GW Instek GPP-3610H User manual

Programmable DC Power Supply
GPP-3610H/GPP-7250
User Manual
82PP372500E01
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
3
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 ............................................................ 14
Front Panel .............................................................. 16
Rear Panel................................................................ 21
Constant Voltage/Constant Current Crossover
Characteristics ......................................................... 23
GETTING STARTED........................................................ 24
Start Up ................................................................... 25
Load Connection ...................................................... 26
Select front/rear panel output.................................. 28
Turning the Output On/Off ...................................... 29
BASIC OPERATION ........................................................ 30
Display Change ........................................................ 31
Source Function ....................................................... 34
Output Mode ........................................................... 39
Load Function .......................................................... 41
Sequence Function ................................................... 45
Set Sequence Output............................................... 45
Set Group Parameter............................................... 48
Construct Templet................................................... 49
Menu Tree................................................................ 52

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Save and Recall ........................................................ 54
Delay Function ......................................................... 57
Set Delay Output ..................................................... 57
Set Group Parameter............................................... 60
Menu Tree................................................................ 63
Save and Recall ........................................................ 65
Monitor Function ..................................................... 68
Set Monitor.............................................................. 68
Recorder Function.................................................... 71
Set Recorder............................................................. 71
External I/O Control................................................. 74
Key Function Description ........................................ 75
FILE OPERATION ........................................................... 78
Save/Recall .............................................................. 79
Restore Factory Default Settings .............................. 82
SYSTEM SETTINGS ........................................................ 83
System Information ................................................. 84
System Settings ....................................................... 85
Firmware Upgrading ................................................ 87
Description of Using Flash Drive ............................. 88
REMOTE CONTROL ....................................................... 90
Connection Usage .................................................... 92
RS-232 ...................................................................... 93
USB .......................................................................... 95
GPIB......................................................................... 96
LAN .......................................................................... 98
Command Syntax ................................................... 104
Command List ....................................................... 108
Measurement Instructions...................................... 108

Table of Contents
5
Display Functions .................................................... 108
Output Commands ................................................. 108
Source and Load Commands.................................. 109
Status Commands ................................................... 114
System Commands ................................................. 115
System Related Commands .................................... 116
IEEE488.2 Common Commands ............................ 116
Command Details .................................................. 118
Measurement Commands ...................................... 118
Display Commands ................................................. 120
Output Commands ................................................. 122
Source and Load Commands.................................. 126
Status Commands ................................................... 165
System Commands ................................................. 172
System Related Commands .................................... 181
SCPI Status Registers SCPI .................................... 182
Event Registers ........................................................ 184
Enable Registers ...................................................... 184
Status Byte Register................................................. 184
Standard Event Register .......................................... 186
Status Byte Register Commands............................. 187
Standard Event Register Commands ...................... 188
Other Status Register Commands .......................... 190
Errors..................................................................... 191
Error Message.......................................................... 191
APPENDIX ....................................................................192
Replacing the Fuse ................................................. 192
Specifications ........................................................ 193
Optional Accessories ............................................. 195
Declaration of Conformity ...................................... 196

GPP-3610H/GPP-7250 User Manual
6
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
Warning: Identifies conditions or practices that
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.

SAFETY INSTRUCTIONS
7
Safety Guidelines
General
Guideline
CAUTION
Do not place any heavy object on the unit.
Avoid severe impact or rough handling that
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.

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(Pollution Degree) EN 61010-1:2010 specifies
pollution degrees and their requirements as
follows.Pollution refers to “addition of foreign
matter, solid, liquid, or gaseous (ionized gases),
that may produce a reduction of dielectric
strength or surface resistivity”. The GPP Series
falls under degree 2.
․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, 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.
Power Supply
WARNING
AC Input voltage range:
100V/120V/220V/230V ±10%
Frequency: 50Hz/60Hz
To avoid electrical shock connect the protective
grounding conductor of the AC power cord to
an earth ground.
Fuse
WARNING
Fuse type: 100V/120V：T12A/250V，
220V/230V：T6.3A/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.

