75A Service Manual General Information 19

Multiplexer/

Expander

Options

The following cables are availabl e from Agilent Technol ogi e s fo r use wi th the multipl e xe r/ e xpa nde r. For other cable lengt hs a nd c onfigurations, contact your Agilent Technol ogi e s sa le s of f ice .

Agilent PN Cable

E1473-80002 Remote Exp ande r Cabl e Ki t to rem ot e mo unt eith er the Agi lent

E1473A or Agilen t E14 75A next to the DUT. Cables ar e 0. 8 Me te rs long and can be dai sy ch ai ned up to 8 Meters

E1472-61601

8120-5629 Right-angle to righ t-angle female SMB conn ect or (125 mm) 8120-5091 Straight to strai ght fe ma le SMB connector (125 mm) 8120-5609 Right-angle fem ale t o bul khead mount male SMB co nnector (175 mm) 8120-5614 Right-angle fem ale S M B to BNC f em ale connector (175 mm)

8120-5591 Right-angle to righ t-angle female SMB conn ect or (125 mm) 8120-5584 Straight to strai ght fe ma le SMB connector (125 mm) 8120-5580 Right-angle fem ale t o bul khead mount male SMB co nnector (175 mm) 8120-5619 Right-angle fem ale S M B to BNC connector (175 mm)

RMD Cable (3-to-1 C abl e) . Two cables ar e re qui red to oper at e one or more expander mo dul es.

50 Ω Cables

75 Ω Cables

Test Kit A test kit is availa ble from Agilen t Te c hnol ogies for use in the Per for ma nc e

Verification tests of the Agilent E1474A/E1475A 75 Ω RF Multiplexer/Expander. Order Agil e nt pa r t nu mbe r E1474-80000. See Tabl e 1-1 for kit parts.

CLIP A CLIP (Component Level Information Packet) is available for the Agilent

E1472A/E1473 A/E1474A/E1475A RF Mul ti ple xe r s/ Expa nders (order Agilent part nu mbe r E1472-90033). Th is C LI P contains component loca tors, schematic diagra ms, and detailed part s lists.

20 General Information Agilent E1472A/73A/74A/75A Service Manual

Recommended Test Equipment

Table 1-1 list s the te st equipment recommended f or testing and servi cing the module. Essential requirements for each piece of test equipment are described in the Requirements column. Other equipment may be substituted as long as it meets the requirements shown in the Requirements column.

Table 1-1. Recommended Test Equipment

Instrument Requirements Recommended

Model

Controller, GPIB GPIB compatibility as defined by IEEE Standard

488-1988 and the identical ANSI Standard MC1.1: SH1, AH1, T2, TE0, L2, LE0, SR0, RL0, PP0, DC0, DT0, and C1 , 2, 3, 4, 5.

Mainf rame Compatible with multiplexer/expander E1401B/T or E142 1B

Command Module Compatible with mu ltiplexer/expander E1405A/B or

HP 9000 Series 300 or IBM Compatible PC with BASIC

(requires E 1405A/B or E1406A)

E1406A

Network Analyzer VSWR from 10 MHZ to 3 GHz. Agilent 8753C

S-Parameter Test Set Compatible with Agilent 8753C , single port

50 Ω for Agilent E1472A/E1473A 75 Ω for Agilent E1474A/E1475A

Adapters and Cables

E1472A/E1473A 50 Ω

APC-7-to-SMA (female) SMA-to-SMA cable (male-male) SMA -to- SMB (female-female) SMB LOAD(female) SMB SHORT (male) SMB Feedthrough (male-male)

Agilent 85046A for Agilent E1472A/E1473A or Agilent 85046B for Agilent E1474A/1475A

50 Ω impedance

Agilent PN 11534A ————— ————— Agilent PN 1250-0676 ————— —————

Use*

F,O, P,T

O, P,T

E1474A/E1475A 75 Ω

Test Kit (contains the following parts)**

N-to-SMB cable (male-female) SMB OPEN (male) SMB LOAD (female) SMB SHORT (male) SMB Feedthrough (male-male)

Digital Multimeter 4-wire ohms

2-wire ohms (up to 1 GΩ )

75 Ω impedance

Agilent PN E1474-80000**

Agilent PN 8120-4482 Agilent PN 1250-2354 Agilent PN 1250-2343 Agilent PN 1250-2358 Agilent PN 1250-2337

Agilent 3458A or Agilent 34401A

* F = Functional Verificati on Tests, O = Oper at i on V er i fi cation Test s, P = Per for m ance Verific ation Tests, T = T r oubl eshooting

** Test Kit must be ordere d as a separate par t f rom A gi lent Tech nol ogi es

Agilent E1472A/73A/74A/75A Service Manual General Information 21

22 General Information Agilent E1472A/73A/74A/75A Service Manual

Chapter 2

Verification Tests

Introduction The three levels of te st procedures des cri be d in this chapte r are us ed to

verify that the multiplexer or multiplexer expander:

• is fully function al (Functional Verification)

• meets selected testable specifications (Operation Verification)

• meets all testable specifications (Performance Verification)

Test Conditions/

Procedures

Performance

Test Record

Verification Test

Examples

See Table 1-1 for test e quipment requir e ments. You should complete the Performance Verificati on tests at least once a year. Fo r heavy use or severe operating e nviro nments , perfo r m the tests more often.

The verification tests assume that the person performing the tests understands how t o ope r at e the ma inframe, the mu ltiplexer/e xpa nde r , and specified test e quipment. The test pr oc e dure s do not specify equi pment settings for test equipment, except in general terms. It is assumed that a qualified, service-trained technician will select and connect the cables, adapters, and probes required for the test.

It is assumed that the temperature is no greater than 25 humidity is no gre a ter than 40% .

The results of each Performance Verification test may be recorded in the Performance Test Re c ord (T ab le 2- 3) .

Each verification test procedure includes an example program that performs the test. All example programs assume the following:

C and the rela tive

• Controller is an HP 900 0 Serie s 200 /300 computer

• Programming la nguage is BASIC

• Switch address is 70915

• Switch card number is 1

Agilent E1472A/73A/74A/75A Service Manual Verification Tests 23

Multiplexer Functional Verification

Procedure 1. Verify that the multiplexer is installed in the mainframe and that the

Example An example follows which uses an HP 9000 Ser ies 300 computer with

The Functional Verif ica ti on Te st for the Agilent E1472A/E1474A multiplex ers consists of sendi ng the *TST? comm a nd a nd c he ck ing the response. This test can be used to verify that the device is connected properly and is resp onding to basic commands.

mainframe has passed its power-on test.

2. Send the *TST? command to the device (see example following).

3. The device will return an error code. Any non-zero error code indic ates

a self-test failure. See Table 4- 3 f or a descript ion of se lf -test error c odes.

BASIC and an multi ple xe r ad dres s of 70915.

10 OUTPUT 70915;"*TST?" Send the self-test command 20 ENTER 70915;A Get response 30 PRINT A 40 END

Expander Functional Verification

Procedure 1. Verify that the multiplexer is installed in the mainframe and that both

The Functional Verific ation Test for the Agilent E1473A/E1475A RF Multiplexer Expanders consist s of se nding the :COPTio n? que ry comma nd and checking t he respo n se . This test can be use d to ve r ify that the devi ce i s connected properly and is responding to basic commands.

the mainframe and multiplexer have passed the power-on test. This test assumes the conditions l ist e d in Test Conditions/Procedures in this chapter.

2. Sen d the SYSTem :COPT i on? query command to the device (see

example following) .

3. The multiplexer wi ll retur n a string in dicating if a ny expan de r

modules are connected. The string is in the form: E1474A,E1475A,0 if only a single expander module (in this ca se an Agilen t E 14 75A) is connected to th e multiplexer .

