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Agilent 87512A/B TRANSMISSION/REFLECTION TEST KIT

OPERATION AND SERVICE MANUAL

SERIAL NUMBERS

This manual applies directly to instruments with serial number pre x 3244J.
For additional important information about serial numbers, read
\INSTRUMENT COVERED BY MANUAL" in Chapter 1.

Agilent Part No. 87512-90020

Printed in JAPAN February 2001
Notice
The information contained in this document is subject to change without notice.
This document contains proprietary information which is protected by copyright. All rights
are reserved. No part of this document may be photocopied, reproduced, or translated to
another language without the prior written consent of the Agilent Technologies.

Agilent Technologies Japan, Ltd.
Component Test PGU-Kobe
1-3-2, Murotani, Nishi-ku, Kobe-shi,
Hyogo, 651-2241 Japan

Copyright 1990, 1992, 2000, 2001 Agilent Technologies Japan, Ltd.
c
Manual Printing History
The manual printing date and part number indicate its current edition. The printing
date changes when a new edition is printed. (Minor corrections and updates which are
incorporated at reprint do not cause the date to change.) The manual part number changes
when extensive technical changes are incorporated.
October 1990 First Edition
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

October 1992 :::::::::::::::::::::::::::::::::: Second Edition (part number: 87512-90010)
March 2000 :::::::::::::::::::::::::::::::::::: Third Edition (part number: 87512-90010)
February 2001 ::::::::::::::::::::::::::::::::: Fourth Edition (part number: 87512-90020)

Safety Summary
The following general safety precautions must be observed during all phases of operation,
service, and repair of this instrument. Failure to comply with these precautions or with
speci c WARNINGS given elsewhere in this manual violates safety standards of design,
manufacture, and intended use of the instrument.
The Agilent Technologies assumes no liability for the customer's failure to comply with these
requirements.

DO NOT Operate In An Explosive Atmosphere

Do not operate the instrument in the presence of ammable gasses or fumes. Operation of any
electrical instrument in such an environment constitutes a safety hazard.
Keep Away From Live Circuits

Operating personnel must not remove the instrument covers. Component replacement and
internal adjustments must be made by quali ed maintenance personnel. Do not replace
components with the power cable connected. Under certain conditions, dangerous voltages
may exist even with the power cable removed. To avoid injuries, always disconnect power and
discharge circuits before touching them.
DO NOT Service Or Adjust Alone

Do not attempt internal service or adjustment unless another person, capable of rendering
rst aid and resuscitation, is present.
DO NOT Substitute Parts Or Modify Instrument

Because of the danger of introducing additional hazards, do not substitute parts or
perform unauthorized modi cations to the instrument. Return the instrument to a Agilent
Technologies Sales and Service Oce for service and repair to ensure the safety features are
maintained.

iii
Dangerous Procedure Warnings

Warnings, such as the example below, precede potentially dangerous procedures throughout
this manual. Instructions contained in the warnings must be followed.
Warning Dangerous voltages, capable of causing death, are present in this instrument.

Use extreme caution when handling, testing, and adjusting this instrument.

Typeface Conventions

Bold Boldface type is used when a term is de ned. For example: icons are
symbols.
Italics Italic type is used for emphasis and for titles of manuals and other
publications.
Italic type is also used for keyboard entries when a name or a variable
must be typed in place of the words in italics. For example: copy
lename means to type the word copy, to type a space, and then to
type the name of a le such as file1.
Computer Computer font is used for on-screen prompts and messages.
4HARDKEYS5 Labeled keys on the instrument front panel are enclosed in 4 5.
Softkeys located to the right of the CRT are enclosed in .
NNNNNNNNNNNNNNNNNNNNNNNNNN NNNNN

SOFTKEYS

Certification
Agilent Technologies certi es that this product met its published speci cations at the time
of shipment from the factory. Agilent Technologies further certi es that its calibration
measurements are traceable to the United States National Institute of Standards and
Technology, to the extent allowed by the Institution's calibration facility, or to the calibration
facilities of other International Standards Organization members.

iv
Warranty
Agilent Technologies instrument product is warranted against defects in material and
workmanship for a period of one year from the date of shipment, except that in the case of
certain components listed in Chapter 1 of this manual, the warranty shall be for the speci ed
period. During the warranty period, Agilent Technologies 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 Agilent Technologies. The Buyer shall prepay shipping charges to Agilent Technologies and
Agilent Technologies shall pay shipping charges to return the product to the Buyer. However,
The Buyer shall pay all shipping charges, duties, and taxes for products returned to Agilent
Technologies from another country.
Agilent Technologies warrants that its software and rmware designated by Agilent
Technologies for use with an instrument will execute its programming instruction when
property installed on that instrument. Agilent Technologies does not warrant that the
operation of the instrument, or software, or rmware will be uninterrupted or error free.

