GW Instek GPM-8320 User manual

Digital Power Meter
GPM-8320/8330
USER MANUAL
Rev. A
ISO-9001 CERTIFIED MANUFACTURER
Ihr Ansprechpartner /
Your Partner:
dataTec AG
E-Mail: [email protected]
>>> www.datatec.eu

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 .................................................. 5
GETTING STARTED........................................................ 10
Characteristics......................................................... 11
Appearance.............................................................. 15
Set Up ..................................................................... 25
BASIC SETTING ............................................................. 27
Setting up measurement range ................................ 29
Setting up measurement status ............................... 33
Setting up System status ......................................... 70
MEASUREMENT AND OTHER FUNCTIONS .................... 80
Measurement function ............................................ 81
Other functions ....................................................... 94
Integration measurement function .......................... 97
Graph measurement function ................................ 107
DIGITAL I/O / DA12......................................................125
Digital I/O / DA12 Overview.................................. 126
External Remote Control ........................................ 128
DA12 Output Function........................................... 129
REMOTE CONTROL ......................................................134
Configure Remote Control Interface....................... 135
Configure EOL Character ....................................... 142
Return to Local Control ......................................... 142
COMMAND OVERVIEW ................................................143
Command Syntax ................................................... 143
Command List ....................................................... 147

GPM-8320/8330 User Manual
4
APPENDIX ....................................................................228
Specifications ........................................................ 229
Status system ........................................................ 239
Dimensions ........................................................... 243
Certificate Of Compliance ...................................... 244
Power measurement .............................................. 245

SAFETY INSTRUCTIONS
5
SAFETY INSTRUCTIONS
This chapter contains important safety
instructions that you must follow during
operation and storage. Read the following before
any operation to ensure your safety and to keep
the instrument in the best possible condition.
Safety Symbols
These safety symbols may appear in this 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 GPM-8320/8330
or to other properties.
DANGER High Voltage
Attention Refer to the Manual
Protective Conductor Terminal
Earth (ground) Terminal

GPM-8320/8330 User Manual
6
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
 Make sure that the voltage input level does not
exceed AC600V.
 Make sure the current input level does not
exceed 20A.
 Do not place any heavy object on the
instrument.
 Avoid severe impact or rough handling that can
lead to damaging the instrument.
 Do not discharge static electricity to the
instrument.
 Use only mating connectors, not bare wires, for
the terminals.
 Do not block or obstruct the cooling fan vent
opening.
 Do not perform measurement at the source of a
low-voltage installation or at building
installations (Note below).
 Do not disassemble the instrument unless you
are qualified as service personnel.
 Make sure that the COM terminal to earth is
limited to 600Vpk.
 Remove all test leads before disconnecting the
mains power cord from the socket.
 If the equipment is used in a manner not
specified by the manufacturer, the protection
provided by the equipment may be impaired.
 The device should be placed in a place where
the plug connected to it can be removed easily.
 Interface: USB / RS232 / LAN2/ Mini GPIB
/Digital IO DA12 ports are only to be connected
to the circuits which are separated from mains
supply by double / reinforce insulation.

GPM-8320/8330 User Manual
8
(Note) EN 61010-1:2010 specifies the measurement categories and
their requirements as follows. The GPM-8320/8330 falls under
category II 600V.
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.
Power Supply
WARNING
AC Input voltage: 100-240 VAC 50/60Hz
The power supply voltage should not fluctuate
more than 10%.
Connect the protective grounding conductor of
the AC power cord to an earth ground, to avoid
electrical shock.
Cleaning the
Instrument
Disconnect the power cord before cleaning.
Use a soft cloth dampened in a solution of mild
detergent and water. Do not spray any liquid.
Do not use chemicals containing harsh material
such as benzene, toluene, xylene, and acetone.
Operation
Environment
Location: Indoor, no direct sunlight, dust free,
almost non-conductive pollution (Note below)
Temperature: 0°C to 40°C
Humidity: < 30°C: < 80%RH(non-condensing);
30°C~40°C:<70%RH(non-condensing);
>40°C: <50%RH (non-condensing)
Altitude: <2000m
Overvoltage category: OVC II

SAFETY INSTRUCTIONS
9
(Note) EN 61010-1:2010 specifies the pollution degrees and their
requirements as follows. The GPM-8320/8330 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, 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
environment
 Location: Indoor
 Temperature: -40°C to 70°C
 Humidity: <90%RH(non-condensing)
Disposal
Do not dispose this instrument as unsorted
municipal waste. Please use a separate collection
facility or contact the supplier from which this
instrument was purchased. Please make sure
discarded electrical waste is properly recycled to
reduce environmental impact.

