GWinsTek GPP-1326, GPP-2323, GPP-3323, GPP-4323 User Manual

Programmable DC Power Supply

GPP-1326/GPP-2323/GPP-3323/GPP-4323

User Manual

GW INSTEK PART NO. 82PP343230ED1

ISO-9001 CERTIFIED MANUFACTURER

Copyright Statement

This manual contains proprietary information, which is protected by copyright. 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 Dist., New Taipei City 236, Taiwan.

Table of Contents
Table of Contents
SAFETY INSTRUCTIONS ..................................................	6
Safety Symbols ...........................................................	6
Safety Guidelines .......................................................	7
Power cord for the United Kingdom .........................	10
OVERVIEW ....................................................................	11
Introduction.............................................................	12
Key Features ............................................................	15
Front Panel ..............................................................	17
Rear Panel................................................................	24
Constant Voltage/Constant Current Crossover
Characteristics .........................................................	26
GETTING STARTED ........................................................	27
Start Up ...................................................................	28
Load Connection ......................................................	29
Turning the Output On/Off ......................................	31
BASIC OPERATION ........................................................	32
Display Change ........................................................	33
Source Function .......................................................	36
Independent Output Mode .....................................	41
Tracking Series and Tracking Parallel Modes .........	42
Load Function ..........................................................	46
Sequence Function ...................................................	50
Set Sequence Output...............................................	50
Set Group Parameter ...............................................	52
Construct Templet ...................................................	54
Menu Tree................................................................	57
Save and Recall ........................................................	59
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	GPP Series User Manual
Delay Function .........................................................	62
Set Delay Output .....................................................	62
Set Group Parameter ...............................................	65
Menu Tree................................................................	68
Save and Recall ........................................................	70
Monitor Function .....................................................	72
Set Monitor ..............................................................	73
Recorder Function ....................................................	75
Set Recorder.............................................................	76
Enternal I/O Control ................................................	79
Key Function Description ........................................	81
FILE OPERATION ...........................................................	83
Save/Recall ..............................................................	84
Restore Factory Default Settings ..............................	87
SYSTEM SETTINGS ........................................................	88
System Information .................................................	89
System Settings .......................................................	90
Firmware Upgrading ................................................	92
Description of Using Flash Drive .............................	93
REMOTE CONTROL .......................................................	95
Connection Usage ....................................................	97
RS-232 ......................................................................	98
USB ..........................................................................	99
GPIB .........................................................................	101
LAN ..........................................................................	102
Command Syntax ...................................................	108
Command List .......................................................	112
Measurement Instructions......................................	112
Display Functions ....................................................	112
4

	Table of Contents
Output Commands .................................................	112
Source and Load Commands..................................	113
Status Commands ...................................................	118
System Commands .................................................	119
System Related Commands ....................................	120
IEEE488.2 Common Commands ............................	120
Command Details ..................................................	121
Measurement Commands ......................................	121
Display Commands .................................................	123
Output Commands .................................................	125
Source and Load Commands...............................	129
Status Commands ...................................................	170
System Commands .................................................	176
System Related Commands ....................................	185
SCPI Status Registers SCPI ....................................	186
Event Registers ........................................................	188
Enable Registers ......................................................	188
Status Byte Register.................................................	188
Standard Event Register ..........................................	190
Status Byte Register Commands.............................	191
Standard Event Register Commands ......................	192
Other Status Register Commands ..........................	194
Errors.....................................................................	195
Error Message..........................................................	195
Command Errors .....................................................	195
APPENDIX ....................................................................	199
Replacing the Fuse .................................................	199
Specifications ........................................................	200
Optional Accessories .............................................	203
Declaration of Conformity ......................................	204
	5

GPP Series User Manual

SAFETY INSTRUCTIONS

This chapter contains important safety instructions that you must follow during operation and storage. Read the following before any operation to insure your safety and to keep the instrument in the best possible condition.

Safety Symbols

These symbols may appear in the manual or on the instrument.

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 GPP or to other
								properties.
								DANGER High Voltage
								Attention Refer to the Manual
								Protective Conductor Terminal
								Earth (ground) Terminal
								Do not dispose electronic equipment as
								unsorted municipal waste. Please use a
								separate collection facility or contact the
								supplier from which this instrument was
								purchased.
6

			SAFETY INSTRUCTIONS
Safety Guidelines
General			Do not place any heavy object on the unit.
Guideline			Avoid severe impact or rough handling that
	CAUTION		leads to damaging the unit.
		Do not discharge static electricity to the unit.
		Do not block the cooling fan opening.
		Do not perform measurements on circuits that
			are directly connected to mains power.
		Do not disassemble the GPP unless you are
			qualified.
			(Measurement categories) EN 61010-1:2010
			specifies the measurement categories and their
			requirements as follows. The GPP 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.
Power Supply			AC Input voltage range:
			100V/120V/220V/230V ±10%
	WARNING		Frequency: 50Hz/60Hz

To avoid electrical shock connect the protective grounding conductor of the AC power cord to an earth ground.