SAFETY INSTRUCTIONS
9
Cleaning the
power supply
Disconnect the power cord before cleaningit .
Use a soft cloth dampened in a solution of mild
detergent and water. Do not spray any liquid
into it.
Do not use chemicals 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
Storage
environment
Location: Indoor
Relative Humidity: < 70%
Temperature: -10°C to 70°C

GPP-3610H/GPP-7250 User Manual
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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:
Earth
Blue:
Neutral
Brown:
Live (Phase)
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 0.75mm2should 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.

OVERVIEW
11
OVERVIEW
This chapter contains a brief introduction to GPP-
3610H/GPP-7250 including the main features and
an overview of the front and rear panel. Use the
Getting Started chapter on page 24 to start up
instructions and how to setup the appropriate
operation environment.
Key Features ............................................................ 14
Front Panel .............................................................. 16
Rear Panel................................................................ 21
Constant Voltage/Constant Current Crossover
Characteristics ......................................................... 23

GPP-3610H/GPP-7250 User Manual
12
Introduction
Overview
The GPP-3610H/GPP-7250 regulated DC
power supply series are adjustable,
multifunctional work stations. The isolation
degree, from output terminal to chassis or from
output terminal to output terminal, is DC500V.
Load Mode
It has additional Load function 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/
Constant Current
The 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 CV/CC mode operation,
see page 23.

OVERVIEW
13
Display Change
Function
It provides up to 4 display types, each of which
can be well selected via setting. For details, see
page 30.
Output Waveform
Function
Under Source mode, user can customize a
certain V/I sequential waveform output. Under
Load mode, it is programmable for dynamic
load (below 1Hz). For details, see page 45.
Front and rear
output function
For the convenience of customers, It can be
operated by the panel menu or remote
command, so that it can be output on the front
and rear panels, please refer to page 28.
Remote Control
To meet the various needs of customers, the
GPP is designed for USB, GPIB ,LAN and RS-
232 remote control. For details, see page 90.
Additional
Function
Control signal of external switch is reserved for
user. For details, see page 74.

GPP-3610H/GPP-7250 User Manual
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Key Features
Features
Multiple Outputs:
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.
Operation
Digital panel control.
Output on/off control (ON/OFF).
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.
workable in Load Mode
4 types display modes available with 2 contents
and 2 waveforms respectively
Input/Output terminal (Control I/O)
Alarm buzzer (Beeper).
Key lock function (LOCK).
Front and rear output function
Multiple remote control interfaces (standard:
RS-232, USB; optional: GPIB, LAN)

OVERVIEW
15
Protection
Features
Overvoltage and overcurrent protection (OVP/
OCP)
Overtemperature protection (OTP).
Polarity Reverse Protection
Overload Protection (OPP in Load mode)
Interface
Remote Control RS-232 (standard)
USB remote control. (standard)
Control I/O (standard)
LAN remote control (optional)
GPIB & LAN remote control (optional)

GPP-3610H/GPP-7250 User Manual
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Front Panel
Display
Display
Interface
(Take GPP-3610H model as example)
Number
Pad
LCD
Scroll wheel
Arrow keys
Pad
Power button Front output terminals Function keys USB host

OVERVIEW
17
display
Channel/
Status
Power
display
V/I
setting
Voltage
display
Current
display
OVP/OCP
setting area
Channel no.
Breathing light status, displayed in yellow and
orange alternating. .
Channel status
Display the channel state
Power supply: green or red
Load Mode: orange
Voltmeter
Indicators
Displays the output voltage with up to 6 digits
of resolution. The default units are Volts (V).
Ammeter
Indicator
Displays the output current with up to 5 digits
of resolution. The default units are ampere (A).
Setting Display
Displays the voltage and current settings.
Display OVP/OCP settings

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Status
Indicator
Display the set function/remote control interface
: Current channel
: 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
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:
Output buttons
Individual output
The ON/OFF button is
operational individually by
each channel. The Output key
will light up when the output is
on.
ON:
Number pad
For parameter value setting

OVERVIEW
19
Scroll wheel &
Arrow keys
Scroll wheel is used to set each
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, Beeper,
Backlight, etc. For details, refer
to page 85.
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 78.
Lock key
It is used to disable all the
panel keys except for the
Output key.
Unlock
Press the F6 button to unlock,
which can disable remote
control and return to panel
operation.

GPP-3610H/GPP-7250 User Manual
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Terminals
terminal
Power output terminal or load
input terminal
GND terminal
Ground terminal