GW Instek GDS-1000-U Series User manual

Digital Storage Oscilloscope
GDS-1000-U, GDS-1000A-U, GDS-2000A, GDS-3000 Series
Freewave Installation & User Guide
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.
Freewave is free for single non-commercial use. Commercial use of
the software is strictly prohibited without authorization from Good
Will company.
Use the software at your own risk. Good Will accepts no liability for
any damages, either as a direct or indirect consequence of the use of
this product.
Good Will Instrument Co., Ltd.
No. 7-1, Jhongsing Rd., Tucheng Dist., New Taipei City 236, Taiwan

TABLE OF CONTENTS
3
Table of Contents
Getting started ................................................. 5
Overview .............................................................................6
Types of Operations ............................................................7
Monitoring the Oscilloscope Display ....................................7
Standard Memory Length Data Capture................................8
Remote Controlling the Oscilloscope..................................11
Long Memory Length Data Capture ....................................11
Installing Freewave......................................... 13
Required Equipment..........................................................13
Install Required Software ..................................................15
Installation Steps ..............................................................16
Installing the Software Package ...........................................16
Connecting the Oscilloscope and Verifying Connectivity ...20
Manually Installing the USB Driver .....................................22
Repairing/Uninstalling Freewave .......................................26
Monitoring the Oscilloscope.......................... 27
Viewing the Oscilloscope Display Contents .......................28
Viewing the Oscilloscope Virtual Panel .............................30
Taking a Snapshot of Display Contents..............................32
Taking a Video Clip of the Display Contents(GDS-1000-U
and GDS-1000A-U only) ....................................................33
Printing Out Display Contents...........................................34
Short Memory Data Capture........................... 35
Viewing Oscilloscope Waveforms ......................................35
Saving Waveform Data.......................................................40
Recalling Waveform Data...................................................41
Using the Commands..................................... 42
Preparing a Command List ................................................42
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4
Configuring and Running the Commands ..........................45
Saving a Command List and its Result...............................47
Long Memory Data Capture (GDS-2000A/ GDS-
1000A-U Only) ............................................... 48
Viewing Long Memory Oscilloscope Waveforms ................48
Saving Waveform Data.......................................................51
Recalling Waveform Data...................................................52

Getting started
5
GETTING STARTED
Freewave supports the GDS-1000-U, GDS-1000A-U, GDS-2000A and
GDS-3000 series oscilloscopes and is freely available to all customers.
Freewave can transfer full screen images, video, or waveform data
from an oscilloscope to a PC via a USB connection. The software
display is updated in real-time from the host oscilloscope. Images
and movie clips can also be saved onto the PC. Images can be
printed directly to a printer.
For data analysis, Freewave is able to capture raw waveform data
from the oscilloscope and display it on the PC screen. Waveforms
can be saved in CSV format to be reused in other applications.
Freewave can also record long memory or standard memory length
waveforms with the GDS-1000A-U and GDS-2000A series.
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6
Overview
Applicable
oscilloscope
•GDS-1000-U
•GDS-1000A-U
•GDS-2000A
•GDS-3000
Applicable OS •Windows XP (32 bit)
•Windows Vista (32 bit)
•Windows 7 (32 bit, 64 bit)
•Windows 8 (32 bit, 64 bit)
Main features •Updates the oscilloscope display in real-time,
allowing remote observation.
•Virtual Panel operation
•Records oscilloscope images.
•Records video clips to a PC (GDS-1000-U and
GDS-1000A-U only)
•Captures digital waveform data in CSV format.
CSV is viewable and editable in most
spreadsheet applications. (standard and long
record lengths)
•Automatically loads remote commands,
supports command lists, running commands
and saving results to a PC.
•Supports fast USB 2.0 connections and captures
the oscilloscope display in almost real-time.
•Automatically recognizes the oscilloscope
hardware and configures the channel number
and remote control commands accordingly.
•Prints out snapshots of the oscilloscope display.
Inverting the background color is also available.

Getting started
7
Types of Operations
Four types of operations are available in Freewave: Standard
memory length display monitoring, data capturing, and remote
controlling, long memory length data capturing.
Monitoring the Oscilloscope Display
The oscilloscope display contents appear in the Freewave screen in
real-time. You may store a snapshot image or video clip into the PC,
and invert the background color for better viewing. Snapshot images
can also be printed out. The oscilloscope monitor can be switched
between the Freewave screen and a simulated oscilloscope display.
When using the simulated display, all oscilloscope functions and
controls are available on a virtual oscilloscope panel.
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8
Standard Memory Length Data Capture
Standard memory length data can be directly transferred to the
Freewave screen. Up to 10 waveforms can be captured at any one
time for analysis. All waveforms can be zoomed and panned as well
as positioned vertically.