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			GPP Series User Manual
Fuse			Fuse type: 100V/120V T6.3A/250V
	WARNING		220V/230V T3.15A/250V
		To prevent fire, replace the fuse only with the
			specified type and rating.
		Disconnect the power cord before replacing the
			fuse.
		Make sure the cause of fuse blowout is fixed
			before replacing the fuse.
Cleaning the			Disconnect the power cord before cleaning the
power supply			oscilloscope.
		Use a soft cloth dampened in a solution of mild
			detergent and water. Do not spray any liquid
			into the oscilloscope.
		Do not use chemicals containing harsh products
			such as benzene, toluene, xylene, and acetone.
Operation			Location: Indoor, no direct sunlight, dust free,
Environment			almost non-conductive pollution (Note below)
		Relative Humidity: < 80%
			Altitude: < 2000m
		Temperature: 0°C to 40°C

8

SAFETY INSTRUCTIONS

(Pollution Degree) EN 61010-1:2010 specifies pollution degrees and their requirements as follows. The GPP 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 nonconductive pollution occurs. Occasionally, however, a temporary conductivity caused by condensation must be expected.

Pollution degree 3: Conductive pollution

		occurs, or dry, non-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 nor
		humidity is controlled.
Storage		Location: Indoor
environment		Relative Humidity: < 70%
		Temperature: -10°C to 70°C

9

Earth Neutral Live (Phase)

GPP Series User Manual

Power cord for the United Kingdom

When using the power supply 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:

Blue:

Brown:

As the colours of the wires in main leads may not correspond with the coloured 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 either the letter E, the earth symbol or coloured Green/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, a 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 exposed wiring from a cable, plug or connection that is engaged in a live socket is extremely hazardous. If a cable or plug is deemed hazardous, turn off the mains power and remove the cable, any fuses and fuse assemblies. All hazardous wiring must be immediately destroyed and replaced in accordance to the above standard.

10

OVERVIEW

OVERVIEW

This chapter contains a brief introduction to GPP series including the main features and an overview of the front and rear panel. Use the Getting Started chapter on page 27 to start up instructions and how to setup the appropriate operation environment.

Introduction.............................................................	12
Key Features ............................................................	15
Front Panel ..............................................................	17
Rear Panel................................................................	24
Constant Voltage/Constant Current Crossover
Characteristics .........................................................	26

11

		GPP Series User Manual
Introduction
Overview		The GPP series regulated DC power supply
		series are light weight, adjustable,
		multifunctional work stations. The GPP-1326
		has a 1 independent adjustable voltage outputs
		with sense.The GPP-2323 has a 2 independent
		adjustable voltage outputs. The GPP-3323 three
		independent outputs: two with adjustable
		voltage levels and one with fixed level
		selectable from 1.8V, 2.5V, 3.3V and 5V. The
		GPP-4323 has four independent voltage
		outputs that are all fully adjustable.
		The GPP 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 /		The three output modes of GPP series,
Tracking Series /		independent, tracking series, and tracking
Tracking Parallel		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 500V.
		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.
12

		OVERVIEW
Load Mode		The GPP series models have additional Load
		function on both CH1 & CH2 with 3 modes:
		CV (Constanct Voltage), CC (Constant Current)
		and CR (Constant Resistance), all of which can
		be selected through the function keys on the
		front panel. Voltage, current and resistance can
		be well regulated in each mode, respectively.
Constant Voltage/		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 page 26.
Automatic		The front panel display (CH1, CH2) shows the
tracking mode		output voltage or current. When operating in
		the tracking mode, the power supply will
		automatically connect to the autotracking
		mode.

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		GPP Series User Manual
Display Change		The GPP series provides up to 7 display types,
Function		each of which can be well selected via setting.
		For details, see page 32.
Output Waveform		Under Source mode of the GPP series, user can
Function		customize a certain V/I sequential waveform
		output. Under Load mode, it is programmable
		for dynamic load (below 1Hz). For details, see
		page 50.
Remote Control		To meet the various needs of customers, the
		GPP is designed for USB, GPIB and LAN
		remote control. For details, see page 95.
Additional		Control signal of external switch is reserved for
Function		user. For details, see page 79.

