GPD-3303 Series
User Manual
Isao Kato GW
instekgpd 3303s 2 DC Power Supply
GPD-3303 Series
USER MANUAL
GW INSTEK PART NO.
ISO-9001 CERTIFIED MANUFACTURER
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.
TABLE OF CONTENTS
Table of Contents
SAFETY INSTRUCTIONS .................................................. 5
OVERVIEW....................................................................... 9 Introduction........................................... 9 Series Lineup / Main Features ............. 11 Principle of Operation.......................... 12 Front Panel Overview ........................... 14 Rear Panel Overview ............................ 17 CV/CC Crossover Characteristics ......... 18
SETUP ........................................................................... 19 Power Up ............................................. 19 Load Cable Connection ........................ 20 Output On/Off..................................... 21 Beep On/Off ........................................ 21 Front Panel Lock .................................. 22
OPERATION .................................................................. 23 CH1/CH2 Independent Mode .............. 23 CH3 Independent Mode....................... 25 CH1/CH2 Tracking Series Mode........... 27 CH1/CH2 Tracking Parallel Mode ........ 32
19H
SAVE/RECALL SETUP ..................................................... 34 20H Save Setup ........................................... 34 21H Recall Setup ......................................... 35 2H
REMOTE CONTROL ....................................................... 36 23H Remote Control Setup .......................... 36 24H Remote Connection Step...................... 37 25H Command Syntax ................................. 38 26H
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GPD-3303 Series User Manual
Error Messages .................................... 38 27H
Command List...................................... 39 28H
Command Details ................................ 40 29H
FAQ ................................................................................45 30H
APPENDIX ......................................................................46 31H Fuse Replacement ................................ 46 32H Specifications ...................................... 47 3H Declaration of Conformity .................... 49 34H
INDEX ............................................................................50 35H
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SAFETY INSTRUCTIONS
SAFETY INSTRUCTIONS
This chapter contains important safety instructions that you must follow when operating the GPD3303 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 GPD3303 series.
Safety Symbols
These safety symbols may appear in this manual or on the GPD-3303 series.
Warning: Identifies conditions or practices that WARNING could result in injury or loss of life.
CAUTION
Caution: Identifies conditions or practices that could result in damage to the GPD-3303 series or to other properties.
DANGER High Voltage
Attention Refer to the Manual
Protective Conductor Terminal
Earth (ground) Terminal
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GPD-3303 Series User Manual
Safety Guidelines
General Guidelines
CAUTION
Power Supply WARNING
Fuse WARNING
· Do not place any heavy object on the GPD-3303 series.
· Avoid severe impacts or rough handling that leads to damaging the GPD-3303 series.
· Do not discharge static electricity to the GPD3303 series.
· Do not block or obstruct the cooling fan vent opening.
· Do not perform measurement at circuits directly connected to Mains (see note below).
· Do not disassemble the GPD-3303 series unless you are qualified as service personnel.
(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 source of low-voltage installation.
· Measurement category III is for measurement performed in the building installation.
· Measurement category II is for measurement performed on the circuits directly connected to the low voltage installation.
· Measurement category I is for measurements performed on circuits not directly connected to Mains.
· AC Input voltage: 100V/120V/220V/230V ±10%, 50/60Hz
· Connect the protective grounding conductor of the AC power cord to an earth ground, to avoid electrical shock.
· Fuse type: 100V/120V: T6.3A/250V, 220V/230V: T3.15A/250V
· Make sure the correct type of fuse is installed before power up.
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SAFETY INSTRUCTIONS
· To ensure fire protection, replace the fuse only with the specified type and rating.
· Disconnect the power cord before fuse replacement.
· Make sure the cause of fuse blowout is fixed before fuse replacement.
Cleaning the
· Disconnect the power cord before cleaning.
GPD-3303 series · Use a soft cloth dampened in a solution of mild
detergent and water. Do not spray any liquid.
· Do not use chemicals or cleaners containing harsh products such as benzene, toluene, xylene, and acetone.
Operation Environment
· Location: Indoor, no direct sunlight, dust free, almost non-conductive pollution (note below)
· 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 occurs. The pollution has no influence.
· Pollution degree 2: Normally only non-conductive pollution occurs. Occasionally, however, a temporary conductivity caused by condensation must be expected.
· Pollution degree 3: Conductive pollution occurs, or dry, nonconductive 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 nor humidity is controlled.
