GW-INSTEK GPT-12001 User guide

Electrical Safety Analyzer

GPT-10000 Series

USER MANUAL

ISO-9001 CERTIFIED MANUFACTURER

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 .................................................. 5

GETTING STARTED .......................................................... 9

GPT-12000 Series Overview ................. 10

Front Panel Overview ........................... 14

Rear Panel Overview ............................ 18

Set Up .................................................. 21

OPERATION .................................................................. 28

Menu Tree ............................................ 30

Test Lead Connection ........................... 35

Manual Tests ....................................... 38

Special MANU Test Mode (000) ........... 89

Sweep Function.................................... 91

Automatic Tests ................................... 94

System Settings ................................. 118

EXTERNAL CONTROL ................................................... 158

External Control Overview .................. 159

REMOTE CONTROL ...................................................... 165

Interface Configuration ...................... 166

Command Syntax ............................... 170

Command List ................................... 173

Error Messages .................................. 228

FAQ .............................................................................. 229

APPENDIX .................................................................... 231

Fuse Replacement .............................. 231

Test Errors ......................................... 232

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GPT-10000 Series User Manual

GPT-12000 Specifications .................. 234

GPT-12001/12002/12003 Dimensions 240

GPT-12004 Dimensions ...................... 241

Declaration of Conformity .................. 242

INDEX .......................................................................... 243

4

SAFETY INSTRUCTIONS

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 instrument or to
other properties.

DANGER High Voltage

Attention Refer to the Manual

Protective Conductor Terminal

Frame or Chassis Terminal
Earth (ground) Terminal

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.

5

GPT-10000 Series User Manual

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.

General
Guideline

CAUTION

 Do not place any heavy object on the

instrument.

 Avoid severe impact or rough handling that

leads 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 the cooling fan opening.
 Do not disassemble the GPT-10000 unless you

are qualified.

Position
Guideline

WARNING

 The rear position of the GPT-10000 should be

placed in an area with easy accessible for power
disconnection, that is, unplugging the power
cord with ease.

 Keep away from the device under test which

connects with the GPT-10000 when test is
underway. In addition, while test is ongoing,
never touch the device under test, the GPT­10000 as well as other relevant units.

 Any inappropriate manner that is unspecified

by the manufacturer may result in irreversible
harms or impaired protection by the GPT-10000.

Safety Guidelines

6

SAFETY INSTRUCTIONS

(Measurement categories) EN 61010-1:2010 specifies the
measurement categories and their requirements as follows. The
GPT-10000 does not fall under category II, III or 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.

Power Supply

WARNING

 AC Input voltage range:

AC 100V – 240V ± 10%

 Frequency: 50Hz/60Hz
 To avoid electrical shock connect the protective

grounding conductor of the AC power cord to
an earth ground.

Cleaning the
GPT-10000

 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)

 Relative Humidity: ≤ 70% (no condensation)
 Altitude: < 2000m
 Temperature: 0˚C~40˚C

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GPT-10000 Series User Manual

(Pollution Degree) EN 61010-1:2010 specifies the pollution degrees
and their requirements as follows. The GPT-10000 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: -10°C to 70°C
 Relative Humidity: ≤ 85% (no condensation)

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.

8

GETTING STARTED

GPT-12000 Series Overview ............................................ 10

Series lineup ..............................................................................................10

Lineup Overview......................................................................................11

Main Features ...........................................................................................11

Accessories ................................................................................................12

Package Contents .....................................................................................13

Front Panel Overview ..................................................... 14

GPT-12001/12002/12003/12004 ............................................................14

Rear Panel Overview ...................................................... 18

GPT-12001/12002/12003/12004 ............................................................18

Set Up ........................................................................... 21

Tilting the Stand .......................................................................................21

Line Voltage Connection and Power Up ..............................................22

Installing the Optional GPIB Card .........................................................23

Workplace Precautions ............................................................................24

Operating Precautions .............................................................................25

Basic Safety Checks ..................................................................................27

GETTING STARTED

This chapter describes the safety analyzer in a
nutshell, including its main features and front /
rear panel introduction. After going through the
overview, please read the safety considerations in
the Set Up chapter.

9

GPT-10000 Series User Manual

GPT-12000 Series Overview

Series lineup

The GPT-12000 Series Safety Analyzers are AC/DC withstanding
voltage, insulation resistance, ground bond and continuity safety
analyzers.

The GPT-12001 is AC withstanding voltage and continuity tester,
the GPT-12002 is AC/DC withstanding voltage and continuity
tester and the GPT-12003 is AC/DC withstanding voltage,
insulation resistance and continuity tester. The GPT-12004 includes
all the test functions of the previous models, plus the ground bond
testing. Also, for the all the models, the testing terminals are also
mirrored on the rear panel for added safety and for more
permanent safety testing environments.

The GPT-12000 Series can store up to 100 manual tests, as well as
run up to 10 manual tests sequentially as an automatic test,
allowing the safety analyzers to accommodate any number of
safety standards, including IEC, EN, UL, CSA, GB, JIS and others.

Note: Throughout this user manual, the terms ACW, DCW, IR, GB
and CONT refer to AC Withstanding, DC Withstanding, Insulation
Resistance, Ground Bond and Continuity testing, respectively.

10

GETTING STARTED

Model name

ACW

DCW

IR

GB

CONT

GPT-12001

  GPT-12002





 GPT-12003

   

GPT-12004

    

Performance

 ACW: 5kVAC
 DCW: 6kVDC
 IR: 50V~1200V (50V steps)*
 GB: 3A~30A
 CONT: 100mA

Features

 Ramp up time control
 Ramp down time control
 Safety discharge
 100 test conditions (MANU mode)
 100 automatic tests (AUTO mode)
 Over temperature, voltage and current

protection

 Pass, Fail, Test, High Voltage and Ready

indicators

 PWM output (90% efficiency, increased

reliability)

 Interlock (configurable)
 Rear panel output

Lineup Overview

Main Features

11

Interface

 Remote control start/stop interface terminal
 RS232/USB interface for programming
 Optional GPIB interface for programming
 Signal I/O port for pass/fail/test monitoring

and start/stop control/interlock

Accessories

Standard
Accessories

Part number

Description
GHT-115x1

Te st lead

Region dependent

Power cord

GTL-215x1

GB test lead

(GPT-12004 only)

GHT-119

Remote terminal cable

N/A

Interlock key

Optional
Accessories

Part number

Description
GHT-205

High Voltage Test Probe

GHT-113

High Voltage Test Pistol

GTL-232

RS232C cable

GTL-248

GPIB cable

GTL-246

USB cable (A to B type)

Options

Part number

Description

Opt.01 GPIB Interface

GPIB module

GPT-10000 Series User Manual

12

GETTING STARTED

Opening the box

Contents
(single unit)

 GPT-12000 unit
 Quick Start Guide
 User manual CD
 CTC (Calibration

Traceable Certificate)

 Power cord x1 (region

dependent)

 GHT-115 test leads x1
 GTL-215 GB test leads

x1 (GPT-12004)

 GHT-119 Remote

terminal cable

 Interlock key

Note

Keep the packaging, including the box, polystyrene
foam and plastic envelopes should the need arise
to return the unit to GW Instek.

Package Contents

Check the contents before using the GPT-12000 series.

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GPT-10000 Series User Manual

1

2

3

4 5

6

7

8

9

0

A

B

C

D

E

F

G

Item

Description

1

STOP Button

2

START Button

3

POWER Switch

4

Test Function Keys (Green Zone)

5

Display

6

Mode Keys (AUTO, MANUAL, SYSTEM in Red Zone)

7

Soft Keys (Blue Zone)

8

USB A-Type Host Port

9

PASS/FAIL Indicators

0

REMOTE Terminal

A

Scroll Wheel

B

HIGH VOLTAGE Indicator

C

HIGH VOLTAGE Output Terminal

D

SENSE L & RETURN Terminal

E

SENSE H & Output Terminal

F

SOURCE L (GPT-12004 only)

G

SOURCE H (GPT-12004 only)

Front Panel Overview

GPT-12001/12002/12003/12004

14

GETTING STARTED

STOP button

The STOP button is used to
stop/cancel tests. The STOP button
will also put the safety analyzer in the
READY status to begin testing.

