Agilent Technologies 8511B Service manual

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Agilent Technologies 8511B
Frequency Converter Test Set
Operating and Service
Manual
Agilent Part Number: 08511-90073
Printed in USA November 2001
Supersedes November 1999

ii Agilent 8511B Test Set Operating and Service Manual
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, including, 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.
Agilent assumes no responsibility for the use or reliability of its software on
equipment that is not furnished by Agilent.
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 prior
written consent of Agilent Technologies.
Hewlett-Packard to Agilent Technologies Transition
This documentation supports a product that previously shipped under the
Hewlett-Packard company brand name. The brand name has now been
changed to Agilent Technologies. The two products are functionally
identical, only our name has changed. The document still includes references
to Hewlett-Packard products, some of which have been transitioned to
Agilent Technologies.
Restricted Rights Legend
Use, duplication, or disclosure by the U.S. Government is subject to
restrictions as set forth in subparagraph (c)(1)(ii) of the Rights in Technical
Data and Computer Software clause at DFARS 252.227-7013 for DOD
agencies, and subparagraphs (c)(1) and (c)(2) of the Commercial Computer
Software Restricted Rights clause at FAR 52.227-19 for other agencies.
© Copyright Agilent Technologies, Inc. 1999, 2001

Agilent 8511B Test Set Operating and Service Manual iii
What You’ll Find in This Manual…
Chapter 1 •General Information
Chapter 2 •Specifications
Chapter 3 •Installation
Chapter 4 •Operations
Chapter 5 •Performance Tests
Chapter 6 •Test Set Troubleshooting
Chapter 7 •Replacement Procedures
Chapter 8 •Replaceable Parts

iv Agilent 8511B Test Set Operating and Service Manual
Warranty
Certification Agilent Technologies certifies that this product met its published
specifications at the time of shipment from the factory. Agilent further
certifies that its calibration measurements are traceable to the United States
National Institute of Standards and Technology (NIST, formerly NBS), to the
extent allowed by the Institute’s calibration facility, and to the calibration
facilities of other International Standards Organization members.
Warranty This Agilent system product is warranted against defects in materials and
workmanship for a period corresponding to the individual warranty periods
of its component products. Instruments are warranted for a period of one
year. During the warranty period, Agilent will, at its option, either repair or
replace products that prove to be defective.
Warranty service for products installed by Agilent and certain other products
designated by Agilent will be performed at Buyer’s facility at no charge
within Agilent service travel areas. Outside Agilent service travel areas,
warranty service will be performed at Buyer’s facility only upon Agilent’s
prior agreement and Buyer shall pay Agilent’s round trip travel expenses. In
all other areas, products must be returned to a service facility designated by
Agilent.
For products returned to Agilent for warranty service, Buyer shall prepay
shipping charges to Agilent and Agilent shall pay shipping charges to return
the product to Buyer. However, Buyer shall pay all shipping charges, duties,
and taxes for products returned to Agilent from another country.
Agilent warrants that its software and firmware designated by Agilent for
use with an instrument will execute its programming instructions when
properly installed on that instrument. Agilent does not warrant that the
operation 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. AGILENT
SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OR
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

Agilent 8511B Test Set Operating and Service Manual v
EXCLUSIVE REMEDIES. THE REMEDIES PROVIDED HEREIN ARE
BUYER’S SOLE AND EXCLUSIVE 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.
Assistance Product maintenance agreements and other customer assistance agreements
are available for Agilent products.
For assistance, call your local Agilent Sales and Service Office (refer to
“Service and Support” on page vi).