Getting started
9
Waveform data as well as the oscilloscope identification can be
stored as a Comma Separated Values (*.csv) file which can be
opened and edited by a spreadsheet application such as Microsoft
Excel.
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10

Getting started
11
Remote Controlling the Oscilloscope
Freewave automatically categorizes and lists the remote control
commands. To run the commands, users only have to pick and place
them on the list; no manual typing is required. The result can be
stored in CSV format.
Long Memory Length Data Capture
Freewave can take advantage of the long memory length of the
GDS-1000A-U and GDS-2000A series oscilloscopes. Waveform data
can be arbitrarily zoomed and panned with ease. Cursors can be
placed on the screen to accurately view measurements. Like the
standard memory length data capture, long memory data can be
saved as a *.csv file to be recalled at any time.
Freewave Manual
12

Installing Freewave
13
INSTALLING FREEWAVE
The installation process includes preparing the
necessary equipment, installing the software
package to the PC, and confirming the
connectivity.
Required Equipment
The following list shows the necessary hardware and software for
installing and running Freewave.
Item Requirements
Oscilloscope •GDS-1000-U
•GDS-1000A-U
•GDS-2000A
•GDS-3000
Freewave package
•Version 3.21 (for Windows XP or Windows 7)
•Version 3.22 (for Windows 7 or Windows 8)
Required software
for Freeewave
V3.21
•Windows XP or Windows 7 (32 or 64 bits)
•Microsoft. Net Framework full version 4.0 or
later.
•Microsoft Visual C++ 2010 Redistributable
Package(x86)
Required software
for Freeewave
V3.22
•Windows 7 or 8 (32 or 64 bits)
•Microsoft. Net Framework full version 4.5 or
later (for Windows 7 only)
•Microsoft Visual C++ 2010 Redistributable
Package(x86)
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Note The NET 4.5 is built-in in the Win8, so user doesn’t
need to install again.
USB driver •Version 1.03 or above
USB cable •USB 2.0, type A (PC) – type B (oscilloscope)

Installing Freewave
15
Install Required Software
•Microsoft .Net (full version 4.0 or later) and Microsoft Visual C++
2010 Redistributable Package (x86) are required to use some of the
Freewave functions for PCs with a 32 or 64 bit OS
•Microsoft .Net and Microsoft Visual C++ 2010 Redistributable
Package (x86) can both be downloaded for free from the
Microsoft website.
1. Click on the Control panel>Add or remove program option. The list
of installed programs will appear. Check if Microsoft .NET is
installed.
2. If Microsoft .NET (full version 4.0 or later) is not appropriately
installed, download and install the latest versions from the
Microsoft website.
http://www.microsoft.com/download/en/details.aspx?displayl
ang=en&id=17718
3. If Microsoft Visual C++ 2010 Redistributable Package (x86) is not
appropriately installed, download it from the Microsoft website.
http://www.microsoft.com/en-
us/download/details.aspx?id=5555
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16
Installation Steps
Follow these steps to properly install Freewave:
•Download and install the software package.
•Connect the oscilloscope to the PC.
•Verify the connection and operation.
Installing the Software Package
1. Unzip the software package into an installation directory.
2. Activate setup.exe. if a dialog box appears for the Microsoft .Net
(full version 4.0 or later) framework.
3. When a dialog box appears for installing FreeWave, click the

Installing Freewave
17
Next button to proceed.
4. Select the directory in which Freewave is to be installed. Click
Next.
•To change the directory, click on the Browse button and select
another directory from the directory map.
•To calculate the occupied space, click on the Disk Cost button. A
separate dialog box will appear, showing the disk space required
for Freewave and the entire space in the drive.
•To control the software accessibility, check “Everyone” or “Just
me”.
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18
5. Click on the Next button again to start the installation.

Installing Freewave
19
6. When the installation is completed, click on the Close button to
complete the process.
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20
Connecting the Oscilloscope and Verifying Connectivity
1. Power the oscilloscope up.
2. Select the USB interface by pressing the Utility key, followed by
F5 (More). Then, press F4 (USB Port) repeatedly until Computer
is selected.(GDS-1000A-U and GDS-1000-U only)
3. Connect the USB cable between the oscilloscope and PC.
GDS-1000-U, GDS-1000A-U USB
slave port
GDS-2000A, GDS-3000 series USB
slave port

