GW Instek GSM-20H10 User manual

Programmable High Precision DC
Source Meter
GSM-20H10
User Manual
GW INSTEK PART NO. 82SM320H10E01
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.

GSM-20H10 User Manual
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Table of Contents
SAFETY INSTRUCTIONS............................................. 5
Safety Notes ...........................................................5
Symbols..................................................................6
Guidelines..............................................................8
Power Cord For The United Kingdom ............... 10
OVERVIEW ................................................................. 12
Main Function ..................................................... 12
Overview........................................................................................12
Main Function ...............................................................................13
Key Features ..................................................................................15
Front Panel .......................................................... 17
Display & Parameter ....................................................................17
Control Panel.................................................................................23
Terminals .......................................................................................27
Rear Panel ............................................................ 27
Terminals .......................................................................................28
GETTING STARTED .................................................. 30
Safety Remind...................................................... 30
Prepare & Start Up .............................................. 31
Check The AC Voltage .................................................................31
Connect The AC Power Cord......................................................31
Turn The Power On ......................................................................32
Turn The Power Off......................................................................33
Terminal Connection ........................................... 33
Front/Rear Terminals ..................................................................33
Connect To Load ...........................................................................34
Sense Connect Methods ...............................................................35
Sense And Guard Selections........................................................37
Wires Selections ............................................................................39
Power On Settings ............................................... 40
BASIC OPERATION ................................................... 41

Table of Contents
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Preparation .......................................................... 41
Operating Environment ...............................................................41
Funtion Overview.........................................................................42
Parameter Setting Method ...........................................................44
Source Function ................................................... 46
Circuit Configuration ...................................................................46
V/I Output Range.........................................................................48
Sink Function.................................................................................53
Operation Precautions..................................................................54
Front Panel Programming Interface ...........................................55
Parameter Description And Operation ......................................56
Output Operation .........................................................................78
State Description ...........................................................................78
Measure Function ................................................ 80
Measurement Interface.................................................................80
V/I Meter .......................................................................................81
Ohms Meter ...................................................................................83
Calculation.....................................................................................85
Parameter Description And Operation ......................................87
Parameter Settings Of Calculation Function .............................91
Measurement Operations ............................................................97
State Description ...........................................................................97
Limit Function ..................................................... 99
Display Interface ...........................................................................99
Parameter Description And Operation ......................................101
External I/O...................................................................................115
Limit Operation.............................................................................117
State Description ...........................................................................119
Sequence Function............................................. 120
Display Interface ...........................................................................120
Features ..........................................................................................121
Parameter Description And Operation ......................................125
Generating Waveform And Exporting File ...............................132
Sequence Output...........................................................................135
TRIG Fuction ..................................................... 136
Programming Interface ................................................................136
Trigger Process................................................................................137
Parameter Description And Operation...........................................138
Interface Requirements ................................................................143
SYSTEM SETTINGS ..................................................145

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Range Limitation ............................................... 145
System Parameters ............................................ 148
Save/Recall........................................................ 156
Factory Settings ................................................. 157
Software Upgrade.............................................. 162
System Clock ..................................................... 165
Mobile Disk Usage ............................................ 166
REMOTE CONTROL ..................................................167
Setting Interface ................................................ 167
USB .................................................................................................167
RS-232.............................................................................................170
GPIB................................................................................................174
LAN ................................................................................................177
COMMAND SYNTAX ................................................181
SCPI Commands Overview............................... 181
Command Format.........................................................................181
Symbol Description ......................................................................182
Parameter Types ...........................................................................182
Command Abbreviations.............................................................183
Command Terminators................................................................184
Command List ................................................... 185
Calculate Instructions...................................................................185
Display Commands ......................................................................187
Data Format Commands..............................................................187
Output Commands.......................................................................187
Source Commands........................................................................188
Measurement Commands............................................................191
Status Commands .........................................................................193
System Commands .......................................................................194
Trigger Commands.......................................................................195
IEEE488.2 Common Commands.................................................196
Command Details .............................................. 198
Calculate Commands ...................................................................198
Display Commands ......................................................................226
Data Format Commands..............................................................227
Output Commands.......................................................................239
Source Commands........................................................................243

Table of Contents
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Measurement Commands............................................................286
Status Commands .........................................................................312
System Commands .......................................................................317
Trigger Commands.......................................................................328
IEEE488.2 Common Command...................................................344
Status Registers ................................................. 348
The Structure Of Status Registers ...............................................349
Programming And Reading Registers .......................................350
Status Byte And Service Request (SRQ).....................................351
Status Register Sets .......................................................................352
Queues............................................................................................356
Errors ................................................................. 358
Error Message................................................................................358
Command Errors ..........................................................................358
APPENDIX..................................................................364
Replacing The Fuse ........................................... 364
Battery Replacement ......................................... 365
Specification ...................................................... 366
Optional Accessories ......................................... 371
Declaration Of Conformity ............................... 372