Limitation Of Warranty
The foregoing warranty shall not apply to defects resulting from improper or inadequate
maintenance by Buyer, Buyer-supplied software or interfacing, unauthorized modi cation or
misuse, operation outside of the environmental speci cations for the product, or improper site
preparation or maintenance.
No other warranty is expressed or implied. Agilent Technologies speci cally disclaims the
implied warranties of merchantability and tness for a particular purpose.

Exclusive Remedies
The remedies provided herein are buyer's sole and exclusive remedies. Agilent Technologies
shall not be liable for any direct, indirect, special, incidental, or consequential damages, whether
based on contract, tort, or any other legal theory.

Assistance
Product maintenance agreements and other customer assistance agreements are available for
Agilent Technologies products.
For any assistance, contact your nearest Agilent Technologies Sales and Service Oce.
Address are provided at the back of this manual.

v
Safety Symbols
General de nitions of safety symbols used on equipment or in manuals.
Instruction manual symbol: the product will be marked with this symbol
when it is necessary for the user to refer to the instruction manual in order to
protect against damage to the instrument.
Indicates dangerous voltage (terminals fed from the interior by voltage
exceeding 1000 volts must be so marked).
Protective conductor terminal. For protection against electrical shock in case
of a fault. Used with wiring terminals to indicate the terminal which must be
connected to ground before operating equipment.
Low-noise or noiseless, clean ground (earth) terminal. Used for a signal
common, as well as providing protection against electrical shock in case of
fault. A terminal marked with this symbol must be connected to ground
in the manner described in the installation (Operation) manual, and before
operating the equipment.
Frame or chassis terminal. A connection to the frame (chassis) of the
equipment which normally includes all exposed metal structures.
Alternating current (power line).
Direct current (power line).
Alternating or direct current (power line).
Warning denotes a hazard. It calls attention to a procedure, practice,
condition or the like, which, if not correctly performed or adhered to, could
result in injury or death to personnel.
Caution sign denotes a hazard. It calls attention to a procedure, practice,
condition or the like, which, if not correctly performed or adhered to, could
result in damage to or destruction of part or all of the product.
Note denotes important information. It calls attention to a procedure,
practice, condition or the like, which is essential to highlight.

vi
Contents
1. General Information
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
USING THE 87512A/B . . . . . . . . . . . . . . . . . . . . . . . . 1-1
INSTRUMENTS COVERED BY MANUAL . . . . . . . . . . . . . . . 1-2
DESCRIPTION AND OPERATING CHARACTERISTICS OF THE
INSTRUMENT . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Accessories Supplied . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Accessories Available . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Calibration and Accessory Kits . . . . . . . . . . . . . . . . . . . 1-4
Cable Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
OPERATING AND SAFETY PRECAUTIONS . . . . . . . . . . . . . . 1-5
Operating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
RECOMMENDED TEST EQUIPMENT . . . . . . . . . . . . . . . . 1-5
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
OPERATING CHARACTERISTICS . . . . . . . . . . . . . . . . . . 1-6
De nitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
2. Installation
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
INITIAL INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . 2-1
ENVIRONMENTAL CONSIDERATIONS . . . . . . . . . . . . . . . . 2-2
Operating and Storage . . . . . . . . . . . . . . . . . . . . . . . . 2-2
PREPARATION FOR USE . . . . . . . . . . . . . . . . . . . . . . 2-2
Connecting the Test Kit . . . . . . . . . . . . . . . . . . . . . . . 2-2
Mating Connectors . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Power and Control Connections . . . . . . . . . . . . . . . . . . . . 2-3
PACKAGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
3. Operation
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
TYPICAL MEASUREMENT SETUP . . . . . . . . . . . . . . . . . . 3-2
One Port Measurements . . . . . . . . . . . . . . . . . . . . . . . 3-2
One Port Calibration . . . . . . . . . . . . . . . . . . . . . . . 3-2
Re ection Coecient/Return Loss . . . . . . . . . . . . . . . . . 3-3
Complex Impedance . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Two Port Measurements . . . . . . . . . . . . . . . . . . . . . . . 3-3
Two Port Calibration . . . . . . . . . . . . . . . . . . . . . . . 3-3
Transmission Measurements . . . . . . . . . . . . . . . . . . . . 3-3

