Agilent Technologies 8156A Operating instructions

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Agilent Technologies GmbH

Herrenberger Str. 130

71034 Böblingen

Germany

Notices

Technologies Deutschland GmbH.

No part of this manual may be

reproduced in any form or by any

means (including electronic

storage and retrieval or translation

into a foreign language) without

prior agreement and written

consent from Agilent Technologies,

Inc. as governed by United States

and international copyright laws.

Warranty

The material 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.

Edition/Print Date

All Editions and Updates of this

manual and their creation dates are

listed below.

08156-91011: E0500

Second Edition ………… May 2000

First Edition W0194, E0694, E0696,

E1098

Assistance

Product maintenance agreements

and other customer assistance

agreements are available for

Agilent Technologies products.

For any assistance, contact your

nearest Agilent Technologies Sales

and Service Office (see “Service

and Support” on page 9).

ISO 9001 Certification

Produced to ISO 9001 international

quality system standard as part of

Agilent Technologies’objective of

continually increasing customer

satisfaction through improved

process control.

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The following general safety precautions must be observed during

all phases of operation of this instrument. Failure to comply with

these precautions or with specific warnings elsewhere in this

manual violates safety standards of design, manufacture, and

intended use of the instrument. Agilent Technologies assumes no

liability for the customer’s failure to comply with these

requirements.

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This product is a Safety Class 1 instrument (provided with a

protective earth terminal). The protective features of this product

may be impaired if it is used in a manner not specified in the

operation instructions.

All Light Emitting Diodes (LEDs) used in this product are Class 1

LEDs as per IEC 60825-1.

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This instrument is intended for indoor use in an installation category

II, pollution degree 2 environment. It is designed to operate at a

maximum relative humidity of 95% and at altitudes of up to 2000

meters. Refer to the specifications tables for the ac mains voltage

requirements and ambient operating temperature range.

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Verify that the product is set to match the available line voltage, the

correct fuse is installed, and all safety precautions are taken. Note

the instrument’s external markings described under Safety Symbols.

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To minimize shock hazard, the instrument chassis and cover must

be connected to an electrical protective earth ground. The

instrument must be connected to the ac power mains through a

grounded power cable, with the ground wire firmly connected to an

electrical ground (safety ground) at the power outlet. Any

interruption of the protective (grounding) conductor or

disconnection of the protective earth terminal will cause a potential

shock hazard that could result in personal injury.

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Only fuses with the required rated current, voltage, and specified

type (normal blow, time delay, etc.) should be used. Do not use

repaired fuses or short-circuited fuse holders. To do so could cause

a shock or fire hazard.

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Do not operate the instrument in the presence of flammable gases or

fumes.

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Operating personnel must not remove instrument covers.

Component replacement and internal adjustments must be made

only by qualified service personnel.

Instruments that appear damaged or defective should be made

inoperative and secured against unintended operation until they can

be repaired by qualified service personnel.

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•Adjustments described in this manual are performed with power

supplied to the instrument while protective covers are removed.

Be aware that energy at many points, if contacted, result in

personal injury.

•Do not install substitute parts or perform any unauthorized

modification to the instrument.

•Be aware that capacitors inside the instrument may still be

charged even if the instrument has been connected from its

source of supply.

:$51,1* To avoid hazardous electrical shock, do not operate the instrument

if there are any signs of damage to any portion of the outer

enclosure (covers, panels, and so on).

:$51,1* To avoid the possibility of injury or death, you must observe the

following precautions before powering on the instrument.

–If this instrument is to be energized via an autotransformer for

voltage reduction, ensure that the Common terminal connects

to the earthed pole of the power source.

–Insert the power cable plug only into a socket outlet provided

with a protective earth contact. Do not negate this protective

action by the using an extension cord without a protective

conductor.

–Before switching on the instrument, the protective earth

terminal of the instrument must be connected to a protective

conductor. You can do this by using the power cord supplied

with the instrument.

–It is prohibited to interrupt the protective earth connection

intentionally.

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•The following work should be carried out by a qualified

electrician. All local electrical codes must be strictly observed:

If the plug on the cable does not fit the power outlet, or if the cable

is to be attached to a terminal block, cut the cable at the plug end

and rewire it.

The color coding used in the cable depends on the cable supplied. If

you are connecting a new plug, it should meet the local safety

requirements and include the following features:

•Adequate load-carrying capacity (see table of specifications).

•Ground connection.

•Cable clamp.

:$51,1* To avoid the possibility of injury or death, please note that the

Agilent 8156A does not have a floating earth.

:$51,1* The Agilent 8156A is not designed for outdoor use. To prevent

potential fire or shock hazard, do not expose the instrument to rain

or other excessive moisture.

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:$51,1* The WARNING sign denotes a hazard. It calls attention to a

procedure, practice, or the like, which, if not correctly performed or

adhered to, could result in personal injury. Do not proceed beyond a

WARNING sign until the indicated conditions are fully understood

and met.

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&$87,21 The CAUTION sign denotes a hazard. It calls attention to an

operating procedure, or the like, which, if not correctly performed

or adhered to, could result in damage to or destruction of part or all

of the product. Do not proceed beyond a CAUTION sign until the

indicated conditions are fully understood and met.

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This manual is divided into 4 parts:

•Chapter 1 tells you how to set up your Attenuator.

•Chapters 2 to 6 shows you what you can do with your Attenuator.

•Chapters 7 to 9 show you how you can remotely program your

Attenuator, using GPIB commands.

•The appendices contain additional information not required for

routine day-to-day use.

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

performed by qualified personnel. Contact your customer engineer

through your local Agilent Technologies Service Center. You can

find a list of local service representatives on the Web at:

http://www.agilent-tech.com/services/English/index.html

If you do not have access to the Internet, one of these centers can

direct you to your nearest representative:

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