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Storage environment
GPD-3303 Series User Manual
· Location: Indoor · Relative Humidity: < 70% · Temperature: -10°C to 70°C
Power cord for the United Kingdom
When using the GPD-3303 series in the United Kingdom, make sure the power cord meets the following safety instructions.
NOTE: This lead/appliance must only be wired by competent persons
WARNING: THIS APPLIANCE MUST BE EARTHED
IMPORTANT: The wires in this lead are coloured in accordance with the following code:
Green/ Yellow: Earth
Blue:
Neutral
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
terminal marked with the letter E or by the earth symbol or coloured Green or Green & Yellow.
The wire which is coloured Blue must be connected to the terminal which is 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 0.75mm2 should be protected by a 3A 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.
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OVERVIEW
OVERVIEW
This chapter describes the GPD-3303 series in a nutshell, including its main features and front / rear panel introduction. After going through the overview, follow the Setup chapter (page19) to properly power up and set operation environment.
Introduction
Overview
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.
Independent / Tracking Series / Tracking Parallel
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.
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GPD-3303 Series User Manual
Constant Voltage/ Except for CH3, each output channel is completely Constant Current 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 CV/CC mode operation, see page18.
Automatic tracking mode
The front panel display (CH1, CH2) shows the output voltage or current. When operating in the tracking mode, the power supply will automatically connect to the auto- tracking mode.
Dynamic load
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.
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OVERVIEW
Series Lineup / Main Features
Series Lineup
Model GPD-3303D GPD-3303S
V Meter A Meter USB 3 digit 3 digit Yes 5 digit 4 digit Yes
Tracking Error 0.5% + 50mV of Master 0.5% + 10mV of Master
Main Features
Performance Operation
Protection Interface
· Low noise: Cooling fan controlled by Heatsink temperature
· 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
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GPD-3303 Series User Manual
Principle of Operation
Overview Block diagram
The power supply consists of the following.
· AC input circuit
· Transformer
· Bias power supply including rectifier, filter, pre-regulator and reference voltage source
· Main regulator circuit including the main rectifier and filter, series regulator, current comparator, voltage comparator, reference voltage amplifier, remote device and relay control circuit
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.
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OVERVIEW
Rectifier
The auxiliary rectifiers D1011~ D1014 provide bias voltage filtered by the capacitors C102 and C103, for the pre-regulators U101 and U102. They provide a regulated voltage for other modules.
Main Rectifier
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 serieswound regulator, which is finally delivered to the output terminal.
Current Limiter
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.
Overload
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.
Front Panel Overview
GPD-3303 Series User Manual
Display VoltMeter
Displays CH1 or CH2 output voltage. GPD-3303S (5 digits) GPD-3303D (3 digits)
AmpMeter
Displays CH1 or CH2 output current. GPD-3303S (4 digits) GPD-3303D (3 digits)
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14
Control Panel Memory Keys
CH1/CH2/Beep Keys
Parallel/Series Keys Lock Key Output Key Voltage Knobs
Current Knobs
Power Switch
OVERVIEW
Saves or recalls panel settings. Four settings, 1 ~ 4, are available. For save/recall details, see page34.
Selects the output channel for level adjustment. For level setting details, see page23. Pressing and holding CH2 key enables beep sound. For details, see page21. Activates Tracking Parallel operation or Tracking Series operation, For details, see page27.
Locks or unlocks the front panel settings. For details, see page22.
42H
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 or Off the main power. For power up sequence, see page19.
43H
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Terminals Default Terminals
GPD-3303 Series User Manual European Terminals
GND Terminal
CH1 Output
CH1 CV/CC Indicator CH2 Output
CH2 CV/CC/PAR Indicator CH3 Output
CH3 Overload Indicator CH3 Voltage Selector 16
Accepts a grounding wire.
Outputs CH1 voltage and current.
Indicates CH1 Constant Voltage or Constant Current state. Outputs CH2 voltage and current.
Indicates CH2 Constant Voltage, Constant Current, or Tracking Parallel operation mode. Outputs CH3 voltage and current.
Indicates when CH3 output current is overloaded. Selects CH3 output voltage: 2.5V, 3.3V, or 5V.
Rear Panel Overview
USB Connector
Cooling Fan
OVERVIEW
Power Cord / Fuse Socket AC Selector
USB Connector Power Cord / Fuse Socket
AC Selector
Accepts a USB slave connector for command-based remote control (page36).
