Keysight (Agilent) 8493A Service Manual

8490D
8491A/B
8493A,B,C
Coaxial Fixed Attenuators

11581/2A
11583C
Attenuator Sets

Operating and Service
Manual

Agilent Part Number: 08491-90077
Printed in USA
December 2001

Supersedes: July 2001

Notice

The information containe d in this doc ument 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 Technologie s
shall not be liable for errors contained herein or for incidental or
consequential damage s in connection with the furnishing, performance, or
use of this material.

Agilent Technologies assumes no responsibility for the use or reliability of
its software on equipment that is not furnished by Agilent Technologies.

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 langu age without prior
written consent of 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 subparagr aphs (c)(1) and (c)(2) of the Commercial Computer
Software Restricted Rights clause at FAR 52.227-19 for other agencies.

Agilent Technologies, Inc

© Copyright 1994, 1999, 2001 Agilent Technologies, Inc

ii 849x and 1158x Attenuator Sets 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 Technologies 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 calibrati on facility,
and to the calibration facilities of other International Standards Organization members.

W arran ty This Agilent Technologies system product is warranted against defects in

materials and workmanship for a period corresponding to the individual
warranty perio ds of its component prod ucts. Instruments are warranted fo r a
period of one year. During the warranty period, Agil ent Technologies will, a t
its option, either repair or replace products that prove to be defective.

W arr anty se rvice for produc ts insta lled b y Agilent a nd cert ain othe r produc ts

designated by Agilent will be perfor med at Buyer’s facilit y at no charge
within Agilent servic e travel areas. Outside Agilent se rvice travel areas,
warranty service will be perfor med at Buyer’s facility only upon Agilent’s
prior agreement and Buyer shall pay Agilent’s round trip travel expe nses. In
all other areas, products must be returned to a se rvice facility designa ted by
Agilent.

For products returned to Agilent for warranty service, Buyer sha ll pr ep ay
shipping char ges t o Agi lent a nd Agilent Agilent shall pay shi pping char ges t o
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 firmwar e designated by Agilent for
use with an instrument will execu te it s programming instructions when
properly install ed on that instrument. Agilent does not warrant that the
operation of the instru ment, 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 modific at ion or
misuse, operation outside of the environmental specifications for the
product, or improper site prepa ration or maintenance.

NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. AGILENT
SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OR
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

849x and 1158x Attenuator Sets Operating and Service Manual iii

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 ma int enance agreeme nts an d oth er cus tom er as s istan c e ag reem ents

are available for Agilent Technologies products.
For assistance, call your local Agilent Technologies Sales and Service Offic e

(refer to “Service and Support” on page iv).

Service and Support

Online assistance: www.agilent.com/find/assist

United S t ates

(tel) 1 800 452 4844

New Zealand

(tel) 0 800 738 378
(fax) ([phone]

Country Phone Number Fax Number

Singapore 1-800-375-8100 (65) 836-0252
Malaysia 1-800-828-848 1-800-801664
Philippines (632) 8426802

Thailand [phone] (outside Bangkok)

Hong Kong 800-930-871 (852) 2506 9233
Taiwan 0800-047-866 (886) 2 25456723

Latin America

(tel) (305) 269 750 0
(fax) [phone]

Japan

(tel) ([phone]
(fax) ([phone]

Asia Call Center Numbers

1-800-16510170 (PLDT
Subscriber O n ly)

[phone] (wit hin Bang k ok )

Canada

(tel) 1 877 894 4414
(fax) [phone]

Australia

(tel) 1 800 629 485
(fax) ([phone]

(632) 8426809
1-800-16510288 (PLDT
Subscriber Only)

(66) 1-661-3714

Europe

(tel) ([phone]
(fax) ([phone]

People’s Republic
of China

India 1-600-11-2929 000-800-650-1101

800-810-0189 (preferred)
10800-650-0021

10800-650-0121

iv 849x and 1158x Attenuator Sets Operating and Service Manual

Safety and Regulato ry Information

Review this product and related documentation to familiarize yourself with
safety markings and instr uct ions before you operate the instr ument. This
product has been designed and teste d in acc ordance with international
standards.

WARNING The WAR NING notice denotes a hazard. It cal ls attention to a procedure,

practice, or th e like, that, if not cor rectly performed or adhered to, could result
in personal injury. Do not proceed beyond a WARNING noti ce 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 correctl y performed or adhered
to, could r esult in damage to the product or loss of important data. Do not
proceed beyond a CAUTION notice until the indicat ed conditions are fully
understood and m et.

Instrument Markings

When you see this symbol on your instrument, you should refer to the instrument’s

!

1SM1-A This text indicates that the instrument is an Industrial Scientific and Medical Group 1

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 by a year, it ind icates the year the design was proven.

The CSA mark is a registered trademark of the Canadian Standards Association.

Class A product (CISPER 11, Clause 4).
This symbol indicates that the power line switch is ON.

This symbol indicates that the power line s witch is OFF or in STANDBY position.

849x and 1158x Attenuator Sets Operating and Service Manual v

Safety Earth Ground

This is a S afety Class I product (provided with a protective earthing
terminal). An uninterruptible safe ty earth ground must be provid ed from the
main power source to the product input wiring terminals, power cord, or
supplied power cord set. Whenever it is like ly 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 m atch 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 connecte d t o the n eutral (groun ded) side of th e ac powe r
supply .

vi 849x and 1158x Attenuator Sets Operating and Service Manual