Global Specialties Global Specialties 1320 Manual

5 Commonwealth Ave
Woburn, MA 01801
Phone [phone]
Toll Free 1-800-517-8431

Triple Output High Resolution
Power Supply

1320

User Manual

Safety Summary

The following safety precautions apply to both operating and
maintenance personnel and must be observed during all phases
of operation, service, and repair of this instrument. Before
applying power, follow the installation instructions and become
familiar with the operating instructions for this instrument.

GROUND THE INSTRUMENT

To minimize shock hazard, the instrument chassis and cabinet
must be connected to an electrical ground. This instrument is
grounded through the ground conductor of the supplied, three­conductor ac power cable. The power cable must be plugged into
an approved three-conductor electrical outlet. Do not alter the
ground connection. Without the protective ground connection, all
accessible conductive parts (including control knobs) can render
an electric shock. The power jack and mating plug of the power
cable meet IEC safety standards.

DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE

Do not operate the instrument in the presence of ammable

gases or fumes. Operation of any electrical instrument in such an

environment constitutes a denite safety hazard.

KEEP AWAY FROM LIVE CIRCUITS

Instrument covers must not be removed by operating personnel.
Component replacement and internal adjustments must be made

by qualied service personnel. Disconnect the power cord before

removing the instrument covers and replacing components.
Under certain conditions, even with the power cable removed,
dangerous voltages may exist. To avoid injuries, always
disconnect power and discharge circuits before touching them.

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DO NOT SERVICE OR ADJUST ALONE

Do not attempt any internal service or adjustment unless another

person, capable of rendering rst aid and resuscitation, is

present.

DO NOT SUBSTITUTE PARTS OR MODIFY THE INSTRU­MENT

Do not install substitute parts or perform any unauthorized

modications to this instrument. Return the instrument to Global

Specialties for service and repair to ensure that safety features
are maintained.

WARNINGS AND CAUTIONS

A WARNING statement calls attention to an operating procedure,
practice, or condition, which, if not followed correctly, could result
in injury or death to personnel.

A CAUTION statement calls attention to an operating procedure,
practice, or condition, which, if not followed correctly, could result
in damage to or destruction of parts or the entire product.

WARNING: Do not alter the ground connection. Without the
protective ground connection, all accessible conductive parts
(including control knobs) can render an electric shock. The
power jack and mating plug of the power cable meet IEC safety
standards.

WARNING: To avoid electrical shock hazard, disconnect

power cord before removing covers. Refer servicing to qualied

personnel.

CAUTION: Before connecting the line cord to the AC mains,
check the rear panel AC line voltage indicator. Applying a line
voltage other than the indicated voltage can destroy the AC line

fuses. For continued re protection, replace fuses only with those
of the specied voltage and current ratings.

CAUTION: This product uses components which can be
damaged by electrostatic discharge (ESD). To avoid damage,

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be sure to follow proper procedures for handling, storing and
transporting parts and subassemblies which contain ESD­sensitive components.

COMPLIANCE STATEMENTS

This product is subject to Directive 2002/96/EC of the European
Parliament and the Council of the European Union on waste
electrical and electronic equipment (WEEE), and in jurisdictions

adopting that Directive, is marked as being put
on the market after August 13, 2005, and should
not be disposed of as unsorted municipal waste.
Please utilize your local WEEE collection facilities
in the disposition of this product and otherwise
observe all applicable requirements.

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Table of Contents Page

1 Introduction .............................................................5

1. Overview ...................................................................................5

2. Features ....................................................................................5

2 Installation ...............................................................5

1. Initial Inspection ........................................................................5

2. Input Power Requirements ..........................................................6

3. Ventilation .................................................................................6

3 Product Description ..................................................7

1. Front Panel ................................................................................7

2. Rear Panel .................................................................................9

4 Operating Instructions .............................................9

1. Setting the Output Voltage and Output Current ............................9

2. Constant Voltage (CV) /Constant Current (CC) Mode ...................10

3. System Conguration ................................................................11

5 Specications .........................................................15

6 Maintenance ...........................................................16

1. Preventative Steps ....................................................................16

2. When the Unit is Not Turning On ...............................................16

3. Fuse Replacement ....................................................................16

7 Service and Warranty Information ........................17

1. One Year Warranty ...................................................................17

2. Calibration and Repair ..............................................................17

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1 Introduction

1. Overview

Global Specialties Model 1320 Triple Output High Resolution DC

Power Supply provides two variable outputs (0 – 32V / 0 – 3A)

and one xed output (5V / 3A). The variable outputs can work

independently, in series tracking, or parallel mode. Conveniently
adjust voltage and current with independent front panel knobs
and bright quad display. This power supply is ideally suited for
applications in electronic test, production, and service, where
multiple independent DC power supplies are required and bench
space is at a premium.

2. Features

z Separate 4-digit displays for voltage and current on vari-

able outputs
z Three independent outputs
z Individual control of voltage and current for variable outputs
z CV (constant voltage) / CC (constant current) mode opera-

tion
z LED indication for CV / CC mode
z Overload indication LED for fixed output
z Series tracking and parallel mode operation
z Power On/Off switch on front panel
z Input voltage selection on rear side (120 VAC/ 240 VAC)

2 Installation

1. Initial Inspection

This unit is tested prior to shipment. It is therefore ready for
immediate use upon receipt. An initial physical inspection should
be made to ensure that no damage has been sustained during
shipment.

Inspect the packing box on receipt for any external damage.
If any external damage is evident, remove the instrument and
visually inspect its case and parts for any damage. If damage to

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