The first parameter of the returned string indicates the type of multiplexer installed in the mainframe (Agilent E1472A or E1474A). The second parameter in the string is the model number of the first installed expander module, and the last parameter in the string is the model number of a second ins tal l ed ex pan der mo du le. I f n o ex pan der modules are installed, the string returned will be E1474A,0,0 and indicates a failure.

24 Verification Tests Agilent E1472A/73A/74A/75A Service Manual

Example An example follows which uses an HP 9000 Ser ies 300 computer with

BASIC and an multiplexer addr ess of 70915. The multiplexer is assum e d to be switch card 1.

10 DIM A$[50] 20 OUTPUT 70915;"SYST:COPT? 1" Send identify opt ion s command 30 ENTER 70915;A$ Get response 40 PRINT A$ 50 END

Operation Verification

Performance Verification

The procedures in th is se c ti on a r e us ed to provide a high degree of confidence tha t the multiplexer/ ex pa nde r is mee ti ng published specifications. The Operation Verification tests are usually a subset of the Performance Verifica ti on tests and are suitable for checkout after performing repairs.

For the Agilent E147 2A/E1474A RF Mult ipl e xe r modules, Operation Verification is per f or med by c ompleting the VSW R Tes t as de sc ribe d in the performance verif ica tion test procedur e s (T es t 2-1) . T his test is usually sufficient to verify that the instrument is meeting its specifications.

The procedures in this section a r e us ed to te st the mult iplexer’s electr i ca l performance using t he speci fic a ti ons i n Appe ndix A of the Agilent E1472A /E1473A User’s Manual or Agilent E1474A /E1475A User’s Manual as t h e performance stan da rd s.

The performance verification test is a test of the VSWR for each channel of the multiplexer. This test is sufficient to determine that the multiplexer is operating within specifications. This test is suitable for incoming inspection, troublesho oting, and preve n ti ve ma intenance .

Making Test

Connections

Figure 2-1 shows typi cal te st c onnections, cabl es , and a da pt ers re quired to test the Agile nt E1472A/E1473A 50 Ohm RF Multiplexer/Expander.

Figure 2-2 shows typi cal te st c onnections, cabl es , and a da pt ers re quired to test the Agile nt E1474A/E1475A 75 Ohm RF Multiplexer/Expander.

Figure 2-3 shows the RMD cable connections needed to test either the Agilent E1473A or Agilent E1475A RF Mu lt iplexer Expander . Refe r to the list of mult iplexer/expande r options in Chapte r 1 fo r RMD cable part numbers.

Agilent E1472A/73A/74A/75A Service Manual Verification Tests 25

Figure 2-1. 50 Ohm Test Cables and Adapters

Figure 2-2. 75 Ohm Test Cables and Adap t ers

26 Verification Tests Agilent E1472A/73A/74A/75A Service Manual

Figure 2-3. RF Multiplexer Expander Connections

Test 2-1: VSWR

Test

This test checks to see if all channels meet the VSWR specification for the multiplexer.

100 MHz to 500 MHz

Measurements 1. Setup and Calibrate the Network Analyzer

• Turn on the test set an d allow at least a one-h our warm up period.

• Press the PRESET button.

• Select the SWR measurement type from the FORMAT menu.

• Set the START frequency to 100 MHz and the STOP frequency to

500 MHz.

• Select the CAL menu. Select the 3.5 mm cal kit.

Agilent E1472A/73A/74A/75A Service Manual Verification Tests 27

• From the CAL menu, select a single port measurement (typically

port S11).

• Calibrate the port for OPEN, SHORT, and LOAD using the

appropriate test connectors on the cable that will be used for the test (refer to Table 1-1). Press DONE when the Network Analyzer indicates it is calibrated and ready for a measurement.

• Set an appropriate scale per division to measure the VSWR

(typically 100 mV/DIV).

NOTE

The connectors, cables, adapters, loads, and shorts used to calibrate the Network Analyzer must be the same connectors, cables, adapters, and loads used in the VSWR tests.

2. Measure Bank 0 VSWR

• Turn mainframe power ON

• Send *RST to multip le xe r

• Connect th e Por t 1 te st cable to the COM 00 por t on the

multiple xe r /e xpa nder as shown in Figure 2- 4.

• Install the appropriate load on Channel 00 as shown in Figure 2-4.

• Send CLOS (@ccmm00) to close chan 00, where cc = card

number and mm = module numbe r .

• Observe the Network Analyzer response. Select ma rker se arch for

MAX (or, manually locate the maximum value indicated) and record the measurement VSWR in Table 2-3 for Channel 00.

• Send OPEN (@ccmm00) to open chan 00, where cc = card

number and mm = module numbe r .

28 Verification Tests Agilent E1472A/73A/74A/75A Service Manual

Figure 2-4. Channel 00 VSWR Test Con nections

3. Repeat for Channels 01, 02, an d 03

• Repeat step 2 for channe ls 01, 02 and 03.

• Move the load to the channel under test.

• Use CLOS (@ccmmnn) and OPEN (@ccmmnn), where cc = card

number, mm = mod ule number, and nn = channe l number.

4. Repeat for Banks 1, 2, 3, 4, an d 5

• Repeat steps 2 and 3 f or the rem ai ni ng ba nks and channels.

• Connect the P or t 1 test cable to th e CO M por t on the Bank being

tested.

• Install the appropriate load on each channel as shown in Figure

2-4.

500 MHz to 1.3 GHz

Repeat Test 2-1, 100 M Hz to 500 MHz Test with th e fol lowi ng c ha nge s:

Measurements

• In Step 1, set the START frequency to 500 MHz and the stop

frequency to 1.3 GHz.

Agilent E1472A/73A/74A/75A Service Manual Verification Tests 29

Example This example performs the VSWR Test fo r the Agil en t E1472A/E1474A

and Agilent E1473A/E1475A. If a channel fai ls t he VSWR t est, a mes sage indicating the failing chan nel number is printed and the progra m pa us es .

10 ! RE-SAVE "VSWR_72" 20 DIM Result1(3,5),Result2(3,5) 30 Cc$="01" ! Card Number 40 Mm$ = "00" ! Module Number 50 ASSIGN @Mux TO 70915 60 DISP CHR$(129) 70 CLEAR SCREEN 80 PRINT "Select the test to run" 90 PRINT "Test 1. RF Multiplexer (Agilent E1472A or E1474A)" 100 PRINT "Test 2. RF Multiplexer Expander (Agilent E1473A or E1475A)" 110 INPUT "Enter the test number (1 or 2)",Tst 120 IF Tst = 2 THEN 130 Mm$ = "01" 140 END IF 150 CLEAR SCREEN 160 PRINT "Equipment Setup" 170 PRINT 180 PRINT " 1. Turn Network Analyzer ON, allow a 1 hour warm-up" 190 PRINT " 2. Install Agilent E1472A or E1474A RF Multiplexer in

mainframe" 200 IF Tst = 2 THEN 210 PRINT " 2a. Install Agilent E1473A or E1475A Expander" 220 END IF 230 PRINT " 3. Turn mainframe power ON" 240 DISP "Press Continue when ready to begin testing" 250 PAUSE 260 CLEAR SCREEN 270 PRINT "Calibrate the Network Analyzer" 280 PRINT 290 PRINT " 1. Press PRESET" 300 PRINT " 2. Select SWR measurement type from the FORMAT menu" 310 PRINT " 3. Set the START frequency to 100 MHz" 320 PRINT " 4. Set the STOP frequency to 500 MHz" 330 PRINT " 5. Select the 3.5 mm CAL kit" 340 PRINT " 6. Calibrate the test port and cable for OPEN, SHORT, and

LOAD" 350 PRINT " 7. Set the scale to 100 mV/DIV" 360 DISP "Press Continue when ready to begin testing" 370 PAUSE 380 CLEAR SCREEN

