GW Instek GDM-906 Series, GDM-9060, GDM-9061 User Manual

Dual Measurement Multimeter

GDM-9060/9061

USER MANUAL

GW INSTEK PART NO. 82DM-90610E01

ISO-9001 CERTIFIED MANUFACTURER

This manual contains proprietary information, which is protected by
copyrights. 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
right to change specifications, 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 (R.O.C.).

Table of Contents

Table of Contents

SAFETY INSTRUCTIONS .................................................... 5

Safety Symbols .................................................................... 5

Safety Guidelines ................................................................. 6

GETTING STARTED .......................................................... 10

Front Panel Overview .......................................................... 13

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

Status Bar ............................................................................ 21

Set Up.................................................................................. 24

BASIC MEASUREMENT .................................................... 26

Basic Measurement Overview ............................................. 27

AC/DC Voltage Measurement .............................................. 30

AC/DC Current Measurement ............................................. 37

2W/4W Resistance Measurement ........................................ 41

Continuity Test .................................................................... 44

Diode Measurement ............................................................ 46

Frequency/Period Measurement .......................................... 47

Capacitance Measurement .................................................. 51

Temperature Measurement ................................................. 54

DUAL MEASUREMENT .................................................... 64

Dual Measurement .............................................................. 64

ADVANCED MEASUREMENT ........................................... 70

Advanced Measurement Overview ...................................... 71

Relative Value Measurement ............................................... 72

Hold Measurement ............................................................. 74

Trigger Setting ..................................................................... 77

Filter Setting ........................................................................ 83

Math Measurement ............................................................. 86

DIGITAL I/O ................................................................... 110

Digital I/O Overview ........................................................... 111

3

GDM-906X Series User Manual

Application: Compare Mode ............................................... 113

Application: 4094 / User Mode ........................................... 120

Application: External Trigger ............................................... 128

SYSTEM & FIRMWARE ................................................... 130

View System Info ................................................................ 131

Firmware Update ................................................................ 132

MENU SETTING ............................................................. 134

Configure System ............................................................... 135

Configure Display ............................................................... 153

SCREENSHOT & LOG .................................................... 171

Capture ............................................................................... 172

Save Reading ...................................................................... 175

DISPLAY SETTING .......................................................... 179

Digit .................................................................................... 180

Display ................................................................................ 181

REMOTE CONTROL ....................................................... 200

Configure Interface ............................................................. 201

Web Control Interface ......................................................... 233

Command Syntax ................................................................ 238

Command Set ..................................................................... 241

Status system ..................................................................... 327

APPENDIX ...................................................................... 331

Fuse Replacement ............................................................... 332

Battery Replacement ........................................................... 336

Factory Default Parameters ................................................ 338

Specifications ..................................................................... 342

GDM-9061 Section ............................................................. 343

GDM-9060 Section ............................................................. 354

Declaration of Conformity .................................................. 366

INDEX ............................................................................ 367

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 GDM-9060/9061 or to other
property.

DANGER High Voltage

Attention Refer to the Manual

Protective Conductor Terminal

Earth (ground) Terminal

Do not dispose electronic equipment as unsorted
municipal waste. Please use a separate collection facility
or contact the supplier from which this instrument was
purchased.

SAFETY INSTRUCTIONS

This chapter contains important safety instructions that
you must follow when operating the GDM-9060/9061
and when keeping it in storage. Read the following
before any operation to insure your safety and to keep
the GDM-9060/9061 in the best possible condition.

Safety Symbols

These safety symbols may appear in this manual or on the GDM-9060/9061.

5

GDM-906X Series User Manual

General Guideline

CAUTION

 Make sure that the voltage input level does not exceed

DC1000V/AC750V.

 Make sure the current input level does not exceed 10A.
 Do not place any heavy object on the instrument.
 Avoid severe impact or rough handling that can lead to

damaging the instrument.

 Do not discharge static electricity to the instrument.
 Use only mating connectors, not bare wires, for the

terminals.

 Do not block or obstruct the cooling fan vent opening.
 Do not perform measurement at the source of a

low-voltage installation or at building installations
(Note below).