GPM-8320/8330 User Manual
10
GETTING STARTED
This chapter describes the GPM-8320/8330 in a
nutshell, including accessories, package contents,
its main features and front / rear panel
introduction.
Characteristics ......................................................... 11
Accessories.......................................................................... 13
Package Contents................................................................ 14
Appearance.............................................................. 15
Front Panel..........................................................................15
GPM-8320/8330.......................................................15
Main Display Overview ....................................................... 18
Rear Panel ........................................................................... 21
GPM-8330 ................................................................21
GPM-8320 ................................................................21
GPM-8330 (without GPIB +DA 12 interface)..........22
Set Up ..................................................................... 25
Power Up............................................................................. 25
Connect the wires to the GPM-8320/8330......................... 26

GETTING STARTED
11
Characteristics
The GPM-8320/8330 is a high-precision, programmable power
meter for using increase 3-phase simultaneous measurement, for
high power, such as motors, etc.. It equips with a color TFT-LCD
screen and also multiple graph displays which are very convenient
for reading the measurement results. The GPM-8320/8330 has
become a reliable power measurement instruments because of its
simple operation, excellent performance, user-friendly graph
displays and automatic measurement interface.
Operation
 Press the buttons on the front panel to easily
turn on the GPM-8320/8330 measurement
function. All settings and measurements results
are displayed on the 5-inches TFT-LCD screen
panel for easy use of each function.
 Standard display mode: 2 main measurement
results and 8 secondary measurement results are
displayed in this screen.
 Simple display mode: 4 major measurement
results are displayed in this screen.
Performance
 7 selectable voltage ranges available from 15V to
1000V with 0.1% of reading + 0.05% of range.
 6 selectable current ranges available from 0.5A
to 20A with 0.1% of reading + 0.05% of range.
 It can even measure the voltage of abnormal
wave of CF 3. The half-range CF is up to 6 or 6A.
 It can even measure the current of abnormal
wave of CF 3. The half-range CF is up to 6 or 6A.
 Total harmonic distortion measurement.
 50-orders harmonic test and analysis function.
 Graph display for measurement results
including harmonic orders distribution.
 Plug-in USB disk data store function including

GPM-8320/8330 User Manual
12
log and screenshot.
 Auto range function for integration
measurement.
Features
 Full five-digit measurement.
 Voltage measurement range: 15V ~ 1000V or
automatic switching
 Current measurement range: 0.5A ~ 20A or
automatic switching
 3-channel simultaneous display screen and total
calculation value screen
 Maximum accuracy of 0.1% of reading + 0.05%
of range
 2 main measurement readings and 8 minor
measurement readings are displayed in the
screen of standard display mode.
 4 main measurement readings are displayed in
the screen of simple display mode.
 Added stand-alone display of total harmonic
distortion measurement function (50 steps)
 Test bandwidth of voltage and current: DC ~
100kHz.
 Selectable boot settings (Previous / Default)
 Waveform display up to 10kHz along with
Harmonic bar and list table
Interface
 Interface: USB/ RS232/ LAN/ Mini
GPIB/Digital IO DA12
Application
 It can be applied to production test such as
power supplies, transformers, motors, electrical
equipment.

GETTING STARTED
13
Accessories
Standard
Accessories
Part number
Description
Q’ty
User Manual CD
1
82GW1SAFE0M01
Safety Instruction Sheet
1
Region dependent
Power Cord
1
GTL-209
Test leads (For GPM-8330)
3
GTL-209
Test leads (For GPM-8320)
2
GTL-212
Test leads (For GPM-8330)
3
GTL-212
Test leads (For GPM-8320)
2
GPM-002
Terminal Cover
1
Optional
Accessories
Part number
Description
GTL-234
RS232C cable
GTL-246
USB cable
GTL-248
GPIB cable
GCP-300
Current Probe
GRA-452
Rack Adapter Panel (19”, 3U)
Option
Name
Description
GPM-DA12
GPIB+DA12 interface card
(Factory installed)

GPM-8320/8330 User Manual
14
Package Contents
Check the contents before using the instrument.
Opening the box
Contents
(single unit)
Main unit
Test lead sets
(depends on model)
Terminal Cover
Power cord x1 (region
dependent)
User manual CD
Safety instruction
sheet

GETTING STARTED
15
Appearance
Front Panel
GPM-8320/8330
3 4 5 1
11
6
7
8
9
10
1213
2
14
1
Power Key
Turns On or Off the main
power. For the power up sequence,
see page 25.
2
Soft keys
The 5 soft keys have varied functions
from the OSD (On-Screen Display)
options, individually, per different
settings.
3
USB Host
Port
Connects with USB flash drive for
data storage or screenshot.