START button

The START button is used to start tests.
The START button can be used to start
tests when the tester is in the READY
status. Pressing the START button will
put the tester in the TEST status.

POWER switch

Turns the power on. The safety
analyzer will always start up with the
last test setting from when the
instrument was last powered down.

Test Function
Keys

The keys indicate the 5 testing functions including
ACW, DCW, IR, GB and CONT. Pressing one of
the keys enters the function settings.

Display

7” Color TFT LCD display in 800 X 480 resolution

AUTO button

Press to enter the AUTO test mode.

MANUAL button

Press to enter the MANUAL test mode.

SYSTEM button

Press to enter the SYSTEM mode.

Soft Keys

The Soft keys correspond to the menu keys directly
above on the main display.

USB Host Port

It can connect with USB flash drive
for data storage or barcode scanner
for convenient tests.

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GPT-10000 Series User Manual

Pass/Fail
indicators

The PASS and FAIL indicators
light up upon a PASS or FAIL test
result at the end of a manual test
or automatic test.

REMOTE
terminal

The REMOTE terminal is used to
connect to a remote controller.

Scroll wheel

The scroll wheel is used to edit
parameter values.

HIGH VOLTAGE
indicator

The HIGH VOLTAGE indicator
will light up red when an output
terminal is active. Only after the
test has finished or stopped will
the indicator turn off.

HIGH VOLTAGE
output terminal

The HIGH VOLTAGE terminal
output is used for outputting the
testing voltage in ACW, DCW and
IR tests. The terminal is recessed
for safety. This terminal is used in
conjunction with the RETURN
terminal.

WARNING

USE EXTREME CAUTION.
Do not touch the HIGH VOLTAGE terminal
during testing.

RETURN
terminal

The RETURN terminal is used
for ACW, DCW, IR and CONT
tests.

16

GETTING STARTED

OUTPUT and
RETURN
terminals

All models

The OUTPUT terminal (red)
and RETURN terminal (black)
are used for CONT
(Continuity) test.

SENSE H/L and
SOURCE H/L
terminals

GPT-12004 only

The SENSE H, SENSE L,
SOURCE H and SOURCE L,
terminals are used for GB
(Ground Bond) test.

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GPT-10000 Series User Manual

1

3

7 8 9 A

B

C

D

2

4

5

6

E

Item

Description

1

HIGH VOLTAGE Output Terminal

2

HIGH VOLTAGE Indicator

3

SENSE H & Output Terminal

4

SENSE L & RETURN Terminal

5

SOURCE H (GPT-12004 only)

6

SOURCE L (GPT-12004 only)

7

Fan 8 RS-232 Port

9

USB B-Type Interface Port

A

Signal I/O Port

B

GPIB Port (Optional)

C

GND

D

AC Mains Input (Power Cord Socket)

E

HIGH VOLTAGE pilot lamp

Rear Panel Overview

GPT-12001/12002/12003/12004

18

GETTING STARTED

SIGNAL I/O port

The SIGNAL I/O port is used to
monitor the tester status (PASS,
FAIL, TEST) and input (START/
STOP signals). It is also used with
the Interlock key.

USB B-Type port

The USB B-Type port is used for
remote control.

RS232 interface
port

The RS-232 port is used for remote
control and firmware updates.

Fan/Fan Vents

Exhaust fan. Allow enough room
for the fan to vent. Do not block the
fan openings.

GND

Connect the GND (ground)
terminal to the earth ground.

AC Mains Input

AC Mains Input for Power Cord
Socket: 100 – 240 VAC ±10%.

The fuse holder contains the AC
mains fuse. For fuse replacement
details, see page 45.

Optional GPIB
port

Optional GPIB interface for remote
control.

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GPT-10000 Series User Manual

HIGH VOLTAGE
output terminal

The HIGH VOLTAGE
terminal output is used for
outputting the testing voltage
in ACW, DCW and IR tests.
The terminal is recessed for
safety and used in conjunction
with the RETURN terminal.

WARNING

USE EXTREME CAUTION. Do not touch the
HIGH VOLTAGE terminal during testing.

HIGH
VOLTAGE pilot
lamp

The HIGH VOLTAGE pilot lamp will
light up red when an output terminal is
active. Only after the test has finished
or stopped will the lamp turn off.

RETURN
terminal

The RETURN terminal is
used for ACW, DCW, IR and
CONT tests.

OUTPUT and
RETURN
terminals

All models

The OUTPUT terminal (red)
and RETURN terminal
(black) are used for CONT
(Continuity) test.

SENSE H/L and
SOURCE H/L
terminals

GPT-12004 only

The SENSE H, SENSE L,
SOURCE H and SOURCE L,
terminals are used for GB
(Ground Bond) test.

20

GETTING STARTED

Horizontal
position

Place the unit on a flat surface horizontally.

Tilt stand
position

Gently pull the 2 stands out from the bottom and
the unit will be placed in the tilt stand position.

Set Up

Tilting the Stand

21

GPT-10000 Series User Manual

Background

The GPT-12000 accepts line voltages of
100 - 240V at 50Hz or 60Hz.

Steps

1. Connect the power cord to

the AC Mains Input socket
on the rear panel.

2. If the power cord does not

have an earth ground,
ensure the ground
terminal is connected to an
earth ground.

Warning

Ensure the power cord is connected to an earth
ground. Failure could be harmful to the operator
and instrument.

3. Press the Power button.

4. When the unit is powered up, the display will

show the last time parameters in either MANU
or AUTO test mode as shown below.

Line Voltage Connection and Power Up

22

GETTING STARTED

Background

The optional GPIB is a user-installable option.
Follow the instructions below to install the
GPIB card.

WARNING

Before installing optional GPIB card ensure the GPT­12000 is turned off and disconnected from power.

Steps

1. Remove screws from the rear panel cover plate.

2. Insert the GPIB card into the opening of rear

panel. Push the card gently until it is fully
inserted followed by fastening the screws.

GPIB Card

Installing the Optional GPIB Card

23

GPT-10000 Series User Manual

Background

The GPT-12000 is a high voltage instrument
that outputs dangerous voltages. The following
section describes precautions and procedures
that must be followed to ensure a safe work
environment.

WARNING

The GPT-12000 generates voltages in excess of
5kVAC or 6kVDC. Follow all safety precautions,
warnings and directions given in the following
section when using the instrument.

1. Only technically qualified personnel should be

allowed to operate the safety analyzer.

2. The operating workplace must be fully isolated,

especially when the instrument is in operation.
The instrument should be clearly labeled with
appropriate warning signage.

3. The operator should not wear any conductive

materials, jewelry, badges, or other items, such
wrist watches.

4. The operator should wear insulation gloves for

high voltage protection.

5. Ensure the earth ground of the line voltage is

properly grounded.

6. Ensure any devices that are adversely affected

by magnetic fields are not placed near the
tester.

Workplace Precautions

24

GETTING STARTED

Background

The GPT-12000 is a high voltage instrument
that outputs dangerous voltages. The following
section describes precautions and procedures
that must be followed to ensure that the tester
is operated in a safe manner.

WARNING

The GPT-12000 generates voltages of up to 5kVAC
or 6kVDC. Follow all safety precautions, warnings
and directions given in the following section when
using the instrument.

1. Never touch the safety analyzer, lead wires,

terminals, probes and other connected
equipment when the tester is testing.

2. Do not turn the safety analyzer on and off

quickly or repeatedly. When turning the power
off, please allow a few moments before turning
the power back on. This will allow the
protection circuits to properly initialize.

Do not turn the power off when a test is
running, unless in an emergency.

3. Only use those test leads supplied with the

instrument. Leads with inappropriate gauges
can be dangerous to both the operator and the
instrument.
For GB testing, never use the Sense leads on the
SOURCE terminals.

4. Do not short the HIGH VOLTAGE terminal

with ground. Doing so could charge the chassis
to dangerously high voltages.

Operating Precautions

25

GPT-10000 Series User Manual

5. Ensure the earth ground of the line voltage is

properly grounded.

6. Only connect the test leads to the HIGH

VOLTAGE/SOURCE H/SENSE H terminals
before the start of a test. Keep the test leads
disconnected at all other times.

7. Always press the STOP button when pausing

testing.

8. Do not leave the safety analyzer unattended.

Always turn the power off when leaving the
testing area.