 Do not disassemble the instrument unless you are

qualified as service personnel.

 Make sure that the Sense LO terminal to Input LO is

limited to 2Vpk, the Sense HI to Sense LO terminals
are limited to 200Vpk and the Input LO to earth is
limited to 500Vpk.

(Note) EN 61010-1:2010 specifies the measurement categories and
their requirements as follows. The GDM-9060/9061 falls under
category II 300V.

 Measurement category IV is for measurement performed at the source

of low-voltage installation.

 Measurement category III is for measurement performed in the

building installation.

 Measurement category II is for measurement performed on the circuits

directly connected to the low voltage installation.

Power Supply

WARNING

 AC Input voltage: 100/120/220/240 V AC ±10%,

50Hz / 60Hz / 400Hz ±10%

 The power supply voltage should not fluctuate more

than 10%.

 Connect the protective grounding conductor of the

AC power cord to an earth ground, to avoid electrical
shock.

Safety Guidelines

6

SAFETY INSTRUCTIONS

WARNING

(GDM-9061 only)

 Due to the fact that the Front/Rear Input Switch on

the front panel is not proposed as an active
multiplexer, do Not change the input switch when
signals are present on either rear or front set of
terminals. Intrument damage and risk of electric shock
may occur if switching the input switch when high
voltage or current is present.

Fuse

WARNING

 Fuse type: T0.25A 100/120 VAC

T0.125A 220/240 VAC

 Make sure the correct type of fuse is installed before

power up.

 To avoid risk of fire, replace the fuse only with the

specified type and rating.

 Disconnect the power cord before fuse replacement.
 Make sure the cause of a fuse blowout is fixed before

fuse replacement.

Cleaning the
Instrument

 Disconnect the power cord before cleaning.
 Use a soft cloth dampened in a solution of mild

detergent and water. Do not spray any liquid into the
GDM-9060/9061.

 Do not use chemicals or cleaners containing harsh

material such as benzene, toluene, xylene, and acetone.

Operation
Environment

 Location: Indoor, no direct sunlight, dust free, almost

non-conductive pollution (Note below)

 Temperature: Full accuracy for 0°C to 55°C.
 Humidity:

< 30°C: < 80%RH (non-condensing)
30°C~40°C: <70%RH (non-condensing)
>40°C: <50%RH (non-condensing)

 Altitude: <2000m

7

GDM-906X Series User Manual

(Note) EN 61010-1:2010 specifies the pollution degrees and their
requirements as follows. The GDM-9060/9061 falls under degree 2.

Pollution refers to “addition of foreign matter, solid, liquid, or

gaseous (ionized gases), that may produce a reduction of dielectric
strength or surface resistivity”.

 Pollution degree 1: No pollution or only dry, non-conductive pollution

occurs. The pollution has no influence.

 Pollution degree 2: Normally only non-conductive pollution occurs.

Occasionally, however, a temporary conductivity caused by
condensation must be expected.

 Pollution degree 3: Conductive pollution occurs, or dry, non-conductive

pollution occurs which becomes conductive due to condensation which
is expected. In such conditions, equipment is normally protected
against exposure to direct sunlight, precipitation, and full wind pressure,
but neither temperature nor humidity is controlled.

Storage
Environment

 Location: Indoor
 Temperature: −40°C to 70°C
 Humidity: <90%RH(non-condensing)

Disposal

Do not dispose this instrument as unsorted municipal
waste. Please use a separate collection facility or contact
the supplier from which this instrument was purchased.
Please make sure discarded electrical waste is properly
recycled to reduce environmental impact.

8

SAFETY INSTRUCTIONS

Green/ Yellow:

Earth

Blue:

Neutral

Brown:

Live (Phase)

Power cord for the United Kingdom

When using the GDM-9060/9061 in the United Kingdom, make sure the
power cord meets the following safety instructions.

NOTE: This lead / appliance must only be wired by competent persons

WARNING: THIS APPLIANCE MUST BE EARTHED

IMPORTANT: The wires in this lead are coloured in accordance with the
following code:

As the colours of the wires in main leads may not correspond with the
coloured marking identified in your plug/appliance, proceed as follows:

The wire which is coloured Green & Yellow must be connected to the Earth
terminal marked with either the letter E, the earth symbol or coloured
Green/Green & Yellow.

