GW Instek GDM-8261 User manual

DMM Viewer
GDM-8261
Remote Viewer Guide
GW INSTEK PART NO.
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.

Table of Contents
3
TABLE OF CONTENTS
INTRODUCTION ...........................................................................................................4
CD-ROM Overview...................................................................................................................... 5
SETUP.............................................................................................................................7
Connection .................................................................................................................................. 7
Installation ................................................................................................................................ 10
Uninstallation............................................................................................................................ 12
Configuration ............................................................................................................................ 14
MEASUREMENT ..........................................................................................................17
PLOT GRAPH/ SAVE....................................................................................................22
SCANNER FUNCTION ................................................................................................27
FIRMWARE/ VERSION ................................................................................................32

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4
INTRODUCTION
The GDM-8261 Remote Viewer Guide is intended for showing how to use
the remote viewer PC software, DMM Viewer, on Windows OS based
computers (Windows XP, Windows 7 supported).
This manual consists of the following chapters.
Setup: Connection, Installation, Uninstallation, Configuration
Measurement: Measurement procedure, configuration settings
Plot Graph/Save: Storing data, plotting data in a graph
Firmware update: Accessing the firmware and firmware update manual
Software
overview
The software contains the following functions.
Making measurements in real-time
Displaying measurement results in real-time
Storing measurement data

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CD-ROM Overview
The CD-ROM contains all the items needed to install and run the software,
plus more.
Main menu Inserting the CD-ROM into the PC automatically
opens the menu screen. If it does not, double-click on
the Autorun.exe file in the root directory of the
CD-ROM.
Autorun.exe file
The main menu screen
Website
If you have an active internet connection, this
hyperlink will take you to the GWInstek website.
Install
DMM-VIEWER
software
menu
This menu will allow you to install DMM Viewer and
loads the DMM Viewer user manual. For details about
software installation, see page 10.
Install USB Driver
menu
This menu installs the USB driver for the GDM-8261
onto the PC. For details about software installation, see
page 10.

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User Manual
menu
This menu loads the DMM User Manual.
Firmware Update
Software
menu
This menu accesses a copy of the firmware and loads
the Firmware Upgrade Manual. For details about
upgrading the firmware, see page27.
View CD-ROM
Contents
menu
This menu opens the contents of the CD-ROM in
Explorer.
Quit menu
This menu closes the menu screen.

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SETUP
Connection
When using DMM Viewer in Conjunction with the GDM-8261, use the
following instructions to set the DMM to RS232 or USB mode each time the
DMM is turned on.
NOTE: If you are using DMM Viewer in software demonstration mode (no
hardware) skip the Connection and Configuration procedure and install the
DMM Viewer software, page 10.
Note The following procedure describes a USB
connection configuration and procedure. Skip
this step if connecting with an RS232 cable.
1. Configure the
DMM for USB
1. Press the Shift key, the 2ND
(Menu) key, then the Left key
until the I/O configuration
menu appears.
2ND
MENU
2. Press the Down key then
press the Left key until the
USB selection display
appears.
3. Press the Down key. The
USB ON/OFF selection
appears.

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4. The USB ON or OFF
selection appears. Press the
Up or Down key to turn on.
5. Press the ENTER key to
confirm the USB (either on
or off) selection.
6. Press the EXT key to get out
of the configuration mode.
Note When the GDM-8261 is turned off, the USB
configuration will be lost.
Note The following procedure describes an RS232
connection configuration and procedure. Skip
this step if connecting with USB.
2. Configure the
DMM for RS232
1. Press the Shift key, the 2ND
(Menu) key, then the Left key
until the I/O configuration
menu appears.
2ND
MENU
2. Press the Down key then
press the Left key until the
RS232 selection display
appears.
3. Press the Down key. The
RS232 Baud Rate selection
appears.
4. Press the Up or Down keys
to select the baud rate.

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Baud rate: 9600, 19200, 38400, 57600, 115200,
230400
5. Press the ENTER key to
confirm the RS232 baud rate.
6. Press the EXT key to get out
of the configuration mode.
When the DMM is turned off, the RS232
configuration will be lost.
3. Connect the
USB/RS232 cable
1. Connect the USB or RS232 cable to the rear panel
terminal (upper port) for USB or to the RS232 port
for RS232 connections.
CALKEY
USB
RS232
2. Connect the other side of the USB/RS232 cable to
the PC.

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Installation
Two items, the USB driver and DMM Viewer Software need to be installed
onto the PC in order to run the software properly.
Make sure the USB driver is installed first onto the PC if using USB.
1. Accessing the
CD-ROM
Open the CD-ROM menu. For details, see page 5.
2. Installing the
USB driver
If using RS232 rather than a USB connection,
this section (Installing the USB driver) may be
skipped.
1. Click on the Install USB Driver icon.
2. The USB driver file, USB_Driver.inf is shown in
the file explorer.
3. Configure the GDM-8261 I/O to
USB=ON.
Page 7
4. Connect the USB cable from the GDM-8261 rear
panel USB port to the host PC.
5. The GDM-8261 will be recognized as new
hardware. Follow the Windows Installation Wizard
to install the USB driver (USB_Driver.inf) from the
CD.
Note The PC may need to be restarted once the driver is
installed.
3. Installing DMM
Viewer
1. Click on the DMM-Viewer icon.
2. Click on the Install DMM-Viewer icon.