9. When remotely controlling the safety analyzer,

ensure adequate safety measures are in place to
prevent:

 Inadvertent output of the test voltage.

 Accidental contact with the instrument during

testing. Ensure that the instrument and DUT are
fully isolated when the instrument is remotely
controlled.

10. Ensure an adequate discharge time for the

DUT.

When DCW or IR tests are performed, the DUT,
test leads and probes become highly charged.
The GPT-12000 has discharge circuitry to
discharge the DUT after each test. The time
required for a DUT to discharge depends on the
DUT and test voltage.

Never disconnect the safety analyzer before a
discharge is completed.

26

GETTING STARTED

Background

The GPT-12000 is a high voltage device and as
such, daily safety checks should be made to
ensure safe operation.

1. Ensure all test leads are not broken and are free

from defects such as cracks or splitting.

2. Ensure the safety analyzer is always connected

to an earth ground.

3. Test the safety analyzer operation with a low

voltage/current output:
Ensure the safety analyzer generates a
FAIL judgment when the HIGH
VOLTAGE and RETURN terminals are
shorted (using the lowest voltage/current as
the testing parameters).

WARNING

Do not use high voltages/currents when the HIGH
VOLTAGE and RETURN terminals are shorted. It
may result in damage to the instrument.

Basic Safety Checks

27

GPT-10000 Series User Manual

Menu Tree ...................................................................... 30

Menu Tree Overview ............................................................................... 31

Test Lead Connection ...................................................... 35

ACW, DCW, IR Connection ................................................................... 35

GB Connection .......................................................................................... 36

CONT Connection.................................................................................... 37

Manual Tests .................................................................. 38

Setting the Test Function ......................................................................... 39

Choose/Recall a Manual Test Number ................................................. 40

Creating a MANU Test File Name ......................................................... 41

Setting the Upper and Lower Limits ..................................................... 42

Setting the Test Time ............................................................................... 44

Setting the Ramp Up Time ...................................................................... 46

Setting the Ramp Down Time ................................................................ 48

Setting the Test Voltage or Test Current ............................................... 50

Setting the Test Frequency ...................................................................... 52

Setting a Reference Value ........................................................................ 53

Setting an Initial Voltage ......................................................................... 54

Setting the Wait Time .............................................................................. 56

Setting the ARC Function........................................................................ 58

Setting MAX HOLD ................................................................................. 61

Setting PASS HOLD ................................................................................. 62

Setting IR Mode ........................................................................................ 63

Setting GND OFFSET .............................................................................. 65

Setting GB Contact ................................................................................... 67

Zero Check for the Test Leads ................................................................ 69

Setting the Grounding Mode .................................................................. 72

Setting Contact Check.............................................................................. 76

Running a MANU Test ............................................................................ 78

OPERATION

28

OPERATION

PASS / FAIL MANU Test .......................................................................83

Special MANU Test Mode (000) ...................................... 89

Sweep Function .............................................................. 91

Automatic Tests ............................................................. 94

Choose/Recall an AUTO Test ................................................................95

Creating an AUTO Test File Name ........................................................96

Adding a Step to the AUTO Test ...........................................................97

Continuous AUTO Tests .........................................................................99

AUTO Test Page Editing .......................................................................101

Running an Automatic Test ..................................................................106

Automatic Test Results ..........................................................................112

29

GPT-10000 Series User Manual

Menu Tree

This section describes the overall structure of the operation statuses
and modes for the GPT-12000 safety analyzers. The testers have
two main testing modes (MANU, AUTO), one system mode
(SYSTEM) and 5 main operation statuses (READY, TEST, PASS,
FAIL and STOP).

30

OPERATION

MANU Mode

MANU mode is used to create and/or execute a
single test. Only under MANU mode can
parameters be edited for each manual test.

MANU
mode

AUTO Mode

AUTO mode indicates that the tester is
automatic, which consists of a sequential AUTO
test of up to 10 MANU steps. Also, several
groups of AUTO tests can be further
interconnected for an advanced AUTO test.

AUTO
mode

Menu Tree Overview

31

GPT-10000 Series User Manual

SYSTEM Mode

System mode covers the Display Set, Buzzer,
Interface, Control, System Time, Data Initialize,
Information, Statistics and USB Disk settings.
These settings are system-wide and applied to
both MANU and AUTO tests.

SYSTEM
mode

READY Status
(Yellow Color)

When the tester is in READY status of MANU
or AUTO test, it is ready to begin testing.
Pressing the START button will begin testing
and put the tester into TEST status. Pressing the
AUTO key will change from MANU – READY
status to AUTO – READY status and vice versa.

READY
status in
MANU
test

READY
status in
AUTO
test

32

OPERATION

TEST Status
(Orange Color)

TEST status is active when a MANU test or
AUTO test is running. Pressing STOP will
cancel the MANU test or the remaining steps in
an AUTO test instantly. The TEST status in
AUTO test is identical with that of MANU test.

TEST status
in MANU
test

PASS Status
(Green Color)

When a MANU test result is within the range of
HI and LOW sets, the PASS status is shown on
display. For AUTO test, the PASS status only
shows when all the affiliated test steps are passed.

PASS status
in MANU
test

PASS status
in AUTO
test

33

GPT-10000 Series User Manual

FAIL Status
(RED Color)

When a MANU test result is beyond the range
of HI and LOW sets, the FAIL status is shown
on display. For AUTO test, the FAIL status is
shown when any of the test steps fails, even
only one of them.

FAIL status
in MANU
test

FAIL status
in AUTO
test

STOP Status
(Red Color)

STOP status is shown when an AUTO test did
not finish running and has been stopped by user.
Pressing STOP will return the tester to READY
status. STOP status is not shown in MANU test
as it returns to READY status directly after user
pressed STOP button in MANU test.

STOP status
in AUTO
test

34

OPERATION

Background

ACW, DCW and IR tests use the HIGH
VOLTAGE terminal and RETURN terminal
with the GHT-115 test leads.

ACW, DCW, IR
Connection

High Voltage terminal

DUT

GPT-12000

Return terminal

Steps

1. Turn the power off on the safety analyzer.

2. Connect the high voltage test lead (red) to the

HIGH VOLTAGE terminal and screw firmly
into place.

3. Connect the return test lead (white) into the

RETURN terminal and screw the protector bar
into place, as shown below.

HIGH VOLTAGE

Terminal

RETURN
Terminal

Test Lead Connection

This section describes how to connect the GPT-12000 to a DUT for
withstanding, insulation resistance, ground bond as well as
continuity testing.

ACW, DCW, IR Connection

35

GB Connection

Background

GB tests use the SENSE H/L and SOURCE H/L
terminals with the GTL-215 test leads.

GB Connection

Source H

DUT

GPT-12000

Sense L

Sense H

Source L

Steps

1. Turn the power off on the safety analyzer.

2. Connect the Sense H lead to the SENSE H

terminal.

3. Connect the Sense L lead to the SENSE L

terminal.

4. Connect the Source H lead to the SOURCE H

terminal.

5. Connect the Source L lead to the SOURCE L

terminal.

Sense H lead Sense L lead

Source L leadSource H lead

GPT-10000 Series User Manual

36

OPERATION

Background

CONT tests use the OUTPUT and RETURN
terminals with the GTL-115 test leads.

CONT
Connection

DUT

GPT-12000

Return terminal

Output

Steps

1. Turn the power off on the safety analyzer.

2. Connect the OUTPUT test lead (red) to the

OUTPUT terminal.

3. Connect the RETURN test lead (black) into the

RETURN terminal and screw the protector bar
into place, as shown below.

OUTPUT
Terminal

RETURN
Terminal

CONT Connection

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GPT-10000 Series User Manual

Manual Tests

This section describes how to create, edit and run a single ACW,
DCW, IR, GB and CONT manual tests. Each Manual setting
described in this chapter only applies to the selected manual test – no
other manual tests are affected.

Each manual test can be stored/recalled to/from one of 100
memory locations. Each stored manual test can be used as a test
step when creating an AUTO test (page 91).

