Keysight (Agilent) 8514B Operator Manual

Errata
Title & Document Type: 8514B S-Parameter and 8512A Reflection Transmission Test Sets Manual
Manual Part Number: 08514-90014
Revision Date: 1990-06-01
HP References in this Manual
This manual may contain references to HP or Hewlett-Packard. Please note that Hewlett­Packard's former test and measurement, semiconductor products and chemical analysis businesses are now part of Agilent Technologies. We have made no changes to this manual copy. The HP XXXX referred to in this document is now the Agilent XXXX. For example, model number HP8648A is now model number Agilent 8648A.
About this Manual
We’ve added this manual to the Agilent website in an effort to help you support your product. This manual provides the best information we could find. It may be incomplete or contain dated information, and the scan quality may not be idea l. If we find a better copy in the future, we will add it to the Agilent website.
Support for Your Product
Agilent no longer sells or supports this product. You will find any other available product information on the Agilent Test & Measurement website:
www.tm.agilent.com
Search for the model number of this product, and the resulting product page will guide you to any available information. Our service centers may be able to perform calibration if no repair parts are needed, but no other support from Agilent is available.
HP 8514B S-PARAMETER
and
HP 8512A REFLECTION/TRANSMISSION
TEST SETS
SERIAL NUMBERS
This manual applies directly to HP 8514B test sets with serial prefix 2706A and to HP 8512A test sets with serial prefix 2631A.
For additional information about serial numbers, refer to INSTRUMENTS COVERED BY MANUAL in the General Information section.
0
Copyright HEWLETT-PACKARD COMPANY
1400 FOUNTAINGROVE PARKWAY, SANTA ROSA, CA 95403 U.S.A.
MANUAL PART NO. Microfiche Part Number 08514-90015
08514-90014
1987
Printed: JUNE 1990
HEWLETT PACKARD
CERTIFICATION
Hewlett-Packard Company certifies that this product met its published specifications at the time of shipment from the factory. Hewlett-Packard further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology to the calibration facilities of other International Standards Organization members.
(N/ST,
formerly NBS), to the extent allowed by the Institute’s calibration facility, and
WARRANTY
This Hewlett-Packard system product is warranted against defects in materials and workmanship for a period corresponding to the individual warranty periods of its component products. Computer and computer
peripherals are warranted for a period of 90 days. Instruments are warranted for a period of one year. During the warranty period, Hewlett-Packard Company will, at its option, either repair or replace products which prove to be defective.
Warranty service for products installed by HP and certain other products designated by HP will be performed at Buyer’s facility at no charge within HP service travel areas. Outside HP service travel areas, warranty service will be performed at Buyer’s facility only upon HP’s prior agreement and Buyer shall pay HP’s round trip travel expenses. In all other areas, products must be returned to a service facility designated by HP.
For products returned to HP for warranty service, Buyer shall prepay shipping charges to HP and HP shall pay shipping charges to return the product to Buyer. However, Buyer shall pay all shipping charges, duties, and taxes for products returned to HP from another country.
HP warrants that its software and firmware designated by HP for use with an instrument will execute its programming instructions when properly installed on that instrument. HP does not warrant that the opera-
tion of the instrument, or software, or firmware 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 modification or misuse, operation outside of the environmental specifications for the product, or improper site preparation or maintenance.
NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. HP SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OR MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
EXCLUSIVE REMEDIES THE REMEDIES PROVIDED HEREIN ARE BUYER’S SOLE AND EXCLUSIVE REMEDIES. HP SHALL NOT
BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER LEGAL THEORY.
ASSISTANCE
Product maintenance agreements
For any assistance, contact your nearest Hewlett-Packard Sales and Service Office. Addresses are provided at the back of this manual.
and other customer assistance agreements are available
for Hewlett-Packard products.
8P24.2
DECLARATION OF CONFORMITY
according to ISO/IEC Guide 22 and EN 45014
Manufacturer’s Name: Hewlett-Packard Co. Manufacturer’s Address:
Declares that the product:
Product Name: Model Numbers: HP 8514B Product Options:
Conforms to the following product specifications:
Safety: EMC:
Supplementary Information:
1400 Fountaingrove Parkway Santa Rosa, California 95403 U.S.A.
S-Parameter Test Set
This declaration covers all options of the above product(s).
IEC
348:1978/HD 401:1980 CAN/CSA-22.2
CISPR IEC IEC IEC
11:1990 801-2:1991 801-3:1984 801-4:1988
No. 231 Series M89
/EN
55011:1991, 50082-1:1992,4 kV
/EN
50082-1:1992,3
/EN
50082-1:1992,
/EN
Group 1 Class A
500 V signal, 1000 V
CD, 8 kV AD
V/m, 27-500 MHz
AC
The product herewith complies with the requirements of the Low Voltage Directive the EMC Directive
The HP 8514B was qualified as part of a product family which includes the HP HP
8511A,
HP Santa Rosa, California
Location
European Contact: Your local Hewlett-Packard Sales and Service Office or Hewlett-Packard GmbH, Department ZQ/Standards Europe, Herrenberger
Notice for
Germany:
89/336/EEC.
8511B,
HP
Noise Declaration
Stra8e
130, D-7030
LpA
< 70
am Arbeitsplatz (operator position) normaler Betrieb (normal position)
nach
DIN 45635 T. 19 (per IS0 7779)
dB
Biiblingen
(FAX: $49-7031-143143)
73/23/EEC
851OC,
HP
and
8530A,
Regulatory Information
HP 85148/8512A Operating and Service Manual

