GW Instek GPD-3303 Series User Manual

This manual contains proprietary information, which is protected by

copyrights. All rights are reserved. No part of this manual may be

photocopied, reproduced or translated to another language without

prior written consent of Good Will company.

The information in this manual was correct at the time of printing.

However, Good Will continues to improve products and reserves the

rights to change specification, equipment, and maintenance

procedures at any time without notice.

Good Will Instrument Co., Ltd.

No. 7-1, Jhongsing Rd., Tucheng City, Taipei County 236, Taiwan.

ISO-9001 CERTIFIED MANUFACTURER

DC Power Supply

GPD-3303 Series

USER MANUAL

GW INSTEK PART NO.

Error Messages ....................................27H38

Command List......................................28H39

GPD-3303 Series User Manual

Command Details ................................ 29H40

Fuse Replacement................................ 32H46

Specifications ......................................33H47

Declaration of Conformity.................... 34H49

FAQ................................................................................30H45

APPENDIX......................................................................31H46

INDEX ............................................................................35H50

TABLE OF CONTENTS

Table of Contents

Introduction........................................... 9

Series Lineup / Main Features ............. 11

Principle of Operation.......................... 12

Front Panel Overview........................... 14

Rear Panel Overview ............................ 17

CV/CC Crossover Characteristics ......... 18

SAFETY INSTRUCTIONS .................................................. 5

OVERVIEW....................................................................... 9

Power Up ............................................. 19

Load Cable Connection ........................ 20

Output On/Off..................................... 21

Beep On/Off ........................................ 21

Front Panel Lock ..................................22

SETUP ........................................................................... 19

CH1/CH2 Independent Mode .............. 23

CH3 Independent Mode....................... 25

CH1/CH2 Tracking Series Mode........... 27

CH1/CH2 Tracking Parallel Mode ........19H32

OPERATION .................................................................. 23

Save Setup ...........................................21H34

Recall Setup......................................... 22H35

SAVE/RECALL SETUP ..................................................... 20H34

Remote Control Setup.......................... 24H36

Remote Connection Step...................... 25H37

Command Syntax ................................. 26H38

REMOTE CONTROL....................................................... 23H36

source of low-voltage installation.

building installation.

circuits directly connected to the low voltage installation.

series.

GPD-3303 Series User Manual

• Do not place any heavy object on the GPD-3303

• Avoid severe impacts or rough handling that

leads to damaging the GPD-3303 series.

• Do not discharge static electricity to the GPD-

3303 series.

opening.

connected to Mains (see note below).

you are qualified as service personnel.

• Do not block or obstruct the cooling fan vent

• Do not perform measurement at circuits directly

• Do not disassemble the GPD-3303 series unless

(Measurement categories) EN 61010-1:2001 specifies the

measurement categories and their requirements as follows. The

GPD-3303 series falls under category I.

• Measurement category IV is for measurement performed at the

• Measurement category III is for measurement performed in the

• Measurement category II is for measurement performed on the

circuits not directly connected to Mains.

±10%, 50/60Hz

the AC power cord to an earth ground, to avoid

electrical shock.

• Measurement category I is for measurements performed on

• AC Input voltage: 100V/120V/220V/230V

• Connect the protective grounding conductor of

220V/230V: T3.15A/250V

before power up.

• Fuse type: 100V/120V: T6.3A/250V,

• Make sure the correct type of fuse is installed

Safety Guidelines

General

CAUTION

Guidelines

WARNING

Power Supply

WARNING

Fuse

SAFETY INSTRUCTIONS

This chapter contains important safety instructions

that you must follow when operating the GPD-

3303 series and when keeping it in storage. Read

the following before any operation to insure your

safety and to keep the best condition for the GPD-

SAFETY INSTRUCTIONS

3303 series.

Safety Symbols

These safety symbols may appear in this manual or on the GPD-3303

Warning: Identifies conditions or practices that

could result in injury or loss of life.

Caution: Identifies conditions or practices that

could result in damage to the GPD-3303 series or

WARNING

to other properties.

CAUTION

Attention Refer to the Manual

DANGER High Voltage

Protective Conductor Terminal

Earth (ground) Terminal

series.

or coloured Green or

should be protected by a 3A

• Location: Indoor

• Relative Humidity: < 70%

environment

• Temperature: −10°C to 70°C

Power cord for the United Kingdom

When using the GPD-3303 series in the United Kingdom, make sure

WARNING: THIS APPLIANCE MUST BE EARTHED

Green/ Yellow: Earth

Blue: Neutral

the power cord meets the following safety instructions.