 Setting the Test Function → from page 39.
 Choose/Recall a Manual Test Number → from page 40.
 Creating a MANU Test File Name → from page 41.
 Setting the Upper and Lower Limits → from page 42.
 Setting the Test Time → from page 44.
 Setting the Ramp Up Time → from page 46.
 Setting the Ramp Down Time → from page 48.
 Setting the Test Voltage or Test Current → from page 50.
 Setting the Test Frequency → from page 52.
 Setting a Reference Value → from page 53.
 Setting an Initial Voltage → from page 54.
 Setting the Wait Time → from page 56.
 Setting the ARC Function → from page 58.
 Setting MAX HOLD → from page 61.
 Setting PASS HOLD → from page 62.
 Setting IR Mode → from page 63.
 Setting GND OFFSET → from page 65.
 Setting GB Contact → from page 67.
 Zero Check for the Test Leads → from page 69.
 Setting the Grounding Mode → from page 72.
 Setting Contact Check → from page 76.
 Running a MANU Test → from page 78.
 PASS / FAIL MANU Test → from page 83.
 Special MANU Test Mode (000) → from page 89.
 Sweep Function → from page 91.

38

OPERATION

Background

There are five test functions, AC Withstand, DC
Withstand, Insulation Resistance, Ground Bond
and Continuity tests.

Steps

1. If the tester is in AUTO or SYSTEM

mode, press the MANUAL key to
put the tester into MANU mode.

2. To choose the test function, press the ACW,

DCW, IR, GB or CONT key on the front panel.

3. The key of selected test function is lit, and the

test function selected is shown on the upper-left
corner of the display.

Selected Test Function

Setting the Test Function

39

GPT-10000 Series User Manual

Background

ACW, DCW, IR, GB and CONT tests can only
be created and edited in the MANU mode.
MANU number 001 to 100 can be saved and
thus be loaded when editing/creating a MANU
test or AUTO test. MANU number 000 is a
special mode. See page 89 for details on the
special mode.

Steps

1. If the tester is in AUTO or SYSTEM

mode, simply press the MANUAL
key to switch to MANU mode.

2. Use the scroll wheel to choose the

MANU number.

MANU #

001~100
(MANU# 000 is a special mode)

MANU number cursor

Note

Manual number can only be selected

or recalled when the “READY” status
shows on the screen. If the “FAIL”

status appears, it is required to press
STOP key first before selecting or
recalling procedure.

Choose/Recall a Manual Test Number

40

OPERATION

Background

Each manual test can have a user-defined name
(default: MANU_NAME) up to 10 characters
long. See the available list of characters below.

Character List

0 1 2 3 4 5 6 7 8 9

W X Y ZM VO P RQ T USNLA B C D E F G H I J K

w x y zm vo p rq t usnla b c d e f g h i j k

_

Steps

1. Press the UP / DOWN arrow soft-

keys to bring the cursor to the
MANU_NAME (default name) field.
The characters table will appear in
the right hand accordingly.

MANU NAME cursor Characters Table

2. Use the scroll wheel to scroll

through the available characters.

3. Press the LEFT / RIGHT arrow soft-

keys to move the cursor to the next
character.

4. The MANU test file name is set when the

cursor is moved to another setting.

Creating a MANU Test File Name

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GPT-10000 Series User Manual

Background

There is both a LOW and HI judgment setting.
When the measured value is below the LOW
SET setting, the test will be judged as FAIL.
When the value exceeds the HI SET setting the
test will be judged as FAIL. Any measurement
between the LOW SET and HI SET setting is
judged as PASS. The LOW SET limit cannot be
made greater than the HI SET limit.

Steps

1. Press the UP / DOWN arrow soft-

keys to bring the cursor to the HI
SET setting.

HI SET cursor

2. Use the scroll wheel to set the HI

SET limit.

ACW (HI)
DCW (HI)
IR (HI)
GB (HI)

CONT (HI)

0.001mA~042.0mA

0.001mA~011.0mA

000.2MΩ~50.00GΩ

000.1mΩ ~ 650.0mΩ

00.01Ω ~ 90.00Ω

Setting the Upper and Lower Limits

42

OPERATION

3. Press the UP / DOWN arrow soft-

keys to bring the cursor to the
LOW SET setting.

LOW SET cursor

4. Use the scroll wheel to set the LO

SET limit.

ACW (LOW)
DCW (LOW)
IR (LOW)
GB (LOW)

CONT (LOW)

0.000mA~041.99mA

0.000mA~010.9mA

000.1MΩ~49.99GΩ

000.0mΩ ~ 649.9mΩ

00.00Ω ~ 89.99Ω

Note

*Please note that the resolution of the measured
value depends on the resolution of HI SET setting.

Note

The LO SET setting is limited by the HI SET
setting. The LO SET limit cannot be greater than
the HI SET limit.

When setting the current, be aware that a
maximum of 200VA can be set for ACW and 50W
for DCW, respectively.

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GPT-10000 Series User Manual

Background

This setting is used to set the test time for a test.
The test time determines how long the test
voltage or current is applied to the DUT. This
test time does not include RAMP UP time or
RAMP DOWN time (note: GB and CONT do
not have RAMP UP or RAMP DOWN). The test
time can be set from 0.3 seconds to 999.9
seconds for ACW, DCW, IR, GB and CONT,
with a resolution of 0.1 seconds for all modes.
Also, the test time can be turned off when using
the ACW or DCW test functions.

Each test has a RAMP UP and RAMP DOWN
time (except GB and CONT), respectively. Refer
to page 46 & 48 for more details.

Output Voltage
Timing Chart
(Resistive load)

Test V

time

TEST TIME

RAMP UP

RAMP
DOWN

Initial V

(Adjustable)

Steps

1. Press the UP / DOWN arrow soft-

keys to bring the cursor to the
TEST TIME setting.

TEST TIME cursor

Setting the Test Time

44

OPERATION

2. Use the scroll wheel to set the

TEST TIMER value.

ACW
DCW
IR
GB

CONT

000.3s~999.9s

000.3s~999.9s

000.3s~999.9s

000.3s~999.9s

000.3s~999.9s

Note

With the ACW test function, when the test current
is beyond 30mA, the Ramp Up Time + Test Time
cannot exceed 240 seconds. At this current level,
the tester also needs to pause after a test for a
time equal to or greater than the output time.

Turn Off Test
Time

When in either ACW or DCW test, the TEST
TIME can be turned off, which means the test
without test time will last infinitely until FAIL
judgment occurs.

Identical with the regular setting
for TEST TIME, turn off the timer
by using the scroll wheel to set
OFF for TEST TIME value.

TEST TIME OFF

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GPT-10000 Series User Manual

Background

The Ramp Up time is the total time taken for
the tester to reach the test voltage level. The
Ramp Up time starts with a start voltage of 50
volts. The Ramp Up time can be set from 000.1
to 999.9 seconds. The Ramp Up time is only
applicable for ACW, DCW and IR tests.

Output Voltage
Timing Chart
(Resistive load)

Test V

time

TEST TIME

RAMP UP

RAMP
DOWN

Initial V

(Adjustable)

Steps

1. Press the UP / DOWN arrow soft-

keys to bring the cursor to the
RAMP TIME setting.

RAMP TIME cursor

2. Use the scroll wheel to set the

RAMP TIME value.

ACW
DCW
IR

000.1s~999.9s

000.1s~999.9s

000.1s~999.9s

Setting the Ramp Up Time

46

OPERATION

Ramp Time
Duration
Indicator

After pressing START to begin a test with set
RAMP TIME, a section at the lower right corner
of display shows the counting duration of
RAMP TIME, which will run to the set value
followed by the test time. See the screenshot
shown below.

RAMP TIME duration indicator

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GPT-10000 Series User Manual

Background

The Ramp Down time is the time taken for the
DUT to discharge the test voltage level. The
Ramp Down time can be set from 000.0 to 999.9
seconds. The Ramp DOWN time is only
applicable for ACW, DCW and IR tests.

Output Voltage
Timing Chart
(Resistive load)

Test V

time

TEST TIME

RAMP UP

RAMP
DOWN

Initial V

(Adjustable)

Steps

1. Press the PAGE soft-key to move to

the 2/3 page where RAMP DOWN
setting appears for ACW and DCW.

As for IR test, the RAMP DOWN
setting shows in the 2/2 page.

2. Press the UP / DOWN arrow soft-

keys to bring the cursor to the
RAMP DOWN setting.