GSM-20H10 User Manual
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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 Notes
This product is intended for use by qualified personnel who
recognize shock hazards and are familiar with the safety
precautions required to avoid possible injury. Read and follow
all installation, operation, and maintenance information carefully
before using the product.
Ensuring that the equipment is operated within its specifications
and operating limits, and ensuring that operators are adequately
trained. They must be trained in electrical safety procedures and
proper use of the instrument，and must be protected from
electric shock and contact with hazardous live circuits.
Exercise with extreme caution when a shock hazard is present.
Lethal voltage may be present on cable connector jacks or test
fixtures. A shock hazard exists when voltage levels greater than
30V RMS, 42.4V peak, or 60VDC.
For maximum safety, do not touch the product, test cables, or
any other instruments while power is applied to the circuit
under test.

SAFETY INSTRUCTIONS
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Do not touch any object that could provide a current path to the
common side of the circuit under test or power line (earth)
ground.
The instrument and accessories must be used in accordance with
its specifications and operating instrument, or the safety of the
equipment may be impaired.
Do not exceed the maximum signal levels of the instruments and
accessories as defined in the specifications and operating
information (as shown on the instrument or test fixture panels).
When fuses are used in a product, replace with the same type
and rating for continued protection against fire hazard.
Chassis connections must only be used as shield connections for
measuring circuits, NOT used as safety earth ground
connections.
If you are using a test fixture, keep the lid closed while power is
applied to the device under test. Safe operation requires the use
of a lid interlock.
Symbols
These symbols may appear in the manual or on the instrument.
ATTENTION
Ensure conditions or practices suit instrument in
case breakdown or operating life reduction of
instrument. Always read the associated
information very carefully before performing the
indicated procedure.
CAUTION
Ensure conditions or practices suit instrument in
case damage to the GSM-20H10 or to other
properties. Such damage may invalidate the
warranty.

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WARING
Ensure conditions or practices suit instrument in
case injury or death.
DANGER
If the symbol is marked on the instrument, it
means that the instrument can supply or measure
a voltage of 1000V or more, including the common
influence of normal voltage and common mode
voltage. Use standard safety precautions to avoid
personal exposure to these voltages.
GROUND
Protective Conductor Terminal, connect it to safety
earth ground using the wire recommended in the
user documentation
Indicates the terminal connected to the device
shell.
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
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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 disassemble the GSM-20H10 unless you
are qualified.
EN 61010-1:2010 specifies the measurement
categories and their requirements as follows.
The GSM-20H10 operates under category of Not
II, III, IV.
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.
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 GSM-20H10 operates under
degree 2.
Pollution degree 1: No pollution or only dry, non-
conductive pollution occurs. The pollution has no
influence.

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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
AC Input voltage range: 100~240VAC，50/60Hz
WARNING: To avoid electrical shock,
connect the protective grounding conductor of the
AC power cord to an earth ground.
Fuse
Fuse type: T2.0A/250V
WARNING:
Make sure to use the correct fuse type before
starting up.
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
instrument
WARNING:
Disconnect the power cord before cleaning the
instrument.
Use a soft cloth dampened in a solution of mild
detergent and water. Do not spray any liquid
into the instrument. Clean the exterior of the
instrument only.

SAFETY INSTRUCTIONS
10
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: < 80%
Temperature: -20°C to 70°C
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.
CAUTION: 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

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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. Any reconnected wires
must match the above label.

OVERVIEW
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OVERVIEW
This chapter contains a brief introduction to GSM-
20H10, including the main features, as well as an
overview of the front and rear panel. Use the Getting
Started chapter on page 30 to start up instructions and
how to setup the appropriate operation environment.
Main Function
Overview
The GSM combines a precise, low-noise, highly stable DC power
supply with a low-noise, high-impedance multimeter. It has 0.012%
basic accuracy with 61/2 digit resolution. At 41/2 digits display
resolution (Medium), the GSM delivers 520 readings/second over
the IEEE-488 bus. At 31/2 digits display resolution (Fast), it can read
up to 2000 readings/second into its internal buffer.
Because of its built-in source function, the GSM can be used to
generate a set of current voltage (I-V) characteristic curves, which is
very useful for semiconductor device and material testing.
It is equivalent to the combination of voltage source, current
source, voltmeter, amperemeter and ohmmeter.
The digital GSM is designed for routine testing and high-speed
production testing applications. In the manufacturing of
components and modules of communication, semiconductor,
computer, automobile and medical industry, GSM is of great
practical valuable for their various characteristics analysis and
production process testing.It is also usually used in testing and R &
D laboratories.