The power cord socket accepts the AC mains: 115V/230V, 50/60Hz. For power up details, see page19. The fuse holder contains the AC main fuse. For fuse replacement details, see page46.
Selects AC voltage: 100V/ 120V/ 220V/ 230V.
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GPD-3303 Series User Manual
CV/CC Crossover Characteristics
Background
The GPD-3303 series automatically switches between constant voltage mode (CV) and constant current mode (CC), according to load condition.
CV mode
When the current level is smaller than the output setting, the GPD-3303 series operates in Constant Voltage mode. The indicator on the front panel turns green (C.V.) The Voltage level is kept at the setting and the Current level fluctuates according to the load condition until it reaches the output current setting.
CC mode
When the current level reaches the output setting, the GPD-3303 series starts operating in Constant Current mode. The indicator on the front panel turns red (C.C.) The Current level is kept at the setting but the Voltage level becomes lower than the setting, in order to suppress the output power level from overload. When the current level becomes lower than the setting, the GPD-3303 series goes back to the Constant Voltage mode.
Diagram
Vout
Vmax
Constant Voltage
Constant Current
Imax Iout
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SETUP
SETUP
This chapter describes how to properly power up and configure the GPD-3303 series before operation.
Power Up
Select AC voltage Before powering up the power supply, select the AC input voltage from the rear panel.
Connect AC power cord
Connect the AC power cord to the rear panel socket.
Power On
Press the Power switch to turn on the power. The display shows the initialization screen with the model name, followed by the last recalled settings.
Power Off
Press the Power switch again to turn off the power.
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GPD-3303 Series User Manual
Load Cable Connection
GTL-104
1. Turn the terminal counterclockwise and loosen the screw.
2. Insert the cable terminal.
3. Turn the terminal clockwise and tighten the screw.
GTL-105
Insert the plug into the socket.
GTL-203, 204 Insert the plug into the terminal.
Wire type 20
When using load cables other than the attached, make sure they have enough current capacity for minimizing cable loss and load line impedance. Voltage drop across a wire should not excess 0.5V. The following list is the wire current rating at 450A/cm2.
Wire size (AWG)
Maximum current (A)
20
2.5
18
4
16
6
14
10
12
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SETUP
Output On/Off
Panel operation
Pressing the Output key turns on all CH 1/2/3 outputs.
The key LED also turns on. Pressing the Output key again turns the output and the key LED off.
Automatic output Any of the following actions during output on
off
automatically turns it off. They might involve
sudden and harmful change in the output level.
· Change the operation mode between independent / tracking series / tracking parallel
· Recalling other setups from the memory
· Storing the setup into the memory
Beep On/Off
Panel operation
By default, the beep sound is enabled. To turn off the beep, press the CH2 key for 2 seconds.
A beep comes out and the beep setting will be turned off. To enable the beep, press the CH2 key again for 2 seconds.
List of beep
The following operations beep when the beep setting is on.
· Power on
· Output on/off
· INDEP SER PARA · Panel lock/unlock
mode switching
· CH1/CH2 output
· Setup save/recall
level knob switching
· Voltage/current knob · Voltage/current level fine/coarse switching reaching minimum (zero) level
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GPD-3303 Series User Manual
Front Panel Lock
Panel operation
Press the LOCK key to lock the front panel key operation. The key LED
turns on. To unlock, press the LOCK key for 2 seconds. The key LED also turns off.
Note
The OUTPUT key is not affected by the lock operation.
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OPERATION
OPERATION
CH1/CH2 Independent Mode
Background / Connection
CH1 and CH2 outputs work independent of each other.
Output rating 0 ~ 30V/0~3A for each channel
Panel operation
1. Make sure the PARA/ INDEP and SER/INDEP keys are turned off (the key LEDs are off).
2. Connect the load to the front panel terminals, CH1 +/-, CH2 +/-.
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GPD-3303 Series User Manual
Note: this diagram shows non-European terminals.
3. Set the CH1 output voltage (For CH1) and current. Press the CH1 key (LED turns on) and then use the Voltage and Current knob. By default, the Voltage and Current knob work in the coarse mode. To activate the (Fine control) fine mode, press the knob to turn the FINE LED on.
· Coarse: 0.1V or 0.1A @ rotation click · Fine: the smallest digit @ rotation click
4. Repeat the above settings for the CH2.
5. To turn on the output, press
the output key. The key
LED turns on and the CH1 /
CH2 indicator shows the output mode, CV or CC.