The wire which is coloured Blue must be connected to the terminal which is
marked with the letter N or coloured Blue or Black.

The wire which is coloured Brown must be connected to the terminal marked
with the letter L or P or coloured Brown or Red.

If in doubt, consult the instructions provided with the equipment or contact
the supplier.

This cable/appliance should be protected by a suitably rated and approved
HBC mains fuse: refer to the rating information on the equipment and/or
user instructions for details. As a guide, a cable of 0.75mm2 should be
protected by a 3A or 5A fuse. Larger conductors would normally require 13A
types, depending on the connection method used.

Any exposed wiring from a cable, plug or connection that is engaged in a live
socket is extremely hazardous. If a cable or plug is deemed hazardous, turn
off the mains power and remove the cable, any fuses and fuse assemblies. All
hazardous wiring must be immediately destroyed and replaced in accordance
to the above standard.

9

GDM-906X Series User Manual

GETTING STARTED

This chapter describes the GDM-9060/9061 in a nutshell,
including an Overview of its main features and front /
rear panel introduction. After going through the
Overview, follow the Power-up sequence to properly
setup the GDM-9060/9061.

Please note the information in this manual was correct at
the time of printing. However as GW Instek continues to
improve its products, changes can occur at any time
without notice. Please see the GW Instek website for the
latest information and content.

Front Panel Overview .......................................................... 13

Measurement Keys (basic) ........................................................ 15

Measurement Keys (advanced) ................................................. 17

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

Status Bar ........................................................................... 21

Set Up ................................................................................. 24

Horizontal/Tilt/Vertical Applications ........................................ 24

Power Up .................................................................................. 25

10

GETTING STARTED

Performance

 The highest DCV accuracy:

GDM-9061: 35ppm
GDM-9060: 75ppm

 The highest current:

GDM-9061: 10A
GDM-9060: 3A

 The highest voltage: 1000V
 The highest ACV frequency response: 300 kHz
 The fastest sampling rate:

1k Readings/sec (GDM-9060)
10k Readings/sec (GDM-9061)

 Internal memory:

10k read memory (GDM-9060)
100k read memory (GDM-9061)

 Data Logging to USB

Features

 6

2

1

digits

 Multi functions: ACV, DCV, ACI, DCI, 2W/4W R, Hz,

Temp, Continuity, Diode, Period, Capacitance test,
REL, dBm, Hold, MX+B, 1/X, REF%, dB, Compare
and Statistics.

 Manual or Auto ranging
 AC true RMS
 Built-in DC Ratio function
 Up to 3 temerature measurements: RTD, Thermistor

and Thermocouples (Cold-Junction Compensation)

 Graph Display: BarMeter, TrendChart, Histogram

Interface

 USB device/RS232/GPIB(optional)/LAN for remote

control

 9-pin Digital I/O port
 USB device port supports USBCDC and USBTMC
 USB Host

GDM-9060/9061 Characteristics

The GDM-9060/9061 is a portable, dual-display digital
multimeter suitable for a wide range of applications, such
as production testing, research, and field verification.

11

GDM-906X Series User Manual

Optional Items

 GPIB card
 GTL-207A
 GTL-234
 GTL-246
 GTL-205

 GTL-308

Test leads
RS-232 Cable , 2000mm
USB Cable, USB 2.0, A-B type, 1200mm
Temperature Probe Adapter with
Thermal Coupling (K-type)
4W+Shield Test leads , 1.5M

12

GETTING STARTED

1

2

3

4

5 8 7 0 A B

6 9 C D

Item

Description

1

ESC (Escape) Key

2

Print screen / Data log Key

3

USB Host Port

4

Power Switch

5

Main Display

6

Function keys (F1 through F6, functions vary per modes)

7

Knob key

8

Arrow Keys

9

Measurement Keys

0

Range Selection Keys

A

HI and LO Sense Terminals

B

HI and LO Input Terminals

C

AC/DC Current Input Terminals (10 A terminal available on
GDM-9061 only)

D

Front/Rear Input Switch (GDM-9061 only)

Front Panel Overview

13

GDM-906X Series User Manual

ESC (Escape) Key

Single press to escape from current page.
Presses and holds the ESC key for 2
seconds to toggle between full display
and simple display, which conceals the
status bar, math display as well as
additional info for lightweight use.