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3. The installation wizard will start up. Follow the
directions of the installation wizard. When choosing
an install location it is recommended that the default
location is chosen.
The default location of the software is C:\Program
Files\DMM Viewer
A
program icon should be
a
vailable from the Start
Menu.
Note To check the software version please see page 27.

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Uninstallation
Follow the procedures described in this section when the viewer software or
the USB driver needs to be updated or removed.
Uninstalling the
USB driver
To remove the USB driver, it must be uninstalled from
the Windows Device Manager.
1. Launch Device Manager from the Start menu.
StartControl PanelDevice Manager (XP,
Windows 7)
2. Double-click Ports (COM & LPT). Right-click
GDM8261 CDC (COMX) and choose the
Uninstall option.

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3. Select Delete the driver software for this device,
then press the OK button. The driver will uninstall
automatically.
Uninstalling the
Viewer software
1. From the Windows Start menu select the DMM
Viewer program directory and choose Uninstall.
2. Select Yes to uninstall the product.
3. The Uninstaller will automatically finish the
uninstallation.

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Configuration
1. Configure the
PC
1. To make sure the DMM is recognized by the PC,
open the Device Manager (Start > Control
Panel > (System) > Device Manager. If using
USB, the USB driver, GDM8261 CDC, should be
listed in the Ports section.
2. Check which COM port the USB driver/RS232
connection is assigned to.
3. To see the baud rate of the connection, right click
the GDM8261 and select Properties.
4. Click the Port Settings tab and note the baud rate
of the connection.
2. Configure DMM
Viewer
1. Activate DMM Viewer.

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2. Click on the Setting(O)
menu and open the settings
dialog. Enter the default
settings as detailed below. For
more information on
configuring Sample Rate and
Recording, see the
measurement chapter on
page 17.
COM PORT: according to the Device Manager
Baud Rate: 115200 (Or the baud rate set above)
Test Speed: 500 ms
Record 1 in every: 1 measurement
Test Time: Continuous
3. Click on the Test Link button. The viewer
software and the GDM-8261 will try to establish a
connection (success), or an error message appears
(fail). If the connection is successful, a pop-up
message will return the model type, serial number
and firmware version.

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Success Fail
4. Click on OK to save and leave the
Settings screen.
5. Move on to Measurement (page 17).

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MEASUREMENT
1. Establish
remote
connection
Follow the procedures for connection and
configuration on page 7.
2. Select
measurement
item
The front panel keys on the GDM-8261 and the DMM
V
iewer software are the same.
Press the measurement keys just like on the GDM-8261
front panel.
A
ny changes in DMM Viewer will be reflected on the
DMM.
For details on how to measure, please see the
GDM-8261 user manual.
Normal
measurements
(Viewer software: dBm) (GDM panel: dBm)
/
dBm
3. Start
measurement
A
fter selecting the measurement type, click on the
START button to start the measurement. The result is
updated in real time in the display as well as in the data
field.
START key
Display

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Data field
4. Stop
measurement
Click on the START button again to stop the
measurement. The button color changes from red to
black.
START key
Configuration 1. Click Setting(O)from the drop
down menu.
The Setting dialog panel appears.
Test Speed 2. In the Test Speed drop down selection menu
choose the sample rate in milliseconds, from 25ms
10000ms.
Record Rate 3. Choose the record rate from the Record 1 in
every drop down selection menu. You can choose
to record from 1 in every 1 to 1 in every 600
measurements.

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Test Time 4. Choose the duration of the measurement (in
minutes) from the Test Time drop down selection
menu. You can choose from continuous or .5 to
1440 minutes. Measurements will cease after the
allotted time has elapsed from when the Start
button is pressed.
If Continuous is selected then the measurements
will continue until the Start button is pressed again.
5. Click OK.
Simulate (test)
measurement
item
To view (simulate) how each measurement item works
w
ithout actually operating the DMM, the Random
Data function will input random data into DMM
V
iewer to test the software functionality.
The Random Data function will be disabled if the
DMM is connected. To use the Random Data
function any instrument must be disconnected from
the operating PC or turned off.
1. Check the Random Data
checkbox
Now that Random Data has been checked, DMM
V
iewer will function as if the multimeter is connected.
There is no need to configure any connection settings.
Note Only the primary display mode will have random data.
You cannot test the secondary display for random data.
Random data will fill the display panel and data field at
the sample rate selected in the Setting menu.

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Command Plane The Command Plane will display any changes to the
Test Speed, Record Rate or Test Time.
Clear Text from
the Command
plane
Click Clear Text in the Command
Plane menu to clear the text box.