(CH1)
(CH2)
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OPERATION
CH3 Independent Mode
Background / Connection
The CH3 rating is 2.5V/3.3V/5V, 3A fixed. It works independently from CH1 and CH2, regardless of their modes.
CV CC
GPD-3303 Series User Manual
3. To turn on the output, press the output key. The key LED turns on.
When the output Current level exceeds 3A, the overload indicator turns red and CH3 operation mode switches from Constant Voltage to Constant Current. Note: "overload" in this case does not mean an abnormal operation.
Output rating 2.5V/3.3V/5V, 3A fixed
No Tracking Series/Parallel
CH3 does not have tracking series/parallel mode. Also, CH3 output is not affected by CH1 and CH2 modes.
Panel operation
1. Connect the load to the front panel CH3 +/- terminal. (the diagram shows nonEuropean terminals)
2. Select the output voltage, 2.5V/3.3V/5V using the CH3 voltage selector key.
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26
OPERATION
CH1/CH2 Tracking Series Mode
Background
Tracking series operation doubles the Voltage capacity of the GPD-3303 series by internally connecting CH1 (Master) and CH2 (Slave) in serial and combining the output to a single channel. CH1 (Master) controls the combined Voltage output level.
The following describes two type of configurations depending on the common ground usage.
Tracking series without common terminal
Connection
Output rating 0 ~ 60V/0 ~ 3A
1. Press the SER/INDEP key to activate the tracking series mode. The key LED turns on.
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GPD-3303 Series User Manual
2. Connect the load to the front panel terminals, CH1+ & CH2- (Single supply).
Note: this diagram shows non-European terminals.
3. Press the CH2 key (LED turns on) and then use the Current knob to set the CH2 output current to the maximum level (3.0A). By default, the Voltage and Current knob work in the (Fine control) coarse mode. To activate the fine mode, press the knob to turn the FINE LED on. · Coarse: 0.1V or 0.1A @ rotation click · Fine: the smallest digit @ rotation click
4. Press the CH1 key (LED turns on) and then use the Voltage and Current knob to set the output voltage and current level.
5. To turn on the output, press the output key. The key LED turns on.
6. Refer to the CH1 (Master) meter and indicator for the output setting level and CV/CC status.
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OPERATION
Voltage level Current level
Double the reading on the CH1 Voltage meter. In the above case, the actual output is 20.0 x 2 = 40.0V.
CH1 meter reading shows the output Current. In the above case, 2.000A. (CH2 Current control must be in the Maximum position=3.0A).
Tracking series with common terminal
Connection
Output rating 0~30V/0~3A for CH1 ~ COM 0~30V/0~3A for CH2 ~ COM
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GPD-3303 Series User Manual
1. Press the SER/INDEP key to activate the tracking series mode. The key LED turns on.
2. Connect the load to the front panel terminals, CH1+ & CH2-. Use the CH1 (-) terminal as the common line connection.
Note: this diagram shows non-European terminals.
3. Press the CH1 key (LED turns
on) and use the Voltage knob
to set the master & slave
(master & slave)
output voltage (the same level
for both channels).
By default, the Voltage and
Current knob work in the
(Fine control)
coarse mode. To activate the
fine mode, press the knob to
turn the FINE LED on.
· Coarse: 0.1V or 0.1A @ rotation click · Fine: the smallest digit @ rotation click
4. Use the Current knob to set the master output current.
5. To turn on the output (and LED), press the output key.
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OPERATION
6. For the master (CH1) output level and CV/CC status, refer to the CH1 meter and indicator.
Master (CH1) voltage level
Master (CH1) current level
CH1 meter reading shows the output voltage. In the above case, 20.0V.
CH1 meter reading shows the output current. In the above case, 2.000A.
7. Press the CH2 key (LED turns on) and use the Current knob to set the slave output current.
8. For the slave (CH2) output level and CV/CC status, refer to the CH1/CH2 meter and CH2 indicator.
Slave (CH2) voltage level
Slave (CH2) current level
The CH2 meter reading shows the output voltage. In the above case, 20.0V.
The CH2 meter reading shows the output current. In the above case, 3.000A.
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GPD-3303 Series User Manual
CH1/CH2 Tracking Parallel Mode
Background / Connection
Tracking parallel operation doubles the current capacity of the GPD-3303 series by internally connecting CH1 and CH2 in parallel and combining the output to a single channel. CH1 controls the combined output.