RAMP DOWN cursor

Setting the Ramp Down Time

48

OPERATION

3. Use the scroll wheel to set the

RAMP DOWN value.

ACW
DCW
IR

000.0s~999.9s

000.0s~999.9s

000.0s~999.9s

Ramp Down
Duration
Indicator

After the set TEST TIME is fully completed, a
section at the lower right corner of display
shows the counting duration of RAMP DOWN,
which will run to the set value by user. See the
screenshot shown below.

RAMP DOWN duration indicator

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GPT-10000 Series User Manual

Background

The test voltage can be set from 0.050kV to 5kV
for ACW, 0.050kV to 6kV for DCW and 0.050 to
1kV for IR (50V steps*). For GB tests the test
current can be set from 3A to 30A. As for
CONT test, the test current is fixedly set at the
default value of 100mA.

Steps

1. Press the UP / DOWN arrow soft-

keys to bring the cursor to the
voltage or ampere setting
depending on selected test
function.

Test Voltage / Current cursor region

2. Use the scroll wheel to set the test

voltage or ampere level.

ACW
DCW
IR
GB
CONT

0.050kV ~ 5kV 1

0.050kV ~ 6kV 2

0.05kV ~ 1kV (50V steps)

3.00A ~ 33.00A
100mA 3

Setting the Test Voltage or Test Current

50

OPERATION

1

At least 0.3 seconds is needed to reach a set

voltage of 50V/10mA.

2

At least 0.3 seconds is needed to reach a set

voltage of 50V/2mA.

3

Test current for CONT is fixed at 100mA

Note

When setting the current, be aware that a
maximum of 200VA can be set for ACW and 50W
for DCW, respectively.

The ground bond voltage (GBV) is calculated as
the HI SET limit x Test Current.

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GPT-10000 Series User Manual

Background

A test frequency of 60Hz or 50Hz can be set,
regardless of the input line voltage. The test
frequency setting only applies to ACW and GB
tests.

Note

The test frequency can only be set for ACW or GB
tests.

Steps

1. Press the PAGE soft-key to move

to the 2/3 page where FREQ
setting appears for ACW.

As for GB test, the FREQ setting
shows in the 1/2 page directly.

2. Press the UP / DOWN arrow soft-

keys to bring the cursor to the
FREQ setting.

FREQ setting cursor

3. Use the scroll wheel to set the test

frequency.

ACW, GB

50Hz, 60Hz

Setting the Test Frequency

52

OPERATION

Background

The REF# acts as an offset. The REF VALUE is
subtracted from the measured current (ACW,
DCW) or measured resistance (IR, GB, CONT).

Steps

1. Press the PAGE soft-key to move to

the 3/3 page where REF VALUE
setting appears for ACW and DCW.

As for IR and GB, the REF VALUE
setting shows in the 2/2 page.

The REF VALUE setting appears in
the 1/1 page directly for CONT.

2. Press the UP / DOWN arrow soft-

keys to bring the cursor to the REF
VALUE setting.

REF VALUE cursor

3. Use the scroll wheel to set the REF

value.

Setting a Reference Value

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GPT-10000 Series User Manual

ACW

DCW

IR

GB

CONT

0.000mA~HI SET current-0.1mA
*HI SET + REF value ≤ 42.00 mA

0.000mA~HI SET current-0.1mA
*HI SET + REF value ≤ 11.00 mA

000.0MΩ~50.00GΩ

000.0mΩ~650.0mΩ

*ISET x (HI SET + REF value) is no

greater than 7.2V

00.00Ω~90.00Ω
*ISET(100mA) x (HI SET + REF value)

is no greater than 9V

Note

For IR test, a reference value of tester can be
automatically created via the GND OFFSET
function. See page 65 for details.

For GB and CONT tests, a reference value of test
lead can be automatically created via the ZERO
CHECK function. See page 69 for details.

Background

In essence, the test voltage for both ACW and
DCW will gradually and linearly rise up, from
zero, to the target set voltage in accord with the
set RAMP TIME ahead of the TEST TIME.

Nevertheless, under certain circumstances, user
may have preferences on the percentage of
starting test voltage. Therefore, the INIT
VOLTAGE provides another alternative for
different applications on user side.

It is easy to set a preferred percentage of the
test voltage in the INIT VOLTAGE setting and
the starting test voltage will commence from

Setting an Initial Voltage

54

OPERATION

the value corresponding to the set percentage
relative to the target test voltage.

Note

INIT VOLTAGE setting is only applicable to both
ACW and DCW tests.

Steps

1. Press the PAGE soft-key to move to

the 3/3 page where the INIT
VOLTAGE setting appears for
ACW and DCW.

2. Press the UP / DOWN arrow soft-

keys to bring the cursor to the INIT
VOLTAGE setting.

INIT VOLTAGE cursor

3. Use the scroll wheel to set the

percentage of INIT VOLTAGE.

INIT
VOLTAGE

000% ~ 099%

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GPT-10000 Series User Manual

Background

The Wait Time refers to the pending time
before FAIL judgment appears. By default,
FAIL judgment appears when Test Time has
reached 0.3 second at the earliest manner.
However, when user sets 1.0 second for Wait
Time on the tester with 0.5 second of Ramp Up
time and 1.0 second of Test Time, the FAIL
judgment will be shown when Test Time has
reached 0.5 second. In short, Wait Time is the
pending duration which dominates the priority
over both Ramp UP time and Test Time in
terms of timing of FAIL judgment.

The WAIT TIME is only applicable for ACW,
DCW and IR tests.

Steps

1. Press the PAGE soft-key to move to

the 2/3 page where WAIT TIME
setting appears for ACW and DCW.

As for IR test, the WAIT TIME
setting shows in the 1/2 page.

2. Press the UP / DOWN arrow soft-

keys to bring the cursor to the
WAIT TIME setting.

Setting the Wait Time

56

OPERATION

WAIT TIME cursor

Wait Time
Indicator

While the WAIT TIME is set, the indicator of WAIT
TIME will be shown on the display in the set
duration during a test progress for clear
identification for user.

WAIT TIME indicator

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GPT-10000 Series User Manual

Background

ARC detection, otherwise known as flashover
detection, detects fast voltage or current
transients that are not normally detected. Arcing
is usually an indicator of poor withstanding
insulation, electrode gaps or other insulating
problems that cause temporary spikes in current
or voltage during ACW and DCW testing.

There are three ARC detection settings: OFF,
ON & CONT, ON & STOP.
The ON & CONT setting will detect arcs over
the ARC current level and continue the test, the
ON & STOP setting will stop the test when an
arc is detected.

ARC mode settings only apply to both ACW
and DCW tests.

Steps

1. Press the UP / DOWN arrow soft-

keys to bring the cursor to the ARC
FUNC setting.

ARC FUNC cursor

2. Use the scroll wheel to set the ARC

modes setting.

Setting the ARC Function

58

OPERATION

ARC MODES:

OFF
ON & CONT
ON & STOP

3. If the ARC MODE was set to either

ON & CONT, or ON & STOP, the
ARC current level can be edited.
Press the DOWN arrow soft-key to
bring the cursor to the ARC SET
setting field.

ARC SET cursor

4. Use the scroll wheel to edit the

ARC SET level.

ACW
DCW

1.000mA~080.0mA

1.000mA~020.0mA

5. If the ARC MODE was set to either

ON & CONT, or ON & STOP, the
ARC speed, which indicates the
threshold for width of detected
ARC, can be edited. Press the PAGE
soft-key to move to the 2/3 page
where ARC SPEED setting appears
for ACW and DCW.

59

GPT-10000 Series User Manual

6. Press the UP / DOWN arrow soft-

keys to bring the cursor to the ARC
SPEED setting field.

ARC SPEED cursor

7. Use the scroll wheel to select the

ARC SPEED modes.

ARC SPEED

FAST

Threshold for the
narrowest width
of detected arc,
which is the most
sensitive manner.

NORMAL

Threshold for the
general width of
detected arc.

SLOW

Threshold for the
widest width of
detected arc,
which is the
manner of high
tolerance.

60

OPERATION

Background

The MAX HOLD setting will hold the
maximum current measured in the ACW and
DCW tests or the maximum resistance
measured in the IR and GB tests.