TABLE OF CONTENTS

SECTION 1. GENERAL INFORMATION
Introduction Verifying the Test Set Instruments Covered by Manual
...............................
.......................
..............
Description and Operating Characteristics
of the Instrument
Options
..................................
Option 001
.............................
Option 002 (HP 8514B only) Option 003 (HP 8514B only) Option
002/003
Option908
Option 910 Option913
.............................
.............................
.............................
.......................
................l-4
................l-4
(HP 85148 only)
Option W03, Warranty Conversion Option
W30,
Extended Service
Accessories
Accessories Supplied
Accessories Available
...............................
....................
....................
Operating and Safety Precautions
Operating Service
Additional Equipment Required
SECTION 2. INSTALLATION . . . .
..............................
................................
...............l-6
Introduction . . . . . . . . . . . .
Initial Inspection
. . . . . . . . . . .
Environmental Considerations
Operation and Storage
. . .
Preparation for Use . . . . . . . .
Positioning the Test Set . . . Connecting the Test Set
Packaging . . . . . . . . . . . . . . . .
SECTION 3. OPERATION ......
Introduction Front Panel Features Rear Panel Features
Operator’s Check
Equipment
Procedure
................
........
.........
...........
..............
.................
HP 85148 Operator’s Check
Sampler Test b1 Thru Test b2 Thru Test
............
.............
.............
. .
. .
. . . .
..............
..............
..............
..............
..............
..............
..............
. .
..............
..............
..............
..............
...........
1-l l-l l-l l-2
l-2 l-4
1-4
............l-4
l-4 l-4 l-4
..........l-4
.............
l-4 1-5
l-5 l-5
.............l-6
l-6 l-6
..........
..........
..........
..........
..........
..........
.
..........
..........
..........
2-l 2-l 2-l 2-1 2-l 2-l 2-l 2-2 2-5
3-l 3-l 3-2 3-3 3-4 3-4
3-4 3-4 3-4 3-5 3-5
HP
8512A
Operator’s Check
a1 Test
...............................
b1 Reflection Test b2 Thru Test
...........................
Controlling Multiple Test Sets
Installation
Operation
...............................
................................
Initialization at Power-up Selecting a Test Set Measurement Calibration Operational Checks Performance Verification
.................
.......................
................
.................
.....................
.................
.....................
.................
Cable and Anti-Rotation Clamp Installation Procedure
SECTION 4. SPECIFICATIONS
Mechanical Specifications
Supplemental Characteristics
SECTION 5. TEST SET TROUBLESHOOTING
Test Set Temperature Check all Connections
...............................
................
..................
................
......................
.....................
Check Power Supply/Regulator, Fuses,
and Switches A15 Regulator Board Assembly Fuses
................................
Address Switches
Test Set Self-Test Indicators
If Self-test Fails to Run
Configuration Switch Check VTO/Driver (LO) Test Set Self-Test Indicators
.........................
............
.......................
................
...................
.......................
.....................
................
Test Set Troubleshooting Using Time Domain Test Set Assembly Replacement Procedures (1) Bias Tee (2) Coupler
(3) Switch/Splitter (4) Frequency Converter (5) Sampler (6)
VT0
(7) Regulator Board Assembly (8) Step Attenuator Assembly (9) Capacitor (10) 3.5 mm RF Connector Repair
Disassembly
..............................
...............................
.........................
....................
..............................
Assembly
.........................
...............
................
.............................
............
...........................
3-6
3-6 3-7 3-7
3-7 3-7 3-9 3-9 3-9 3-9
.....
3-11 3-11
4-1 4-1 4-2
..... 5-l
5-2 5-2
5-2
5-2
5-2 5-3 5-3 5-3 5-4 5-5 5-5
. .
5-6
...
5-7
5-9 5-l 0 510 5-10 5-l 1
5-11
5-l 1 5-l 2 5-l 2 5-12
5-12
3-6 3-6
HP
8514B/85l2A
Test Sets
Table of Contents
i
Assembly
(11) Fan
Disassembly Assembly
.............................
.................................
...........................
.............................
(12) Port 1 3.5 mm Connector
Port 2 3.5 mm Connector
Center Pin Repair Procedure
3.5 mm Nut Repair Procedure (13) Power Transformer Unratioed Power Test HP
8512A
Test Set
...................... 5-l
........................
...............
..............
.............
....................
a1 Test...............................
b1 Reflection Test b2 Thru Test
HP 85148 Test Set
Sampler Test b1 Thru Test b2 Thru Test Next Step
.............................
If Any User Channel Looks Bad
Equipment
.............................
Service Procedure Service Adapter Conclusions
SECTION 6. REPLACEABLE PART6
Introduction
..............................
Exchange Assemblies Available Replaceable Parts Lists
.......................
...........................
........................
..........................
...........................
...........................
..............
......................
..............
............ 6-l
..............
.....................
5-l 3 5-13 5-14 5-l 4
5-14 5-l 5 5-15 5-15
7
5-17
5-18 5-l 8
5-l
8 5-18 5-l 8
5-19 5-l 9 5-19 5-29 5-29 5-30 5-30
6-l 6-l 6-2
Manufacturer Codes and
Reference Designations
HP 8514B Replaceable Parts
.................
..............
HP 8514B Top View Showing Locations of
Major Assemblies
......................
HP 8514B Miscellaneous Mecnahical, Chassis,
and Electrical Parts
.....................
HP 8514B and HP 8512A Motherboard
Component Location Diagram
............
Parts Unique to HP 85148 and
8512A Option 001 (1 of 2)
................
Parts Unique to HP 85148 Option 002 HP 85148 Ports 1 and 2 Replaceable Parts Parts Unique to HP 85148 Option 003 HP
8514B
Option
002/003
Parts
HP 8512A Replaceable Parts
...........
..............
HP 8512A Top view Showing Locations of
Major Assemblies
......................
HP 8512A Miscellaneous Mechanical, Chassis
and Electrical Parts
.....................
HP 8512A Port 1 and Port 2
Replaceable Parts
SECTION 7. SERVICE SECTION 6. PERFORMANCE TESTS SECTION 9. ADJUSTMENTS SECTION 10. MANUAL BACKDATING
.....................
........................ 7-l
............ 8-l
..................
...........1
.......
. . 6-17
.......
6-2
6-3
6-7
6-8 6-13 6-14
6-16 6-l 8
6-20 6-22
6-26 6-27 6-32
9-l o-1
ii
Table of Contents
HP
8514B/8512A Test Sets
1-0
Figure l-l. HP 8514B (upper) and HP 8512A Test Sets
General Information
HP
8514B/85lZA Test Sets

Section 1. General Information

The purpose of this manual is to enable you to use your HP 8514B S-parameter or HP
8512A
reflection/ transmission test set effectively and confidently. These test sets are integral components of the HP8510 measurement system. For that reason, this manual has been divided into two major portions (Operating and Service) to be an integral part of the HP8510 documentation.
l
General Information
0
Installation
0
Operation
l
Performance Tests
l Adjustments l Backdating
The Service part consists of :
l
Replaceable Parts
0
Service
The major topics of this section, General
l
how to use the test set
l
what the test set is
l
operating, safety and warranty considerations
0
test set specifications
information,
are:

VERIFYING THE TEST SET

The analyzer.
0
l
l
HP
8514B/85l2A
HP8514B
To install the instrument, turn to the Installation section of this manual. To check the proper operation of the test set, see the Operator’s Check in the Operation section of
this manual. To see the specifications of the test set refer to
Genera/
and
information
Test Sets
HP8512A
in volume 1 of the HP 8510A manual set.
have been designed to operate specifically with the HP8510 network
Specifications
in the
HP8570B
System Manual
General Information
or
l-l
l
To verify that the instrument meets its published specifications, turn to the
section in the Note that the
l
To troubleshoot the test set, refer to the section of the
Operating and Service Manual.
HP8510B System Manual
HP8514B
HP8510B
can be performance tested only to 18
Service Manual.
Otherwise call your local Hewlett-Packard office.
or Volume 2 of the
Service
Or refer to the
Overview section and the
Service
HP851OA
Operating and Service Manual.
GHz
with the
section in Volume 4 of the
Performance Tests
HP851OA
TestSet
software.
Troubleshooting
HP851OA

INSTRUMENTS COVERED BY MANUAL

You will find a two-part serial number on the rear panel of the instrument. The first four digits and the
letter are the serial number prefix. The last five digits are the sequential suffix which is unique to each test set. The contents of this manual apply directly to test sets with the same serial number prefix as the one(s) on the title page under the heading
If the serial prefix of your test set is not listed on the title page, your instrument differs from those documented in this manual. The differences are documented in the yellow manual changes supplement supplied with the manual.
To keep this manual as current and accurate as possible, Hewlett-Packard 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 Hewlett-Packard.
Serial Numbers.
You can order this manual in microfiche form (the part number appears on the title page). With the manual (in 4 x 6 inch microfilm transparency format) you will also receive the latest manual changes supplement.

DESCRIPTION AND OPERATING CHARACTERISTICS OF THE INSTRUMENT

The combination of the HP 8514B test set with the HP8510 network analyzer and source provides a system for making S-parameter measurements over the frequency range of 45 MHz to 20 system is suited for making measurements on two port devices when it is inconvenient or inexpedient to physically reverse the DUT (device under test) to measure all four S-parameters.
The
HP8514B
uses two couplers for signal separation. For measurements of active devices, the
standard HP 8514B includes:
l
four RF to IF converters to measure all four S-parameters without reconnecting the DUT,
l
two 90 dB programmable step attenuators for changing (in 10 dB steps) the incident power
level at both ports,
l
two bias tees for applying external dc bias to both test port center conductors.
GHz.
This
1-2
General Information
8514B/85l2A
HP
Test Sets
In the “High Forward Dynamic Range Configuration” (option 003) the Port 2 coupler is reversed to optimize dynamic range in the forward measurement direction. Because the b2 sampler is connected to the coupler through path instead of the coupled arm, there is less isolation between the b2 sampler and Port 2, and the b2 power level will be higher than bl. This configuration is better for wide dynamic range or reciprocal devices or components like filters, cables, or antennas, where
S,, is generally not
measured. However, as a result of the lower isolation between the test port and the sampler, “sampler bounce,”
appearing as an occasional spurious response related to the
VT0
frequency, can be
noticeable in this “asymmetrical” test set.
The HP 8512A reflection/transmission test set uses one coupler for signal separation. The standard HP 8512A has:
three RF to IF converters, for making reflection (S,,) and transmission (S,,) measurements,
l
no step attenuators to internally change the incident power level,
l
no bias tees to apply external DC bias to the test port center conductors.
l
Tables 1 and 1B list additional characteristics of the HP85148 and
8512A,
shows the HP 8514B in a typical measurement set-up.
8510
INTERCONNECT
,
~ 1 f
TEST SET
!
J15 SOURCE
RF INPUT
TEST SET
CONTROL 1 ~
NETYORK ANALYZER
Figure 1-2.
8510B
HP
Typical HP8514B Measurement Set-up
respectively. Figure l-2
(
RF
OUTPUT
HP 83YO
OR
SYNTHESIZE0
WEEPER
83’41
HP 8514B/8512A Test Sets
General Information
1-3
Option 001
This option adds IF switching capability to allow up to four test sets to be connected to the HP8510B at the same time. The test set in use is selected from the HP85108 front panel. The 20 MHz IF signal is transmitted from the standard test set through the option 001 test set(s) to the network analyzer. IF switching is performed automatically by the option 001 test set(s), without reconnections.
Option 002 (HP 85148 only)
This option deletes the 90 dB programmable step attenuators and the dc bias tees. Note that bias can be applied externally, using the
HP11612A
bias tee, if bias is required but attenuation not.
Option 003 (HP 85148 only)
This high forward dynamic range configuration is described in detail in this section under the title
Description and Operating Characteristics of the Instrument.
Option 002/003 (HP 85148 only)
This option is a combination of option 002 and option 003, which were previously described.
Option 908
This option supplies the test set with the parts required to rack mount it with handles removed. Refer to the
installation
section of this manual for additional information.
Option 910
This option provides a duplicate test set manual.
Option 913
This option supplies the test set with the parts required to rack mount it with handles. Refer to the INSTALLATION section of this manual for additional information.
Option W03, Warranty Conversion
Option W03 converts the standard one year return to Hewlett-Packard warranty to a 90 day on-site warranty. W03 can only be ordered at the time of instrument purchase. Instruments ordered with option W03 are identified on the serial number label, or on a special identification label supplied with the
instrument.
Option W30, Extended Service
Option Option identified on the serial number label, or on a special identification label supplied with the instrument.
NOTE:
W30
adds two additional years of return-to-HP service, to follow the first year of warranty.
W30
can be ordered only at the time of purchase. Instruments ordered with option
additional system warranty information is included in the HP8510 manual set.
W30
are
1-4
General Information
8514B/85l2A
HP
Test Sets