Contents-1
4. Operational Veri cation
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
VERIFICATION CYCLE . . . . . . . . . . . . . . . . . . . . . . . 4-1
EQUIPMENT REQUIRED . . . . . . . . . . . . . . . . . . . . . . 4-1
INSERTION LOSS TEST WITH AN 8751A . . . . . . . . . . . . . . . 4-3
Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
INSERTION LOSS TEST WITHOUT AN 8751A . . . . . . . . . . . . . 4-5
Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
5. Service

A. Manual Changes
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
MANUAL CHANGES . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Change 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Page 1-3, Table . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Page 1-6, Tabel 1-2 Speci cations . . . . . . . . . . . . . . . . . . . A-2
Page 1-6, Tabel 1-3 Operating Characteristics . . . . . . . . . . . . . A-2
Page 2-1, Tabel 2-1 Contents of the 87512A/B . . . . . . . . . . . . . A-2
Page 5-3, Tabel 5-1. 87512A Signal Divider Replaceable Parts Lists . . . . A-2
Page 5-3, Tabel 5-2. 87512B Signal Divider Replaceable Parts Lists . . . . A-2

Contents-2
Figures
1-1. 87512A/B Transmission/re ection Test Kit with Accessories Supplied . . . 1-3
2-1. Test Kit Connections . . . . . . . . . . . . . . . . . . . . . . . . 2-2
3-1. Test Kit Features . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3-2. Typical Measurement Setup . . . . . . . . . . . . . . . . . . . . . 3-2
4-1. Insertion Loss Test Setup With an 8751A . . . . . . . . . . . . . . . 4-4
4-2. Insertion Loss Test Without an 8751A Setup . . . . . . . . . . . . . . 4-5
5-1. 87512A/B Signal Divider Exploded View . . . . . . . . . . . . . . . 5-2

Tables
1-1. Accessories Available . . . . . . . . . . . . . . . . . . . . . . . . 1-4
2-1. Contents of the 87512A/B . . . . . . . . . . . . . . . . . . . . . . 2-1
4-1. Recommended Test Equipment . . . . . . . . . . . . . . . . . . . . 4-2
5-1. 87512A Signal Divider Replaceable Parts Lists . . . . . . . . . . . . . 5-3
5-2. 87512B Signal Divider Replaceable Parts Lists . . . . . . . . . . . . . 5-3
A-1. Manual Changes by Serial Number . . . . . . . . . . . . . . . . . . A-1

Contents-3
1
General Information
INTRODUCTION
The purpose of this manual is to enable you to use your 87512A or 87512B
transmission/re ection test kit eciently and con dently. This manual contains both general
and speci c information. When information applies to both the 87512A (the 50
test kit)
and the 87512B (the 75
test kit) the name 87512A/B will be used. To use the 87512A/B
to perform a speci c function (without reading the entire manual), follow the directions in
\USING THE 87512A/B".
This chapter,
(1) outlines how to begin using the 87512A/B as quickly as possible,
(2) describes what instrument are covered by this manual,
(3) describes the test kit itself,
(4) mentions operating precautions, safety considerations and warranty restrictions,
(5) lists the additional equipment required, and
(6) de nes and lists the required instrument speci cations.

USING THE 87512A/B

The 87512A/B has been designed to operate speci cally with the Agilent Technologies
network analyzer.
To install the instrument, turn to Chapter 2.
To operate the instrument, turn to Chapter 3.
To check the proper operation of the 87512A/B, see the Chapter 4.
To troubleshoot the 87512A/B, turn to Chapter 5.

General Information 1-1
INSTRUMENTS COVERED BY MANUAL
You will nd a two-part serial number inside the cover of the test kit carrying case. The rst
four digits and the letter are the serial number pre x. The last ve digits are the sequential
sux which is unique to each test kit. The contents of this manual apply directly to test kits
with the same serial number pre x as the one(s) on the title page under the heading SERIAL
NUMBERS.
If the serial pre x of your test kit is not listed on the title page, your instrument diers from
those documented in this manual. The dierences are documented in the yellow manual
changes supplement supplied with the manual.
To keep this manual as current and accurate as possible, Agilent Technologies recommends
that you periodically request the latest manual changes supplement, as it may contain
replacement information as well as change information. The supplement for this manual is
keyed to the manual's print date and part number (on the title page) and is available on
request from Agilent Technologies.
This manual is also available on micro che form (the part number appears on the title page).
With the manual (in 4 2 6 inch micro lm transparency format) you will also receive the latest
manual changes supplement.