vi Agilent 8511B Test Set Operating and Service Manual
Service and Support
Any adjustment, maintenance, or repair of this product must be performed
by qualified personnel. Contact your customer engineer through your local
Agilent Service Center. By internet, phone, or fax, get assistance with all
your test and measurement needs.
Online assistance: www.agilent.com/find/assist
United States
(tel) 1 800 452 4844 Latin America (tel) [phone]
(fax) [phone]
New Zealand
(tel) 0 800 738 378
(fax) ([phone]
Japan
(tel) ([phone]
(fax) ([phone]
Malaysia
(tel) 1 800 828 848
(fax) 1 800 801 664
Philippines
(tel) (632) 8426802
(tel) (PLDT subscriber only):
1 800 16510170
(fax) (632) 8426809
(fax) (PLDT subscriber only):
1 800 16510288
Taiwan
(tel) 0800-047-866
(fax) (886) 2 25456723
People’s Republic of China
(tel) (preferred): 800-810-0189
(tel) (alternate): 10800-650-0021
(fax) 10800-650-0121

Agilent 8511B Test Set Operating and Service Manual vii
Safety and Regulatory Information
Review this product and related documentation to familiarize yourself with
safety markings and instructions before you operate the instrument. This
product has been designed and tested in accordance with international
standards.
WARNING The WARNING notice denotes a hazard. It calls attention to a procedure,
practice, or the like, that, if not correctly performed or adhered to, could result
in personal injury. Do not proceed beyond a WARNING notice until the
indicated conditions are fully understood and met.
CAUTION The CAUTION notice denotes a hazard. It calls attention to an operating
procedure, practice, or the like, which, if not correctly performed or adhered
to, could result in damage to the product or loss of important data. Do not
proceed beyond a CAUTION notice until the indicated conditions are fully
understood and met.
Instrument Markings
When you see this symbol on yourinstrument, you should refer to the instrument’s
instruction manual for important information.
This symbol indicates hazardous voltages.
The laser radiation symbol is marked on products that have a laser output.
This symbol indicates that the instrument requires alternating current (ac) input.
The CE mark is a registered trademark of the European Community. If it is
accompanied bya year, itindicates the year the design was proven.
The CSA mark is a registered trademark of the Canadian Standards Association.
1SM1-A This text indicates that the instrument is an Industrial Scientificand Medical Group 1
Class A product (CISPER 11, Clause 4).
This symbol indicates that the power line switch is ON.
This symbol indicates that the power line switch is OFF or in STANDBY position.
!

viii Agilent 8511B Test Set Operating and Service Manual
Safety Earth
Ground This is a Safety Class I product (provided with a protective earthing
terminal). An uninterruptible safety earth ground must be provided from the
main power source to the product input wiring terminals, power cord, or
supplied power cord set. Whenever it is likely that the protection has been
impaired, the product must be made inoperative and secured against any
unintended operation.
Before Applying Power Verify that the product is configured to match the available main power
source as described in the input power configuration instructions in this
manual. If this product is to be powered by autotransformer, make sure the
common terminal is connected to the neutral (grounded) side of the ac power
supply.

Agilent 8511B Test Set Operating and Service Manual ix
DECLARATION OF CONFORMITY
According to ISO/IEC Guide 22 and CEN/CENELEC EN 45014
Manufacturer’s Name: Agilent Technologies, Inc.
Manufacturer’s Address: 1400 Fountaingrove Parkway
Santa Rosa, CA 95403-1799
USA
Declares that the products
Product Name: Frequency Converter
Model Number: 8511A, 8511B
Product Options: This declaration covers all options of the above
products.
Conform to the following product specifications:
Standard Limit
EMC: CISPR 11:1990 / EN 55011-1991 Group 1, Class A
IEC 801-2:1984/EN 50082-1:1992 4 kV CD, 8 kV AD
IEC 801-3:1984/EN 50082-1:1992 3 V/m, 80 - 1000 MHz
IEC 801-4:1988/EN 50082-1:1992 0.5 kV sig., 1 kV power
Safety: IEC 61010-1:1990 + A1:1992 + A2:1995 / EN 61010-1:1993 +A2:1995
CAN/CSA-C22.2 No. 1010.1-92
Supplementary Information:
The products herewith comply with the requirements of the Low Voltage Directive
73/23/EEC and the EMC Directive 89/336/EEC and carry the CE-marking accordingly.
Santa Rosa, CA, USA 2 September 2000 Greg Pfeiffer/Quality Engineering Manager
For further information, please contact your local Agilent Technologies sales office, agent or distributor.

xAgilent 8511B Test Set Operating and Service Manual
Typeface Conventions
Italics •Used to emphasize important information:
Use this software only with the Agilent xxxxxX system.
•Used for the title of a publication:
Refer to the Agilent xxxxxX System-Level User’s Guide.
•Used to indicate a variable:
Type LOAD BIN filename.
Instrument Display •Used to show on-screen prompts and messages that you will see on the
display of an instrument:
The Agilent xxxxxX will display the message CAL1 SAVED.
[Keycap] •Used for labeled keys on the front panel of an instrument or on a
computer keyboard:
Press [Return].
{Softkey} •Used for simulated keys that appear on an instrument display:
Press {Prior Menu}.
User Entry •Used to indicate text that you will enter using the computer keyboard;
text shown in this typeface must be typed exactly as printed:
Type LOAD PARMFILE
•Used for examples of programming code:
#endif // ifndef NO_CLASS
Path Name •Used for a subdirectory name or file path:
Edit the file
usr/local/bin/sample.txt
Computer Display •Used to show messages, prompts, and window labels that appear on a
computer monitor:
The Edit Parameters window will appear on the screen.
•Used for menus, lists, dialog boxes, and button boxes on a computer
monitor from which you make selections using the mouse or keyboard:
Double-click EXIT to quit the program.

Contents
Agilent 8511B Test Set Operating and Service Manual Contents-1
Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
What You’ll Find in This Manual… . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv
Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv
Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
Service and Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi
Safety and Regulatory Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Safety Earth Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii
Before Applying Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii
Typeface Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x
1. General Information
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Figure 1-1. 8511B Test Set with Accessories Supplied . . . . . . . . . . . 1-2
Verifying the Agilent 8511B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Measurement Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Instrument Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Description and Characteristics of the Instrument . . . . . . . . . . . . . . . . . . 1-6
Figure 1-2. Measurement Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Software and Hardware Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Computer Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Option 001 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Option 908 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Option 910 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Option 913 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Service and Support Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Option W30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Option W31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Option 1BN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Option 1BP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
Accessories Supplied . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
Accessories Available . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
Calibration and Verification Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
Operating and Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
Electrostatic Discharge Information . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
Figure 1-3. Example of a Static-Safe Work Station . . . . . . . . . . . . . 1-12
Reducing ESD Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
Table 1-1. Static-Safe Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13

Contents-2 Agilent 8511B Test Set Operating and Service Manual
Operating Power Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
Table 1-2. Maximum Operating Power Level . . . . . . . . . . . . . . . . 1-13
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
Recommended Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
Miscellaneous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
2. Specifications
Specifications and Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Table 2-1. 8510/8511B Specifications . . . . . . . . . . . . . . . . . . . . . . . 2-1
Table 2-2. 8510/8511B Characteristics . . . . . . . . . . . . . . . . . . . . . . 2-2
Dynamic Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Figure 2-1. Worst Case Dynamic Accuracy (Magnitude) . . . . . . . . 2-3
Figure 2-2. Worst Case Dynamic Accuracy (Phase) . . . . . . . . . . . . 2-3
Table 2-3. 8510/8511B Characteristics (continued) . . . . . . . . . . . . 2-4
Specification Assumptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Recommended Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Table 2-4. Recommended Test Equipment . . . . . . . . . . . . . . . . . . . . 2-6
3. Installation
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Initial Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Table 3-1. Contents of the 8511B Shipping Container . . . . . . . . . . 3-1
Environmental Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Operation and Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Preparation for Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Installing the Test Set in a System Rack . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Figure 3-1. Attaching Rack-Mounting Hardware . . . . . . . . . . . . . . 3-4
Installing the Test Set on a Bench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Connecting the Test Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Mating Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Power and Control Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Signal Path Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Connecting the Test Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Figure 3-2. Connecting the Test Set in a System Configuration . . . . 3-7
Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
4. Operation
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Front Panel Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Figure 4-1. Front Panel Features of the Test Set . . . . . . . . . . . . . . . 4-1
Rear Panel Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Figure 4-2. Rear Panel Features of the Test Set . . . . . . . . . . . . . . . . 4-2
Operator’s Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Table 4-1. Necessary Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Agilent 8511B Test Set Operating and Service Manual Contents-3
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
a1 and b1 Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Figure 4-3. Hardware Configuration for Operator’s Check . . . . . . . 4-4
Figure 4-4. Typical Operator’s Check CRT Trace . . . . . . . . . . . . . . 4-5
a2 and b2 Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Controlling Multiple Test Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Figure 4-5. RF and IF Switching with Two Test Sets . . . . . . . . . . . . 4-7
Table 4-2. Agilent 33311C Coaxial Switch Positions with Two Test Sets
4-7
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Initialization at Power-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Selecting a Test Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Test Set Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
RF Switch Driver Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Figure 4-6. RF and IF Switching with Four Test Sets . . . . . . . . . . . 4-11
Table 4-3. Agilent 33311C Coaxial Switch Positions with Four Test Sets
4-11
Measurement Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
Operational Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
Performance Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
5. Performance Tests
Port Return Loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Test Procedure (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
6. Test Set Troubleshooting
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Figure 6-1. Simplified RF Block Diagram . . . . . . . . . . . . . . . . . . . . . 6-2
Equipment Needed but Not Supplied . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
Table 6-1. Needed Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
Troubleshooting Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Figure 6-2. Troubleshooting Flowchart . . . . . . . . . . . . . . . . . . . . . . 6-4
Troubleshooting Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Procedure 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
A15 Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Figure 6-3. Power Supply Fuses and Test Points . . . . . . . . . . . . . . . 6-5
A15 Primary Regulator Board Assembly . . . . . . . . . . . . . . . . . . . . . . 6-6
Table 6-2. Power Supply Voltages . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
GPIB Address Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Figure 6-4. Instrument GPIB Switch Setting . . . . . . . . . . . . . . . . . . . 6-6
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Procedure 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Self-Test Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Figure 6-5. Location of Self-Test Indicators . . . . . . . . . . . . . . . . . . . 6-8
Table 6-3. Self-Test Failure Indications . . . . . . . . . . . . . . . . . . . . . . . 6-9
If the Self-Test Fails to Run . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9

Contents-4 Agilent 8511B Test Set Operating and Service Manual
Procedure 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10
Agilent 85102 IF
Amplifier Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10
Figure 6-6. Service Adapter Connections . . . . . . . . . . . . . . . . . . . 6-10
Figure 6-7. Agilent 8511B RF Block Diagram . . . . . . . . . . . . . . . . 6-11
Figure 6-8. Agilent 8511B Control Block Diagram . . . . . . . . . . . . 6-13
Figure 6-9. Agilent 8511B Motherboard Wiring List (1 of 2) . . . . 6-15
Figure 6-10. Agilent 8511B Motherboard Wiring List (2 of 2) . . . 6-17
7. Replacement Procedures
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Equipment Needed But Not Supplied . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Table 7-1. Equipment Needed to Replace Test Set Major Assemblies . .
7-1
Figure 7-1. Assembly Location Diagram . . . . . . . . . . . . . . . . . . . . . 7-2
Preliminary Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
(1) Replacing the Frequency Converter . . . . . . . . . . . . . . . . . . . . . . 7-4
(2) Replacing the Regulator Board Assembly . . . . . . . . . . . . . . . . . 7-4
(3) Replacing the Filter Capacitors . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4
(4) Repairing a
2.4 mm RF Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6
Figure 7-2. Exploded Diagram of a 2.4 mm Connector . . . . . . . . . . 7-6
(5) Replacing the
B1 Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7
(6) T1 Power Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
Figure 7-3. Wire Connections to the Line Module FL1 . . . . . . . . . . 7-8
8. Replaceable Parts
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Replaceable Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Reference Designations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Exchange Assemblies Available . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
Figure 8-1. Low Cost Rebuilt-Exchange Procedure . . . . . . . . . . . . . 8-3
Figure 8-2. Major Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
Figure 8-3. Semi-Rigid Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
Figure 8-4. Flexible RF Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6
Figure 8-5. Detailed Views of Rear Panel Miscellaneous Parts . . . 8-7
Figure 8-6. Miscellaneous Motherboard Parts . . . . . . . . . . . . . . . . 8-8
Replaceable Parts Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9
Table 8-1. Agilent 8511B Replaceable Parts . . . . . . . . . . . . . . . . . . 8-9
Figure 8-7. Parts Unique to Option 001 . . . . . . . . . . . . . . . . . . . . 8-12
Table 8-2. Replaceable Parts for Agilent 8511B Option 001 . . . . . 8-13

Agilent 8511B Test Set Operating and Service Manual 1-1
1General Information
Introduction This manual for the Agilent 8511B frequency converter test set is used in
conjunction with the Agilent 8510 network analyzer manual set. These
manuals provide the information needed to properly configure your system
and make measurements.
NOTE The 8511B manual may be inserted into the 8510 test sets and accessories
binder that was provided with your 8510 manual set.
The 8511B Operating portion consists of:
•General Information
•Specifications
•Installation
•Operation
•Performance Tests
The 8511B Service portion consists of:
•Troubleshooting
•Replacement procedures
•Replaceable parts
First. Read the chapters titled “General Information” and “Installation.”
These chapters include information on site preparation, unpacking and
inspecting your instrument for damage, safety considerations, and
configuring your test set to the 8510.
Second. Read the chapters of the Agilent 85056 Calibration Kit Manual, that
pertain to the care, cleaning, gaging, and connection of precision 2.4 mm
devices. This information will help you make good connections and care for
your precision devices, and to maintain the performance of your test set and
network analyzer system.
Third. Read the chapter titled “Operation.” This chapter will acquaint you
with the front and rear panel features of your test set. Also included is
information on controlling multiple test sets, using the anti-rotation clamps,
and connecting devices to the test set.

1-2 Agilent 8511B Test Set Operating and Service Manual
General Information
Figure 1-1 8511B Test Set with Accessories Supplied

Agilent 8511B Test Set Operating and Service Manual 1-3
General Information
Verifying the Agilent 8511B
Verifying the Agilent 8511B
The Agilent 8511B has been designed to operate specifically with the 8510
network analyzer.
•To install the instrument, turn to Chapter 3, “Installation”.
•To verify that the instrument meets its published specifications, use the
Agilent 8511A,B and Antenna Measurement System Performance
Verification Software (part number 08511-60024).
•To troubleshoot the test set, refer to the troubleshooting information in
the Agilent 8510 On-Site Service Manual. This will determine if the test
set is at fault. Then refer to Chapter 6, “Test Set Troubleshooting” for
more information.

1-4 Agilent 8511B Test Set Operating and Service Manual
General Information
Measurement Accuracy
Measurement Accuracy
Any precision measurement is no better than the calibration of the network
analyzer. As a general rule, the shorter the time between a calibration and the
measurement of a device under test (DUT), the more precise the
measurement will be, within the limitations of your system. For this reason,
Agilent recommends that for precision measurements you recalibrate your
system every few hours, or at a minimum, reverify your system calibration.
The frequency of your required calibration will depend on the temperature
stability of the location of the network analyzer.

Agilent 8511B Test Set Operating and Service Manual 1-5
General Information
Instrument Compatibility
Instrument Compatibility
The Agilent 8511B is compatible with all 8510 network analyzers. Agilent
836XX-series sources must have a frequency range that extends to 50 GHz
to take full advantage of the frequency range of the 8511B. If your network
analyzer and/or source do not fulfill the required conditions, it will be
necessary to upgrade your system. Please consult your Agilent
representative for more information.