30 Verification Tests Agilent E1472A/73A/74A/75A Service Manual

390 OUTPUT @Mux;"*RST" 400 FOR K = 0 TO 5 410 PRINT TABXY(1,1),"VSWR from 100 MHz to 500 MHz" 420 FOR I = 0 TO 3 430 CLEAR SCREEN 440 PRINT TABXY(1,3),"1. Connect test port cable to COM ";VAL$(K);"0" 450 PRINT TABXY(1,4),"2. Connect LOAD to Channel ";VAL$(K);VAL$(I) 460 DISP "Press Continue when test connections are complete" 470 PAUSE 480 OUTPUT @Mux;"CLOS (@"&Cc$&Mm$&VAL$(K)&VAL$(I)&")" 490 PRINT 500 PRINT "Observe the Network Analyzer display" 510 PRINT "Note the highest measured VSWR reading" 520 INPUT "Enter measured value",Result1(I,K) 530 IF Result1(I,K)>1.25 THEN 540 PRINT 550 PRINT "Channel "&VAL$(K)&VAL$(I)&" FAILED -- VSWR > 1.25" 560 PRINT "Press Continue to test the next channel" 570 PAUSE 580 CLEAR SCREEN 590 END IF 600 NEXT I 610 NEXT K 620 OUTPUT @Mux;"*RST" 630 CLEAR SCREEN 640 PRINT "100 MHz to 500 MHz VSWR test complete" 650 DISP "Press Continue for 500 MHz to 1.3 GHz VSWR Test" 660 PAUSE 670 CLEAR SCREEN 680 PRINT "Equipment Setup" 690 PRINT 700 PRINT " 1. Turn network Analyzer ON, allow a 1 hour warm-up" 710 PRINT " 2. Install Agilent E1472A or E1474A RF Multiplexer in

mainframe" 720 IF Tst = 2 THEN 730 PRINT " 2a. Install Agilent E1473A or E1475A Expander" 740 END IF 750 PRINT " 3. Turn mainframe power ON" 760 DISP "Press Continue when ready to begin testing" 770 PAUSE 780 CLEAR SCREEN 790 PRINT "Calibrate the Network Analyzer"

Agilent E1472A/73A/74A/75A Service Manual Verification Tests 31

800 PRINT 810 PRINT " 1. Press PRESET" 820 PRINT " 2. Select SWR measurement type from the FORMAT menu" 830 PRINT " 3. Set the START frequency to 500 MHz" 840 PRINT " 4. Set the STOP frequency to 1.3 GHz" 850 PRINT " 5. Select the 3.5 mm CAL kit" 860 PRINT " 6. Calibrate the test port and cable for OPEN, SHORT, and

LOAD" 870 PRINT " 7. Set the scale to 100 mV/DIV" 880 DISP "Press Continue when ready to begin testing" 890 PAUSE 900 CLEAR SCREEN 910 OUTPUT @Mux;"*RST" 920 FOR K = 0 TO 5 930 PRINT TABXY(1,1),"VSWR from 500 MHz to 1.3 GHz" 940 FOR I = 0 TO 3 950 CLEAR SCREEN 960 PRINT TABXY(1,3),"1. Connect test port cable to COM

";VAL$(K);"0" 970 PRINT TABXY(1,4),"2. Connect LOAD to Channel

";VAL$(K);VAL$(I) 980 DISP "Press Continue when test connections are complete" 990 PAUSE 1000 OUTPUT @Mux;"CLOS (@"&Cc$&Mm$&VAL$(K)&V AL$(I )&") " 1010 PRINT 1020 PRINT "Observe the Network Analyzer display" 1030 PRINT "Note the highest measured VSWR reading" 1040 INPUT "Enter measured value",Result1(I,K) 1050 IF Result1(I,K)>1.35 THEN 1060 PRINT 1070 PRINT "Channel "&VAL$(K)&VAL$(I)&" FAILED -- VSWR >1.35" 1080 PRINT "Press Continue to test the next channel" 1090 PAUSE 1100 CLEAR SCREEN 1110 END IF 1120 NEXT I 1130 NEXT K 1140 OUTPUT @Mux;"*RST" 1150 CLEAR SCREEN 1160 PRINT "500 MHz to 1.3 GHz VSWR test complete" 1170 DISP "Press Continue to display measurement results" 1180 PAUSE 1190 CLEAR SCREEN

32 Verification Tests Agilent E1472A/73A/74A/75A Service Manual

1200 ! 1210 ! Print Measurement Results 1220 ! 1230 PRINT " 100 MHz to 500 MHz " 1240 PRINT 1250 Format: IMAGE 2("Channel ",D,D," VSWR = ",D.DDD,5X) 1260 FOR K = 0 TO 2 1270 FOR I = 0 TO 3 1280 PRINT USING Format;K,I,Result1(I,K),K+3,I ,Result1(I,K+3) 1290 NEXT I 1300 NEXT K 1310 PRINT 1320 PRINT " 500 MHz to 1.3 GHz " 1330 PRINT 1340 FOR K = 0 TO 2 1350 FOR I = 0 TO 3 1360 PRINT USING Format;K,I,Result2(I,K),K+3,I ,Result2(I,K+3) 1370 NEXT I 1380 NEXT K 1390 END

Performance Test Record

Test Limits Test limits are define d f or VSWR us ing the specificati ons in Appe ndix A of

Table 2-3 is a form you can c opy a nd us e t o recor d pe r forma nc e ver ifi cation test results for the multip le xe r /e xpa nder. Information concerning test limits, measurement uncertainty, and test accuracy ratio (TAR) is provided below.

the Agilent E1472A User’s Manual or the Agilent E1474A User’s Manual. The VSWR specifications are single-sided, (i.e., there is an upper limit but no lower limit). In the Pe r formance Test Record, th e Minimum column is blank.

Agilent E1472A/73A/74A/75A Service Manual Verification Tests 33

Measurement

Uncertainty

For the performance verification tests in this manual, measurement uncertainties a re ca lculated based on an Agilent 8753C Netw ork Ana lyz e r used with an Agile nt 85046A 50 Ohm S-Para meter Test Set for the Agil e nt E1472A/E1473 A VSWR Test and an Agilent 85046B 75 Ohm S-Paramete r Test Set for the Agilent E1474A/E1475A VSWR Test. The measurement uncertainty shown in Table 2-3 is c omputed using the 50 a nd 75 Ohm 3.5 mm connectors and the 3.5 mm CAL kit. The calculations follow.

VSWR Test

Assumptions:

• no change of temperature during the measurements

• all calculations are for a one-port test, all parameters related to port-2 are

set to 0.00

• calculations use typi c al pa ram ete rs for th e 3.5 mm CAL kit as prov ide d

in the Agile nt 85046C System Perf or manc e Ma nua l a nd shown in Table 2-2

34 Verification Tests Agilent E1472A/73A/74A/75A Service Manual

Table 2-2. Parameters used in Measurement Uncertainty Equations

Symbol Error Term Linear Value

@ 500 MHz

Linear Value

@ 1.3 GHz

D Directivity 0.010 0.010

Reflection Tracking 0.016 0.016

Source Match 0.015 0.015

Dynamic Accurac y (Magnit ude) * 0.035 0.035

S11 S11** 1.250 1.350

Connector Reflection Repeatability 0.00032 0.00032

Connector Transmissi on Repeatability 0.00032 0.00032

Magnitude drift due to temperature 0.000 0.000

Noise Floor 0.000 0.000

High Level Noise 0.00046 0.00046

Cable Reflection Stability 0.00032 0.00032

* Worst case Re fe re nce Power Level = 0 dbm ** S11 is a measured value, not an error term. The measurement uncertainty is calculated using the

maximum VSWR specification as the S11 term.