NOTE: This lead/appliance must only be wired by competent persons

IMPORTANT: The wires in this lead are coloured in accordance with the

following code:

Brown: Live (Phase)

As the colours of the wires in main leads may not correspond with the colours

marking identified in your plug/appliance, proceed as follows:

The wire which is coloured Green & Yellow must be connected to the Earth

Green & Yellow.

The wire which is coloured Blue must be connected to the terminal which is

terminal marked with the letter E or by the earth symbol

marked with the letter N or coloured Blue or Black.

The wire which is coloured Brown must be connected to the terminal marked

with the letter L or P or coloured Brown or Red.

If in doubt, consult the instructions provided with the equipment or contact the

supplier.

This cable/appliance should be protected by a suitably rated and approved HBC

mains fuse: refer to the rating information on the equipment and/or user

instructions for details. As a guide, cable of 0.75mm

or 5A fuse. Larger conductors would normally require 13A types, depending on

the connection method used.

Any moulded mains connector that requires removal /replacement must be

destroyed by removal of any fuse & fuse carrier and disposed of immediately, as

a plug with bared wires is hazardous if a engaged in live socket. Any re-wiring

must be carried out in accordance with the information detailed on this label.

GPD-3303 Series User Manual

Storage

with the specified type and rating.

replacement.

• To ensure fire protection, replace the fuse only

SAFETY INSTRUCTIONS

• Disconnect the power cord before fuse

before fuse replacement.

• Make sure the cause of fuse blowout is fixed

pollution occurs. The pollution has no influence.

occurs. Occasionally, however, a temporary conductivity caused

by condensation must be expected.

conductive pollution occurs which becomes conductive due to

condensation which is expected. In such conditions, equipment

is normally protected against exposure to direct sunlight,

precipitation, and full wind pressure, but neither temperature

detergent and water. Do not spray any liquid.

harsh products such as benzene, toluene, xylene,

and acetone.

• Disconnect the power cord before cleaning.

• Use a soft cloth dampened in a solution of mild

• Do not use chemicals or cleaners containing

almost non-conductive pollution (note below)

• Location: Indoor, no direct sunlight, dust free,

• Relative Humidity: < 80%

• Altitude: < 2000m

• Temperature: 0°C to 40°C (Pollution Degree) EN 61010-1:2001 specifies the pollution degrees

and their requirements as follows. The GPD-3303 series falls under

degree 2.

Pollution refers to “addition of foreign matter, solid, liquid, or

gaseous (ionized gases), that may produce a reduction of dielectric

strength or surface resistivity”.

• Pollution degree 1: No pollution or only dry, non-conductive

• Pollution degree 2: Normally only non-conductive pollution

• Pollution degree 3: Conductive pollution occurs, or dry, non-

nor humidity is controlled.

Cleaning the

GPD-3303 series

Operation

Environment

The front panel display (CH1, CH2) shows the

output voltage or current. When operating in the

tracking mode, the power supply will

tracking mode

automatically connect to the auto- tracking mode.

When used in audio production lines, the power

supply will provide a continuous or dynamic load

connector. When the connectors are connected to

the position “ON”, a stable DC current power will

be provided for audio power amplifiers.

Dynamic load

Except for CH3, each output channel is completely

transistorized and well-regulated, and works in

constant voltage (CV) or constant current (CC)

mode. Even at the maximum output current, a

fully rated, continuously adjustable output voltage

is provided. For a big load, the power supply can

be used as a CV source; while for a small load, a

CC source. When in the CV mode (independent or

tracking mode), output current (overload or short

circuit) can be controlled via the front panel. When

in the CC mode (independent mode only), the

maximum (ceiling) output voltage can be

controlled via the front panel. The power supply

will automatically cross over from CV to CC

operation when the output current reaches the

target value. The power supply will automatically

cross over from CC to CV when the output voltage

reaches the target value. For more details about

GPD-3303 Series User Manual

Constant Voltage/

Constant Current

CV/CC mode operation, see page18.

utomatic A

OVERVIEW

This chapter describes the GPD-3303 series in a

nutshell, including its main features and front /

rear panel introduction. After going through the

perly power up and set operation environment.

overview, follow the Setup chapter (page19) to

pro

GPD-3303, the regulated DC power supply series,

are light weight, adjustable, multifunctional work

stations. They have three independent outputs:

two with adjustable voltage level and one with

fixed level selectable from 2.5V, 3.3V and 5V. The

GPD-3303 series can be used for logic circuits

where various output voltage or current are

needed, and for tracking mode definition systems

where plus and minus voltages with insignificant

error are required.

The three output modes of GPD-3303 series,

independent, tracking series, and tracking parallel,

can be selected through pressing the TRACKING

key on the front panel. In the independent mode,

the output voltage and current of each channel are

controlled separately. The isolation degree, from

output terminal to chassis or from output terminal

to output terminal, is 300V. In the tracking modes,

both the CH1 and CH2 outputs are automatically

connected in series or parallel; no need to connect

output leads. In the series mode, the output

voltage is doubled; in the parallel mode, the

output current is doubled.

