Agilent E3620A Operations Guide

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SAFETY SUMMARY

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The following general safety precautions must be observed during all phases of operation, service, and repair of this instrument.
Failure to compl
manufacture, and intended use of the instrument. Hewlett-Packard Compan

with these requirements.

compl

with these precautions or with specific warnings elsewhere in this manual violates safety standards of design,

assumes no liability for the customer's failure to

BEFORE APPLYING POWER.

Verif

that the product is set to match the available line volt-

a

e and that the correct fuse is installed.

GROUND THE INSTRUMENT.

This product is a Safet
protective earth terminal). To minimize shock hazard, the
instrument chassis and cabinet must be connected to an
electrical
ac power suppl
cable, with the third wire firml

round(safety ground) at the power outlet. Any interruption of
the protective(
protective earth terminal will cause a potential shock hazard
that could result in personal injur
ener
tion, be certain that the autotransformer common terminal is
connected to the neutral(earthed pole) of the ac power lines
(suppl

DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE.

Do not operate the instrument in the presence of flammable

ases or fumes.

KEEP AWAY FROM LIVE CIRCUITS.

Operatin
Component replacement and internal adjustments must be
made b
nents with power cable connected. Under certain conditions,
dan
removed. To avoid injuries, alwa
char
touchin

DO NOT SERVICE OR ADJUST ALONE.

Do not attempt internal service or adjustment unless another
person, capable of renderin
present.

round. The instrument must be connected to the

rounding) conductor or disconnection of the

ized via an external autotransformer for voltage reduc-

mains).

personnel must not remove instrument covers.

qualified service personnel. Do not replace compo-

erous voltages may exist even with the power cable

e circuits and remove external voltage sources before

components.

Class I instrument (provided with a

mains through a three-conductor power

connected to an electrical

. If the instrument is to be

s disconnect power, dis-

first aid and resuscitation, is

SAFETY SYMBOLS

Instruction manual s
will be marked with this s

!

or

DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT.

Because of the dan
not install substitute parts or perform an
fication to the instrument. Return the instrument to a Hewlett­Packard Sales and Service Office for service and repair to
ensure that safet

necessar
instruction manual.

Indicate earth(

The WARNING si
calls attention to a procedure, practice,
or the like, which, if not correctl
formed or adhered to, could result inper­sonal injur
WARNING si
ditions are full

The CAUTION si
calls attention to an operatin
or the like, which, if not correctl
formed or adhered to, could result in
dama
the product. Do not proceed be
CAUTION si
tions are full

The NOTE si
mation. It calls attention to a procedure,
practice, condition or the like, which is
essential to hi

er of introducing additional hazards, do

features are maintained.

for the user to refer to the

. Do not proceed beyond a

e to or destruction of part or all of

n until the indicated condi-

understood and met.

mbol; the product

mbol when it is

round) terminal.

n denotes a hazard. It

per-

n until the indicated con­ understood and met.

n denotes a hazard. It

procedure,

per-

ond

n denotes important infor-

hlight.

unauthorized modi-

Instruments that appear damaged or defective should be made inoperative and secured against unintended
operation until the

can be repaired by qualified service personnel.

1-2

Table of Contents

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SAFETY SUMMARY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2

GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

SAFETY CONSIDERATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

SAFETY AND EMC REQUIREMENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

INSTRUMENT AND MANUAL IDENTIFICATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

ACCESSORY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

ORDERING ADDITIONAL MANUALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

LINE FUSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

INITIAL INSPECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Mechanical Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Electrical Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

INSTALLATION DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Location and Coolin
Outline Dia
Rack Mountin

INPUT POWER REQUIREMENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Power Cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

ram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Line Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Volta

e and Current Metering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Volta

e Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

TURN-ON CHECKOUT PROCEDURE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

Overload Protection Circuits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

Operation Be
Connectin

Series Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

Parallel Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

ond Rated Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

LOAD CONSIDERATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7

PULSE LOADING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

REVERSE CURRENT LOADING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

OUTPUT CAPACITANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

REVERSE VOLTAGE PROTECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

1-3

GENERAL INFORMATION

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DESCRIPTION

The Model E3620A Dual Output Power Supply is a compact,
constant volta
lated 0 to 25 V outputs rated at 1 A. It is an ideal power suppl
for design and breadboard work where single or dual voltages
are required. Each output volta

hout its range and separate current limit circuits protect

throu
each output a

Connections to the outputs are made to bindin
minals on the front panel. The outputs can be used individu­all

or in combination to satisfy any number of output
demands. The positive or ne
can be

round terminal is located on the front panel of the supply.