Measurement Uncertainty Equations Used

Yr = random port 1 repeatability = Rr1 + 2 ∗ Rt1 ∗ S11 + Rr1 ∗ S11

Xr = random high−level noise = 3 ∗ Nh ∗ S11

= random low −level noise = 3 ∗ N

Sr = systematic error = D + Sr1 + Tr ∗ S11 + (Ms + Sr1 ) ∗ S112 + Am ∗ S11

= S

+ √ W

+ X

+ Y

Er (linear) = reflection uncertainty magnitude = Vr + S11 ∗ Trd (magnitude)

Agilent E1472A/73A/74A/75A Service Manual Verification Tests 35

Measurement Uncertainty @ 500 MHz

Measurement Uncertainty is calculated using the values in Table 2-2 as follows:

Yr = 0.00032 + 2 ∗ 0.00032∗1.250 + 0.00032 ∗ 1.2502 = 0.0016

= 3 ∗ 0.00046 ∗ 1.250 = 0.0017

= 3 ∗ 0.000 = 0.000

= 0.010 + 0.00032 + 0.016 ∗ 1.250 + (0.015 + 0.00032) ∗ 1.2502 + 0.035 ∗ 1.250 = 0.0980

= 0.0980 + √ 0.0016

M.U. = E

(linear) = 0.1003 + 1.250 ∗ 0.000 = 0.1003

+ 0.00172 = 0.1003

Measurement Uncertainty @ 1.3 GH z

Measurement Uncertainty is calculated using the values in Table 2-2 as follows:

Yr = 0.00032 + 2 ∗ 0.00032∗1.350 + 0.00032 ∗ 1.3502 = 0.0018

= 3 ∗ 0.00046 ∗ 1.350 = 0.0019

= 3 ∗ 0.000 = 0.000

= 0.010 + 0.00032 + 0.016 ∗ 1.350 + (0.015 + 0.00032) ∗ 1.3502 + 0.035 ∗ 1.350 = 0.1071

= 0.1071 + √ 0.0019

M.U. = E

(linear) = 0.1097 + 1.350 ∗ 0.000 = 0.1097

+ 0.00182 = 0.1097

Test Accuracy

Ratio (TAR)

Test Accuracy Ratios are not defined for single-sided measurements, so all VSWR measurements have ’NA’ (Not Applicable) in the TAR column.

36 Verification Tests Agilent E1472A/73A/74A/75A Service Manual

Model _______________________ Report No. ________________________ Date _________

General Informati on

Test Facility:

Table 2-3. Performance Test Recor d (P age 1 of 3)

Name ________ ____ _________________________ Address

_____________________________________ City/State ___________________________________ Phone _____________________________________

Special Note s :

_____________________________________________________________________________________________ _____________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________ _____________________________________________________________________________________________

Report No. _________________________________ Date _____________________________________ Customer ___________________________________ Tested by __________________________________

Test Equipment Used

Test Equipment Used:

Description

1. _______________________________

2. _______________________________

3. _______________________________

4. _______________________________

5. _______________________________

Model No. Trace No. Cal Due Date

_______________ _______________ _______________ _______________ _______________

_______________ _______________ ______________ _______________ _______________

_______________ _______________ _______________ _______________ _______________

Agilent E1472A/73A/74A/75A Service Manual Verification Tests 37

Table 2-3. Performance Test Recor d (P age 2 of 3)

Model _______________________ Report No. ________________________ Date _____ ____

Test No/Descri ption Minimum*

Value

2-1. VSWR Test

VSWR 100 MHz to

500 MHz

Channel 00 Channel 01 Channel 02 Channel 03

Channel 10 Channel 11 Channel 12 Channel 13

Channel 20 Channel 21 Channel 22 Channel 23

Channel 30 Channel 31 Channel 32 Channel 33

Measured Value Maximum

___________________ ___________________ ___________________ ___________________

Value

1.25

Meas

Uncert

1.003E-1

Test Acc

Ratio (TAR)

NA NA NA NA

Channel 40 Channel 41 Channel 42 Channel 43

Channel 50 Channel 51 Channel 52 Channel 53

___________________ ___________________ ___________________ ___________________

1.25

1.003E-1

NA NA NA NA

*Single-sided specification - Minimum value does not app ly

38 Verification Tests Agilent E1472A/73A/74A/75A Service Manual

Table 2-3. Performance Test Recor d (P age 3 of 3)

Model _______________________ Report No. ________________________ Date _________

Test No/Descri ption Minimum*

Value

2-1. VSWR Test

VSWR 500 MHz to

1.3 GHz

Channel 00 Channel 01 Channel 02 Channel 03

Channel 10 Channel 11 Channel 12 Channel 13

Channel 20 Channel 21 Channel 22 Channel 23

Channel 30 Channel 31 Channel 32 Channel 33

Measured Value Maximum

___________________ ___________________ ___________________ ___________________

Value

1.35

Meas

Uncert

1.097E-1

Test Acc

Ratio (TAR)

NA NA NA NA

Channel 40 Channel 41 Channel 42 Channel 43

Channel 50 Channel 51 Channel 52 Channel 53

___________________ ___________________ ___________________ ___________________

1.35

1.097E-1

NA NA NA NA

*Single-sided specification - Minimum value does not app ly

Agilent E1472A/73A/74A/75A Service Manual Verification Tests 39

40 Verification Tests Agilent E1472A/73A/74A/75A Service Manual

Chapter 3

Replaceable Parts

Introduction This chapter contains information for ordering replaceable parts for the

Agilent E1472A/ 74A R F Mul ti plexers and Agilent E1473A/75A RF Multiplexer Expa nder modules.

Replaceable

Parts List

Exchange

Assemblies

Ordering

Information

Table 3-2 thro ugh 3-5 list replacea ble parts for the m ultiplexer s an d expanders. Table 3-6 shows reference design ator s for these pa rts, an d Ta ble 3-7 shows the manufacturer code list for these parts.

Table 3-1 lists assemblies that may be replaced on an exchange basis. Exchange assemblies are available only on a trade-in basis. Defective assemblies must be returned for credit. Order assemblies for spare parts stock by the new as sembly part number .

To order a part listed in this chapter, specify the Agilent Technologies part number and the qua ntity required . Sen d the or de r to your ne a rest Agilent Technologies Sales and Support Office.

Agilent E1472A/73A/74A/75A Service Manual Replaceable Parts 41

Table 3-1. Exchange/Replaceable Assemblies

Model Assembly Exchange PN Replaceable PN

Agilent E1472A

Agilent E1473A

Agilent E1474A

Agilent E1475A

RMD Cable

A2-A3

A1-A2 —————— E1472-66502

A2-A3

A1-A2 —————— E1474-66502

3-to-1 Cable E1472-61601

E1472-69501 ——————

E1472-66501 E1472-66502

E1472-66501 E1474-66502

Table 3-2. Agilent E1472A Replaceable Parts

Reference

Designator

A1 E1472-66501 1 PC ASSEMBLY RF COAX MUX 28480 E1472-66501

F500-F503 2110-0712 4 FUSE-S UBMINIA TURE 4A 125V NTD AX 75915 R2510 04T1 A2-A3 E1472-66502 2 RELAY PRINTED CIRCUIT ASSEMBLY 28480 E1472-66502 CBL1 E1472-61601 1 CABLE-INTERCONNECT 28480 E1472-61601

Agil e n t P ar t

Qty Part Description Mfr.