DESCRIPTION AND OPERATING CHARACTERISTICS OF THE
INSTRUMENT

The 87512A/B transmission/re ection test kit has been designed to operate with the Agilent
Technologies network analyzer. The test kit provides a convenient means of measuring the
re ection and transmission characteristics of a 50
or 75
device in one direction. The
frequency range of the 87512A/B is dc to 2 GHz.
\SPECIFICATIONS" lists the operating speci cations and characteristics of the 87512A/B.
The test kit is shown on the cover of this manual and is shown in Figure 3-1.

1-2 General Information
Figure 1-1. 87512A/B Transmission/reflection Test Kit with Accessories Supplied

No. Description Agilent Part Number QTY
87512A 87512B
(1) Carrying Case 87512-60011 87512-60012 1
(2) Resistive Signal Divider 87512-61001 87512-61002 1
(3) Semi-rigid cable 41952-61601 41952-61601 1
(4) Precision SHORT Termination 11512A 85036-60012 1
(5) Precision LOAD Termination 909C Opt. 012 909E 1
(6) DUT Return Cable 8120-4666 8120-4666 1
(7) Minimum Loss Pad, 50
-75
Not furnished 11852B 1

General Information 1-3
ACCESSORIES

Accessories Supplied

Figure 1-1 shows the 87512A/B with the accessories supplied:
Carrying case
Semi-rigid cable
Precision SHORT termination
Precision LOAD termination
Minimum loss pad (only for the 87512B)
DUT return cable
Accessories Available

Calibration and Accessory Kits

The calibration kits listed in Table 1-1 contain the components required to characterize the
systematic errors of various measurement systems. The calibration kits also contain precision
adapters.
The accessory kits listed contain the components generally required to measure devices with
the types of connectors indicated. Additional information is included in the analyzer's manual.
Table 1-1. Accessories Available

Connector Type Calibration Kit Accessory Kit
7 mm 85031B N/A1
Type-N 50
85032B 11853A2
Type-N 75
85036B N/A1
BNC 50
N/A1 11854A2
1 not available
2 use with 85032B type-N 50
calibration kit

Cable Sets

Use the 11851B 50
type-N cable set to extend the test port of the 87512A. Use the 11857B
75
type-N test port return cable set to extend the test port of the 87512B.

1-4 General Information
OPERATING AND SAFETY PRECAUTIONS

Operating

You need to observe only normal precautions in handling and operating the 87512A/B. Do
not exceed its operating input level of +23 dBm.
Caution Electrostatic discharge (ESD) can damage the highly sensitive microcircuits
in the 87512A/B test kits. ESD damage is most likely to occur when the test
kits are connected or disconnected. Protect them by wearing a grounding
strap that provides a path to ground of no less than 1 M
and no more than
2.5 M
. Alternatively, ground yourself by touching the outer shell of any
grounded instrument chassis before touching the test port connectors.
Never touch the center contacts of the connectors.
Use a work station equipped with an anti-static surface.

Service

The voltages in this test kit do not warrant more than normal caution for operator safety.
Nevertheless, service should be performed by quali ed personnel.

RECOMMENDED TEST EQUIPMENT
Table 4-1 lists equipment and accessories required for operational veri cation and repairing
the 87512A/B. The table notes which items are required to verify the performance of the
test kit and which are required to troubleshoot it. Other equipment may be substituted if its
speci cations meet or exceed the speci cations listed in the critical speci cations column.