Refer to page 21, page 160 and page 168
for more details of status bar, math
display and additional info, respectively.

Screenshot / Data
Log Saving Key

Captures the current screenshot or saves
the data log for reading. For details, refer
to page 171.

USB Host Port

Connects with USB flash drive for data
storage.

Power Switch

Turns On or Off the main
power. For the power up sequence, see
page 25.

Main Display

The 4.3”TFT LCD shows measurement results and
parameters. For display configurations, see page 153.

Measurement
Keys

There are 4 rows in total of both basic and advanced
measurement keys deployed on the front panel. For the
details, refer to page 15 and page 17.

Function Keys

The 6 keys have varied functions per different settings.

Knob Key

Scrolls the knob to select parameters in
various setting pages. Press the key until
click to confirm setting.

Arrow Keys

Presses the left or right arrow keys to
move parameter cursor rightward or
leftward per requirement.

Range Selection
Keys

Presses the Auto key to activate
auto-range mode, whilst clicking “+” or
“–“ key can increase or decrease range
parameter, respectively.

14

GETTING STARTED

DC/AC 3A
Terminal

DC/AC current input

DC: 100μA~3A

AC: 100μA~3A

For details see page 37.

For the fuse replacement procedure, see
page 333.

Sense LO
Terminal

Accepts LO sense line in 4W resistance
measurement. For details, see page 41.

Sense HI
Terminal

Accepts HI sense line in 4W resistance
measurement. For details, see page 41.

Input LO
Terminal

Accepts ground (COM) line in all
measurements except the sense line in
4W Resistance (page 41).
The maximum withstand voltage
between this terminal and earth is
500Vpk.

Input HI

Terminal

Used as an input port for all
measurements except for DC/AC
Current measurements.

DC/AC 10A
Terminal

(GDM-9061 only)

Accepts DC/AC Current input.

For DCI or ACI details, see page 37.

Background

The upper 2 rows of measurement keys are used for
basic GDM-9060/9061 measurements such as voltage,
current, resistance, continuity, diode, frequency, period,
capacitance and temperature. Each key has a primary
and secondary function individually. The secondary
function is accessed in conjunction with the Shift key.

Measurement Keys (basic)

15

GDM-906X Series User Manual

Shift

The Shift key is used to select the
secondary functions assigned to each
front panel key. When pressed, the
Shift indicator appears in the display.

Local

For the Local key, it helps release
from the remote control and
returns the instrument to local
panel operation (page 201).

ACV

Measures AC Voltage (page 30).

Shift → ACV (ACI)

Measures AC Current (page 37).

DCV

Measures DC Voltage (page 30).

Shift → DCV (DCI)

Measures DC Current (page 37).

Ω2W (Resistance)

Measures 2-wire Resistance (page

41).

Shift → Ω2W (Ω4W
Resistance)

Measures 4-wire Resistance (page
41 ).

(Continuity)

Tests Continuity (page 44).

Shift →
(Diode )

Tests Diode (page 46).

FREQ (Frequency)

Measures Frequency (page 47).

Shift + FREQ
(Capacitance )

Measures Capacitance (page 51).

TEMP
(Temperature)

Measures Temperature (page 54).

16

GETTING STARTED

Background

The lower 2 rows of measurement keys are used for
more advanced functions. Each key has a primary and
secondary function. The secondary function is accessed
in conjunction with the Shift key.

REL

Measures the Relative value (page

72).

Shift → REL
(REL#)

Manually sets the reference value for
the Relative value measurement
(page 72).

Hold

Activates the Hold function (page

74).

Shift → Hold
(Hold#)

Manually sets the parameters for the
Hold measurement (page 74).