Output rating
0 ~ 30V/0 ~ 6A
1. Press the PARA/INDEP key to activate the tracking parallel mode. The key LED turns on.
2. Connect the load to the CH1 +/- terminals.
Note: this diagram shows non-European terminals. 32
OPERATION
3. To turn on the output, press the output key. The key LED turns on.
4. The CH2 indicator turns red, indicating tracking parallel (PARA) mode.
5. Press the CH1 key (LED turns on) and then use the Voltage and Current knob to set the output voltage and current. The CH2 output control is disabled. By default, the Voltage and (Fine control) Current knob work in the coarse mode. To activate the fine mode, press the knob to turn the FINE LED on.
6. For the output level and CV/CC status, refer to the CH1 meter and indicator.
Voltage level Current level
The CH1 meter reading shows the output voltage. In the above case, 20.0V.
Double the amount of CH1 current meter reading. In the above case, 2.0A x 2 = 4.0A.
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GPD-3303 Series User Manual
SAVE/RECALL SETUP
Save Setup
Background
The front panel settings can be stored into one of the four internal memories.
Contents
The following list shows the setup contents. · Independent / tracking series / tracking parallel
mode · CH1/CH2 knob selection · Fine/coarse editing mode · Output voltage/current level
The following settings are always saved as "off". · Output on/off · Front panel lock/unlock
Panel operation
Press one of the 1~4 Memory keys for 2 seconds, for example memory 1. The panel settings are saved in memory 1 and the key LED turns on. When the panel settings are modified, the LED turns off.
Note
When a setting is stored, the output automatically turns off.
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SAVE/RECALL SETUP
Recall Setup
Background
The front panel settings can be recalled from one of the four internal memories.
Contents
The following list shows the setup contents. · Independent / tracking series / tracking parallel
mode · CH1/CH2 knob selection · Fine/coarse editing mode · Output voltage/current level The following settings are always recalled as "off". · Output on/off · Front panel lock/unlock
Panel operation
Press one of the 1~4 Memory keys, for example memory 1. The panel settings saved in memory 1 are recalled. The key LED turns on. When the panel settings are modified, the LED turns off.
Note
When a setting is recalled, the output automatically turns off.
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GPD-3303 Series User Manual
REMOTE CONTROL
Remote Control Setup
Background
The GPD-3303D and GPD-3303S are capable of being remotely controlled via the USB connection.
Interface
USB slave port, rear panel
COM setting
Functionality check
Set up the COM port inside the PC according to the following list. · Baud rate: 9600 · Parity bit: None · Data bit: 8 · Stop bit: 1 · Data flow control: None
Run this query command via the terminal application such as MTTTY (Multi-threaded TTY). *IDN? This should return the identification information: Manufacturer, model name, serial number, firmware version. GW INSTEK, GPD-3303x, SN: xxxxxxxx, Vx.xx
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REMOTE CONTROL
Remote Connection Step
Entering the remote control mode
1. Connect the USB cable to the slave port.
2. The connection will be automatically established, and the front panel shows "USB...YES" message.
3. The power supply also automatically enters the lock state (the Lock key will become activated).
Leaving the remote control mode
1. Disconnect the USB cable from the rear. 2. The display shows "USB...NO" message.
3. Unlock the power supply by keep pressing the Lock key until it turns off.
4. The power supply goes back to the local operation mode. 37
GPD-3303 Series User Manual
Command Syntax
Command format
1: command header
2: output channel
3: separator
4: parameter
Output channel 1 (CH1) or 2 (CH2)
Parameter
Type
Description
Example
<Boolean>
boolean logic 0 (off), 1 (on)
<NR1>
integers
0, 1, 2, 3
<NR2>
decimal numbers 0.1, 3.14, 8.5
Note
Commands are not case-sensitive.
Error Messages
The following error messages might appear when the GPS-3303D or 3303S cannot accept the command.
Message contents
Descriptions
Program mnemonic The command length must be 15 characters
too long
or less.
Invalid character
Invalid characters, such as symbols, are entered. Example: VOUT#
Missing parameter
The parameter is missing from the command. Example: VSET: (should have a number)
Data out of range
The entered value exceeds the specification. Example: VSET:33 (should be 32V)
Command not allowed The entered command is not allowed in the circumstance. Example: trying to set CH2 output while in the tracking mode.
Undefined header
The entered command does not exist, or the syntax is wrong.
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REMOTE CONTROL
Command List
· Detailed descriptions of each command start from the next page.
· The "HELP" command shows all the below commands and their meanings, except for the HELP command itself.