ACCESSORIES

Accessories Supplied
Figure 3-1 shows the accessories supplied with the HP8514B and 8512A test sets (except as noted in
Table 3-l). The accessories, with part numbers, are listed in the
installation
section for both test sets.
Accessories Available
NOTE: Calibration, Verification and Adapter Kits.
Additional HP8510 system accessory information is located in the HP8510 manual set.
Hewlett-Packard offers several calibration kits suitable for calibrating an HP8510/8514B or 8512A when making error corrected measurements. Each calibra­tion kit noted below includes a set of precision standards to calibrate an HP8510 system in the indicated interface. Additional information is located in the
HP8570B System Manual
Connector Type
3.5
mm
7mm Type-N
3.5
RF Cables.
from DC to 26.5
5OQ
to 7 mm
The HP 85131D 3.5 mm Test Port Return Cable Set is a pair of 21 inch long cables specified
GHz.
and volume 1 of the
Calibration
HP
850520/E
HP 850508/C/D HP 85054B
1. These adapters attach directly to the 3.5 mm test ports.
Kit
Typically it is used with the
System and Documentation Overview
HP8510A
manual set.
Verification Kit
HP
85053B
HP 85051 B
HP 85055A
HP8514B.
One of the cables has 3.5 mm (f)
section of the
Adapter Kit
HP
85130A/B’
connectors, the other cable has one 3.5 mm (f) and one 3.5 mm (m) connector. The
HP85132C
7 mm Test Port Return Cable is a single, 36 inch cable for measurements where the device is connected directly to one test port. It is typically used with the HP8512A. The cable has two 7 mm connectors. Its frequency range is DC to 18
GHz.
Transistor Test Fixture Kit.
The
HP85041A
Transistor Test Fixture Kit (TTF) is a comprehensive measurement system for testing and characterizing stripline packaged microwave transistors. Although it has 7 mm connectors and a frequency range limited to 18
GHz,
the TTF may be easily adapted for use with the HP 85148. Please consult with your local HP Systems Engineer for specific recommendations.
HP 8514B/85l!2A Test Sets
General Information
l-5
Operating
AITENTION
Static Sensitive
Handle only at Static Safe
Work Stations
Beware of electro-static damage (ESD). The input connectors (test ports
or cables or adapters connected to the test ports) are very sensitive to
ESD. Use a grounded wrist strap when attaching devices to the input
connectors.
Otherwise, you need observe only normal precautions in handling and operating the test set. Do not exceed the front panel operating level power input as noted:
Maximum Operating Power Level
f17 dBm +20 dBm
-13
dBm HP8512A
l
Do
not
torque anything to the test port connector with greater than 90 N-cm (8in.-lb.) of torque. The
Test Port
HP8514B
Port 1 and 2
HP 8512A Port 1
Port 2
wrench supplied with your accessory kit is calibrated 90 N-cm (8 in.-lb.).
l
Do
not
torque anything to the Source RF input, on the back of your test set, with greater than 90
N-
cm (8 in.-lb.).
Service
The voltages in this test set warrant normal caution for operator safety. Nevertheless, service should be performed only by qualified personnel. Service strategy, troubleshooting procedures, replaceable parts and similar information for the HP 85148 and 8512A test sets is in the HP85708
Table 2-5 lists additional equipment and accessories required for use with the HP 8514B and 8512A test sets. The table notes which items are required to verify the performance of the test sets and which are
required to operate them. Other equipment may be substituted if its specifications meet or exceed the
specifications listed in the critical specifications column.
Service Manual.
l-6
General Information
HP 8514B/8512A Test Sets