General Information 1-5
SPECIFICATIONS

Table 1-2 Specifications

Parameter 87512A 87512B
Nominal Impedance 50
75

Frequency Range dc to 2 GHz dc to 2 GHz
Operating Conditions
Temperature 0 C to 55C 0 C to 55 C
Relative Humidity <95% at 40C <95% at 40 C
Dimensions 83 mm 2 91 mm 2 43 mm 83 mm 2 91 mm 2 43 mm
(3.3 2 3.6 2 1.7 inches) (3.3 2 3.6 2 1.7 inches)
Weight 410 g 410 g

OPERATING CHARACTERISTICS

Definitions

The operating characteristics listed in Table 1-3 are those typical of most 87512A/B
instruments but are not guaranteed.
Typical but non-warranted performance characteristics intended to provide information useful
in applying the instrument. Operating characteristics are representative of most instruments,
though not necessarily tested in each unit and not eld tested.
Table 1-3. Operating Characteristics

Parameter 87512A 87512B
InsertionLoss1 10 6 1 dB 10 6 1 dB
Equivalent Directivity1,2 40 dB 40 dB
Equivalent Source Match1,2 30 dB @dc frequency 1 GHz 25 dB
25 dB @1 GHz < frequency 2 GHz
Damage Level +23 dBm +23 dBm
1 2365C
2 after calibration with the furnished terminations

1-6 General Information
2
Installation
INTRODUCTION
This chapter explains how to install the 87512A/B test kit for use with the network analyzer.
The topics covered include initial inspection, environmental considerations, positioning and
connecting the test kit for use, and packaging the instrument.

INITIAL INSPECTION
Inspect the shipping container (including cushioning material) for damage. If it is damaged,
keep it until you have checked the contents for completeness. The contents are listed in
Table 2-1.
In addition, check the test kit mechanically and electrically. If the test kit and shipping
container are undamaged, performing the operation veri cation in Chapter 4 should suce for
incoming inspection. If the test kit does not pass the veri cation, refer to the troubleshooting
procedures in Chapter 5.
If the shipping container is damaged and the test kit fails the veri cation procedure, or is
damaged, defective, or incomplete, keep the shipping materials and notify both the carrier and
the nearest Agilent Technologies oce. The Agilent Technologies oce will arrange for repair
or replacement of the test kit without waiting for settlement of the claim.
Table 2-1. Contents of the 87512A/B

Agilent Model/Part Number
Component
87512A 87512B
Resistive Signal Divider 87512-61001 87512-61002
Carrying case 87512-60011 87512-60012
Semi-rigid cable 41952-61601 41952-61601
Precision SHORT termination 11512A 85036-60012
Precision LOAD termination 909C (Opt. 012) 909E
Minimum loss pad1 Not included 11852B
DUT return cable 8120-4666 8120-4666
1 only for the 87512B

Installation 2-1
ENVIRONMENTAL CONSIDERATIONS

Operating and Storage

The 87512A/B should be operated in a temperature range between 0 C and +55C with
relative humidity between 5% and 95% at 40C (non-condensing). It may be operated at
altitudes up to 4,500 meters (15,000) feet.
The 87512A/B may be stored in temperatures from 040 C to +70 C, with relative humidity
up to 90% at +65 C (non-condensing) and at altitudes up to 15,240 meters (50,000 feet).

PREPARATION FOR USE

Connecting the Test Kit

The 87512A/B is designed to mount directly to the network analyzer as shown in Figure 2-1.
The analyzer's R and A ports should be connected to the 87512A/B's R (or INCIDENT) and
A (or REFLECTED) ports, respectively. The analyzer's RF OUT port should be connected
to the test kit RF IN port using semi-rigid cable.
The device under test should be connected to the test set's TEST PORT. The exible
coaxial cable connects the test device output to the analyzer port B to allow transmission
measurements. A 75
to 50
minimum loss pad included in the 87512B matches the exible
cable and the analyzer's 50
port B to 75
test devices.

Figure 2-1. Test Kit Connections

2-2 Installation
Note Ensure that the test kit is rmly connected to the analyzer R and A port
connectors. If any of the connections are loose, the analyzer may display
erratic measurements.

Mating Connectors

The TEST PORT of the 87512A is a precision 50
type-N female connector and mates with
precision 50
type-N male connectors. The TEST PORT of the 87512B is a precision 75

type-N female connector and mates with precision 75
type-N male connectors.
Caution Do not mate type-N 50
connectors to type-N 75
connectors or damage may
result.

The RF IN, R, and A ports of the 87512A/B are precision 50
type-N connectors which
mate with the corresponding precision type-N connectors whose dimensions conform to US
speci cation MIL-C-39012.
Power and Control Connections

Power is not required for the 87512A/B.

PACKAGING
If shipping to a Agilent Technologies service center is required, each test kit should be
repackaged using the original factory packaging materials.
Alteratively, comparable packaging materials may be used. Wrap the test kit in heavy paper
or anti-static plastic. Use sucient shock absorbing material on all sides of the 87512A/B to
provide a thick, rm cushion and prevent movement. Seal the shipping container securely and
mark it FRAGILE .
In any correspondence with Agilent Technologies, refer to the 87512A/B by its full model and
serial number.