14

OVERVIEW

Key Features

Multiple Outputs:

Features

GPP-1326 32V/6A x 1 GPP-2323 32V/3A x 2 (CH1/CH2) GPP-3323 32V/3A x 2 (CH1/CH2)

1.8V/2.5V/3.3V/5V/5A x 1 (CH3) USB Port Output 3A

GPP-4323 32V/3A x 2 (CH1/CH2)

5V/1A x 1 (CH3) 15V/1A x 1 (CH4)

Constant voltage and constant current operation (CV/CC).

Low noise, thermostatically controlled fan.

Compact, lightweight, standard rack mount comformity 3U, half Rack.

4.3 inch TFT display.

15

GPP Series User Manual

Digital panel control.

Operation

Output on/off control (ON/OFF), and each channel can be controlled separately.

Digital voltage and current settings. (Key & Encode)

10 groups of save/recall settings and 2 groups of power-on settings.

10 groups of save/recall Sequence.

10 groups of save/recall Delay.

10 groups of save/recall Record.

CH1/CH2 workable in Load Mode

7 types display modes available with 5 contents and 2 waveforms respectively

Input/Output terminal (Control I/O)Alarm buzzer (BEEP).

Key lock function (LOCK).

Multiple remote control interfaces (standard: RS232, USB; optional: GPIB, LAN)

	Protection	Overvoltage and overcurrent protection (OVP/
		OCP)
	Features
		Overtemperature protection (OTP).
		Polarity Reverse Protection
		Overload Protection (OPP in Load mode)

Remote Control RS-232 (standard)

Interface

USB remote control. (standard)Control I/O (standard)

LAN remote control (optional)

GPIB & LAN remote control (optional)

16

								OVERVIEW
Front Panel
		Number		Scroll wheel/ Function
LCD		pad		Arrow keys keys

Power button		Front panel		USB host
		output terminals

*The panel above is the example of GPP-4323. For other models, refer to page 23.

Display

Display

Interface

(Take GPP-4323 model as example)

17

GPP Series User Manual

Channel distribution

Single channel display

Channel no.

Channel status

Voltmeter

Indicators

18

Channel number and distribution vary by models with different colors identifications: CH1: Yellow CH2: Blue CH3: Pink CH4 Green CH1 is master and CH2 becomes yellow under tracking series and tracking parallel modes.

Channel/					Voltage
Status					display
Power					Current
display					display
V/I					OVP/OCP
setting					setting area

Color of channel remains the origanl	when
not in the state of setting.

Color of channel blinks between the original and orange when being set.

Display active channel state

Power supply: CH1/CH2/CH3/CH4: green or red

Load Mode: CH1/CH2: orange

Displays the output voltage with up to 6 digits of resolution. The default units are Volts (V).

OVERVIEW

	CH1
	CH2
	CH3	(GPP-4323)
		(GPP-3323)
	CH4
Ammeter	Displays the output current with up to 5 digits
Indicator	of resolution. The default units are ampere (A).
	CH1:
	CH2
	CH3	(GPP-4323)
	CH4
Setting Display	Displays the voltage and current settings.
	CH1/CH2/CH3/CH4:
	CH3(GPP-3323) displays setting of voltage only

Display OVP/OCP settings

CH1/CH2/CH3/CH4:

The CH3 OVP of GPP-3323 is a fixed value (approx. 5.5V), non-configurable and with only on or off switch available for user. OCP is available only for USB output port (approx. 3.1A)

19

		GPP Series User Manual
Status	Display the set function/remote control interface
Indicator
	: The active channel under setting status
	: The status of OTP protection mode
	: The status of USB flash drive connected
	: USB remotely disconnected
	: USB remotely connected
	: The status of control I/O connected
	Others: when operating in the series/parallel
	tracking mode, the corresponding SER/PAR icons
	appear on the display.
	when Sequence/Delay/Monitor/Recorder is
	activated, the corresponding SEQ/DLY/MON/
	REC icons appear on the display.
Function Keys
Power Button		Turns the power on or off.
		On:
		Off:
Channel select		Each channel has its own
buttons		button and promptly
		switchable among CH1-CH4
		setting.
Output buttons	Individual	The ON/OFF button is
	output	operational individually by
		each channel. The Output key
		will light up when the output is
		on.
		ON:
	Output all	All ON:

20

OVERVIEW

Number pad

For parameter value setting

Scroll wheel &	Scroll wheel is used to set each
Arrow keys	parameter value, whilst arrow
	keys are used for parameter,
	menu selection and
	voltage/current fine
	adjustment. It is used to switch
	or operate the displayed
	waveforms under diagram
	display mode.
Function keys	The 6 function keys (F1-F6)
	display varied functions per
	different opertations.
System key	It is used to set functions
	including Interface, Beep,
	Backlight, etc. For details, refer
	to page 90.
Advance key	It is used for certain advanced
	functions like Sequence, Delay,
	Monitor, Recorder, etc.
Memory key	It is used to operate several
	functions including save and
	recall, etc., for set parameters.
	For details, refer to page 83.
Lock key	It is used to disable all the
	panel keys except for the
	Output key.
	21

			GPP Series User Manual
		Unlock	Press the F6 button to unlock,
			which can disable remote
			control and return to panel
			operation.
	Terminals
CH1 terminal			Power output terminal or load
			input terminal
CH2 terminal			Power output terminal or load
			input terminal
CH3 terminal			Power output terminal

Power output terminal (GPP3323 only)

Warning: The output current from the 2 terminals should Not exceed 5A for GPP-3323.

CH4 terminal	Power output terminal
GND terminal	Ground terminal
Voltage	Sense terminal of power
feedback	output (1326 only)
terminal
(SENSE)
22

OVERVIEW

Panels of other models:

GPP-1326

GPP-2323

GPP-3323

23

GPP Series User Manual

Rear Panel

Terminals
Alternate	AC voltage selection:
input switch
	100V/120V/220V/230V
	±10%, frequency 50/60Hz
AC input	The AC input accepts
socket and	100V/120V/220V/230V
line fuse	AC. The frequency is
	50Hz/60Hz.
	Fuse:
	100V/120V: T6.3A/250V
	220V/230V :T3.15A/250V
	slow-blow type, See page
	199 for details.
USB port	USB device port for remote
	control. See page 95 for
	details.
24

	OVERVIEW
GPIB port	GPIB slave port for remote
	control. Abides to
	IEEE488.2 (SCPI) protocol.
	See page 101 for details.
LAN port	LAN port for remote
	control. See page 102 for
	LAN setting and operation
	details.
RS 232 port	RS232 port for remote
	control. See page 98 for
	details.
Heat sink
fan

Control I/O	5 ports in all for
port	input/output control. See
	page 79 for details of
	configuration.

25

GPP Series User Manual

Constant Voltage/Constant Current

Crossover Characteristics

Background	The unit will switch automatically between
	constant voltage and constant current
	according to changes in the load.
CV mode	When the load current is less than the current
	setting, the unit operates in constant voltage
	mode, changing the current level according to
	the load but maintaining the set voltage level
	until the current reaches the set current level.
	The status indicator will show CV on the LCD
	when in CV mode.

Constant Current When the output current reaches the set Mode current level, the unit switches operation to

constant current mode. The status indicator will show CC on the LCD display. In CC mode, the current level is maintained and the voltage level is limited to less than the set voltage level to limit the output power from an overload. When the current drops below the set current level, the unit will revert back to CV mode.

Diagram	Vout
	Vmax
	Constant
	Voltage
	Constant
	Current
	Imax	Iout

26

GETTING STARTED

GETTING STARTED

This chapter describes the start up procedures and the preparation that is necessary before operating the power supply.

Start Up ...................................................................	28
Load Connection ......................................................	29
Turning the Output On/Off ......................................	31

27

GPP Series User Manual

Start Up

Checking the AC Before the power is turned Voltage on, confirm that the input

power supply meets the following conditions: 100V/120V/220V/230V ±10% 50/60Hz

Connecting the AC power cord

The fuse is a slow-blow fuse. 3.15A 220V/230V 6.30A 100V/120V

Confirm that the fuse is of the correct type and rating before connecting the power cord.

Turning the	Press the power button.
power on
Turning the	To turn the power off, press
power off	the power button again.

28

				GETTING STARTED
Load Connection
	Recommended	Model	Specification	Usage
	Cables
		GTL-	10A	Front panel terminal
		104A
		GTL-105A	3A	Sense 1326 only

Front panel wiring

Caution

Use the GTL-104A cables for the front panel source connections.

USB Type A only

(Greater than 4A)

Use the GTL-105A cables for the GPP-1326 sense connections. Or connect + to S+, - to S- terminal with a short bar.

For safety considerations, please keep in mind that the wiring must be equivalent to the wiring on the front terminals.

Wire Gauge	Load wires must have enough current capacity
	to minimize 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
		29

		GPP Series User Manual
16		6
	14	10
12		16

30