Number

50 OHM RF MULTIPLEXER ASSEMBLY

(See Figure 3-1)

1251-7584 3 CONNECTOR-POST TYPE .100-PIN-SPCG

1252-1371 1 CONNECTOR-POST TYPE .100-PIN-SPCG

8120-2981 1 CABLE-FLAT-RIBBON 28AWG 60-CNDCT

20-CONTACT

60-CONTACT

GRA-JKT

Mfr. Part

Code

18873 66900-220

18873 66900-260

76381 3365-60

Number

HDW1-HDW30 2950-0078 30 NUT-HEX-DBL-CHAM 10-32-THD .067-IN-THK 74163 500220 MNL1 E1472- 90001 1 E1472A/E1473 A USER’S MANUAL 28480 E1472-900 01

MP1 E1300 - 45 10 2 1 HA ND LE K IT- B O TTO M , VXI 28480 E1300- 45 10 2 MP2 E1300 - 45 10 1 1 HA ND LE K IT-TOP, Agil ent 28480 E1300- 45 10 1 MP3 8160-0686 1 RFI STRIP-FINGERS BE-CU TIN-PLATED 30817 00786-185 MP4 1400-0482 1 CABLE TIE .062-3-DIA .14-WD NYLON 59730 TY-26M-8 PNL1 E1472-00201 1 FRONT PANEL 28480 E1472-00201

SCR1-SCR2 0515-0368 2 SCREW-MACHINE M2.5 X 0.45 12MM-LG PAN-HD 28480 0515-0368 SCR3-SCR5 0515-0664 3 SCREW-MACHINE M3 X 0.5 12MM-LG PAN-HD 28480 0515-0664 SCR6-SCR13 0515-1135 8 SCREW-MACHINE M3 X 0.5 25MM-LG FLAT-HD 28480 0515-1135 SCR14-SCR17 0515-1375 4 SCREW-MACHINE M2.5 X 0.45 6MM-LG FLAT-HD 83486 343-300-02506 SCR18-S CR19 0515-1968 2 SCREW PH M2.5 X 11 TX 28480 0515 -1968

42 Replaceable Parts Agilent E1472A/73A/74A/75A Service Manual

Table 3-2. Agilent E1472A Replaceable Part s (Continued)

Reference

Designator

SHD1 E1472-00601 1 SHIELD-TOP 28480 E1472-00601

SHD2 E1472-00602 1 SHIELD 28480 E1472-00602 SHD3 E1472-00603 1 SHIELD-BOTTOM 28480 E1472-00603

WSH1-WSH30 2190-0124 30 WASHER-LOCK INTL T NO. 10 .195-IN-ID 98291 30 02-26

Agil e n t P ar t

Number

0590-1893 8 THREADED INSERT -C’SINK-SPCR-NO THD 28480 0590-1893

0590-1459 8 THREADED INSERT -STDF M3 X 0.5 6-MM-LG 4 6384 SOS-3.5M3-6

Qty Part Description Mfr.

Code

Mfr. Part

Number

Table 3-3. Agilent E1473A Replaceable Parts

Reference

Designator

A1-A2 E1472-66502 2 RELAY PRINTED CIRCUIT ASSEMBLY 28480 E1472-66502

CBL1 E1472-61601 1 CABLE-INTERCONNECT 28480 E1472-61601

HDW1-HDW30 2950-0078 30 NUT-HEX-DBL-CHAM 10-32-THD .067-IN-THK 74163 500220

Agil e n t P ar t

Qty Part Description Mfr.

Number

50 OHM RF MULTIPLEXER EXPANDER ASSEMBLY (See Figure 3-2)

1251-7584 3 CONNECTOR-POST TYPE .100-PIN-SPCG

1252-1371 1 CONNECTOR-POST TYPE .100-PIN-SPCG

8120-2981 1 CABLE-FLAT-RIBBON 28AWG 60-CNDCT

20-CONTACT

60-CONTACT

GRA-JKT

Mfr. Part

Code

18873 66900-220

18873 66900-260

76381 3365-60

Number

SCR1-SCR2 0515-0368 2 SCREW-MACHINE M2.5 X 0.45 12MM-LG PAN-HD 28480 0515-0368 SCR3-SCR7 0515-0375 5 SCREW-MACHINE M3 X 0.5 16MM-LG PAN-HD 28480 0515-0375 SCR8-SCR10 0515-1135 3 SCREW-MACHINE M3 X 0.5 25MM-LG FLAT-HD 28480 0515-1135 SCR11-SCR12 0515-1375 2 SCREW-MACHINE M2.5 X 0.45 6MM-LG FLAT-HD 83486 343-300-02506 SCR13-S CR14 0515-1968 2 SCREW PH M2.5 X 11 TX 28480 0515 -1968

SHD1 E1472-00602 1 SHIELD 28480 E1472-00602 SHD2 E1472-00601 1 SHIELD-TOP 28480 E1472-00601

0590-1893 8 THREADED INSERT -C’SINK-SPCR-NO THD 28480 0590-1893

SHD3 E1472-00603 1 SHIELD-BOTTOM 28480 E1472-00603

0590-1459 8 THREADED INSERT -STDF M3 X 0.5 6-MM-LG 4 6384 SOS-3.5M3-6

WSH1-WSH30 2190-0124 30 WASHER-LOCK INTL T NO. 10 .195-IN-ID 98291 30 02-26

Agilent E1472A/73A/74A/75A Service Manual Replaceable Parts 43

Table 3-4. Agilent E1474A Replaceable Parts

Reference

Designator

A1 E1472-66501 1 PC ASSEMBLY RF COAX MUX 28480 E1472-66501

F500-F503 2110-0712 4 FUSE-S UBMINIA TURE 4A 125V NTD AX 75915 R2510 04T1

A2-A3 E1474-66502 2 PC ASSEMBLY 75 OHM MULTIPLEXER 28480 E1474-66502 CBL1 E1472-61601 1 CABLE-INTERCONNECT 28480 E1472-61601

HDW1-HDW30 2950-0078 30 NUT-HEX-DBL-CHAM 10-32-THD .067-IN-THK 74163 500220

MNL1 E1474- 90001 1 E1474A/E1475 A USER’S MANUAL 28480 E1474-900 01 MP1 E1300 - 45 10 2 1 HA ND LE K IT- B O TTO M , VXI 28480 E1300- 45 10 2 MP2 E1300 - 45 10 1 1 HA ND LE K IT-TOP, Agil ent 28480 E1300- 45 10 1 MP3 8160-0686 1 RFI STRIP-FINGERS BE-CU TIN-PLATED 30817 00786-185 MP4 1400-0482 1 CABLE TIE .062-3-DIA .14-WD NYLON 59730 TY-26M-8 PNL1 E1474-00201 1 FRONT PANEL 28480 E1474-00201

Agil e n t P ar t

Qty Part Description Mfr.

Number

75 OHM RF MULTIPLEXER ASSEMBLY

(See Figure 3-1)

1251-7584 3 CONNECTOR-POST TYPE .100-PIN-SPCG

1252-1371 1 CONNECTOR-POST TYPE .100-PIN-SPCG

8120-2981 1 CABLE-FLAT-RIBBON 28AWG 60-CNDCT

20-CONTACT

60-CONTACT

GRA-JKT

Mfr. Part

Code

18873 66900-220

18873 66900-260

76381 3365-60

Number

SHD1 E1474-00601 1 SHIELD-TOP 28480 E1474-00601

0590-1893 8 THREADED INSERT -C’SINK-SPCR-NO THD 28480 0590-1893 SHD2 E1472-00602 1 SHIELD 28480 E1472-00602 SHD3 E1472-00603 1 SHIELD-BOTTOM 28480 E1472-00603

0590-1459 8 THREADED INSERT -STDF M3 X 0.5 6-MM-LG 4 6384 SOS-3.5M3-6 WSH1-WSH30 2190-0124 30 WASHER-LOCK INTL T NO. 10 .195-IN-ID 98291 30 02-26

44 Replaceable Parts Agilent E1472A/73A/74A/75A Service Manual

Table 3-5. Agilent E1475A Replaceable Parts

Reference

Designator

A1-A2 E1474-66502 2 PC ASSEMBLY 75 OHM MULTIPLEXER 28480 E1474-66502

CBL1 E1472-61601 1 CABLE-INTERCONNECT 28480 E1472-61601

HDW1-HDW30 2950-0078 30 NUT-HEX-DBL-CHAM 10-32-THD .067-IN-THK 74163 500220

Agil e n t P ar t

Qty Part Description Mfr.