Installation 2-3
3
Operation
INTRODUCTION
This chapter illustrates the features of the 87512A/B (Figure 3-1. Figure 3-2 shows a typical
test kit measurement setup.

Figure 3-1. Test Kit Features

1. INCIDENT. This connector routes a portion of the incident signal from the analyzer
source to input R of the network analyzer. This signal is used as the reference signal in
ratio measurements.
2. REFLECTED. This connector returns the re ected signal from the device under test to
input A of the analyzer.
3. TEST PORT. The device under test is connected here. This connector provides the
output signal to the DUT and receives the re ected signal from the DUT. The 87512A
TEST PORT connector is a 50
type-N connector. The 87512B TEST PORT connector is
75
type-N connector.
Operation 3-1
Caution Do not apply a signal higher than +23 dBm to the TEST PORT.

4. RF IN. This connector receives the RF signal from the analyzer RF OUT and splits it
between the TEST and INCIDENT ports.

TYPICAL MEASUREMENT SETUP
Figure 3-2 shows the typical measurement setup using the 87512A/B.

Figure 3-2. Typical Measurement Setup

One Port Measurements

One Port Calibration

The 87512A/B should be calibrated for re ection measurements using the internal calibration
function of the analyzer. The calibration function requires the standards used to be attached
in place of a test device during calibration. Refer to the analyzer's manual for a complete
description of the calibration procedure.

3-2 Operation
Reflection Coefficient/Return Loss

After performing a one port calibration, connect the test device to the TEST PORT. Then,
select the A/R or S11 measurement function . The re ection coecient is displayed by
selecting the LIN MAG display function. The return loss is displayed by selecting the LOG
MAG display function.
Complex Impedance

Complex impedance measurements are made by the analyzer's CONVERSION function to
convert the re ection coecient to the impedance parameter. Refer to the analyzer's manual.
Two Port Measurements

Two Port Calibration

The 87512A/B should be calibrated for transmission measurements using the internal
calibration function of the analyzer. The calibration function requires the standards used to
be attached in place of a test device during calibration. Refer to the analyzer's manual for a
complete description of the calibration procedure.
Transmission Measurements

By using the 87512A/B transmission calibration and the ratio measurement functions, the
gain or loss of the device under test can be displayed directly in decibels or linear ratio units.
The calibration function removes the eects of the 87512A/B and the connecting cables. The
analyzer measurement functions B/R or S21 calculates the gain or loss of the test device. The
test device is connected between the TEST PORT and the analyzer B port using the exible
cable included in the test set.

Operation 3-3
4
Operational Verification
INTRODUCTION
This chapter provides the 87512A/B test procedure to measure the insertion loss test between
the RF INPUT and test port of the test set. Two test procedures are provided for testing the
test set's insertion loss. One is used when the 8751A is available as test equipment, and the
other is used when the 8751A is NOT available as test equipment.
This veri cation procedure is typically used for incoming inspection of the 87512A/B, and to
verify that the test set is in good order after it has been repaired.

VERIFICATION CYCLE
The 87512A/B requires periodic performance veri cation. The frequency of performance
veri cation depends on the operating and environmental conditions under which the
87512A/B is used. Verify the 87512A/B's performance at least once a year, using the
operational veri cation described in this chapter.

EQUIPMENT REQUIRED
Table 4-1 lists the equipment required to perform the operational veri cation check.
Equipment that meets or exceeds the critical speci cations listed in the table may be used as
a substitute for the recommended models.

Operational Verification 4-1
Table 4-1. Recommended Test Equipment

Equipment Critical Speci cations Recommended Model
Network Analyzer1 No substitute 8751A
Cable 1 N(m)-N(m) Cable PN 8120-46662
Semi-rigid PN 41952-616012
Pad Minimum Loss Pad, 50
- 75
11852B3
Signal Generator4 Frequency: 500 MHz 8663A
Output Level: 0 dBm
Power Meter4 Frequency: 500 MHz 436A
Amplitude: -15.7 to 0 dBm
Power Sensor4 Frequency: 500 MHz 8482A
Amplitude: -15.7 to 0 dBm
50
Termination4 Type: N-female 909C Opt. 013, 2 ea.
1 This equipment is used for the insertion loss test with an 8751A.
2 This equipment is furnished with the 87512A/B.
3 11852B is furnished with 87512B.
4 This equipment is used for the insertion loss test without an 8751A.