TRIG (Trigger)

Activates the Trigger function (page

77).

Shift → TRIG
(TRIG#)

Manually sets the parameters for the
Trigger function (page 77).

Menu

Enters the setting pages in various
Menus (page 134).

Shift → Menu
(Filter)

Manually sets the parameters for the
Filter function (page 83).

DISP

Display settings (page 179).

Shift → DISP
(Math)

The Math functions including dB,
dBm, Compare, MX+B, 1/X and
Percent manually (page 86).

Measurement Keys (advanced)

17

GDM-906X Series User Manual

1

240

2 5 9 0 A

4 3 6 7 8 B

Item

Description

1

HI and LO Sense Terminals (GDM-9061 only)

2

HI and LO Input Terminals (GDM-9061 only)

3

3 A Current Terminal (GDM-9061 only)

4

3 A Current Terminal Fuse

5

DIGITAL I/O Connector

6

RS-232 Interface Connector

7

USB Interface Connector (B Type)

8

Ethernet (LAN) Connector

9

Fan Vents

0

AC Mains Input (Power Cord Socket)

A

AC Mains Line Voltage Selector and Fuse Socket

B

GPIB Connector (optional)

Rear Panel Overview

18

GETTING STARTED

Power Cord Socket

Accepts the power cord. AC
100/120/220/240V ±10%,
50Hz / 60Hz /400Hz ±10%.

For power on sequence, see page

25.

Fuse Socket

Holds the main fuse:

100/120 VAC: T0.25A

220/240 VAC: T0.125A

For fuse replacement details, see
page 332.

RS-232C port

Accepts an RS-232C cable for
remote control; DB-9 male
connector.

For remote control details, see
page 205.

USB device port

Accepts a USB device cable for
remote control; Type B, female
connector.

For remote control details, see
page 202.

LAN port

Accepts a LAN for remote
control;

For remote control details, see
page 216.

Digital I/O port

Accepts a digital I/O cable for the
Hi/Lo limit tests; DB-9 pin,
female connector.

For digital I/O details, see page

110.

Optional GPIB port

Accepts an optional GPIB card.

For GPIB details, see page 213.

19

GDM-906X Series User Manual

Fan Vents

For heat ventilation when machine
is under operation.

Sense LO Terminal
(GDM-9061 only)

Accepts LO sense line in 4W
resistance measurement. For
details, see page 41.

Sense HI Terminal
(GDM-9061 only)

Accepts HI sense line in 4W
resistance measurement. For
details, see page 41.

Input LO Terminal
(GDM-9061 only)

Accepts ground (COM) line in all
measurements except the sense
line in 4W Resistance (page 41).
The maximum withstand voltage
between this terminal and earth is
500Vpk.

Input HI

Terminal
(GDM-9061 only)

Used as an input port for all
measurements except for DC/AC
Current measurements.

DC/AC 3A Terminal
(GDM-9061 only)

DC/AC current input

DC: 100μA~3A

AC: 100μA~3A

For details see page 37.

DC/AC 3.15A Input
Current Fuse

Holds the current fuse: T3.15A,
500V , 5*20mm

For fuse replacement details, see
page 333.

20

GETTING STARTED

Background

Identify each icon within the top status bar.

Status Bar
Display

1 2 3 4 5 6 7 8 9 0

A

Item

Description

1

Local/Remote control icon

2

RS-232/USB-CDC/USB-TMC/LAN/GPIB interface icon

3

Error icon for commands from remote control

4

Rear panel switch icon

5

Shift key identification icon

6

The first and second function menu switch icon

7

Digital I/O mode icon (User/4094)

8

USB flash drive connection icon

9

Beep/Key Sound setting icon

0

Internet connection status icon

A

Time display

Status Bar

21

GDM-906X Series User Manual

Local Control

It indicates the unit is under local
control mode.

Remote Control

It indicates the unit is under remote
control. Refer to page 200 for details.

RS-232

It indicates RS-232 interface is activated.
Refer to page 205 for details.

USB - CDC

It indicates USB - CDC interface is
activated. Refer to page 205 for details.