For instance, when running an IR test with 120
seconds of test time and MAX HOLD enabled,
the highest resistance measured in the 30
seconds of the test time will be retained on
display until the next largest value. If there is
no further maximum resistance occurred, the
value measured in 30 seconds will be remained
till the end of the test of 120 seconds.

Steps

1. Press the PAGE soft-key to move to

the 2/3 page where MAX HOLD
setting appears for ACW and DCW.

As for IR and GB, the MAX HOLD
setting shows in the 2/2 page.

2. Press the UP / DOWN arrow soft-

keys to bring the cursor to the MAX
HOLD setting.

MAX HOLD cursor

Setting MAX HOLD

61

GPT-10000 Series User Manual

3. Use the scroll wheel to set MAX

HOLD.

MAX HOLD

OFF, ON

Background

The PASS HOLD setting refers to the holding
duration after PASS judgment is shown on the
display. When the PASS HOLD setting is set, a
PASS judgment is held until the set duration is
fully reached.

Note

The PASS HOLD setting only applies to MANU
tests. This setting is ignored when running
AUTO test.

Steps

1. Press the PAGE soft-key to move to

the 3/3 page where PASS HOLD
setting appears for ACW.

And it is the 2/3 page where PASS
HOLD setting appears for DCW.

As for IR and GB, the PASS HOLD
setting shows in the 2/2 page.

The PASS HOLD setting appears
in the 1/1 page directly for CONT.

2. Press the UP / DOWN arrow soft-

keys to bring the cursor to the PASS
HOLD setting.

Setting PASS HOLD

62

OPERATION

PASS HOLD cursor

3. Use the scroll wheel to set PASS

HOLD duration.

PASS HOLD

000.0s ~ 999.9s, ON

Note

 The STOP key can be pressed at any time in

the set duration of PASS HOLD to promptly
halt the set PASS HOLD duration. In short,
user can stop, if necessary, the duration of
PASS HOLD any time.

 When ON is selected, the duration of PASS

HOLD will remain indefinitely until the STOP
key is further pressed; however, the buzzer will
sound, if enabled, for 0.5 second merely.

Background

The IR MODE setting, which contains three
options, STOP ON FAIL, STOP ON PASS,
TIMER, only applies to IR test.

When IR MODE is set to STOP ON FAIL, the
tester will show the FAIL judgment, if
available, in the 0.3 second of test time at the
earliest manner, regardless of the set test time.

When set to PASS ON FAIL, the tester will

Setting IR Mode

63

GPT-10000 Series User Manual

show the PASS judgment, if available, in the 0.3
second of test time at the earliest manner,
regardless of the set test time.

The TIMER mode will run a test in a full course
completely in accordance with the set test time,
whether the final judgment is PASS or FAIL.

Note

If the DUT is under the situation of abnormal
measurement, e.g., short circuit, the FAIL
judgment of SHORT warning, though TIMER is
set, will appear in the early manner regardless
of the set test time.

Steps

1. Press the PAGE soft-key to move to

the 2/2 page where IR MODE
setting appears for IR test.

2. Press the UP / DOWN arrow soft-

keys to bring the cursor to the IR
MODE setting.

IR MODE cursor

3. Use the scroll wheel to set the IR

MODE.

IR MODE

STOP ON FAIL

STOP ON PASS

TIMER

64

OPERATION

Background

The GND OFFSET is used to determine the
offset resistance of the tester. When a GND
OFFSET is performed, the reference is
automatically set to the measured resistance.

Note

GND OFFSET setting is only applicable to IR test.

Steps

1. Press the PAGE soft-key to move to

the 2/2 page where GND OFFSET
setting appears for IR testing.

2. Press the UP / DOWN arrow soft-

keys to bring the cursor to the GND
OFFSET setting. When selecting ON,
the ZERO CHECK indicator will be
shown on the display.

GND OFFSET cursor ZERO CHECK indicator

Setting GND OFFSET

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GPT-10000 Series User Manual

3. Press the START button to perform

the GND OFFSET. The resistance
of the tester, after the GND
OFFSET has finished, will be
added into the REF VALUE field
as the display shown below.

Resistance of the tester

66

OPERATION

Background

Basically, GB test has no ramp up time and thus
starts from the set test time by user directly.
However, due to some cases where a buffer
time before test time is in fact required for GB
test, e.g., in conveyor where DUTs are tested for
GB by batches and certain buffer duration
needed for test leads or jigs connecting with
DUTs, the GB CONTACT setting practically
allows user to apply to customized scenarios
when necessary occurs.

Note

GB CONTACT setting is only applicable to GB test.

Steps

1. Press the UP / DOWN arrow soft-

keys to bring the cursor to the GB
CONTACT setting.

GB CONTACT cursor

2. Use the scroll wheel to set the

value of GB CONTACT

GB CONTACT

000.0 s ~ 999.9 s

Setting GB Contact

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GPT-10000 Series User Manual

GB CONTACT
Duration
Indicator

After every parameter including GB CONTACT is
well set, press START to begin the GB test. A
section at the lower right corner of display shows
the counting duration of GB CONTACT, which will
run to the set value followed by the test time. See
the screenshot shown below.

GB CONTACT duration indicator

68

OPERATION

Background

The Zeroing function is used to determine the
resistance of the test leads for GB and CONT
tests. When a ZERO CHECK is performed, the
reference is automatically set to the measured
resistance of the test leads.

Note

ZERO CHECK setting is only applicable to both GB
and CONT tests.

Steps

1. Short the positive and negative alligator clips as

shown below.

2. Press the PAGE soft-key to move to

the 2/2 page where ZERO CHECK
setting appears for GB testing.

As for CONT, ZERO CHECK setting
shows in the 1/1 page directly.

3. Press the UP / DOWN arrow soft-

keys to bring the cursor to the ZERO
CHECK setting. When selecting ON,
the ZERO CHECK indicator will be
shown on the display.

Zero Check for the Test Leads

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GPT-10000 Series User Manual

ZERO CHECK cursor ZERO CHECK indicator

4. Press the START button to perform

the zero check. The resistance of
the test leads, after the ZERO
CHECK has finished, will be
added into the REF VALUE field
as the display shown below.

Resistance of the test leads

Note

Remember to replace the test leads to the proper
position on the DUT before testing.

70

OPERATION

FAIL – GBI LOW

If SOURCE H/L terminals are open or poorly
connected, the FAIL – GBI LOW status will appear
on the screen. Please re-check the connection of
SOURCE H/L terminals again.

FAIL – GBI LOW status

REF VALUE = 0

Press STOP button to exit and the
resistance of test leads were not
properly added into the REF VALUE,
which shows 000.0 mΩ as shown
below. Re-check the connection of
SOURCE H/L terminals and press
START button again to proceed to the
ZERO CHECK procedure.

REF VALUE = 0

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GPT-10000 Series User Manual

Background

When GROUND MODE is set to ON, the GPT­12000 grounds the return terminal to the
ground. This mode is best for DUTs that are
grounded to an earth ground by their chassis,
fixtures or operation environment. This mode
measures the potential of the HIGH VOLTAGE
terminal with respect to earth ground. This
means that any stray capacitance/resistance
that leaks to earth ground will also be
measured. This is the safest testing mode,
though potentially not as accurate.

When GROUND MODE is set to OFF, the
return terminal is floating with respect to the
earth ground. This mode is for DUTs that are
floating and not directly connected to an earth
ground. This is more accurate than when
GROUND MODE is set to ON as any stray
capacitance/resistance that leaks to the earth
ground from the DUT side of the testing circuit
will not be measured. For this reason, this
testing mode is able to measure to a higher
resolution.

GROUND MODE = ON, DUT grounded

High Voltage terminal

Return terminal

DUT

GPT-12000

stray

resistance,

capacitance

Setting the Grounding Mode

72

OPERATION

GROUND MODE = ON, DUT floating

High Voltage terminal

DUT

GPT-12000

stray

resistance,

capacitance

Return terminal

GROUND MODE = OFF, DUT floating

High Voltage terminal

DUT

GPT-12000

stray

resistance,

capacitance

Return terminal

GPT-12000 (GB testing)

DUT

Source H

Source L

Sense H

Sense L

stray

resistance,

capacitance

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GPT-10000 Series User Manual

GROUND MODE = OFF, DUT grounded

High Voltage terminal

DUT

GPT-12000

stray

resistance,

capacitance

Return terminal

GPT-12000 (GB testing)

DUT

Source H

Source L

Sense H

Sense L

stray

resistance,

capacitance

Warning

When GROUND MODE is set to OFF, the DUT,
fixtures or connected instrumentation cannot be
grounded. This will short circuit the internal
circuitry during a test.