Number

75 OHM RF MULTIPLEXER EXPANDER ASSEMBLY (See Figure 3-2)

1251-7584 3 CONNECTOR-POST TYPE .100-PIN-SPCG

1252-1371 1 CONNECTOR-POST TYPE .100-PIN-SPCG

8120-2981 1 CABLE-FLAT-RIBBON 28AWG 60-CNDCT

20-CONTACT

60-CONTACT

GRA-JKT

Mfr. Part

Code

18873 66900-220

18873 66900-260

76381 3365-60

Number

SHD1 E1472-00602 1 SHIELD 28480 E1472-00602 SHD2 E1475-00601 1 SHIELD-TOP 28480 E1475-00601

0590-1893 3 THREADED INSERT -C’SINK-SPCR-NO THD 28480 0590-1893 SHD3 E1473-00603 1 SHIELD-BOTTOM 28480 E1473-00603

0590-1367 5 THREADED INSERT -STDF M3 X 0.5 10-MM-LG 463 84 S O S-3. 5M3-10

0590-1459 3 THREADED INSERT -STDF M3 X 0.5 6-MM-LG 4 6384 SOS-3.5M3-6 WSH1-WSH30 2190-0124 30 WASHER-LOCK INTL T NO. 10 .195-IN-ID 98291 30 02-26

Agilent E1472A/73A/74A/75A Service Manual Replaceable Parts 45

Table 3-6. Agilen t E1 472A/73A/74A/75A Ref erence Designators

Referenc e D esignators

A .................. assembly PCB ............ printed circu it boa rd

BRK.............. br a c k et PNL ... .......... panel

C .................. cap a c i tor Q .................trans i s tor

CR................ diode R .................resistor

CS................case RP ............... resistor pack

CVR ............. cover RT ...............thermistor probe

F................... fuse SCR.............screw

J................... electrical connector (jack) SHD ............ shield

JM................ jumper SW .............. switch

K ..................relay TB ............... terminal block

MP................mechanical part U ................. integrated circuit

P .................. elect ri c al conn e c tor (p l u g )

Table 3-7. Agilen t E1 372A/73A/74A/75A Code List of Manufactu rers

Mfr.

Code

18873 DUPONT E I DE NEMOURS & CO WILMINGTON DE US 19801 28480 AGILENT TECHNOLOGIES -

CORPORATE 30817 INSTRUMENT SPECIALTIES CO INC DEL WATER GAP PA US 18327 46384 PENN ENGINEERING & MFG CORP DOYLESTOWN PA US 18901 59730 T HOMAS & BETTS CORP RA RITAN NJ US 08869 74163 PHELPS DODGE CORP NEW YORK NY US 10022 75915 LITTELFUSE INC DES PLAINES IL US 60016 76381 3M CO ST PAUL MN US 55144 83486 ELCO INDUSTRIES INC ROCKFORD IL US 61125 98291 ITT SEALECTRO CORP TRUMBULL CT US 06611

Manufacturer’s

Name

Manufacturer’s

Address

PALO ALTO CA US 94304

Code

Zip

46 Replaceable Parts Agilent E1472A/73A/74A/75A Service Manual

Figure 3-1. Agilent E1472A & E1474A Replacea bl e Pa rt s

Agilent E1472A/73A/74A/75A Service Manual Replaceable Parts 47

Figure 3-2. Agilent E1473A & E1475A Replaceable Parts

48 Replaceable Parts Agilent E1472A/73A/74A/75A Service Manual

Chapter 4

Introduction This chapter contains service information for the Agilent

E1472A/73A/74A/75A RF Mult iplexer/Ex pa nde r modules, incl uding repair strategy, t roubleshootin g te c hni que s a nd r ep ai r /m ai ntenance guidelines.

Service

WARNING

Do not perform any of the service procedures shown unless you are a qualified, service-trained technic ian, and have read the WARNINGS and CAUTIONS in Chapter 1.

Repair Strategy Procedures in this chapte r desc ribe troubleshooting techniques for the

Agilent E1472A/ E1474A RF Multiplexe r s and Agilent E1473A/E1475A RF Multiplexer Expa nders. The VXI interfa ce, rel ay decoders and relay driv ers are all contained on a single PC board in the Agilent E1472A or Agi lent E1474A RF Multiplexer. This PC board should be replaced as an exchange assembly. Exc ha nge a sse mbly part number s a re c ontained in Chapter 3 -

Replaceable Parts.

The multiplexer relays, tree relays, and their associated RF connectors are contained on separate PC boards. The Relay Assembly PC board (Agilent PN E1472-66502 or E1474-66502) is available only as a replaceable part (not an exchange assembly). Each Relay Assembly PC Board contains three banks of channels. Two complete Relay Assembly PC Boards are contained in each Agilent E1472A/E1473A/E1474A/E1475A module.

Equipment

Required

Agilent E1472A/73A/74A/75A Service Manual Service 49

Equipment req uir e d f or mul tiplexer/exp an de r t ro ubl es hooting and repai r i s listed in Ta ble 1- 1, Recommended Test Equipment. Any equipm en t that satisfies the requiremen ts given in the ta ble may be subst ituted.

To avoid damage to the screw head slots, use a T8 Tor x drive r to r e move the front panel handles and a T10 Torx driver to rem ove the shield s.

Service Aids See Chapter 3 for descriptions and locations of Agilent

E1472A/73A/74A/75A mechanical replaceable parts. Service notes, manual updates, and ser vice literatur e fo r t he modules may be ava il able through Agilent Technologies. For information, contact your nearest Agilent Technologies Sales and Support Office.

Troubleshooting The troubleshooting information and procedure s in t his section will he lp

isolate a problem to an assembly.

Identifying

the Problem

Table 4-1 list s som e common problem s, al ong with symptom s an d possible solutions.

Table 4-1. Agilent E1 472A/73A/74A/75A Common Problems

Problem

Type Symptom

Self-test Errors Non-zero error code in response to

the *TST? comman d.

Incorrect response to SYST:COPT? command.

Operator Errors Non-zero error code in response to

the SYST:ERR? command.

Catastrophic Failures

Performance Out of Specification

Not responding to commands. Check logical address setting.

Failing Functional Verificat io n Test (Chapter 2)

Failing VSWR Test (see Test 2-1 in Chapter 2).

Possible

Solutions

See Table 4-3 for information on self-test errors.

See "Isolating to an Assembly " in this chapter.

See Appendix C of the the Agilent

E1472A/E1473A User ’s Manu al or Agilent E1474A/E1475A U ser’ s Manual for RF multiplexer errors and

causes. See Appendix B of the

Agilent E1405 User’s Manua l fo r additional information on ope rator errors.

Check GPIB cables and connections. Check RMD cables and connectors.

Check user wiring and test connections.

If channels are near or above the test limit, replace the printed circuit board (Agilent PN E1472-66502 or E1474-66502).

50 Service Agilent E1472A/73A/74A/75A Service Manual

Testing the

Assembly

Table 4-2. Agilent E1472A/73A/74A/75A Tests/Checks

You can use the test s an d checks in Table 4-2 t o isolate the problem. See Figures 3-1 and 3-2 in C ha pte r 3 fo r loc at ions of mechanica l pa r ts .

Test/Check Reference Design ator Check:

Heat Damage - - - - - - - - - - Discolored PC boards

Damaged insulation Evidence of arcing

Switch/Jumper Settings

RF Multiplexer PCA

Relay Assembly PCA

J100, J101 SP1 J200

F501, F502, F503, F504 P200, P400, P500, P501

P1 A2 - A3

IRQ Level setting LADDR setting Relay Drive Level

Fuse continuity Connector contacts

Connector Contacts Test 2-1, VSWR Test

Checking for Heat Damage

Inspect the asse mbly for signs of a bnormal intern ally generated he a t such as discolored pr inted circuit boa r ds or co mponents, dam aged insulati on, or evidence of arcing.

Checking Switches/Jumpers

Verify that the logical address switch is set corre ct ly (factory set at 12 0) . Verify that the interrupt priority jumpers are set correctly (factory set at level 1). Verify the Relay D rive Level is se t c or r ectly (factor y se t a t +12 Vdc). Refer to the Agilent E1472A/E1473A User’s Manual or Agilent E1474A/E1475A User’s Manual for procedures to set or check these switches/jumpers.