Section 2. Installation

INTRODUCTION

This section explains how to install the HP 8514B and HP8512A test sets. The topics covered include
initial inspection, environmental considerations, positioning and connecting the test set for use, and packaging the instrument. Refer to the
system connection and turn-on instructions.
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 and illustrated in Figure 2-l.
In addition, check the test set mechanically and electrically. If the test set and shipping container are undamaged, passing the Operator’s Check (in the inspection. If the test set does not pass the in the service portion of this manual. Alternatively, call your local HP customer engineer.
If the shipping container is damaged, perform the performance tests outlined in the HP8510 manual
set. If the test set fails the performance tests, or is damaged or defective, keep the shipping materials and notify both the carrier and the nearest Hewlett-Packard office. The HP office will arrange for repair or replacement of the test set without waiting for settlement of the claim. If any of the following accessories are not received with the test set, notify your nearest HP office and the missing parts will be sent to you.
Installation
section of the HP8510 manual for more complete
Operator’s Check,
Operation
section) should suffice for incoming
refer to the troubleshooting procedures
Operation and Storage
To perform within specifications, the test sets should be operated in temperatures between 0°C and
+55X
with relative humidity less than 95% (at 40°C dry bulb temperature, maximum). They may be
operated at altitudes up to 4,500 metres (15,000 feet).
The test sets may be stored in temperatures from -40°C to
+65”
(maximum dry bulb temperature) and at altitudes up to 15,240 metres (50,000 feet).
+75”C,
with relative humidity up to 90% at
PREPARATION FOR USE Positioning the Test Set
Typically the test set is placed on a work surface whether it is rack-mounted or used on a bench. To install the flanges to rack mount the instrument (with or without handles) in a standard 19 inch rack, refer to Figure 2-2.
HP
8514B/85l2A
Test Sets
Installation
2-1
I
Cable
3.3
ft.
1.
Test Set Interconnect
Cable 2. HP-IB
long
3. RF
SMA
(M)
6
Torque Wrench
*
HP 8512A
Power
cord’
1. Test set IF interconnect cable
2.
HPIB
cable
3. RF cable (flexible)
4. Short reference port extension
5. Long reference port extension cables (2)
6. Torque wrench
7. Open end wrench
8. Type-N (m) to SMA (m) adapter
9. Attenuator (20
dB, 7 mm)
10. Anti-rotation clamps (2)
Specifications and Performance Verification
Program and Data Disk
Operating and Service Manual’
Principles of Microwave Connector
l/z
in. X
item
Cable
SMA
20 mm**
(F)
Reference Port
cables (2) 08512-20019
9/~6
in.
Care’
7.
Open
End
Wrench
HP Model or Part Number
HP
05148
8120-1348 08510-60102 8120-3445 08513-60009
08514-20013 871 0-l 764
8710-1770 1250-l 894
08515-60003
08510-10033 08515-90014 5954-1566
1. Not shown.
2. Use between HP 85132C cable and Port 2 of HP 8512A for S21 measurements.
9. Attenuator*
10. Clamp(s)**
l
* HP 8514B
HP 8512A
8120-1348
08510-60102
8120-3445 08513-60009 08512-20019
1250-1894 08512-60002
08510-10033
08515-90014
5954-1566
2-2
Installation
Figure 2-1.
Accessories supplied with
HP8514B
and
HP851249
HP
8514B/8512A Test Sets
OPTION 908
RACK MOUNT KIT WITH HANDLES REMOVED HP Part Number 5061-9677
2. Attach rack flange with pan head machine screws
3. Remove feet before rack mounting.
1. Remove trim, screws. and handle.
FRONT OF
INSTRUMENT
INSTRUMENT
OPTION 913
RACK MOUNT KIT FOR
INSTRUMENTS WITH PREVIOUSLY
ATTACHED FRONT HANDLES
HP Part Number 5061-9771
1. Remove trim and
2. Attach rack flange with2. Attach rack flange with pan head machine screws.pan head machine screws.
3. Remove feet before rack mounting.
screws
_I’
,I’
_I’
/’
89”
et”
\
I
(
I
I
INSTRUMENT
NT
HP 8514B/8512A Test Sets
Figure 2-2.
Attaching Rack Mounting Hardware
Installation
2-3
The recommended rack is the configuration with the HP8510 are provided in the
HP85043A.
Instructions for rack mounting the test set in a system
HP8570
installation
section and in the
HP85043A
System Rack Manual.
Static Free Workstation
When installing the test set for use on a bench, place it on a grounded anti-static work surface (Figure 2-3) to lessen the chance of ESD damage. The anti-static surface should extend far enough in front of the test set to provide effective protection at the test ports and cable ends.
If your test set is equipped with a grounding receptical, you may use that in place of a static mat.
GROUNDING RECEPTICAL
WRIST STRAP
Figure 2-3.
A3 WIRE CORD CONNECTION
MUST PROTECTION.
Recommended Static Free Workstation
WITH
BE
LINE
PROPER
TO
USED
POWER
GROUND
FOR ESD
Connecting the Test Set
Mating Connectors.
precision 3.5 mm female connectors. The HP 8512A has 7 mm test port connectors.
The TEST SET INTERCONNECT connector is a series D subminature female connector with 7 RF connections.
The 8510 SYSTEM BUS connector is a female HPIB type connector and mates with the corresponding male connectors of
Power and Control Connections.
line power) and the required RF source connections.
HP 8514B PORTS 1 and 2 are precision 3.5 mm male connectors and mate with
HPIB
cables.
Figure 2-4 shows the following connections (with the exception of
Connect the power cord to an electrical outlet and the line module to supply power to the test set. Connect the test set IF interconnect cable from the
Jll
TEST SET INTERCONNECT connector on the rear panel of the test set to the Jl TEST SET INTERCONNECT connector on the rear panel of the HP85102 IF Detector.
2-4 Installation
HP 8514B/85E!A Test Sets
Connect the system bus cable from the HP85148 (or 8512A) J12 8510 SYSTEM BUS connector to the 8510 INTERCONNECTconnector of the HP85101 display/processor. The test set IF interconnect cable and the system bus cable transmit control signals between the test set and the network analyzer.
Signal Path Connections.
The IF signals from the test set are transmitted to the HP 85102 IF Detector
by the test set IF interconnect cable (see above). RF signals are transmitted from the source to the test set by the 3.5 mm flexible RF cable supplied with
the test set. Recommended torque is 56 N-cm (5in.-lb) for the RF cable-to-test-set/RF input connection.
Anti-Rotation Clamps.
(HP8514B only) Use these clamps to stabilize the test port/RF cable connec-
tion. Connect the test port cables to the test ports and tighten them as specified in the cable manual. Loosen the anti-rotation clamp thumb screw sufficiently to slip the clamp over the cable and up to the front panel. The clamp end with the flats should come to rest on the flats of the test port shoulder. Finger tighten the thumb screws to prevent further loosening or tightening of the test port/RF cable connec­tion.
The internal O-ring is field replaceable without disassembling the anti-rotation clamp. Pry it out with fine tweezers or a similar tool when it no longer holds the RF cable securely. Insert the new O-ring by engaging one side of it in the slot of the phenolic clamp donut. Use your fingers to push the O-ring into the rest of the slot.
The HP part number of the O-ring is 0900-0007 (CD 7).

PACKAGING

If reshipping is required, each test set should be repackaged in the original factory package. Con-
tainers and materials identical to those used by the factory are available through Hewlett-Packard offices.
Alternatively, comparable packaging materials may be used. Wrap the test set in heavy paper or anti­static plastic. If shipping to an HP Office or Service Center, complete and attach a service tag (in the HP 8510 manual set). Use sufficient shock absorbing material on all sides of the test set to provide a thick, firm cushion and prevent movement. Seal the shipping container securely and mark it
FRAGILE.
In any correspondence with HP, refer to the test set by full model and serial number.
HP 8514Bf8512A Test Sets
installation 2-5
SYSTEM
/’
.
8510
BUS
HP
8519B/12A
TEST SET
8510 INTERCONNECT
RF INPUT
+
\
TEST SET
INTER-
CONNECT
-
> lo “O’R *350B
HP 8340/41 USE ONE ONLY
FROM
HP B5lOB
rc
STOP SWEEP
8510 INTERCONNECT
Cr
FROM
HP 85108
IN/OUT
HP-18
,’
.m\
I
.o 0 0 0 0
W
HP
0
000
8390
OR
SYNTHESIZE0
WEEPER
Figure 2-4. HP 8514B and 8512A System Connections
DOOllO
BWl
0
r
8510 INTERCONNECT
HP
SWEEP OSCILLATOR
83508
HP INTERFACE BUS 7
2-6
Installation
HP 8514B/8512A Test Sets

Section 3. Operation

This section illustrates the features and functions of the front and rear panels of the HP 8514B and 8512A test sets. It also includes an operator’s check procedure. The function of the operator’s check is to confirm that the HP 8514B and HP 8512A test sets function properly as part of an HP 8510 system. The performance tests documented in the manual set are a more rigorous check. Volume 2 of the HP8510A manual set documents the HP8512A only.
l
Also included in this section: a description of the Multiple Test Set Option (Option 001).
l
Instructions for connecting a cable and anti-rotation clamp to your test set test port.
HP
85708
System Manual and volume 2 of the
HP851OA
HP 8514B/SSl2A Test Sets
Operation
3-l
1. Line Switch.
This switch turns the test set on and off. When the side of the switch labeled 0 is depressed, the test set is off; I is on.
2. Line LED.
This LED goes on and off with the test set line
switch.
3. Active LED.
This LED lights about two seconds after power
is turned on, following the successful conclusion of self-test.
4. Port 1.
This test port transmits RF energy from the source to the DUT and receives reflected RF energy from the DUT. The reflected RF energy is coupled to a sampler within the instrument.
5. Bias Fuse.
(HP8514B
only) The fuse which limits bias applied to Port 1 is within this holder (see the instrument front panel or the replaceable parts list for the value of the fuse
Fl).
Figure
3-1.