USB - TMC

It indicates USB - TMC interface is
activated. Refer to page 205 for details.

LAN

It indicates LAN interface is activated.
Refer to page 216 for details.

GPIB

It indicates GPIB interface is activated.
Refer to page 213 for details.

ERROR

It indicates error occurs in commands.
To erase the error icon, it is required to
read or sweep the error by remote
control commands or reboot action.
Refer to page 313 for details.

Rear Panel

It indicates rear panel control. When the
icon appears, only rear panel is available;
otherwise, use front panel for
measurement. Refer to page 18 for details.

Shift

It indicates the shift key is being pressed
ready for in conjunction with other keys
for additional functions. Refer to page
15 for details.

First function
menu

It indicates the active bottom menu
corresponding to function keys is the
first menu. Click the Knob key (Enter)
to switch to the second function menu.

22

GETTING STARTED

Second function
menu

It indicates the active bottom menu
corresponding to functional keys is the
second menu. Click the Knob key (Enter)
to switch to the first function menu.

Digital I/O –
4094 mode

It indicates Digital I/O – 4094 mode is
enabled. Refer to page 120 for details.

Digital I/O –
User mode

It indicates Digital I/O – User mode is
enabled. Refer to page 120 for details.

Flash Drive –
Capture

It indicates the Capture mode is ready
for the connected flash drive. Refer to
the page 171 for details of Capture.

Flash Drive –
Save Reading

It indicates the Save Reading mode is
ready for the connected flash drive. Refer
to page 175 for details of Save Reading.

Flash Drive –
Failure

It indicates something error occurs and
thus flash drive fails to connect to unit.

Sound – Beep

It indicates sound of beep is enabled.
Refer to page 135 for details.

Sound - Key

It indicates sound of key is enabled.
Refer to page 136 for details.

Sound – All

It indicates sounds of beep and key are
both enabled.

Sound – Off

It indicates sounds of beep and key are
both disabled.

Internet On

It indicates internet connection is
established. Refer to page 216 for details.

Internet Off

It indicates internet connection is Not
well established.

Time Display

It indicates the time display. For detailed
setting, refer to page 138.

23

GDM-906X Series User Manual

Pull out the handle sideways and rotate it clockwise for the applications below.

Horizontal

Tilt

Place the unit horizontally.

Rotate the handle for tilt stand.

Vertical

Place the handle vertically for hand carry.

Set Up

Horizontal/Tilt/Vertical Applications

24

Power Up

Steps

1. Ensure the correct line voltage is

clearly shown on the fuse socket
(240V in the right figure for
example). If not, see page 332 to
set the proper line voltage and fuse.

2. Connect the power

cord to the AC
Voltage input.

Note

Make sure the ground connector on the power cord is
connected to a safety ground. This will affect the
measurement accuracy.

3. Push the power button

until click to turn on the
main power switch on
the front panel.

4. The screen firstly shows the logo brand of

GWINSTEK followed by the message “Load the

default parameter” indicating default parameter is loaded

in the initial startup.

GETTING STARTED

25

GDM-906X Series User Manual

BASIC MEASUREMENT

Basic Measurement Overview ............................................ 27

Refresh Rate .............................................................................. 27

Automatic (Internal)/Single Triggering ..................................... 29

AC/DC Voltage Measurement ............................................. 30

Select Voltage Range ................................................................. 31

General Voltage Setting ............................................................. 32

Voltage Conversion Table .......................................................... 35

Crest Factor Table ...................................................................... 36

AC/DC Current Measurement ............................................ 37

Select Current Range ................................................................. 39

General Current Setting ............................................................ 40

2W/4W Resistance Measurement ....................................... 41

Select Resistance Range ............................................................ 42

General Resistance Setting ....................................................... 43

Continuity Test .................................................................... 44

Set Continuity Threshold ........................................................... 45

Diode Measurement ........................................................... 46

Frequency/Period Measurement ......................................... 47

Frequency/Period In-Depth Setting ........................................... 49

Capacitance Measurement ................................................. 51

Cable Open Function ................................................................. 52

Select Capacitance Range .......................................................... 53

