Keysight Technologies N2779A Bedienungsanleitung

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Keysight N2779A

Power Supply

User’s Guide

2N2779A 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 agreement

and written consent from Keysight Technolo-

gies, Inc. as governed by United States and

international copyright laws.

Manual Part Number

N2779-97005

Edition

September 2014

Printed in Malaysia

Published by:

Keysight Technologies, Inc.

1900 Garden of the Gods Road

Colorado Springs, CO 80907 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, Keysight 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 fit-

ness for a particular purpose. Keysight 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 contained

herein. Should Keysight 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 shall con-

trol.

Technology Licenses

The hard ware 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 software” as

defined in FAR 52.227-19 (June 1987) or any

equivalent agency regulation or contract

clause. Use, duplication or disclosure of

Software is subject to Keysight Technologies’

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. Govern-

ment users will receive no greater than Lim-

ited Rights as defined in FAR 52.227-14

(June 1987) or DFAR 252.227-7015 (b)(2)

(November 1995), as applicable in any tech-

nical 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 haz-

ard. It calls attention to an operat-

ing procedure, practice, or the like

that, if not correctly performed or

adhered to, could resul t in personal

injury or death. Do not proceed

beyond a WARNING notice until the

indicated conditions are fully

understood and met.

Keysight N2779A Power Supply

User’s Guide

N2779A Power Supply

Safety Precautions 6

Safety Information 8

Informations relatives à la sécurité 12

Characteristics and Regulatory Information 17

Service 19

This N2779A power supply is a special-purpose power supply for the N2780A/B,

N2781A/B, N2782A/B, N2783A/B current probes. You can simultaneously

connect up to three probes to the N2779A’s front-panel probe-power connectors.

Before connecting your Keysight probe to the N2779A, refer to the probe’s user’s

guide to learn how to perform measurements.

Use the N2779A only with the N2780A/B, N2781A/B, N2782A/B, and N2783A/B

current probes, which are powered using the N2779A’s front-panel probe-power

connectors. Figure 1 shows the N2779A’s front and rear panels. Notice that the

POWER switch is located on the rear panel.

WARNING Use only with Keysight N2780A/B, N2781A/B, N2782A/B, or N2783A/B

current probes. Connecting the power supply to incompatible

equipment may result in fire or electric shock.

4 N2779 Power Supply User’s Guide

N2779A Power Supply

Figure 1 Front and Rear Panels

CAUTION Allow at least 5 cm clearance on both sides and above the power supply

for proper cooling. Ventilation holes for heat radiation are provided on

the top and side panels of the product. Installation of the product with

the ventilation holes obstructed may cause a malfunction or fire.

Power

Indicator

Probe Power Connectors Power Switch

Rear PanelFront Panel

Off

Grounding

Terminal

Power Cord

Connector

Table 1 Instrument Markings

Marking Description

"Caution" or "Warning" risk of danger marked on product. Refer to “Safety Precautions" on page 6.

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

Indicates AC (Alternating Current).

Indicates power on.

Indicates power off.

N2779A Power Supply

N2779 Power Supply User’s Guide 5

To Connect the N2779A

1Position the N2779A so that the power switch and power cord may be easily

reached.

2Turn the power switch off and connect the power cord.

WARNING Use only the supplied power cord.

3Connect the power plug of your probe to one of the N2779A’s front-panel

probe-power connectors. Up to three probes may be connected to the N2779A.

CAUTION Before turning on the power, make sure that the voltage of the power

supply being used matches the supply voltage indicated on the rear

panel of the unit. Connecting to a different supply voltage may result in

equipment damage or incorrect measurements.

4Turn the N2779A’s rear-panel power switch on, and check that the front-panel

power indicator is lit.

To Disconnect Power

1Turn the N2779A’s power switch off.

2Disconnect the power plugs of all connected probes from the N2779A.

3Disconnect the power cord from the N2779A.

4The Appliance Coupler is the equipment disconnect device. Position the

equipment so that the Appliance Coupler is free from obstruction.

To Clean the Instrument

If the N2779A 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.

Do not attempt to clean the current probes.

6 N2779 Power Supply User’s Guide

N2779A Power Supply

Safety Precautions

This apparatus has been designed and tested in accordance with IEC Publication

1010, 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 4.

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

Keysight 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.

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.

N2779A Power Supply

N2779 Power Supply User’s Guide 7

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 Do not subject the unit to vibration or shocks during transport or

handling. Be especially careful to avoid dropping the unit.

WARNING Do not store the unit where it will be exposed to direct sunlight, high

temperature, high humidity, or condensation. If exposed to such

conditions, the unit may be damaged, the insulation may deteriorate,

and the unit may no longer satisfy its specifications.

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.

WARNING This unit is not constructed to be waterproof or dust proof, so do not

use it in a very dusty environment or in one where it will get wet. For

indoor use only.

WARNING Do not use the instrument in a manner not specified by the

manufacturer.

8 N2779 Power Supply User’s Guide

N2779A Power Supply

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. Keysight

Technologies assumes no liability for the customer's failure to comply with these

requirements. Product manuals are provided with your instrument on CD-ROM

and/or in printed form. Printed manuals are an option for many products. Manuals

may also be available on the Web. Go to www.keysight.com and type in your

product number in the Search field at the top of the page.

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.

Before Applying Power

Verify that all safety precautions are taken. Make all connections to the unit before

applying power. Note the instrument's external markings described in Table 2 on

page 10.

Ground the Instrument

If your product is provided with a grounding type power plug, the instrument

chassis and cover must be connected to an electrical ground to minimize shock

hazard. The ground pin must be firmly connected to an electrical ground (safety

ground) terminal 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.

Fuses

See the user's guide or operator's manual for information about line-fuse

replacement. Some instruments contain an internal fuse, which is not user

accessible.

N2779A Power Supply

N2779 Power Supply User’s Guide 9

Do Not Operate in an Explosive Atmosphere

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

Do Not Remove the Instrument Cover

Only qualified, service-trained personnel who are aware of the hazards involved

should remove instrument covers. Always disconnect the power cable and any

external circuits before removing the instrument cover.

Cleaning

Clean the outside of the instrument with a soft, lint-free, slightly dampened cloth.

Do not use detergent or chemical solvents.

Do Not Modify the Instrument

Do not install substitute parts or perform any unauthorized modification to the

product. Return the product to a Keysight Sales and Service Office for service and

repair to ensure that safety features are maintained.

In Case of Damage

Instruments that appear damaged or defective should be made inoperative and

secured against unintended operation until they can be repaired by qualified

service personnel.

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 performed or

adhered to, could result in personal injury or death. Do not proceed

beyond a WARNING notice until the indicated conditions are fully

understood and met.

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