The front panel also contains a line switch, output volta
controls, an autoran

ital ammeter, and two meter select pushbutton switches.

di
The meter pushbuttons select both volta
monitorin
with a detachable, 3-wire
line fuse is an extractor t

SAFETY CONSIDERA TIONS

This product is a Safety Class I instrument, which means that
it is provided with a protective earth
minal must be connected to an ac source that has a 3-wire

round receptacle. Review the instrument rear panel and this
manual for safet
the instrument. Refer to the Safety Summary page at the

inning of this manual for a summary of general safet

be
information. Specific safety information is located at the
appropriate places in this manual.

SAFETY AND EMC REQUIREMENTS

This power supply is designed to comply with the followin
safety and EMC(Electromagnetic Compatibility) require-

ments:B

e/current limiting supply that delivers two iso-

e is continuously variable

ainst overload or short circuit damage.

post type ter-

ative terminal of each output

rounded or each output can be left floating. A chassis

digital voltmeter and a single-range

e and current

for the output V1 and V2. The supply is furnished

rounding type line cord. The ac

pe fuseholder on the rear heat sink.

round terminal. This ter-

markings and instructions before operatin

 EN 50082-1(1992) /

IEC 801-2(1991): Electrostatic Dischar
IEC 801-3(1984): Radiated Electroma

Requirements

IEC 801-4(1988): Electrical Fast Transient/Burst

Requirements

e Requirements

netic Field

INSTRUMENT AND MANUAL IDENTIFICA TION

A serial number identifies your power supply. The serial num­ber encodes the countr

nificant design change, and a unique sequential

est si
number. The letter "KR" desi
manufacture, the first one di
5=1995, and so forth), and the second two di
week. The remainin

it number assigned sequentially.

five-di

If the serial number on

e

on the title pa
supplied with the manual to explain the difference between

our instrument and the instrument described by this manual.
The Chan
in

errors in the manual.

e of the manual, a yellow Change Sheet is

e Sheet may also contain information for correct-

of manufacture, the week of the lat-

nates Korea as the country of
it indicates the year (4=1994,

its indicate the

digits of the serial number are a unique,

our supply does not agree with those

OPTIONS

Options 0E3 and 0E9 determine which line voltage is
selected at the factor
115 Vac ± 10%, 47-63 Hz input.

Option No. Description

0E3: 230 Vac ± 10%, 47-63 Hz Input
0E9: 100 Vac ± 10%, 47-63 Hz Input

. The standard unit is configured for

ACCESSORY

The accessory listed below may be ordered from your local
Hewlett-Packard Sales Office either with the power suppl
separatel
address.)

HP Part No. Description

5063-9240 Rack Kit for mountin

. (Refer to the list at the rear of the manual for

one or two 3 1/2" high

supplies in a standard 19" rack

or

 IEC 1010-1(1990)/EN 61010 (1993): Safet

ments for Electrical Equipment for Measurement, Control,
and Laborator

 CSA C22.2 No.231: Safet

and Electronic Measurin

 UL 1244: Electrical and Electronic Measurin

Equipment

 EMC Directive 89/336/EEC: Council Directive entitled

Approximation of the Laws of the Member States relatin
to Electroma

 EN 55011(1991) Group 1, Class B/CISPR 11 (1990):

Limits and Methods of Radio Interference Characteristics
of Industrial, Scientific, and Medical(ISM) Radio­Frequenc

netic Compatibilit

Equipment

Use

Requirements for Electrical

and Test Equipment

Require-

and T esting

The rack mount kit is needed for rack mountin
E3620A power suppl

.

of the

ORDERING ADDITIONAL MANUALS

One manual is shipped with each power supply. (Option 910
is ordered for each extra manual.) Additional manuals ma
also be purchased separatel
sales office (see the list at the rear of this manual for
addresses). Specif
HP Part Number provided on the title pa

the model number, serial prefix, and the

for your local Hewlett-Packard

e.

SPECIFICA TIONS

Instrument specifications are listed in Table 1. These specifi­cations are performance standards or limits a
instrument is tested.

1-4

ainst which the