For ACW and DCW tests, if it is not known whether
the DUT test setup is grounded or not, always set
GROUND MODE to ON.

Only set GROUND MODE to OFF when the DUT
is floating electrically.

Steps

1. Press the PAGE soft-key to move to

the 2/3 page where GROUND
MODE setting appears for ACW
and DCW.

As for IR and GB, the GROUND
MODE setting shows in the 1/2 page.

2. Press the UP / DOWN arrow soft-

keys to bring the cursor to the
GROUND MODE setting.

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OPERATION

GROUND MODE cursor

3. Use the scroll wheel to set the

GROUND MODE.

GROUND MODE

OFF, ON

4. The GROUND MODE icon on the display

changes accordingly.

GROUND MODE ON

GROUND MODE OFF

Note

Under the IR test mode, when GROUND MODE is
ON but test time is se t < 0.5s, the error message
“TEST TIMR<0.5s” will be shown, by which user is
not able to start the IR test mode unless the test
time is reset to > 0.5s. Refer to page 44 for how to
set the test time manually.

GROUND MODE ON Error Message Prompts

0.3 s
Test Time

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GPT-10000 Series User Manual

Background

The CONTACT CHK function is used to
determine if open circuit or short circuit occurs
between the test leads and DUT under the
ACW, DCW and IR tests. Before activating this
function, it is first required to define a reference
value along with relevant thresholds, for which
refer to page 154.

Note

CONTACT CHK setting is only applicable to ACW,
DCW and IR test modes.

Steps

1. After well setting up the test leads connection

with DUT, refer to page 154 for how to define a
reference value and relevant thresholds firstly.

2. Press the PAGE soft-key to move to

the 3/3 page where CONTACT
CHK setting appears for ACW,
DCW and IR tests.

3. Press the UP / DOWN arrow soft-

keys to bring the cursor to the
CONTACT CHK and turn it ON.

CONTACT CHK ON

Setting Contact Check

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OPERATION

4. After pressing the START button,

the GPT-10000 unit will perform
the CONTACT CHK before
running a MANU test. If the
measured current is lower than the
reference value by user-defined

percentage, the “OPEN” status

appears on the screen. While the
measured current is higher than
the reference value by user-defined

percentage, the “SHORT” status

appears instead.

OPEN
Status

OPEN Status detected

SHORT
Status

SHORT Status detected

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GPT-10000 Series User Manual

Background

A test can be run when the tester is in READY
status.

Note

The tester cannot start to run a test under the
following conditions:

 A protection setting has been tripped; when a

protection setting has been tripped the
corresponding error message is displayed on
the screen. See page 232 for a comprehensive
list of the all the setting errors.

 The INTERLOCK function is ON and the

Interlock key is not inserted in the signal I/O
port (page 125).

 The STOP signal has been received remotely.

 If Double Action is ON, ensure the START

button is pressed immediately after the STOP
button (<0.5s).

Note

When a test is running the voltage output
cannot be changed, unless the test is under the
special manual mode. See page 89 for details.

Steps

1. Ensure the tester is in READY

status for the test to come.

Page 32

Running a MANU Test

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OPERATION

READY status

2. Press the START button when the

tester is in the READY status. The
manual test starts accordingly and
the tester goes into the TEST status.

TEST status

3. The test will start by showing the ongoing ramp

up time followed by the ongoing test time and
the ongoing ramp down time. The test will
continue until the test is finished or stopped.

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GPT-10000 Series User Manual

RAMP UP TIME

Ongoing RAMP UP TIME

TEST TIME

Ongoing TEST TIME

RAMP DOWN
TIME

Ongoing RAMP DOWN TIME

Note

RAMP DOWN time only appears when user
has activated it. See page 48 for details.

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OPERATION

ACW Example

Measured Current

Test Voltage

DCW Example

Measured Current

Test Voltage

IR Example

Measured Resistance

Test Voltage

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GPT-10000 Series User Manual

GB Example

Measured Resistance

Test Current

CONT Example

Measured Resistance

Test Current

Stop the Test

1. To stop the test at any time when it

is running, press the STOP button.
The test will stop immediately.
When the STOP button is pressed,
a judgment is not made and the
tester will restore to READY status.

Note

Do not touch any terminals, test leads or any other
connections when the test is on.

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OPERATION

Background

If the test is allowed to run to completion (the
test is not stopped or a protection setting is not
tripped) then the tester will judge the test as
either PASS or FAIL.

Note

The test will be judged PASS when:

 The HI SET and LO SET limits have not been

tripped during the test time.

The test will be judged FAIL when:

 Either the HI SET or LO SET limit has been

tripped during the test time.

 A protection setting has been tripped during

the test time. See page 232 for a list of error
messages.

PASS Judgment

1. When the test is judged as PASS,

PASS will be displayed on screen,
the buzzer will sound and the
PASS indicator will be lit green.

PASS Judgment

PASS / FAIL MANU Test

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GPT-10000 Series User Manual

2. The tester will immediately restore back to the

READY status after PASS judgment. However,
if the PASS HOLD is activated, PASS judgment
will persist until the set duration of PASS
HOLD is fully met. Refer to page 62 for details.

In addition, pressing the STOP
button during the set duration of
PASS HOLD can return to READY
status immediately.

Note

The buzzer will only sound if the Buzzer is set to
ON. See page 120 for details.

The START button is disabled when the buzzer is
beeping.

PASS Timing
Diagrams

The timing diagrams below show the ACW, DCW,
IR, GB and CONT timing for the START status,
TEST status and PASS judgment.

ACW PASS
Timing

RAMP DOWN
& DISCHARGE

Output V

time

START
TEST
PASS

RAMP UPTEST TIME

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OPERATION

DCW PASS
Timing

Output V

time

START
TEST
PASS

RAMP UPTEST TIME

RAMP DOWN
& DISCHARGE

IR PASS Timing

Output V

time

START
TEST
PASS

RAMP UPTEST TIME

RAMP DOWN
& DISCHARGE

GB PASS Timing

Output I

time

START
TEST
PASS

Test Time

RAMP UP

0.1s

CONT PASS
Timing

Output I

time

START
TEST
PASS

Test Time

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GPT-10000 Series User Manual

FAIL Judgment

1. When the test is judged as FAIL,

FAIL will be displayed on screen,
the buzzer will sound and the
FAIL indicator will be lit red.

As soon as a test is judged FAIL,
power is cut from the terminals.

FAIL Judgment

2. The FAIL judgment will be held on

the display until the STOP button
is pressed. Pressing the STOP
button will return the tester back to
the READY status.

Note

The buzzer will only sound if Fail Sound is set to
ON. See page 120 for details.

FAIL Timing
Diagrams

The timing diagrams below show the ACW, DCW,
IR, GB and CONT timing for the START status,
TEST status and FAIL judgment.

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OPERATION

ACW FAIL Timing

DISCHARGE

Output V

time

START
TEST
FAIL

RAMP UPTEST TIME

DCW FAIL Timing

DISCHARGE

Output V

time

START
TEST
FAIL

RAMP UPTEST TIME

IR FAIL Timing

DISCHARGE

Output V

time

START
TEST
FAIL

RAMP UPTEST TIME

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GPT-10000 Series User Manual

GB FAIL Timing

Output I

time

START
TEST
FAIL

Test TimeRAMP UP

0.1s

CONT FAIL
Timing

Output I

time

START
TEST
FAIL

Test Time

88

OPERATION

Special Test
Mode Overview

When MANU number 000 is selected, the
special test mode is activated. Under the special
test mode, the voltage can be changed during a
test in real time (ACW, DCW only). The test
function can also be changed when in READY
status, unlike under normal operation.

Separate settings can be saved under the special
test mode for each of the testing functions:
ACW, DCW, IR, GB and CONT. This means
different test setups for ACW, DCW, IR, GB
and CONT can be saved within the MANU
number 000 concurrently.