Installing Freewave
21
4. Activate Freewave. If the oscilloscope ID appears on the screen,
Freewave is ready for operation.
5. If the oscilloscope ID does not appear in the initial
display, click on the Scan (binoculars) icon to
manually search for the oscilloscope. If this still
fails, follow the instructions in the next section,
“Manually Installing the USB Driver”.
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22
Manually Installing the USB Driver
1. Open the Control Panel in the PC and activate the System icon.
2. Select Device manager.
In Windows XP, select the
Hardware tab and activate the
Device Manager.
In Vista, select Device Manager
from the side menu.
A

Installing Freewave
23
3. Locate the oscilloscope either in the “Port” node (correct) or in
the “Other devices” corner (incorrect).
Port (correct)
Other devices (incorrect)
•If the oscilloscope is correctly recognized (Port node), repair the
Freewave installation (page26).
•If the oscilloscope is incorrectly recognized (Other devices node),
follow the next step.
Note The COM port for the DSO should be set between
COM1 to COM20. If the COM port is greater than 20,
it can’t be detected by DSO.
4. Right-click on the oscilloscope name and select “Update Driver”
from the context menu. The driver installation dialog box should
appear.
5. Install the DSO driver from the Freewave install directory.
Freewave Manual
24
XP Vista
6. In the dialog box, select “No,
not this time” (not connecting
to Windows Update) and click
on the Next button.
In the “Update Driver
software – GDSXXXX”, select
the “Browse” dialog.
7. Next, select “Install from a list
or specific location” and click
on the Next button.
Click Browse and select the
Freewave installation
directory. Press Next.

Installing Freewave
25
8. Select the directory where Freewave is installed and click on the
Next button. The USB driver “dso_vpo.inf” will be installed.
Click Next.
9. Check the Device Manager again. The oscilloscope should now
be recognized in the “Ports” node as DSO.
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26
Repairing/Uninstalling Freewave
After installing Freewave, repairing or uninstalling Freewave is
possible using the same setup.exe file used to install the program.
Repair Repairs corrupted functions by reinstalling
Freewave. Select this function if Freewave starts
malfunctioning.
Remove Uninstalls Freewave from the PC.
1. Acitvate the setup.exe. A dialog box will appear.
2. Select Repair or Remove and click on the Finish button. Repair or
removal starts and finishes automatically.
3. When it is completed, click on the Close button to complete the
procedure.

Monitoring the Oscilloscope
27
MONITORING THE
OSCILLOSCOPE
The oscilloscope display contents appear in the Freewave screen,
allowing observing and recording the waveforms in analog form; for
capturing digital waveform points, refer to page27 “Monitoring the
Oscilloscope”. Here are the available operations.
•Viewing the oscilloscope’s display contents
•Taking a snapshot image of the display contents
•Recording a movie clip of the display contents
•Printing out the display contents
The Virtual panel is able to remotely control a connected DSO and
display the DSO contents back onto the Virtual Panel display. All
functions and operations that can normally be performed on the
DSO panel can be performed on the Virtual Panel.
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Viewing the Oscilloscope Display Contents
1. Connect the oscilloscope to the PC and activate Freewave. For
details, see page20.
2. Select the Image tab (second from the left).
3. Click on the Play button in the control panel.
The oscilloscope’s display contents will appear
on-screen.
Note The GDS-1000-U/1000A-U will continually send a
screen shot to the PC, while the GDS-2000A or GDS-
3000 will only send an initial screen shot once when
the PLAY button is clicked.
Pausing the
display
To stop updating the display, click
on the Pause button in the control
panel.
Operation log Control panel Date
Oscilloscope
display
View button

Monitoring the Oscilloscope
29
Note The pause button only applies to the GDS-1000-
U/1000A-U
Viewing in full-
screen mode
To view the display in full-screen
mode, click on the Full-screen
button in the control panel.
Note: to go back to the original
screen size, press the Space key, or
double click anywhere on the
screen.
Closing Freewave
To close Freewave, do one of the
following:
•Click on the Close button in the
control panel
•Press the Alt + F4 keys
•Click on the Close icon at the top
right corner of the screen.
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30
Viewing the Oscilloscope Virtual Panel
1. Make sure that the oscilloscope’s display contents appear in the
Freewave screen. See “Viewing the Oscilloscope Display
Contents”, page 28.
2. Click the View button to toggle the display.
Operation log Control panel Date
Oscilloscope
display
View button
Operating Panel
keys
Left clicking on any button in the
virtual panel will perform the same
operation on the DSO remotely.
Operating
Variable knobs
To use any variable knob, place the
mouse cursor over a variable knob
until the cursor changes to a scroll
arrow.