OVERVIEW

Introduction

Overview

Independent /

Trac ki ng S er ie s /

Tracking Parallel

pre-regulator and reference voltage source

rectifier and filter, series regulator, current

comparator, voltage comparator, reference

voltage amplifier, remote device and relay

control circuit

• AC input circuit

• Transformer

• Bias power supply including rectifier, filter,

GPD-3303 Series User Manual

The power supply consists of the following.

• Main regulator circuit including the main

The block diagram below shows the circuit

arrangement. The single phase input power is

connected to the transformer through the input

circuit. Details of each part are described in the

next page.

Principle of Operation

Overview

Block diagram

≤ 0.5% + 50mV of Master

≤ 0.5% + 10mV of Master

OVERVIEW

Series Lineup / Main Features

Series Lineup

Model V Meter A Meter USB Tracking Error

GPD-3303D 3 digit 3 digit Yes

temperature

• Low noise: Cooling fan controlled by Heatsink

GPD-3303S 5 digit 4 digit Yes

Main Features

Performance

• Compact size, light weight

• Constant Voltage / Constant Current operation

• Tracking Series / Tracking parallel operation

• Output On/Off control

• 3 outputs: 30V/3A x 2, 2.5V/3.3V/5V/3A x 1

• Digital panel control

• 4 sets of panel setup save/recall

• Coarse and fine Voltage/Current control

• Software calibration

• Buzzer output

• Key lock function

• Overload protection

• Reverse polarity protection

• USB for remote control

Operation

Protection

Interface

GPD-3303D (3 digits)

GPD-3303 Series User Manual

Front Panel Overview

Displays CH1 or CH2 output voltage.

Display

Vol tMeter

GPD-3303S (5 digits)

GPD-3303D (3 digits)

Displays CH1 or CH2 output current.

AmpMeter

GPD-3303S (4 digits)

The auxiliary rectifiers D1011~ D1014 provide bias

voltage filtered by the capacitors C102 and C103,

OVERVIEW

for the pre-regulators U101 and U102. They

provide a regulated voltage for other modules.

The main rectifier is a full wave bridge rectifier. It

provides the power after the rectifier is filtered by

the capacitor C101, and then regulated via a series-

wound regulator, which is finally delivered to the

output terminal.

U104 acts as a current limiter. When the current is

over predetermined rating, U104 is activated and

decreases the current. U208 provides a reference

voltage. U206 is the inverter amplifier. U103 is a

comparator amplifier which compares reference

voltage and feedback voltage, and then delivers to

Q103, Q104, which then calibrates the output

voltage.

When the unit is overloaded, Q107 activates to

control the current magnitude of Q104, to limit the

output current. The relay control circuit controls

the power dissipation in the series-wound

regulated circuit.

Rectifier

Main Rectifier

Current Limiter

Overload

European Terminals

Indicates CH1 Constant Voltage or

Accepts a grounding wire.

Outputs CH1 voltage and current.

Constant Current state.

Outputs CH2 voltage and current.

Indicates CH2 Constant Voltage,

Constant Current, or Tracking

Outputs CH3 voltage and current.

Parallel operation mode.

Indicates when CH3 output current is

overloaded.

Selects CH3 output voltage: 2.5V,

3.3V, or 5V.

GPD-3303 Series User Manual

Te rm in al s

Default Terminals

GND Terminal

CH1 Output

CH1 CV/CC

Indicator

42H22.

CH2 Output

CH2

CV/CC/PAR

Indicator

CH3 Overload

CH3 Output

Indicator

CH3 Voltage

43H19.

Selector

or Off the main power.

key enables beep sound. For

Activates Tracking Parallel operation

or Tracking Series operation, For

details, see page27.

Locks or unlocks the front panel

Saves or recalls panel settings. Four

settings, 1 ~ 4, are available. For

save/recall details, see page34.

see page23. Pressing and holding

CH2

details, see page21.

Selects the output channel for level

adjustment. For level setting details,

settings. For details, see page

Turns the output on or off.

Adjusts the output voltage level for

CH1 or CH2. Pressing the knob

switches coarse and fine level setting.

Adjusts the output current level for

CH1 or CH2. Pressing the knob

switches coarse and fine level setting.

Turns On

For power up sequence, see page

OVERVIEW

Control Panel

Memory Keys

CH2/Beep

Keys

CH1/

l/Series

Paralle

Keys

Lock Key

Output Key

Vol t a g e K nobs

Current Knobs

Power Switch

+ 18 hidden pages