Checking the RF Multiplexer PCA

Check the followi ng:

• Verify that fuses F501, F502, F503, and F504 are good.

• Check connectors P200 , P400, P5 00, an d P50 1 fo r dam ag e.

• Perform Test 2-1 in Chapter 2. Replace Relay Assembly PC for failing

channels.

Checking the Relay Assembly PCA

Check the followi ng:

• Check connector contacts P1.

• Perform Test 2-1 in Chapter 2. Replace Relay Assembly PC for failing

channels.

Agilent E1472A/73A/74A/75A Service Manual Service 51

Isolating to an

Assembly

Figure 4-1 is a simplified diagram of the multiplexer and two multiplexer expanders. For this configurat ion, up to six rela y as se mblies can be drive n by a single contr ol assembly. The rel ay assemblies must be driven in pa ir s and both RMD cable s m u st be c onnected to th e re la y a sse mblies for the assembly to be reco gnized using the SYS T :C OPT? command (See Expander Functional Verification - Chapter 2).

Figure 4-1. Multiple xer/Expander Simpl ified Diagram

52 Service Agilent E1472A/73A/74A/75A Service Manual

Self-test

Error Codes

Table 4-3 shows the se lf - te st err or co de s fo r the multiplexer modules. The meaning of each code is given in the right-hand column. If a self-test failure occurs, cycle power and repeat the test. If the problem reoccurs, the device may need repair.

Table 4-3. Self-test Error Codes

Error* D escrip tion

+0 +ss01 +ss02 +ss03 +ss10 +ss11

Self-test passes Firmware er ro r Bus error (communica tions problem with car d) Bad ID information in ID register Interrupt expected but not recei ved Busy bit was not held ≈10.5 to 18.5 msec

*ss = card number (with leading zero deleted)

Procedure 1. Verify that the multiplexer is installed in the mainframe and that the

mainframe has passed its power-on test.

2. Send the *TST? command to the device (see example following).

3. The device will return an error code . Any non-z e ro error cod e

indicates a self - te st failure. See Table 4-3 f or a desc ription of self- test error codes.

Example An example follows which uses an HP 9000 Series 300 computer with

BASIC and an multi ple xe r ad dres s of 70915.

10 OUTPUT 70915;"*TST?" Send the self-test command 20 ENTER 70915;A Get response 30 PRINT A 40 END

Agilent E1472A/73A/74A/75A Service Manual Service 53

Disassembly Use the following pr oc ed ur es to di sa sse mble the Agilent E1472A/E1474A

RF Multiplexe r or Agile nt E1473A/E1475A RF Multiple xe r Ex pande r module. For di sa sse mbly refer to Figures 4-2 and 4-3.

RF Multiplexer

Disassembly 1. To remove the covers:

• Remove all 30 nuts and washers from th e RF conn ectors as shown.

• Remove the eigh t T10 Torx screws from t he top c ove r as shown.

• Lift the top co ve r off the module. The cove r ma y be a tight fit

around the RF Connectors.

• Turn the assembly over and lift off the bottom cover. The cover

may be a tight fi t a round the RF Connecto rs .

2. To remove the A2 and A3 Assemblies:

• Remove the 3- to-1 cable fro m t h e A1 , A2, a nd A 3 a sse mblies.

• Remove the three T10 To rx scre ws f ro m the relay asse mbly PC

board as shown.

• Lift the top Rela y Assembly out.

• Lift the shie ld out as shown.

• Lift the bot tom Relay As se mbly out.

3. To remove the front panel:

• Remove the two T8 Tor x sc r ews from han dle s MP1 and MP2 as

shown.

• Remove the tw o T8 Torx scr ews holding th e pa ne l to the A1 PC

Assembly as shown.

• Lift the front panel from the A1 assembly.

54 Service Agilent E1472A/73A/74A/75A Service Manual

Figure 4-2. Agilent E 1472A/E1474A Disassembly

Agilent E1472A/73A/74A/75A Service Manual Service 55

RF Multiplexer

Expander Disassembly 1. To remove the covers:

• Remove all 30 nuts and washers from th e RF conn ectors as shown.

• Remove the th ree T10 Torx screws from the t op c ove r as sh own.

• Lift the top co ve r off of the module. The cove r m ay be a ti ght fit

around the RF Connectors.

• Turn the assembly over and lift off the bottom cover. The cover

may be a tight fi t a round the RF Connecto rs .

2. To remove the A1 and A2 Assemblies:

• Remove the three T10 To rx scre ws f ro m the relay asse mbly PC

board as shown.

• Lift the top Rela y Assembly out.

• Lift the shie ld out as shown.

• Lift the bot tom Relay As se mbly out.

Figure 4-3. Agilent E1473A/E1475A Disas sembly

56 Service Agilent E1472A/73A/74A/75A Service Manual

Repair/ Maintenance Guidelines

This sectio n provides guidelines for repairing and mainta ining the Agil e n t E1472A/7 3A/74A/75A RF Multiple xer/Expander modules, including:

• ESD precautions

• Sold e r ing pr inted circuit boards

• Post-repair safet y check s

ESD

Precautions

Sold e rin g Pr i n t ed

Circuit Boards

Electrostatic discharge (ESD) ma y da ma ge stat ic-sensi tive de vices in the multiplexer/expander modules. This dam age can range from sl ight parameter degradation to catastrophic fail ure. When ha ndling multiplexer/expander assemblies, follow these guideline s to avoid damaging components:

• Always use a static -fre e work stati on with a pad of conductive rubber or

similar ma te r ial whe n ha ndling elec tronic componen ts.

• Do not use pliers to remove a MOS or CMOS dev ic e from a high- gr ip

socket. Inste ad , us e a sma ll screwdriver to pr y the device up from one end. Slowly lift the device up, one pa ir of pins at a time.

• After you remove a MOS or CMOS device from a mo dul e, pl ace the

device onto a pad of conductive foam or othe r suitable holdi ng ma terial.

• If a device requires soldering, be sure the assem bly is placed on a pad of

conductiv e mat e ria l. Also, be sure that y ou, the pa d, an d the sol de r ing iron tip are grounded to the assembly.

The etched circuit boards in the multiplexer/expander modules have plated-through holes that allow a solder path to both sides of the insulating material. Soldering can be done from either side of the board with equally good results. When soldering to any circuit board, keep in mind the following guidelines:

• The relays used on these printed circuit boards require special soldering

techniques and e quipment. The use of a sold er -p ot is recommended for relay removal and replacement.

• Do not use a high power sol de ring i ro n on e tche d c irc uit boards, as

excessive heat m ay lift a conductor or dama ge the boa rd.

• Use a suction devi ce or wooden toothpick to remov e solder from

component mounting holes. When using a suct ion device, be su re that the equipment is pr operly grounded .

Post-Repair

Safety Checks

After making repa irs to the modul e, inspect the device for any signs of abnormal int erna lly generated he a t, suc h a s discolored printed circuit boa r ds or components, dama ge d insulation, or evi de nc e of arci ng. De te rmine and correct the cause of the condition. The n pe r fo rm the Fu nc tional Verification Test described in Chapter 2 to verify that the device is functional.

Agilent E1472A/73A/74A/75A Service Manual Service 57

58 Service Agilent E1472A/73A/74A/75A Service Manual

Chapter A

Verification Tests - C Programs

Functional Verification Tests

Example:

Multiplexer Self

NOTE

These programs are desi gne d to do the Functi onal Verification Tes ts found in Chapter 2 - Verification Tests.

The Functional Verifica ti on Te st for th e Agi lent E1472A and E1474A RF Multiplexer s c onsi sts of sending the *TS T? co mmand and checki ng t he

Test

#include <stdio.h> #include <sicl.h>

response. This test can be used to verify that the multiplexer is connected properly and is resp ondi ng to a basic command .