4-2 Operational Verification
INSERTION LOSS TEST WITH AN 8751A

This test checks the 87512A/B insertion loss between the RF INPUT and the TEST PORT
using an 8751A.
Test Equipment

Network Analyzer 8751A
N(m)-N(m) Cable, 50
PN 8120-4666 (Furnished with the 87512A/B)
Semi-rigid Cable PN 41952-61601 (Furnished with the 87512A/B)
Minimum Loss Pad, 50
- 75
11852B (Furnished with the 87512B)
(87512B only)

Procedure

1. Connect an N(m)-N(m) Cable between the 8751A RF OUT connector and the 8751A
input-B connector.
2. Setup the 8751A as follows:
Control Settings Key Strokes

PRESET 4PRESET5
Meas. Con g.: B ,B 4MEAS5
NNNNN

Sweep Type: LOG FREQ 4MENU5, SWEEP TYPE MENU , LOG FREQ
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNN

IF BW = 2 Hz 4AVG5, IF BW , 425, 4x15
NNNNNNNNNNNNNNNNN

3. Perform the following key strokes to perform the THRU calibration.
4CAL5, CALIBRATE MENU , RESPONSE , THRU , DONE: RESPONSE
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

4. Connect the 87512A/B as shown in Figure 4-1.

Operational Verification 4-3
Figure 4-1. Insertion Loss Test Setup With an 8751A

5. Press 4MKR FCTN5, MKR SEARCH , MAX to move the marker to MAX. Con rm that the
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNN

reading value is within the following limits:
87512A: -10 dB 6 1 dB
87512B: -15.7 dB 6 1 dB

Note The 50
- 75
minimum loss pad increases the 87512B test set insertion loss
from -10 dB to -15.7 dB.

6. Press MIN to move the marker to MIN. Con rm that the measurement value is within the
NNNNNNNNNNN

following limits:
87512A: -10 dB 6 1 dB
87512B: -15.7 dB 6 1 dB

4-4 Operational Verification
INSERTION LOSS TEST WITHOUT AN 8751A

This test checks the 87512A/B insertion loss between the RF INPUT and the TEST PORT
using Signal Generator and Power Meter.
Test Equipment

Signal Generator 8663A
Power Meter 436A
Power Sensor 8482A
50
Termination 909C Opt. 013, 2 ea.
N(m)-N(m) Cable PN 8120-4666 (Furnished with the 87512A/B)
Minimum Loss Pad, 50
- 75
11852B (Furnished with the 87512B)
(87512B only)

Procedure

1. Set the signal generator output for a frequency of 500 MHz and an output level of 0 dBm.
2. Calibrate the power meter and sensor with the power reference on the power sensor.
3. Connect the power sensor to the signal generator output.
4. Record the power meter reading as A.
5. Connect the test equipment as shown in Figure 4-2.

Figure 4-2. Insertion Loss Test Without an 8751A Setup

6. Record the power meter reading as B.
7. Subtract A from B.

Operational Verification 4-5
8. Con rm that the calculated result is within the following limits:
87512A: -10 dB 6 1 dB
87512B: -15.7 dB 6 1 dB

Note The 50
- 75
minimum loss pad increases the 87512B test set insertion loss
from -10 dB to -15.7 dB.

4-6 Operational Verification
5
Service
This chapter provides the inforamtion for servicing the signal divider of the 87512A/B
Transmission/Re ection Test Kit.
Figure 5-1 shows the exploded view of the 87512A signal divider (50
: PN 87511-61001) and
the 87512B signal divider (75
: PN 87511-61002). Table 5-1 lists the replaceable parts for
the 87512A signal divider, and Table 5-2 lists the replaceable parts for the 87512B signal
divider.