Front Panel Features

6. al LED.
(HP8514B
only) This LED indicates that the HP 85148 is internally switched to the Sl 1 or S21 mode and source power is switched to Port 1.
7. a2 LED.
HP8514B
(HP 85148 only) This LED indicates that the
is internally switched to the S22 or S12 mode and
source power is switches to Port 2.
8. Bias Fuse.
(HP8514B
only) The fuse which limits bias applied to Port 2 is within this holder (see the instrument front panel or the replaceable parts list for the value of the fuse F2).
9. Port 2.
In the
HP6514B,
this test port transmits RF energy from the source to the DUT and receives reflected RF energy from the DUT.
In the
HP8512A,
this port only receives transmitted (from Port 1) RF energy. The received RF energy is input directly to a sampler within the instrument.
of
HP 8514B (upper) and HP 8512A
3-2
Operation
HP 8514B/8512A Test Sets

REAR PANEL FEATURES

10.
Line module.
fuse and line voltage selector. Pull out the right side of the line module cover to replace or change the fuse or to change the voltage selection. Note that the voltage selector drum must be removed to rotate it to a different voltage setting. Recommended fuse values are printed on the rear panel.
11. Extension A.
port extension cable (RPEC. supplied) used to equalize the length of the reference signal-a2 sampler path with the test signal-b2 sampler path.
When the DUT is connected to Port 2 with any of the recommended
RF cables, connect the long RPEC to Extension A.
12.
Extension B.
port extension cable (RPEC. supplied) used to equalize the length of
the reference signal-al sampler path with the test
path.
When the DUT is connected to Port 1 with any of the recommended RF cables, connect the long RPEC to Extension connected directly to Port 1, connect the short RPEC to Extension B.
13. RF
Input.
source.
This assembly houses the line cord connector, line
This pair of 3.5 mm connectors holds the reference
This pair of 3.5 mm connectors holds the reference
signal-b1
8. When the DUT is
This
35mm
connector receives RF energy from the
Figure 3-2. Rear Panel Features
HP 8514B/85lZA Test Sets
sampler
14.
JlO
Test Set Interconnect.
with option 001. It allows connecting another test set to the option
001 test set. Up to four test sets can be serially connected to the HP 8510. The HP 8510 system automatically selects the IF output
from the chosen test set for processing and display.
15.
Jll
Test Set Interconnect.
from the test set to the HP85102 IF Detector. It also transmits control signals bidirectionally.
18. 8510 System Bus Address Switch.
switch sets the system bus address of the test set. The binary weight of each pole is indicated on the rear panel as are the on and off positions. Decimal twenty (off-off-on-off-on. from left to right) is the default setting.
17. 512 8510
18.
Port
19.
Port 1 Bias.
of
HP 8514B (upper) and HP 8512A
System Bus Connector.
communications with the HP85101 display/processor.
2 Bias.
supply bias through the center conductor of Port 2 to active devices under test.
supply bias through the center conductor of Port 1 to active devices under test.
(HP8514B only) This female BNC connector is used to
(HP8514B only) This female BNC connector is used to
This connector is used only in test sets
This connector transmits the IF signal
This five-pole binary-weighted
This connector is used for
Operation
HPIB
3-3
Passing this check confirms that the HP 85146 and HP 8512A test sets function properly as part of an HP8510 system.
Equipment
Item
HP Model or Part Number
Network analyzer system . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 8510A/B
Test port return cable set . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Test port return cable 20 dB attenuator (pad)
1. use with HP85148
2. use with HP8512A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . HP 8493C option
HP85131Dl
.85132-600052
0202
Procedure
Plug in and turn on the test set (it should not be connected to any other instrument or device now). The line LED should light immediately and the active LED should light in about two seconds. Those indications mean that the instrument has passed its self-test. Turn off the test set and connect it to the HP8510 system as shown in Figure 3-3. Turn on all of the system instruments, network analyzer last. Let the instruments complete their self-tests.
DUTs
Remove any cables or
from the test set test ports. Press
HP85102 to preset the HP8510 and access the STIMULUS menu.
a.
HP8340/41
b.
HP8350B systems: press
systems: press
[SWEEP TIME]
[STEP]
on the HP85101 to put the source in step mode.
[2]
[0] [0] narrow band systems, the level of the frequency band generated should match the levels shown in Figure 3-3 for a given frequency.
[PRESET]
[k/m]
to set the sweep time to 200 ms. In
STIMULUS
[MENU]
on the
Now perform either the HP8514B or 8512A Operator’s Check.
In case of difficulty, refer
to Test Set Troubleshooting in the
local HP Service Office.
NOTE:
-27 + 5
All of the following
dB
at 20
GHz.
HP8514B
CRT traces should decrease from
Sampler Test
1.
To check all of the samplers in the HP 85148 test set, first redefine the a2 and b2 phase lock and drive paths:
3-4
Press PARAMETER
LOCK]
Press
DONE]
Operation
[a21
[REDEFINE DONE]
[User 2
b2]
to redefine b2.
[MENU] [User 3
a21
to redefine
[REDEFINE PARAMETER] [DRIVE] [Port 21 [PHASE
a2.
[REDEFINE PARAMETER] [DRIVE] [Port 21 [PHASE LOCK]
HP85708
Service Manual
-20+5 dB
or contact your
at 2
GHz
[a21
[REDEFINE
HP
8514ES/8512A
to
Test Sets
2.
Connect an open (or short) to port 1 and port 2.
3.
Press [User
1 al], [User 2 b2],
[User 3 a2],
and
[User 4 bl]
to check the channels indicated.
The b, and b, traces should resemble Figure 3-3. The a, and a2 traces should resemble Figure 3-4.
Figure 3-3.
Typical Operator’s Check CRT Power Level Trace
bl Thru Test
4.
Connect a thru (two test port return cables) from port 1 to port 2.
5. Press PARAMETER [MENU] [USER 4 bl] [REDEFINE PARAMETER] [DRIVE] [PORT
[PHASELOCK]
[a21
[REDEFINE DONE]
to observe the bl thru power level trace. The trace should
21
resemble Figure 3-4.
b2 Thru Test
6. Leave the thru connection of step 4 connected. Press PARAMETER [MENU] [USER 2
[REDEFINE PARAMETER] [DRIVE] [PORT l] [PHASELOCK] [al] [REDEFINE DONE]
to observe
the b2 power level trace. The trace should resemble Figure 3-4.
Make sure that you redefine the parameters to the original conditions for al, bl, a2, and b2.
7.
If any of the traces are not within the specified limits, check all of the connections and repeat the above procedure. If symptoms persist, refer to the Service Overview section of the
Service Manual
or volume 4 of the HP 8510A manual set.
b2]
HP857OB
HP 8514B/8512A Test Sets
Operation
3-5
NOTE:
-32k5
All of the following
dB
al Test
at 18
HP8512A
CRT traces should decrease from
GHz.
Figure 3-4. Typical Operator’s Check CRT Power Level Trace
-2O+
5 dB at 0.5
GHz
to
1.
Press PARAMETER
[MENU] [USER 1 al]
to see the channel al power level trace.
bl Reflection Test
2.
Connect an open (or a short) to port 1.
3.
Press
[USER 4 bl]
to observe the bl power level trace. The trace should resemble Figure 3-3.
b2 Thru Test
4.
Connect a thru (a 20 dB attenuator and test port return cable) between port 1 and port 2.
5. Press PARAMETER [MENU] [USER 2
[PHASELOCK] [al] [REDEFINE DONE]
resemble Figure 3-4.
6.
If any of the traces are not within the specified limits, check all of the connections and repeat the above procedure. If symptoms persist, refer to the Service Overview section of the
Service Manual or volume 4 of the HP
b2]
[REDEFINE PARAMETER] [DRIVE] [PORT
to observe the b2 power level trace. The trace should
W857OB
8510A
manual set.
l]
3-6
Operation
HP
8514J3/8512A
Test Sets

