Agilent Technologies 355C Manual de servicio

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Agilent Technologies

355C, D, E, F

VHF Attenuators

Operating and Service

Manual

Agilent Part Number: 00355-90051

Printed in USA

April 2002

Supersedes: November 2001

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ii VHF Attenuators 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 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.

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

photocopied, reproduced, or translated to another language 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 subparagraphs (c)(1) and (c)(2) of the Commercial Computer

Software Restricted Rights clause at FAR 52.227-19 for other agencies.

Serial Number Preﬁx

The speciﬁcations in this manual apply to the instruments with the following

serial numbers or greater:

Model Serial Numbers (min.)

355C 2524A44630

355D 2522A46649

355E 1205A38159

355F 1203A03244

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VHF Attenuators Operating and Service Manual iii

What You’ll Find in This Manual…

This operating and service manual contains the following:

•Instrument Description and Speciﬁcations

•Replaceable Parts and Accessories

•Installation Instructions

•Operating Instructions

•Schematics and Diagrams

Warranty

Custom systems are warranted by contractual agreement between Agilent

Technologies and the Customer.

Certiﬁcation Agilent Technologies certifies that this product met its published specifications at the time of

shipment from the factory.

Documentation

Warranty THE MATERIAL CONTAINED IN THIS DOCUMENT IS

PROVIDED "AS IS," AND IS SUBJECT TO BEING CHANGED,

WITHOUT NOTICE, IN FUTURE EDITIONS. FURTHER, TO

THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW,

AGILENT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS

OR IMPLIED WITH REGARD TO THIS MANUAL AND ANY

INFORMATION CONTAINED HEREIN, INCLUDING BUT NOT

LIMITED TO THE IMPLIED WARRANTIES OF

MERCHANTABILITY AND FITNESS FOR A PARTICULAR

PURPOSE. AGILENT SHALL NOT BE LIABLE FOR ERRORS

OR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES IN

CONNECTION WITH THE FURNISHING, USE, OR

PERFORMANCE OF THIS DOCUMENT OR ANY

INFORMATION CONTAINED HEREIN. SHOULD AGILENT

AND THE USER HAVE A SEPARATE WRITTEN AGREEMENT

WITH WARRANTY TERMS COVERING THE MATERIAL IN

THIS DOCUMENT THAT CONFLICT WITH THESE TERMS,

THE WARRANTY TERMS IN THE SEPARATE AGREEMENT

WILL CONTROL.

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iv VHF Attenuators Operating and Service Manual

Assistance Product maintenance agreements and other customer assistance agreements

are available for Agilent Technologies products.

For assistance, call your local Agilent Technologies Sales and Service Ofﬁce

(refer to “Support and Service”).

Support and Service

Any adjustment, maintenance, or repair of this product must be performed

by qualiﬁed personnel. contact your local Agilent Technologies sales and

service ofﬁce.

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

United States

(tel) 1 800 452 4844 Latin America

(tel) (305) 269 7500

(fax) (305) 269 7599

Canada

(tel) 1 877 894 4414

(fax) (905) 282-6495

New Zealand

(tel) 0 800 738 378

(fax) (+64) 4 495 8950

Japan

(tel) (+81) 426 56 7832

(fax) (+81) 426 56 7840

Australia

(tel) 1 800 629 485

(fax) (+61) 3 9210 5947

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

Thailand

(tel) outside Bangkok:

(088) 226 008

(tel) within Bangkok:

(662) 661 3999

(fax) (66) 1 661 3714

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

India

(tel) 1-600-11-2929

(fax) 000-800-650-1101

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VHF Attenuators Operating and Service Manual v

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 instruments an Industrial Scientiﬁc and Medical Group 1

Class A product (CISPER 11, Clause 4).

This ISM device complies with Canadian ICES-001.

Cet appareil ISM est conforme a la norme NMB du Canada.

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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vi VHF Attenuators 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.

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VHF Attenuators Operating and Service Manual vii

Typeface Conventions

Italics •Used to emphasize important information:

Use this software only with the xxxxxX system.

•Used for the title of a publication:

Refer to the 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 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.

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viii VHF Attenuators Operating and Service Manual

Typeface Conventions

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VHF Attenuators Operating and Service Manual 1

General Information

This manual contains operating instructions for 355C, 355D, 355E, and

355F VHF Attenuators. Included in the manual is the information required

to install and test these attenuators.

Description The Agilent Technologies Model 355C, 355D, 355E, and 355F attenuators

are 50-ohm, coaxial step attenuators usable from dc to 1 GHz. Models 355C

and 355E provide 0 to 12 dB of attenuation in 1 dB steps.

Models 355D and 355F provide 0 to 120 dB of attenuation in 10 dB steps.

The 355C and 355D are manual attenuators. The 355E and 355F are

programmable. The schematic for the Model 355C/D is shown in Figure 1,

and that of the Model 355E/F in Figure 2.

The attenuator sections consist of resistor pi networks which are switched in

or bypassed by microswitches. In the 355C and 355D, the microswitches

are actuated by cams (see Figure 1). In the 355E and 355F, the

microswitches are actuated by solenoids (see Figure 2). The standard RF

connectors are BNC type.

In the 355E and 355F, power must be continuously applied to the solenoid to

actuate the microswitch (i.e., to insert an attenuator section). Each solenoid

draws approximately 0.lA at 15 Vdc.

Dimensions for the individual instruments are provided in Table 1,

“Dimensions,” on page 2.

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