ISET<X>:<NR2> ISET<X>? VSET<X>:<NR2> VSET<X>? IOUT<X>? VOUT<X>? TRACK<NR1> BEEP<BOOLEAN> OUT<BOOLEAN> STATUS? *IDN?
RCL<NR1> SAV<NR1> HELP? ERR?
Sets the output current. Returns the output current setting. Sets the output voltage. Returns the output voltage setting. Returns the actual output current. Returns the actual output voltage. Selects the operation mode. Turn on or off the beep. Turn on or off the output. Returns the GPS-3303D or GPS-3303S status. Returns the GPS-3303D or GPD-3303S identification. Recalls a panel setting. Saves the panel setting. Shows the command list. Returns the instrument error messages.
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GPD-3303 Series User Manual
Command Details
ISET<X>:<NR2>
Description Panel operation Response time Example
Sets the output current.
See page23
Minimum 70ms
ISET1:2.234 ISET1:2.23
Sets the CH1 output current to 2.234A (for GPD-3303S) Sets the CH1 output current to 2.23A (for GPD-3303D)
ISET<X>?
Description Panel operation Response time Example
Returns the output current setting. See page23 Minimum 80ms ISET1? Returns the CH1 output current setting
VSET<X>:<NR2>
Description Panel operation Response time Example
Sets the output voltage.
See page23
Minimum 70ms
VSET1:20.345 VSET1:20.3
Sets the CH1 voltage to 20.345V (for GPD-3303S) Sets the CH1 voltage to 20.3V (for GPD-3303D)
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REMOTE CONTROL
VSET<X>?
Description Response time Example
Returns the output voltage setting.
Minimum 80ms
VSET1?
Returns the CH1 voltage setting
IOUT<X>?
Description Response time Example
Returns the actual output current.
Minimum 80ms
IOUT1?
Returns the CH1 output current
VOUT<X>?
Description Panel operation Response time Example
Returns the actual output voltage.
See page23
Minimum 80ms
VOUT1?
Returns the CH1 output voltage
TRACK<NR1>
Description Panel operation NR1
Response time Example
Selects the operation mode: independent, tracking series, or tracking parallel.
See page27
0: Independent 1: Tracking series 2: Tracking parallel
Minimum 70ms
TRACK0
Selects the independent mode
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GPD-3303 Series User Manual
BEEP<Boolean>
Description Panel operation Response time Example
Turns the beep on or off.
See page21
Minimum 70ms
BEEP1
Turns on the beep
OUT<Boolean>
Description Panel operation Response time Example
Turns on or off the output.
See page21
Minimum 70ms
OUT1
Turns on the output
STATUS?
Description Response time Contents
Returns the GPD-3303D or GPD-3303S status.
Minimum 400ms
8 bits in the following format
Bit Item
Description
0 CH1
0=CC mode, 1=CV mode
1 CH2
0=CC mode, 1=CV mode
2, 3 Tracking 01=Independent, 11=Tracking series,
10=Tracking parallel
4 Beep
0=Off, 1=On
5 N/A
N/A
6 Output 0=Off, 1=On
7 N/A
N/A
42
REMOTE CONTROL
*IDN?
Description
Response time Contents
Returns the GPD-3303D or GPD-3303S identification.
Minimum 300ms
GW INSTEK,GPD-3303x,SN: xxxxxxxx, Vx.xx
(Manufacturer, model name, serial number, firmware version)
RCL<NR1>
Description Panel operation NR1 Response time Example
Recalls a panel setting.
See page35
1 4: Memory 1 to 4
Minimum 70ms
RCL1
Recalls the panel setting stored in memory 1
SAV<NR1>
Description Panel operation NR1 Response time Example
Stores the panel setting.
See page34
1 4: Memory 1 to 4
Minimum 70ms
SAV1
Stores the panel setting in memory 1
HELP?
