Agilent Technologies 1142A Manuale utente

Agilent Technologies

Agilent 1142A

Probe Control and

Power Module

User’s Guide

Notices

No part of this manual may be reproduced in

any form or by any means (including elec-

tronic storage and retrieval or translation

into a foreign language) without prior agree-

ment and written consent from Agilent

Technologies, Inc. as governed by United

States and international copyright laws.

Manual Part Number

01142-97003

Edition

August 2014

Printed in Malaysia

Agilent Technologies, Inc.

1601 California Street

Palo Alto, CA 94304, USA

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 war-

ranties, 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 of any information con-

tained 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 agree-

ment shall control.

Technology Licenses

The hardware and/or software described in

this document are furnished under a license

and may be used or copied only in accor-

dance with the terms of such license.

Restricted Rights Legend

If software is for use in the performance of a

U.S. Government prime contract or subcon-

tract, Software is delivered and licensed as

"Commercial computer software" as

defined in DFAR 252.227-7014 (June 1995),

or as a "commercial item" as defined in FAR

2.101(a) or as "Restricted computer soft-

ware" as defined in FAR 52.227-19 (June

1987) or any equivalent agency regulation or

contract clause. Use, duplication or disclo-

sure of Software is subject to Agilent Tech-

nologies’ standard commercial license

terms, and non-DOD Departments and

Agencies of the U.S. Government will

receive no greater than Restricted Rights as

defined in FAR 52.227-19(c)(1-2) (June

1987). U.S. Government users will receive

no greater than Limited Rights as defined in

FAR 52.227-14 (June 1987) or DFAR

252.227-7015 (b)(2) (November 1995), as

applicable in any technical data.

Safety Notices

CAUTION. A CAUTION notice

denotes a hazard. It calls attention to

an operating procedure, practice, or the

like that, 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.

WARNING. A WARNING notice

denotes a hazard. It calls attention to

an operating procedure, practice, or

the like that, if not correctly per-

formed or adhered to, could result in

personal injury or death. Do not pro-

ceed beyond a WARNING notice until

the indicated conditions are fully

understood and met.

2 N2779A User’s Guide

1142A Probe Control and Power Module

1142A Probe Control and

Power Module

Using the 1142A 5

Safety Information 8

Performance Test 11

Specifications and Characteristics 13

Service 15

Replaceable Parts 19

Contacting Agilent 32

The 1142A supplies two sets of positive and negative

voltages for use by active probes. For the 1141A probe it

also supplies an offset current. Refer to the 1141A

Differential Probe and 1142A Probe Control and Power

Module User and Service Guide for more information.

Figure 1 1142A Probe Control and Power Module

1142A Probe Control and Power Module

Before connecting your Agilent probe to the 1142A, refer to the

probe’s user’s guide to learn how to perform measurements. This

manual contains information for use and service of the 1142A by

itself. It covers use of the 1142A as a power supply only and

service of the instrument in general. Use of the offset controls is

covered in the probe or oscilloscope manual.

Parts Supplied The following items are supplied with the 1142A.

■One power cord

■One operating and service guide

Accessories Available A fan- out adapter is available to power two probes with one

supply.

■Fan- out adapter, part number 01144- 61604

Instruments Covered by

Manual

The 1142A’s rear- panel serial number sticker is in the form:

0000A00000. The first four digits and letter are the serial prefix,

while the last five digits are the suffix. The prefix is the same for

all identical instruments, and it changes only when a change has

been made to the instrument. The suffix however, is assigned

sequentially and is different for each instrument. The contents of

this manual apply to instruments with the serial number prefixes

3050A.

1142A Probe Control and Power Module

Using the 1142A

This section of the manual contains information and

instructions for installation and use of the 1142A Probe

Control and Power Module as an auxiliary power supply. Use

of probe controls is covered in the guide for the probe.

Initial Inspection

1Inspect the shipping container for damage. Keep a damaged

shipping container or cushioning material until the contents

of the shipment have been checked for completeness and the

instrument has been checked mechanically and electrically.

2Check the accessories. If the contents are incomplete or

damaged notify your Agilent Technologies Sales Office.

3Inspect the instrument.

aIf there is mechanical damage or defect, or if the

instrument does not operate properly or pass performance

tests, notify your Agilent Technologies Sales Office.

bIf the shipping container is damaged, or the cushioning

materials show signs of stress, notify the carrier as well

as your Agilent Technologies Sales Office. Keep the

shipping materials for the carrier's inspection. The Agilent

Technologies Office will arrange for repair or replacement

at Agilent Technologies' option without waiting for claim

settlement.