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Main Function
Four Quadrant Source Function (V/I)
GSM-20H10, as a conventional power supply, has the function of
automatic CC/CV crossover function. You can use the front panel to
set as voltage source or current source, and configure parameters
such as voltage testing, current testing, display digits, data sampling
period, power status, OVP, etc. The voltage and current testing
settings and the actual voltage/current testing value are displayed
on the LCD. V/I measurement, limit measurement, sequence output
and trigger functions are all extended on the basis of source
function. The relationship is shown in figure below:
For more source information, see page 46.
Measure Function (V/I/Ω)
GSM-20H10 can also be used as voltmeter/amperemeter and
ohmmeter to measure external voltage/current value and resistor
value. The measurement function can also comply five calculation
functions through the built-in mathematical functions: Power,
CompOhms, VarAlpha, Vceoff, DEV. The relevant parameter
settings can be set through the front panel keys and displayed on
the LCD. See page 80 for details.
Source
Limit Measure Sequence

OVERVIEW
14
* The user can define up to 5 operations through the remote
command. For details, see page 198.
Limit Function
There are three types of limits: compliance, coarse limits and fine
limits. And summarizes the two operating modes: grading and
sorting. For details, see page 99. Covers pass/fail condition for the
grading and sorting modes. For details, see page 109.
Sequence Function
There are four basic sweep types: linear Staircase, Logarithmic
staircase, Custom and SRC-MEM sweep. For details, see page 120.
TRIG Function
The trigger model consists of two layers (Arm Layer and Trigger
Layer) to provide versatility. Programmable counters allow
operations to be repeated, and various input and output trigger
options are available to provide source-measure synchronization
between the GSM and other instruments (via the Trigger Link). For
details, see page 136.
Remote Control
To meet the various needs of customers, the GSM-20H10 is designed
for USB (TMC), RS-232, GPIB and LAN remote control. For details,
see page 167.
External I/O port
The GSM-20H10 has external control signals for customers.
Including input trigger signal and output control signal. For details,
see Limit function on page 115 and Trigger function on page 143.

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Key Features
General
Low noise, the speed of fan is controlled by
thermostatic.
Compact, meets the 2U height and 1/2Rack width
requirement.
4.3 inch TFT LCD display.
Constant voltage and constant current operation
(CV/CC).
Front and Rear output control key
(FRONT/REAR).
Digital voltage and current settings by number
pad.
Alarm buzzer (BEEP).
Key lock function (LOCK).
Additional
˙Source-measure sweep capabilities (Linear and
Logarithmic staircase sweeps, source sweep list
of up to 2500 points, memory sweep of up to
100 instrument setups).
˙6-wire Ω measurement with programmable I-
source or V-source.
˙4-quadrant source and sink operation.
˙Up to 11 stages of limit testing with a built-in
comparator for pass/fail testing.
˙Digital I/O interface for component handler.
˙Five built-in math expressions, up to five user-
defined math expressions (remote command
only).

OVERVIEW
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˙Reading and setup storage, up to 2500 readings
and six storage area (four user settings, two
factory defaults) can be stored and recalled.
Protection
˙Overvoltage protection (OVP).
˙Overtemperature protection (OTP).
Interface
˙USB remote control.
˙RS-232 remote control.
˙GPIB remote control.
˙LAN remote control.

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Front Panel
LCD Display Numberpad and Power
Secondary function key on/off button
USB host port Auxiliary Funtion key Front panel Input/
function key Output terminals
Display & Parameter
Power on
Display
(Source)

OVERVIEW
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Description
The display is used primarily to program source and
compliance values and display the real measured
readings, The area is divided as follows.
①Status and Error messages
Status and error messages are displayed
momentarily, which are located on the top of the
display, indicate various states of operation. The
meaning of each status information is described
separately in each function introduction chapter.
The error message contains a variety of error
types, which can be read by instructions under
remote control. Typical error messages
description and types are listed in page 358.
②Reading Data/Format
The readback value is displayed with a resolution
of up to 61/2 digits. The number of display digits
can be changed by directly setting Digits or
modifying the refresh Speed. Take the highest
resolution of the readback voltage as an example:
The readback display area is divided into 3 parts:
1: sign, 2: value, 3: units.
˙The measured values of voltage, current and
resistor can be positive or negative.
˙The digital display has a total of 7 digits at
most, and the range is determined by the
integer digits combined with the unit.
When measuring V:
˙3 integer digits for 200V or 200mV range
˙2 integer digits for 20V range
˙1 integer digits for 2V range