Description Response time
Shows the command list. Minimum 1000ms
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GPD-3303 Series User Manual
Contents
ISET<x>:<NR2> Sets the value of current. VSET<x>:<NR2> Sets the value of voltage. x:1=CH1,2=CH2. ISET<x>? Return the value of current. VSET<x>? Return the value of voltage. IOUT<x>? Returns actual output current VOUT<x>? Returns actual output voltage. TRACK<NR1> Sets the output of the power supply working on independent or tracking mode. NR1:0=INDEP,1=SER,2=PARA; BEEP<Boolean> Sets the BEEP state on or off. OUT<Boolean> Sets the output state on or off. STATUS? Returns the power supply state. bit0:(CH1)0=CC,1=CV;bit1:(CH2)0=CC,1=CV;bit23=(TRACK)01=INDEP,1 1=SER,10=PARA;bit4:(BEEP)0=OFF,1=ON;bit6:(OUT)0=OFF,1=ON; *IDN? Returns instrument identification. RCL<NR0> Recall the setting data from the memory which previous saved. SAV<NR0> Saves the setting data to memory. NR0:1=Memory1,2=Memory2,3=Memory3,4=Memory4; ERR? Returns instrument error messages.
ERR?
Description
Response time Contents
Checks the error status of the instrument and returns the last error message.
Minimum 70ms
See page38 for the list of error messages.
44
FAQ
FAQ
Q1. I pressed the panel lock key but the output still turns on/off. A1. The output key is not affected by the panel lock key operation, for ensuring safety. Q2. The CH3 overload indicator turned on is this an error? A2. No, it simply means that the CH3 output current reached the maximum 3.0A and the operation mode turned from CV (constant voltage) to CC (constant current). You can continue using the power supply, although reducing the output load is recommended. Q3. The specifications does not match the real accuracies. A3. Make sure that the power supply is powered on for at least 30 minutes, within +20°C +30°C. Q4. The internal memory is not recording the panel setting correctly the output should be on. A4. The output is always stored or recalled as "off" to ensure safety. For more information, contact your local dealer or GWInstek at www.gwinstek.com.tw / marketing@goodwill.com.tw.
45
GPD-3303 Series User Manual
APPENDIX
Fuse Replacement
23B
Steps
1. Take off the power cord and remove the fuse socket using a minus driver.
2. Replace the fuse in the holder.
Rating 46
· 100V/120V:T6.3A/250V · 220V/230V:T3.15A/250V
APPENDIX
Specifications
24B
The specifications apply when the GPD-3303 series are powered on for at least 30 minutes under +20°C +30°C.
Output Ratings CH1/CH2 0 ~ 30V / 0 ~ 3A
Independent
CH1/CH2 0 ~ 60V / 0 ~ 3A
Series
CH1/CH2 0 ~ 30V / 0 ~ 6A
Parallel
CH3
2.5V/3.3V/5.0V, 3A
Voltage
Line
0.01% + 3mV
Regulation
Load
0.01% + 3mV (rating current 3A)
0.02% + 5mV (rating current > 3A) Ripple & Noise 1mVrms (5Hz ~ 1MHz)
Recovery Time 100s (50% load change, minimum
load 0.5A) Temperature 300ppm/°C
Coefficient
Current
Line
0.2% + 3mA
Regulation
Load
0.2% + 3mA
Ripple & Noise 3mArms
CH3 Specification Regulation Line 5mV
Load 15mV Ripple & Noise 2mVrms
Tracking Operation
Tracking Error 0.5%+10mV of Master (GPD-3303S) 0.5%+50mV of Master (GPD-3303D)
Parallel
Line: 0.01% + 3mV
Regulation
Load: 0.01% + 3mV (rating current 3A)
Load: 0.02% + 5mV
Series
(rating current > 3A) Line: 0.01% + 5mV
Regulation Load: 300mV
Meter Resolution GPD-3303D Voltage: 100mV
Current: 10mA
47
A Meter
V Meter Program Accuracy
Readback Accuracy
Insulation
Operation Environment
Storage Environment Power Source Accessories
Dimensions Weight
GPD-3303 Series User Manual
GPD-3303S Voltage: 1mV Current: 1mA
GPD-3303D 3.2A full scale, 3 digits 0.5" LED display
GPD-3303S 3.2A full scale, 4 digits 0.4" LED display
GPD-3303D 32V full scale, 3 digits 0.5" LED display GPD-3303S 32V full scale, 5 digits 0.4" LED display GPD-3303D ± (0.5% of reading + 2digits)
± (0.5% of reading + 2digits) GPD-3303S ± (0.03% of reading + 10mV)
± (0.3% of reading + 10mA) GPD-3303D ± (0.5% of reading + 2digits)
± (0.5% of reading + 2digits) GPD-3303S ± (0.03% of reading + 10mV)
± (0.3% of reading + 10mA) Chassis and 20M or above (DC 500V) Terminal Chassis and 30M or above (DC 500V) AC cord Indoor use, Altitude: 2000m Ambient temperature 0 ~ 40°C Relative humidity 80% Installation category: II, Pollution degree: 2 Ambient temperature 10 ~ 70°C Relative humidity 70% AC 100V/120V/220V/230V±10%, 50/60Hz User manual x1 Test lead GTL-104 x 2, GTL-105 x 1 (Europe) Test lead GTL-203 x 1, GTL-204 x 2 210 (W) x 130 (H) x 265 (D) mm Approx. 7kg
Options
48B
USB cable
GTL-246
USB 2.0, A-B type
48
APPENDIX
Declaration of Conformity
25B
We GOOD WILL INSTRUMENT CO., LTD.