1142A Probe Control and Power Module

Using the 1142A

Checking the Power

Requirements and Fuse

The power module requires a power source of either 115 Vac

or 230 Vac, 47 to 440 Hz, 25VA maximum.

CAUTION BEFORE CONNECTING POIWER TO THIS INSTRUMENT, be

sure the line voltage select switch on the instrument’s rear

panel is set properly. Applying a voltage excessive to the setting

may open the protective fuse.

The rear- panel fuse (F1) is a 0.25A, 250V time- delay fuse.

The fuse used is the same regardless of line voltage

selection. To replace the fuse:

1Locate the fuse holder shown in Figure 2. Gently push the

fuse holder in using your finger or a flat- bladed screwdriver.

2While the fuse holder is pushed in, gently turn the fuse

holder counterclockwise.

Figure 2 1142A Rear Panel

1142A Probe Control and Power Module

Using the 1142A

WARNING SHOCK HAZARD!BEFORE YOU CONNECT THIS INSTRUMENT TO MAINS

POWER OR LIVE MEASURING CIRCUITS you must provide a protective

earth ground. The Mains plug must be inserted in a socket outlet

provided with a protective earth contact. Do not use an extension cord

(power cable) without a protective conductor (grounding). Grounding

one conductor of a two-conductor outlet does not provide an instrument

ground. Failure to provide a protective earth ground could result in a

shock hazard if there is a failure in this instrument or equipment

connected to it.

The 1142A is provided with a three- wire power cable. When

connected to an appropriate ac power outlet, this cable grounds the

instrument cabinet. The type of power cable plug shipped with the

instrument depends on the country of destination.

The 1142A has no power switch. It is not required because of the

low mains power requirement.

To Clean the Instrument If the 1142A requires cleaning, perform the following steps:

1Remove power from the instrument.

2Clean the external surfaces of the instrument with a soft,

dry cloth. Make sure that the instrument is completely dry

before reconnecting it to a power source.

1142A Probe Control and Power Module

Safety Information

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 or operating

instructions in the product manuals 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.

Table 1 Instrument Markings

Marking Description

Instruction manual symbol: the product is marked with this symbol when it is necessary for you to

refer to the instruction manual in order to protect against damage to the product. "Caution" or

"Warning" risk of danger marked on product. Refer to “Safety Information” on page 8.

Hazardous voltage symbol.

Earth terminal symbol. Used to indicate a circuit common connected to grounded chassis.

Indicates AC (Alternating Current).

The CE mark of the European Community.

The CSA mark.

This symbol indicates the Environmental Protection Use Period (EPUP) for the product’s toxic

substances for the China RoHS requirements.

This product complies with the WEEE Directive marking requirements.

1142A Probe Control and Power Module

Safety Information

General Do not use this product in any manner not specified by the

manufacturer. The protective features of this product may be

impaired if it is used in a manner not specified in the operation

instructions.

WARNING 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 fuseholders. To do so could cause a shock or fire

hazard.

This apparatus has been designed and tested in accordance with

IEC Publication 348, Safety Requirements for Measuring Apparatus,

and has been supplied in a safe condition. This is a Safety Class I

instrument (provided with terminal for protective earthing). Before

applying power, verify that the correct safety precautions are taken

as described in the following warnings. In addition, note the

external markings on the instrument as described in Table 1 on

page 8.

WARNING If the instrument is damaged, or if it fails to operate according to the

characteristics in this manual, remove the power cord and contact

Agilent Technologies.

WARNING Before turning on the instrument, you must connect the protective earth

terminal of the instrument to the protective conductor of the (mains)

power cord. The mains plug shall only be inserted in a socket outlet

provided with a protective earth contact. You must not negate the

protective action by using an extension cord (power cable) without a

protective conductor (grounding). Grounding one conductor of a

two-conductor outlet is not sufficient protection.

WARNING If you energize this instrument by an auto transformer (for voltage

reduction or mains isolation), the common terminal must be connected

to the earth terminal of the power source.

WARNING Whenever it is likely that the ground protection is impaired, you must

make the instrument inoperative and secure it against any unintended

operation.

1142A Probe Control and Power Module

Safety Information

WARNING Service instructions are for trained service personnel. To avoid

dangerous electric shock, do not perform any service unless qualified to

do so. Do not attempt internal service or adjustment unless another

person, capable of rendering first aid and resuscitation, is present.

WARNING Do not install substitute parts or perform any unauthorized modification

to the instrument.

WARNING Capacitors inside the instrument may retain a charge even if the

instrument is disconnected from its source of supply.

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

fumes. Operation of any electrical instrument in such an environment

constitutes a definite safety hazard.

WARNING When unplugging the power cord from the power receptacle or from the

unit, grasp the plug, not the cord, in order to avoid damaging the cable.

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