This program assumes a primary address of 09 and a secondary address of

15. If your Multiplexer address does not match this, you must either change the Multiplexers address setti ng or change the program line

#define ADDR "hpib7,9,15" to match your Multiplexers address setting.

#define ADDR "hpib7,9,15" /* Address of device */ main ()

{ INST id; /* Define id as an instrument */ char a[256] = {0}; /* Result vari able * / id = iopen (ADDR); /* Open instrument session */

ipromptf(id, "*TST?\n", "%t", a); /* Self test command */ printf("\n %s", a); /* Print res u l t */ getchar(); /* Pause */

iclose (id); /* Close instrument session */ }

Agilent E1472A/73A/74A/75A Service Manual Example C Programs 59

Example:

Expander Self Test

#include <stdio.h> #include <sicl.h>

#define ADDR "hpib7,9,15" /* Address of device */ main ()

{ INST id; /* Define id as an instrument */ char a[256] = {0}; /* Result vari able * / id = iopen (ADDR); /* Open instrument session */

ipromptf(id, "SYST:COPT? 1\n", "%t", a); /* Self test command */ printf("\n %s", a); /* Print res u l t */ getchar(); /* Pause */

iclose (id); /* Close instrument session */ }

The Functional Verifica ti on Te st for th e Agi lent E1473A and E1475A RF Multiplexer Expanders consist s of se nding the :COPTio n? que ry comma nd and checking the response. This tes t can be used to verify that the device is connected properly and is responding to basic commands.

60 Example C Programs Agilent E1472A/73A/74A/75A Service Manual

Performance Verification Test

This program is des ign ed to do t he Performance Verificati on Test found in Chapter 2 - Verification Tests.

NOTE

Example: VSWR

Test

/* VSWR Test E1366A */ #include <stdio.h>

#include <sicl.h> #define ADDR "hpib7,9,15" /* Address of device */ void main (void)

{ INST id, dm; /* Define id and dm as an instrument */ double result[4][12]; int i, k, Mm, tst;

This program assumes a primary address of 09 and a secondary address of

15. If your Multiplexer address does not match this, you must either change the Multiplexers address setti ng or change the program lines #define ADDR "hpib7,9,15" to match your Multiplexers address setting.

This example perf orms a VSWR Test on all channe ls in the RF Multiple xe r . If a channel is out of specification, the program prints a message and pauses.

#if defined(__BORLANDC__) && !defined(__WIN32__) _InitEasyWin(); #endif

ionerror(I_ERROR_EXIT); id = iopen (ADDR); /* Open instrum ent session */ RETRY:

printf (" \n \ n S e l e ct th e te st to run ") ; printf ("\n\n Test 1. RF Multiplexer (Agilent E1472A or E1474A)"); printf ("\n Test 2. RF Multiplexer Expander (Agilent E1473A or E1475A)"); printf ("\nEnter the test number (1 or 2) "); scanf ("%u", tst);

if (tst == 1) Mm = 0; if (tst == 2) Mm = 1; if (!(tst==1) && !(tst==2)) goto RETRY;

printf ("\n\nEquipment Setup");

Agilent E1472A/73A/74A/75A Service Manual Example C Programs 61

printf ("\n\n 1. Turn Network Analyzer power ON, allow a one hour warm-up"); printf ("\n 2. Install Agilent E1472A or E1474A Component Assembly into Mainframe."); if (tst == 2) printf ("\n 2a. Install Agilent E1473A or E1475A Expander"); printf ("\n 3. Turn Mainframe power ON"); printf ("\n 4. Press ENTER when ready to begin testing."); getchar ();

printf ("\n\nCalibrat e the Net wo rk Ana lyze r "); printf ("\n\n 1. Pres s PR ESET "); printf ("\n 2. Select SWR measurement type from FORMAT menu"); printf ("\n 3. Set the START frequency to 100 MHz"); printf ("\n 4. Set the STOP frequency to 500 MHz");

printf ("\n 5. Select the 3.5 mm CAL kit"); printf ("\n 6. Calibrate the test port and cable for OPEN, SHORT, and LOAD"); printf ("\n 7. Set the scale to 100 mV/DIV"); printf ("\n 8. Press ENTER when ready to begin testing"); getchar ();

/*--------------------100 - 500 MHz Test----------------------------*/ iprintf (id, "*RST\n"); for (k = 0; k <= 5; k++)

{ printf ("\n\nVSWR from 100 MHz to 500 MHz"); for (i = 0; i < = 3 ; i ++ ) { printf ("\n\n 1. Connect test port cable to COM %u0", k); printf ("\n 2. Connect LOAD to channel %u%u", k, i); printf ("\n 3. Press ENTER when connections are complete"); getchar ();

iprintf (id, "CLOS (@10%u%u%u)\n", Mm, k, i); printf ("\n\nObserve the Network Analyzer display"); printf ("\n Enter the highest measured VSWR reading: "); scanf ("%lf", &result[i][k]); iprintf (id, "OPEN (@10%u%u%u)\n", Mm, k, i);

if (result[i][k] > 1.25) { printf ("\n\n*** Channel %u%u FAILED - VSWR 1.25", k, i); printf ("\n Press ENTER to test next channel"); getchar (); } } }

printf ("\n\n100 MHz to 500 MHz VSWR Test complete"); printf ("\n Press ENTER for 500 MHz to 1.3 GHz test"); getchar ();

62 Example C Programs Agilent E1472A/73A/74A/75A Service Manual

/*--------------------500 MHz - 1.3 GHz Test------------------------*/ printf ("\n\nEquipment Setup");

printf ("\n\nCalibrate the Network Analyzer"); printf ("\n\n 1. Press PRESET"); printf ("\n 2. Select SWR measurement type from FORMAT menu");

printf ("\n 3. Set the START frequency to 500 MHz"); printf ("\n 4. Set the STOP frequency to 1.3 GHz"); printf ("\n 5. Select the 3.5 mm CAL kit"); printf ("\n 6. Calibrate the test port and cable for OPEN, SHORT, and LOAD"); printf ("\n 7. Set the scale to 100 mV/DIV"); printf ("\n 8. Press ENTER when ready to begin testing"); getchar ();

iprintf (id, "*RST\n"); for (k = 0; k <= 5; k++)

{ printf ("\n\nVSWR from 500 MHz to 1.3 GHz");

for (i = 0; i <= 3; i++) { printf ("\n\n 1. Connect test port cable to COM %u0", k); printf ("\n 2. Connect LOAD to channel %u%u", k, i); printf ("\n 3. Press ENTER when connections are complete"); getchar ();

iprintf (id, "CLOS (@10%u%u%u)\n", Mm, k, i); printf ("\n\nObserve the Network Analyzer display"); printf ("\n Enter the highest measured VSWR reading: "); scanf ("% lf", &res u l t[i][ k+6]); iprintf (id, "OPEN (@10%u%u%u)\n", Mm, k, i);

if (result[i][k+2] > 1.35) { printf ("\n\n*** Channel %u%u FAILED - VSWR 1.35", k, i); printf ("\n Press ENTER to test next channel"); getchar (); } } }

Agilent E1472A/73A/74A/75A Service Manual Example C Programs 63

printf ("\n\n500 MHz to 1.3 GHz VSWR Test complete"); printf ("\n Press ENTER to display measurement results"); getchar ();

/*--------------------Display Measurement Results-------------------*/ printf ("\n\n-----------------------------------------------------------");

printf ("\n 100 MHz to 500 MHz 500 MHz to 1.3 GHz\n"); for (k = 0; k <= 5; k++)

for (i = 0; i <= 3; i++) printf ("\nChannel %u%u VSWR = %18lf %18lf", k, i, result[i][k], result[i][k+6]);

iclose (id);iclose (dm); /* Close instrument session */ }

64 Example C Programs Agilent E1472A/73A/74A/75A Service Manual

Agilent E1472A Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual