Keysight 775D Service manual

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Keysight 775D
Dual Directional Couplers
Operating and
Service Manual

ii 775D Operating And Service Manual
Notice
The information contained in this document is subject to change without
notice.
Keysight 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. Keysight Technologies
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.
Keysight Technologies assumes no responsibility for the use or reliability of
its software on equipment that is not furnished by Keysight 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 language without prior
written consent of Keysight 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.
Keysight Technologies
1400 Fountaingrove Parkway
Santa Rosa, CA 95403-1799, U.S.A.

775D Operating And Service Manual iii
In This Manual…
•Overview, page 1
•Specifications, page 2
•Unpacking and Setup, page 3
•Applications, page 6
•Performance Tests, page 10
•Directivity Test, page 12
•Primary-Line SWR Test, page 14
•Swept-Frequency Test, page 14
•Fixed-Frequency Test, page 15
•Auxiliary Arm SWR Test, page 17
•Fixed-Frequency Auxiliary-Arm SWR Test, page 19
•Coupling Test, page 21
•Insertion Loss Test, page 23

iv 775D Operating And Service Manual
Warranty
Custom systems are warranted by contractual agreement between
Keysight Technologies and the customer.
Certification Keysight Technologies certifies that this product met its published
specifications at the time of shipment from the factory. Keysight
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
calibration facility, and to the calibration facilities of other International
Standards Organization members.
Warranty This Keysight Technologies 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, Keysight Technologies will,
at its option, either repair or replace products that prove to be defective.
Warranty service for products installed by Keysight Technologies and
certain other products designated by Keysight Technologies will be
performed at Buyer’s facility at no charge within Keysight Technologies
service travel areas. Outside Keysight Technologies service travel areas,
warranty service will be performed at Buyer’s facility only upon Keysight
Technologies’ prior agreement and Buyer shall pay Keysight Technologies’
round trip travel expenses. In all other areas, products must be returned to a
service facility designated by Keysight Technologies.
For products returned to Keysight Technologies for warranty service, Buyer
shall prepay shipping charges to Keysight Technologies and Keysight
Technologies shall pay shipping charges to return the product to Buyer.
However, Buyer shall pay all shipping charges, duties, and taxes for products
returned to Keysight Technologies from another country.
Keysight Technologies warrants that its software and firmware designated
by Keysight Technologies for use with an instrument will execute its
programming instructions when properly installed on that instrument.
Keysight Technologies 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.

775D Operating And Service Manual v
NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. KEYSIGHT
TECHNOLOGIES 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. KEYSIGHT
TECHNOLOGIES SHALL NOT BE LIABLE FOR ANY DIRECT,
INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER LEGAL
THEORY.
YEAR 2000. Keysight Technologies warrants that each Keysight Technologies
hardware, software, and firmware product on Keysight Technologies’
Corporate Price List (dated July 1, 1998 or later) delivered under the product’s
contract of sale will be able to accurately process date data
(including, but not limited to, calculating, comparing, and sequencing) from,
into, and between the twentieth and twenty-first centuries, and the years 1999
and 2000, including leap year calculations, when used in accordance with the
product documentation provided that all other products (that is, hardware,
software, firmware) used in combination with such Keysight Technologies
product(s) properly exchange date data with it. If the agreement requires that
specific Keysight Technologies products must perform as a system in
accordance with the foregoing warranty, then that warranty will apply to those
Keysight Technologies products as a system, and Customer retains sole
responsibility to ensure the year 2000 readiness of its information technology
and business environment. The duration of this warranty extends through
January 31, 2001.
The remedies available under this warranty will be defined in, and subject to,the
terms and limitations of the warranties contained in the contract of sale. To the
extent permitted by local law, this warranty applies only to branded Keysight
Technologies products and not to products manufacture by others that may be
sold or distributed by Keysight Technologies. Nothing in this warranty will be
construed to limit any rights or remedies provided elsewhere in the contract of
sale with respect to matters other than year 2000 compliance.
Assistance Product maintenance agreements and other customer assistance agreements
are available for Keysight Technologies products.
For assistance, call your local Keysight Technologies Sales and Service
Office (refer to “Service and Support” on page vi).

vi 775D Operating And Service Manual
Service and Support
By internet, phone, or fax, get assistance with all your test and measurement needs.
Online assistance: www.keysight.com/find/assist
United States
(tel) 1 800 452 4844 Latin America (tel) [phone]
(fax) [phone]
Canada
(tel) 1 877 894 4414
(fax) [phone]
Europe
(tel) ([phone]
(fax) ([phone]
New Zealand
(tel) 0 800 738 378
(fax) ([phone]
Japan
(tel) ([phone]
(fax) ([phone]
Australia
(tel) 1 800 629 485
(fax) ([phone]
Asia Call Center Numbers
Country Phone Number Fax Number
Singapore 1-800-375-8100 (65) 836-0252
Malaysia 1-800-828-848 1-800-801664
Philippines (632) 8426802
1-800-16510170 (PLDT Subscriber Only) (632) 8426809 1-800-16510288 (PLDT
Subscriber Only)
Thailand [phone] (outside Bangkok)
[phone] (within Bangkok) (66) 1-661-3714
Hong Kong 800-930-871 (852) 2506 9233
Taiwan 0800-047-866 (886) 2 25456723
People’s Republic of
China 800-810-0189 (preferred) 10800-650-0021 10800-650-0121
India 1-600-11-2929 000-800-650-1101

775D 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 your instrument, 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 by a year, it indicates 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 Scientific and 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.
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