Steps

1. Choose MANU number 000 to

enter the special test mode.

Page 40

2. The settings of a previous test can

be loaded by pressing the
corresponding soft-keys on the
front panel.

For example, if you are currently in
DCW mode, pressing the ACW
key will load the ACW settings
that were previously stored in the
special manual mode.

Special MANU Test Mode (000)

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GPT-10000 Series User Manual

3. Set all the necessary parameters for

a test and save.

Note: A different test setup can be
saved for each test function (ACW,
DCW, IR, GB and CONT). Below is
an example of ACW function in
special manual mode.

Pages 41 ~
72

Special MANU Number 000

Running the Test

1. In special test mode (000), tests are

started and stopped in the same
way as for the normal manual test
mode. See page 76 for details.

2. If required, the scroll wheel can be

used to set the voltage level in real­time as the test is running under
either ACW or DCW mode.

ACW
DCW

0.050kV ~ 5kV

0.050kV ~ 6kV

Results

Test judgments are the same as
those for the normal manual tests.
Please see the PASS/FAIL MANU
Test section for details.

Page 83

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OPERATION

Sweep Function
Overview

The GPT-10000 Series has access to the sweep
mode function, which creates a graph of one of
the ACW, DCW, IR, GB or CONT tests in either
Manual test or the special MANU mode. The
graph will plot the output voltage, current or
resistance versus time. After the test has been
completed, the test current, voltage or
resistance at any point in time can be fetched
and viewed in the graph.

Below is an example of the resultant sweep plot
of a DCW test where a DC voltage is ramped up
to a user-defined level until the HI SET current
level has been tripped or the test time runs out.

Test V
Meas. I

time

Start time

RAMP TIME

Legend: Voltage: Current

TEST time

Voltage

Current

The test items that are plotted on the sweep
graph depend on the type of test that is
performed.

TEST

Graph Test Items

ACW

Measured voltage, measured current (V, I)

DCW

Measured voltage, measured current (V, I)

IR

Measured voltage, measured resistance (V, R)

GB

Measured current, measured resistance (I, R)

CONT

Measured current, measured resistance (I, R)

Sweep Function

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GPT-10000 Series User Manual

Steps of View
Sweep Graph

1. When a test has finished, press

the corresponding button, e.g.,
DCW button for DCW test, to
view the result of the sweep in
an intuitive graph.

Graph Test Items:

TEST

GREEN

BLUE

ACW

Measured voltage

Measured current

DCW

Measured voltage

Measured current

IR

Measured voltage

Measured resistance

GB

Measured current

Measured resistance

CONT

Measured current

Measured resistance

DCW Sweep
Graph Example

Cursor

Measured Current

(READ I in Blue)

Measured Voltage

(READ V in Green)

The values of point by cursor

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OPERATION

2. Use the scroll wheel to move the

cursor on the time axis (red
highlight in x-axis). The measured
values on the green and blue lines
at that particular point in time are
shown within the table below
(orange highlight). Also, the test
function along with the test number
is clearly shown within the table.
The HI in y-axis (yellow highlight)
along with the dotted line in red
indicates the HI SET value and the
point of tripped time.

Turn Pages

3. The resultant graph will be over 1 page

when test time is beyond 650 steps (the
interval of each step is 0.1s). In this
case, press PAGE soft-key to switch
among each page for full graphs.

Fast-forward

4. Press the MOVE soft-key before

moving the cursor to fast-forward
steps by 10 times (x 10), which is
practical when steps are many. Press
the MOVE soft-key again to return
back to the normal “x 1” speed.

Exit the Results
Graph

To exit the sweep graph, press
the corresponding button again
to return back to Manual test.

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GPT-10000 Series User Manual

Automatic Tests

This section describes how to create, edit and run automatic tests.
Automatic tests allow you to link up to 10 different MANU tests
and run them sequentially within a single AUTO test. Each stored
MANU test is used as a test step when creating an AUTO test. In
addition, up to 5 groups of AUTO test can be interconnected
together to present an ever-advanced AUTO tests.

 Choose/Recall an AUTO Test→ from page 95
 Creating an AUTO Test File Name → from page 96
 Adding a Step to the AUTO Test → from page 97
 Continuous AUTO Tests → from page 99
 AUTO Test Page Editing → from page 101
 Running an Automatic Test → from page 106
 Automatic Test Results → from page 112

Before operating the GPT-12000 please read the safety precautions
as outlined in the Set Up chapter on page 21.

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OPERATION

Background

The tester must first be put into AUTO mode to
create or run automatic tests.

Up to 100 automatic tests can be saved or
recalled.

Steps

1. If the tester is in MANU or

SYSTEM mode, press the AUTO
key on the front panel. This will
put the tester into Auto mode.

2. After entering the AUTO mode,

first use the scroll wheel to choose
the AUTO number.

AUTO #

001~100

AUTO number cursor READY status

Note

The AUTO number can only be chosen
in READY status. If the status is either
PASS or FAIL, press the STOP button
to restore back to the READY status.

Choose/Recall an AUTO Test

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GPT-10000 Series User Manual

Background

Each automatic test can have a user-defined test
file name (Default: AUTO_NAME) up to 10
characters long. See the character list below for
the allowed characters.

Character List

0 1 2 3 4 5 6 7 8 9

W X Y ZM VO P RQ T USNLA B C D E F G H I J K

w x y zm vo p rq t usnla b c d e f g h i j k

_

Steps

1. Use the LEFT/RIGHT arrow soft-

keys to move the cursor to the
AUTO_NAME (default name) field.
The characters table will appear in
the right hand accordingly.

AUTO name cursor Character Table

2. Use the scroll wheel to scroll

through the available characters.

3. Press the LEFT / RIGHT arrow soft-

keys to move the cursor to the next
character.

Creating an AUTO Test File Name

96

OPERATION

4. The AUTO test file name is set when the

current AUTO test is saved or when the cursor
is moved to another setting.

Background

Up to 10 MANU tests (steps) can be added to
an automatic (AUTO) test. Each step is added
in a sequential order.

Steps

1. Press the DOWN arrow key to

bring the cursor to the MANU
STEP number.

MANU STEP number cursor

2. Use the scroll wheel to choose a

MANU STEP number to add to the
automatic test.

MANU STEP number

001~100, CON

CON

It indicates that this group of AUTO test
can be connected with the next group.
Refer to page 99 for more details.

Adding a Step to the AUTO Test

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GPT-10000 Series User Manual

3. Further press the DOWN arrow

key followed by using the scroll
wheel to choose another MANU
STEP number to add to the
automatic test.

MANU STEP number cursor (2nd)

4. Repeat the previous steps for any other MANU

tests that you wish to add to the automatic test.

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OPERATION

Background

As mentioned previously, up to 10 MANU
steps can be grouped to form an AUTO test and
user can designate each step from MANU step
number 1 to 100 for an AUTO test. However, it
is available to interconnect different AUTO
tests together to present a series of AUTO tests.

Steps

1. Follow the steps of “Adding a Step to the

AUTO Test” in page 97 first. See the example
below where 5 MANU steps have been
added into the AUTO-001 group.

2. Press the DOWN arrow key to

bring the cursor to the next MANU
STEP field followed by using the
scroll wheel to choose CON from
the MANU STEP options.

CON is chosen from MENU STEP

Continuous AUTO Tests

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GPT-10000 Series User Manual

3. Repeat the step 1 to form another group of

AUTO-002 test as the following display
shown.

AUTO-002 comprising 3 MANU steps

4. After the previous steps, return to

the AUTO-001 test page followed
by pressing START button for
automatic test. The AUTO-002 test
will ensue from the end of AUTO­001 test. The continuous AUTO
tests are thus established perfectly.

Note

 Up to 5 groups of AUTO tests can be

interconnected. The former 4 groups of
AUTO tests, due to CON occupation, owns
up to 9 MANU steps, respectively, whereas
the last group can own up to 10 MANU
steps. Thus, it is 46 MANU steps at the
maximum for a continuously interconnected
AUTO test.

 The interconnected groups of AUTO test are

limited in serial numbers. That is to say,
when initializing from AUTO-005, for
example, the next group will be definitely
AUTO-006 followed by AUTO-007, if
available, and so forth up to 5 groups.

100