Controlling Multiple Test Sets

Option 001 for the HP 851X-series test sets allows an HP 8510 to alternately control up to four test sets. While a measurement is proceeding on Test Set number 1, which is equipped with option 001, test device hookup can be accomplished on Test Set number 2, which does not need to be equipped with option 001, unless another test set is to be connected. When the measurement on test set number 1 is complete, then the HP 8510 can control test set number 2. Only one HP 8516A test set may be used in a multiple test set configuration.
In a standard test set, the 20 MHz IF and control signals are applied directly to
INTERCONNECT, which connects to the HP 8510. Option 001 adds a set of IF switches, control switches, and the JlO TEST SET INTERCONNECT connector. This allows the selection of 20 MHz test set IF signals. As shown in Figure 3-5, test set number 1 can apply its IF to the HP 8510 or it can switch to pass the IF from test set number 2 through the JlO TEST SET INTERCONNECT to the HP 8510.
Jll
TEST SET

INSTALLATION

Set each test set rear panel address switch to the address listed in Figure 3-5, if using a two test set configuration and Figure 3-6, if configuring more than two test sets. Use the supplied Test Set
Interconnect cable to connect test set number 1,
Interconnect cable to connect test set number 2, test set “daisy chain” to include up to four test sets if the total length of all Test Set Interconnect cables does not exceed 13 meters (about 40 feet). The last test set in the chain does not require option 001.
If the RF coaxial switch(s) is not incorporated into the system, then the RF input to the test set must be manually switched to the active test set.
Jll
to the HP 8510. Use the supplied Test Set
Jll
to test set number 1, JlO. You may continue this
OPERATION Initialization at Power-up
Upon power-up, the IF switches must be configured so that only one system test set is active. The following procedure shows how to make one test set active.
1.
Check the active lights of all system test sets.
2.
Check the HP 8510’s expected test set address by pressing
match the address of the desired test set. If not, change the address.
3.
If unselected test sets are active, (active light ON), deactivate the test set by temporarily addressing
it. Then return to the desired address.
HP 8514B/8512A Test Sets
[LOCAL] [TEST SET].
This should