Temperature Measurement ................................................. 54

General Temperature Setting .................................................... 55

Thermocouple Sensor Type ....................................................... 56

Reference Junction Temperature (SIM Temperature) ................ 56

Thermocouple Setting ............................................................... 57

RTD 2W/4W Setting .................................................................. 58

Set User Type of RTD 2W/4W .................................................... 59

Thermistor 2W/4W Setting ....................................................... 61

Set User Type of Thermistor 2W/4W ......................................... 62

Dual Measurement ............................................................. 64

Refresh Rate .............................................................................. 67

Connect the Test Leads ............................................................. 68

26

BASIC MEASUREMENT

Background

Basic measurement refers to the several types of measurements
assigned to the upper 2 row keys on the front panel.

Measurement
type

ACV

AC Voltage

DCV

DC Voltage

ACI

AC Current

DCI

DC Current

Ω 2W/ Ω 4W

2-wire and 4-wire Resistance

Continuity/Diode

FREQ

Frequency/Capacitance

TEMP

Temperature

Advanced
measurement

Advanced measurement (page 70) mainly refers to the
operation using the result obtained from one or more of the
basic measurements.

Background

Refresh rate defines how frequently the GDM-9060/9061
captures and updates measurement data. A faster refresh rate
yields a lower accuracy and resolution. A slower refresh rate
yields a higher accuracy and resolution. Consider these
tradeoffs when selecting the refresh rate.

Measurement Type

Refresh Rate Available

DCV/DCI/ 2W/4W

5/s

20/s

60/s

100/s

400/s

1k/s*1

1.2k/s*2

2.4k/s*2

4.8k/s*2

7.2k/s*2

10k/s*2

ACV/ACI

1/s

5/s

20/s

Continuity / Diode

60/s

100/s

400/s

Frequency & Period

1s

100ms

10ms

Capacitance

2/s

Temperature

5/s

20/s

60/s

Note

*1

is applicable to GDM-9060, whilst *2 is specifically for GDM-9061.

Basic Measurement Overview

Refresh Rate

27

GDM-906X Series User Manual

Selection
Procedure

Press the left or right arrow keys to change the
refresh rate.

You can also press the F2 (Speed) key to select a
desired rate for measurement. Press corresponding
function key in accord with the desired option on
screen display. Also, the F6 (More ½) key shows
when available options are more than single page.

The refresh rate will be shown at the upper right
corner of the display. See the example below.

Active Refresh Rate

Note

The refresh rate cannot be set for capacitance measurement.

Reading
indicator

The reading indicator , which is located in the lower-right
corner of display, flashes according to the defined refresh rate
setting.

Reading Indicator

28

BASIC MEASUREMENT

Overview

By default, the GDM-9060/9061 automatically triggers
according to the refresh rate. See the previous page for refresh
rate setting details. The TRIG key, on the other hand, is used to
manually trigger once per click.

Single Trigger

Simply press the TRIG key to Single trigger
measurement. Pressing once stands for trigger for
single time. See the figure below for example.

Indicator Single Trigger Mode

Automatic
(Internal)
Trigger

Press and hold the TRIG key for 2 seconds to
return to the Automatic (Internal) Trigger.

Indicator Auto (Internal)

Trigger Mode

(Press & hold

for 2 seconds)

Note

Single triggering is not supported for capacitance
measurements.

Automatic (Internal)/Single Triggering

29

GDM-906X Series User Manual

Voltage type

AC

0 ~ 750V

DC

0 ~ 1000V

Activate ACV/
DCV

Press the ACV key or DCV key to
measure AC or DC voltage,
respectively.

or

ACV/DCV mode
display appears

The mode will switch to ACV, DCV mode immediately.
See the figure below for example.

DC or AC Voltage

Indicates DC or AC Voltage mode

5/s

Indicates the active refresh rate

Indicates Automatic range selection

Range: 100mV

Indicates the available range of Voltage

+000.1066 mVDC

Indicates the exact measured value

Connect the test
lead and measure

Connect the test lead between the
Input HI and Input LO terminals.
The display updates the reading.

AC/DC Voltage Measurement

30