Monitoring the Oscilloscope
31
Use the mouse scroll wheel to scroll
the virtual variable knob.
Note To operate a variable knob without
a scroll wheel, click on the left or
right of the variable knob to scroll
anticlockwise or clockwise,
respectively.
Return to the
Freewave screen
To return to the Freewave screen
view, press the View button again.
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32
Taking a Snapshot of Display Contents
1. Make sure that the oscilloscope’s display contents appear in the
Freewave screen (both Play and Pause mode works fine).
2. Click on the Save button. A file save dialog box will
appear.
3. Select the file type and location and save the snapshot image.
File type GIF (*.gif)
J
PEG (*.
j
p
g
)
Bitmap (*.bmp) TIFF (*.tif)
PNG (*.png)

Monitoring the Oscilloscope
33
Taking a Video Clip of the Display
Contents(GDS-1000-U and GDS-1000A-U
only)
1. Make sure the oscilloscope’s display contents appear in the
Freewave screen, updated in real-time (Play mode).
2. Select the recording area by selecting either “Freewave Screen” or
“Oscilloscope Display” in the Video Recording Area panel.
3. Click on the Record button. Freewave
automatically starts recording the display contents.
4. To stop the recording, click on the Stop button
which will open a file save dialog box. Enter the file
name, select the directory, and save the video in the
*.wmv format.
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34
Printing Out Display Contents
1. Make sure the oscilloscope’s display contents appear in the
Freewave screen (both Play and Pause mode works fine).
2. Click on the Print button. A standard Windows
printout dialog box will appear.
3. Configure the printer and printout the oscilloscope
display contents.

Short Memory Data Capture
35
SHORT MEMORY DATA
CAPTURE
The Data Capture function in Freewave directly transfers standard
memory length waveform data (4k points) from the oscilloscope to
the PC. Captured digital waveform data is stored in CSV format.
CSV is compatible with most spreadsheet applications. The Data
Capture function is used to:
•View oscilloscope waveforms
•Save waveform data
Viewing Oscilloscope Waveforms
1. Activate Freewave and connect the oscilloscope to the PC. For
details, see page20.
2. Select the Data tab (second from the right).
3. Select the channel(s) from the Source panel on
the left side of the Freewave screen.
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36
4. Click on the Play button in the control panel.
Freewave captures the waveform data for a
single period and shows them in the screen.
Adding a new
waveform
Select a new channel (if necessary)
and click on the Play button again.
Each time the Play button is
pressed a new waveform is
captured and placed in the
Waveform Identification list.
Note: A maximum of only 10 waveforms can be added to the
waveform identification list.

Short Memory Data Capture
37
One waveform
Two waveforms
Hiding a
waveform from
the display
To hide a waveform, uncheck the
check box next to the waveform in
the Waveform Identification list.
The waveform data itself will not
be deleted.
1st channel on
1st channel off
Zooming in or
out
First, activate a waveform by
clicking on a waveform button
number.
When a channel is activated, the
waveform button will become
colored.
To zoom in, click on the Zoom In
(+) icon. To zoom out, click on the
Zoom Out (–) icon.
Freewave Manual
38
The on-screen waveform data points will be shown
under the oscilloscope display. Likewise the
Time/Division rate will also be updated.
Default (4,000 memory points)
Zoomed (1,250 memory points)
Vertically moving
a waveform
Click on the waveform ID and then
grab the short bar on the left side of
the display. Move the bar up or
down to change the waveform
position vertically.
(No.2 selected)
No.2 waveform moving down No.2 waveform moving up
Horizontally
moving a
waveform
(This operation is available only
when the waveform is zoomed in.)
Click on the Left or Right icon to
move the waveform horizontally.

Short Memory Data Capture
39
The waveform position will be shown under the
vertical position bar.
Deleting the
waveform data
To delete a waveform data, click on
the waveform ID and then click on
the Delete icon.
(No.2 selected)
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40
Saving Waveform Data
1. Make sure that the waveform appears in the Freewave screen.
2. Click on the Save button. A file save dialog box will
appear.
3. Select the file type and location and save the data. CSV data files
store the waveform data points as well as the oscilloscope
identification. Image data files store a snapshot of the waveform.
Data file format •CSV (*.csv)
Data file contents
•Manufacturer
•Serial number
•Saved Date
•Model name
•Firmware
•Waveform Data
Image file format
•GIF (*.gif) •JPEG (*.jpg)
•Bitmap (*.bmp) •TIFF (*.tif)
•PNG (*.png) •
When saving CSV data files, you will get the option to save as
“Fast” or “Detail” waveforms. Detail waveforms save the
amplitude and the time of each point relative to the trigger point.
Fast waveforms only store the amplitude data.
4. Choose Fast or Detailed and click OK.