Operation

3-7
HP 85108
NETYORK
HPB34X OR HPB35OB SOURCE
ANALYZER
HP 11713A
ATTENURTOR/SYITCH
DRIVER
3-8
NOTE:
1.
Not all system connections are shown.
2.
In dual source configurations, the second can be multiplexed in a similar manner. If only one dual source test set is used,
the second source can be directly connected to the appropriate test set.
New ADDRESS
of Test Set Selected
Operation
20
21
HP851X -
TEST SET REAR PANEL TEST SET REAR PANEL ADDRESS SWITCH SET ADDRESS SWITCH SET
OPT.001
TEST SET Xl
TO (20)
HP 33311C Coaxial Switch Positions with Two lest Sets
Test Set
HP 33311 C Coaxial Switch
Port Selected
1
2
Figure 3-5.
RF and IF Switching with Two Test Sets
Port 1 Port 2
HP
HPBSlX
TEST SET 12
TO (21)
8514B/85l2A
Test Sets
Selecting a Test Set
Test Set IF Switching.
generate an addressed command to the test set. Each time the HP 8510
function is changed (see HP 8510 set IF to external and the newly addressed test set IF to internal. The test set front panel
The active test set is selected by the built-in capability of the HP 8510 to
ADDRESS of TEST SET
LOCAL
Menu), the HP 8510 switches the previously addressed test
ACTIVE
indicator shows the test set status. When the test set is active the IF signals from the test set are applied directly to are passed through to
Jll
TEST SET INTERCONNECT. When the test set is inactive the IF signals appearing at JlO
Jll
and on to the next test set or the HP 8510.
The address of the test set can be changed manually from the HP 8510 front panel by selecting the
ADDRESS of TEST SET
changed under program control using the HP 8510 HP-IB
function then entering the address of the test set and pressing
ADDRTESS;
command. The HP-IB address
[xl],
or it can be
of a particular test set is set by address switches on the test set rear panel.
RF Switch Driver Commands. TEST SET
to the device at the
function is changed, a code sequence is automatically issued over the HP 8510 system bus
ADDRESS of RF SWITCH.
A related feature of the HP 8510 is that when the HP 8510
In the recommended configuration, this device is an HP
ADDRESS of
11713A Attenuator/Switch Driver which in turn controls one or more HP 33311C Coaxial Switchs. As shown in Figures 3-5 and 3-6, these switches are used to select which of the test sets receive the RF
output of the network analyzer source. The exact command issued depends upon the new value of the
ADDRESS of TEST SET
function, also shown in Figures 3-5 and 3-6.
After selecting the active test set, perform the system calibration procedure as usual. When you select a different test set, make sure that you recall the Cal Set that applies to
that
test set.
Since the Cal Set Limited Instrument State does not include the number of the active test set, a Cal Set
which does not apply to the current test set can be turned on without any HP 8510 caution messages
appearing. This will cause errors in the displayed data because incorrect error coefficients are applied
to the measured data.
It may be convenient to store a Hardware State file and an Instrument State file for each combination of test set and cal set. You may also store your Hardware State file on a tape or disc for future use. To change the configuration, simply recall the appropriate Hardware State file, which sets the Address of Test Set and issues the RF switch command, then the appropriate Instrument State file, which recalls the Cal Set.
Operational Checks
To check operation of a multiple test set configuration, first connect a device with a known response at test set number 1, then press HP 8510
address of test set number 1 (this would be should appear. Press
[DISPLAY] [DATA--MEMORY] [DISPLAY: DATA and MEMORY]
trace for later comparison. Now use
[LOCAL] [TEST SET], [ADDRESS of TEST
20)
then press
ADDRESS of TEST SET
[xl].
The test set number 1 measurement
to select test set number 2, then switch
SETI, enter the
to store the
back to test set number 1. Observe any difference in the response between the stored trace and the result after switching back and forth between the test sets. Repeat for each of the test sets. Any
difference in the data believed due to the option 001 IF switch or RF switching must be investigated.
Performance Verification
Standard System Performance Verification procedures are used to verify the operation of the option 001 test set as test set number 1. To verify the performance of another test set in the chain, select it as the active test set and proceed as usual.
HP
8514B/85l2A
Test Sets
Operation
3-9
7::‘ 5:‘ 21’
TO HP85108
NETWORK ANALYZER
TEST SET
INTERCONNECT
:ic- cr-
__
HP11713A
/
A
+24\/
TEST SET
P3
SO
1
B
A
TEST
HP3331 1C
COAXIAL
SWITCH
#2
SET #ii
J
s9
A
I
RF IN
(FROM SOURCE)
12
AL
NOTE: 1.
RF
TO (22)
!N
JlO
HP851 X
#3
TEST SET TEST SET REAR PANEL ADDRESS SWITCH
TO (23)
#4
SET
HP851X - OPT.001
TEST SET
TEST SET REAR PANEL TEST SET REAR PANEL
ADDRESS SWITCH SET ADDRESS SWITCH SET
TO (21)
#l
HP851X - OPT.001
TEST SET
TO (21)
#2
Ji’
HP851X - OPT.001
TEST SET TEST SET REAR PANEL ADDRESS SWITCH SET
Not all system connections are shown.
2.
In dual source configurations, the second can be multiplexed in a similar manner. If only one dual source test set is used,
the second source can be directly connected to the appropriate test set.
HP 33311C Coaxial Switch Positions with Four lest Sets
HP 33311 C Coaxial Switch
New ADDRESS of
Test Set
20 21 22 3 23
Figure 3-6. RF and IF Switching with Four Test Sets
lest Set
Selected
1
2 4
Port Selected
Switch
#l
Switch
Port 1 Port 1 Port 1 Port 2 Port 2 Port 2 Port 2
Port 1
#2
3-10
Operation
HP 8514B/85lZA Test Sets

Cable and Anti-Rotation Clamp Installation

The HP 08515-60003 Anti-Rotation Clamps are used to secure the RF connections at the test ports of several Hewlett-Packard test sets. When installed, each clamp holds the large nut that secures the test set RF port connector to the front panel, and the RF cable connector or the front panel adapter mated with the port connector.
Without the clamps, the test port connections may become loose after moving the connected device
and could invalidate calibrations and measurements.
NOTE:
Although the anti-rotation clamps may be used with front panel adapters, these instructions
refer to an installation using the HP RF Cables. Adapter installations will be similar.
1.
Two anti-rotation clamps are included in the test set accessories box. Remove one from the box and loosen the thumbscrew until it is almost out of the counter-bored hole in the clamp body.
Gently push the clamp (round-hole end first) over and past the RF cable connector you will connect to the test set RF port. The rubber O-ring in the round end of the clamp will fit tightly over the connector. Wiggle the clamp if necessary to get it over the connector.
Connect the cable to the test port and tighten as specified in the cable manual. Make sure that you do not twist the cable as you attach it to the test port. Use the torque wrench supplied with your calibration kit to tighten the cable to no more than 90 N-cm (8 in.-lb.).
2.
Important! The test set RF connector is easily loosened so hold the RF cable throughout the rest of
this procedure. Do not allow the cable to rotate.
3.
See Figure 3-7. Turn the clamp so that the thumbscrew is pointing up. From there, turn the clamp to visually align the clamp flats with the flats on the test port connector nut. This will minimize rotating the connector in the next step.
NOTE:
The flats may be in any orientation in respect to the front panel.
MAKE
SURE
ON REAR OF
PARALLEL
OF
TEST SET CONNECTOR
FLAT
SURFACE
CABLE CLAMP
WITH
FIAT
IS
SURFACE
HP
8514B/85l2A
Test Sets
FRONT
TEST SET CONNECTOR
VIEW
OF
Figure 3-7. Visually Aligning Clamp and Nut Flats
FRONT VIEW
CABLE
CLAMP
OF
Operation
3-11
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