Service 5-1
Figure 5-1. 87512A/B Signal Divider Exploded View

5-2 Service
Table 5-1. 87512A Signal Divider Replaceable Parts Lists

Reference Part No. C Qty Description Mfr Mfr Part No.
Designator D
1 87512-87114 6 1 Label \RF IN" 28480 87512-87114
2 1250-0549 4 2 Body-RF Connector Type N Female 28480 1250-0549
0515-0999 9 4 Screw - Mach 28480 0515-0999
3 08742-0006 5 2 Spacer Outer Cond 28480 08742-0006
4 41952-60012 3 1 Inner Conductor Assy - 50
28480 41952-60012
5 1250-2229 1 2 Body-RF Connector Type N Male 28480 1250-2229
0515-0914 8 4 Screw - Mach 28480 0515-1119
6 87512-87113 5 1 Label \REFLECTED, INCIDENT" 28480 87512-87113
7 87512-87121 3 1 Label, Top 28480 87512-87121
8 87512-04001 6 1 Housing Cover 28480 87512-04001
0515-1873 0 4 Screw - Metric 28480 0515-1873
9 87512-66501 1 1 PC Board Assy 28480 87512-66501
0515-0976 2 7 Screw - Mach M220.4 28480 0515-0976
2190-0654 5 7 Washer - LK HLCL 2 28480 2190-0654
10 87512-20001 0 1 Housing Driver 28480 87512-20001
11 41952-60012 3 1 Inner Conductor Assy - 50
28480 41952-60012
12 87512-87115 3 1 Label \TEST PORT" 28480 87512-87115

Table 5-2. 87512B Signal Divider Replaceable Parts Lists

Reference Part No. C Qty Description Mfr Mfr Part No.
Designator D
1 87512-87114 6 1 Label \RF IN" 28480 87512-87114
2 1250-0549 4 2 Body-RF Connector Type N Female 28480 1250-0549
0515-0999 9 4 Screw - Mach 28480 0515-0999
3 08742-0006 5 2 Spacer Outer Cond 28480 08742-0006
4 41952-60012 3 1 Inner Conductor Assy - 50
28480 41952-60012
5 1250-2229 1 2 Body-RF Connector Type N Male 28480 1250-2229
0515-0914 8 4 Screw - Mach 28480 0515-1119
6 87512-87113 5 1 Label \REFLECTED, INCIDENT" 28480 87512-87113
7 87512-87122 4 1 Label, Top 28480 87512-87122
8 87512-04001 6 1 Housing Cover 28480 87512-04001
0515-1873 0 4 Screw - Metric 28480 0515-1873
9 87512-66502 2 1 PC Board Assy 28480 87512-66502
0515-0976 2 7 Screw - Mach M220.4 28480 0515-0976
2190-0654 5 7 Washer - LK HLCL 2 28480 2190-0654
10 87512-20001 0 1 Housing Driver 28480 87512-20001
11 41952-60013 4 1 Inner Conductor Assy - 75
28480 41952-60013
12 87512-87116 8 1 Label \TEST PORT" 28480 87512-87116

Service 5-3
A
Manual Changes
Introduction
This appendix contains the information required to adapt this manual to earlier versions
or con gurations of the 87512A/B than the current printing date of this manual. The
information in this manual applies directly to the 87512A/B Transmission/Re ection Test Set
serial number pre x listed on the title page of this manual.

MANUAL CHANGES
To adapt this manual to your 87512A/B, refer to Table A-1 and make all of the manual
changes listed opposite your test set's serial number.
Test sets manufactured after the printing of this manual may be dierent than those
documented in this manual. Later test set versions will be documented in a manual changes
supplement that will accompany the manual shipped with that test set. If your test set's serial
number is not listed on the title page of this manual or in Table A-1, it may be documented in
a yellow MANUAL CHANGES supplement.
Table A-1. Manual Changes by Serial Number

Serial Pre x or Number Make Manual Changes
3027J and 3045J Change 1

Change 1

Page 1-3, Table

Change as follows.
(1) Carrying Case 87512-60001 87512-60002 1

Manual Changes A-1
Page 1-6, Tabel 1-2 Specifications

Change as follows.
Frequency Range 5 Hz to 500 MHz 5 Hz to 500 MHz

Page 1-6, Tabel 1-3 Operating Characteristics

Change as follows.
Equivalent Source Match 1, 2
30 dB 25 dB

Page 2-1, Tabel 2-1 Contents of the 87512A/B

Change as follows.
Carrying case 87512-60001 87512-60002

Page 5-3, Tabel 5-1. 87512A Signal Divider Replaceable Parts Lists

Change as follows.
7 87512-87111 3 1 Label, Top 28480 87512-87111

Page 5-3, Tabel 5-2. 87512B Signal Divider Replaceable Parts Lists

Change as follows.
7 87512-87112 4 1 Label, Top 28480 87512-87112

A-2 Manual Changes