(1) No.7-1, Jhongsing Rd., Tucheng City, Taipei County, Taiwan
(2) No. 69, Lu San Road, Suzhou City (Xin Qu), Jiangsu Sheng, China
declare, that the below mentioned product Type of Product: Power Supply
Model Number: GPD-3303D/GPD-3303S
are herewith confirmed to comply with the requirements set out in the
Council Directive on the Approximation of the Law of Member States
relating to Electromagnetic Compatibility (2004/108/EC, 89/336/EEC,
92/31/EEC, 93/68/EEC) and Low Voltage Directive (73/23/EEC,
93/68/EEC).
For the evaluation regarding the Electromagnetic Compatibility and
Low Voltage Directive, the following standards were applied: EMC
EN 61326-1: 2006 Electrical equipment for measurement, control and
laboratory use EMC requirements
Conducted Emission
Electrostatic Discharge
Radiated Emission
ClassA EN 61000-4-2: 1995 + A1:1998 +
A2:2001
EN 55011: 1998 + A1:1999 +
Radiated Immunity
A2:2002
EN 61000-4-3: 2002 + A1:2002
Current Harmonics
Electrical Fast Transients
EN 61000-3-2: 2000 + A2:2005
EN 61000-4-4: 2004
Voltage Fluctuations
Surge Immunity
EN 61000-3-3: 1995 + A1:2001
EN 61000-4-5: 1995 + A1:2001
-------------------------
Conducted Susceptibility
EN 61000-4-6: 1996 + A1:2001
-------------------------
Power Frequency Magnetic Field
EN 61000-4-8: 1993 + A1:2001
-------------------------
Voltage Dip/ Interruption EN 61000-4-11: 2004
Safety
Low Voltage Equipment Directive 73/23/EEC, 93/68/EEC
Safety Requirements
IEC/EN 61010-1: 2001
49
GPD-3303 Series User Manual
INDEX
automatic out off ..................21 banana plug...........................20 beep setting
contents .............................. 21 manual ...............................21 remote control...................42 caution symbol .......................5 cleaning the instrument.........7 COM setting, remote control ............................................36 command list ........................39 recalling the list.................43 common terminal, tracking series...................................27 cooling fan .............................17 safety instruction ................6 CV/CC CH1/CH2 indicator .........24 CH3 indicator....................26 operation theory .........10, 18 EN61010 declaration of conformity 49 measurement category ......6 pollution degree .................7 EN61326-1 .............................49 environment operation..............................7 specification ......................48 storage..................................8 error messages, remote control ..........................38, 44 front panel
50
lock (manual).................... 22 overview ........................... 14 fuse rating ................................. 46 replacing ........................... 46 safety instruction ............... 6 GPD series block diagram................... 12 dynamic load.................... 10 lineup................................. 11 list of features ................... 11 operation theory............... 12 technology overview ......... 9 ground symbol ....................... 5 identification information... 43 load connection .................... 20 operation mode independent...................... 23 remote control .................. 41 specifications .................... 47 tracking parallel ............... 32 tracking series................... 27 output current setting manual............................... 24 remote control .................. 40 output on/off FAQ ................................... 45 manual............................... 21 remote................................ 42 output voltage setting manual............................... 24 remote control .................. 40
overload indicator ................26 power supply
safety instruction ................6 setup ...................................19 socket overview ................17 specification.......................48 protective ground symbol .....5 rear panel overview .............17 recall settings manual ...............................35 remote ................................43 remote control command syntax ..............38 connection test ..................36 error messages ..................38
INDEX
interface............................. 36 save settings
manual............................... 34 remote................................ 43 service operation about disassembly ............. 6 contact ............................... 45 status, instrument ................ 42 tracking mode operation theory................. 9 UK power cord....................... 8 USB interface ........................ 36 warning symbol ..................... 5 wire, load .............................. 20
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