GPM-8320/8330 User Manual
16
4
Hardcopy key
Captures the current screenshot or
saves the data log for reading. For
details, refer to page 65.
5
Waveform key
It can simultaneously display voltage,
current and power waveforms.
Display one channel at a time.
6
Wiring key
There are 1P3W, 3P3W, 3P4W, 3V3A
wiring more available.
7
Harmonic key
Setting parameters of 3 phases can
display 50-order harmonic values or
graphics.
8
Enter Key
This button is used to enter the menu,
confirm the settings and switch
between the standard display mode
and simple display mode (no function
table and display icon). See page 95.
9
Arrow Keys
This four arrow keys are used to
edit the parameters, browse the
menu system and select the
parameter range.
10
Trigger key
Activates the Trigger function. See
page 95.
11
ESC Key
Press this button to cancel the current
setting. The cursor returns to the
default position or return to the
previous menu according to the
situation. See page 95.
12
Function Keys
V-Range key, up/down arrow keys
and Enter key can be used together to
select a voltage range or auto range
measurement mode. Also, press and
hold the V-Range key to toggle
between manual and auto range
setting. See page 29.

GETTING STARTED
17
I-Range key, up/down arrow keys
and Enter key can be used together to
select a current range or auto range
measurement mode. Also, press and
hold the I-Range key to toggle
between manual and auto range
setting. See page 29.
Press this button to display the
maximum measurement reading. See
page 94.
Press this key to select measure mode
(DC/AC/AC+DC/V-MEAN). See
page 96.
Press this key to enter the
measurement settings menu. See page
33.
Press this key to switch window and
stop refreshing. See page 95.
Use the left and right
arrow keys to select
Integrator mode, and
press Enter button to
enter the time integrator
function. See page 97.
Press this key to toggle to key lock. In
Remote control mode, press this
button to switch to local mode. See
page 95.
13
LCD
14
F1~F5
function keys

GPM-8320/8330 User Manual
18
Main Display Overview
1
2 3 54 6 7 8 9 10 11 12 13 14
15
16
17
18
19
20
21
22
23
No.
Item
Status icon
Description
1
Voltage Range
V-A 15V
Voltage measurement range.
Example here range is 15V.
V-Auto means that Voltage Auto
Range is turned on.
2
Current Range
I-A 2A
Current measurement range.
Example here range is 2A.
I-Auto means that Current Auto
Range is turned on.
Note
If status icon of Voltage Range or Current Range lit in
red means that the range selected is inappropriate or
are restricted. Please select another range again.
3
Wiring mode
1P3W
This icon displays present wiring
mode (1P3W, 3P3W, 3P4W, 3V3A).

GETTING STARTED
19
4
Mode
AC+DC
Measurement mode
(AC, DC, AC+DC, V-MEAN)
5
Date Update
Rate
Update
0.25s
Data update rate
(0.1/0.25/0.5/1/2/5/10/20/Auto)
6
Crest Factor
CF3
Crest Factor (3/6/6A)
7
Remote
RMT
Remote control mode (On/Off)
8
Ratio State
Scaling
The icon will lit when any external
magnification (voltage, current,
power) is activated,
9
Maximum
Hold
MAX Hold
Retain and display the maximum
measurement reading.
10
Average
AVG-8
Average number of sampling
(8/16/32/64)
11
Sync Source
SYNC.V
Synchronization source (V/I/Off)
12
Harmonic
Calculation
HRM.I
Harmonic calculation method
(IEC/CSA/Off)
13
Measure
Storage
STORE
Measured date storage (On/Off)
14
External Input
EXT1
External signal input function
(Ext1/Ext2/Off)
15
Peak Voltage
P.V
The voltage exceeds the
measurement range
16
Peak Current
P.I
The current exceeds the
measurement range
17
Display Hold
Hold
Retain and display the current
measurement reading.
18
Keyboard Lock
Key Lock
Lock Key button
19
Frequency
Filter
F.F
Frequency filters (On/Off)

GPM-8320/8330 User Manual
20
20
Secondary
menus
Display secondary function menu
To navigate the secondary function menu, use
left and right arrow keys alternately. The arrow
keys are loopback, which means, for example,
when it stops at Graph, press the right arrow
key to move to Enlarge in a promptly loopback
manner.
 Enlarge
This function key is used to
switch display of measurement
result from 2 major plus 8 minor
to 4 major ones.
 Integrator
This function key is used to set up
integrator measurement
parameters and execute integrator
measurement function.
 Parameter
This function key is used set up
measurement parameters.
 System
This function key is used to enter
the system setting and system
configuration screens.
 Graph
This function key is used to set up
graph measurement settings and
execute measurement in the
intuitive graph displays.
21
Simple Display
Mode
Display the measurement result of 4 major
measurement parameters
22
Standard
Display Mode
Display the measurement result of 2 major and 8
minor measurement parameters
23
Line Filter
L.F
Voltage and current filters (On/Off)