The GDS-1000A-U series provides a unique solution. The GDS-1000A-U lineup includes GDS-1152A-U, GDS-1102A-U and GDS-1072A-U three models. Operating at 150, 100 or 70 MHz with a real-time sampling rate of 1GSa/s, the GDS-1000A-U employs MemoryPrime technology . Using MemoryPrime technology, the GDS-1000A-U is able to overcome the problems associated with memory constraints. High sample rates, rarely found in traditional DSOs, can be maintained over longer periods of time, without effecting performance.
Coupled with the high resolution 5.7” color TFT display, with user-friendly interface USB device and host port make the GDS-1000A-U series feature-rich. Furthermore, the GDS-1000A-U series provide a lifetime warranty program!
PictBridge Printer Supported
The GDS-1000A-U is one of the few DSOs currently on the market that provides complete remote control or data capture over an USB interface. The GDS-1000A-U Series also supports PictBridge, allowing you to print directly to your printer without complex configuration. After connecting to a PictBridge compatible printer with an USB cable, printing is as easy as pressing a button.
Fast Horizontal Position Mark and Search
MemoryPrime technology allows a maximum of 2M points of waveform data. For engineers, analyzing a considerable amount of data can be an extremely challenging task. To assist engineers to analyze waveforms quicklier, we provide Horizontal Page Skip and Set Time Mark functionalities, letting engineers take full advantage of the 2M memory depth.
A built-in Autoset function on a digital oscilloscope gives engineers remarkable convenience. With the complexities of product features, traditional auto measurement information is inadequate for modern measurement needs. The new Cursor Gating feature allows you to mark an area with cursors for auto measurement.
There is a diverse range of test probes currently on the market such as passive, differential, and electrical probes. The attenuation ratio of each probe type also differs greatly. To ensure compatibility, probe attenuation ratios of 0.1X to 2000X as well as voltage and current probes are supported by the GDS-1000A-U.
ABOUT MemoryPrime TECHNOLOGY
What is the single feature lacking from most digital storage oscilloscopes? Adequate memory depth. Is the memory depth of your DSO large enough?
With 2M points of memory, the GDS-1000A-U has the capability to acquire far more waveform data compared to other DSOs in the same performance range.
The 1GSa/s sampling rate and 2M point memory play an extremely powerful role for single-shot waveform capture. Properly set the trigger conditions to baby-sit the expected waveform. When the single-shot waveform is triggered and captured, you are able to check and see the single-shot event without losing any detailed information. A DSO, with high sampling rate but short memory, can't do the job of single-shot waveform capture as well as the GDS-1000A-U.
EASY TO USE
Full-featured acquisition mode and 27 auto measurement functions help users to measure the parameters of captured waveforms accurately. The advanced Auto-Set function enables GDS-1000A-U Series to catch waveform automatically and display waveform quickly. With Arithmetic functions, +, -, x ,FFT ,FFTrms and Zoom FFT. GDS-1000A-U Series keep users aware of the measurement results by updating values immediately. Without almost extra calculation, GDS-1000A-U can provide sufficient information of testing.
OBSERVATION-DELAY ON/ OFF
For the convenience of waveform observation and analysis, the GDS-1000A-U includes Delay On/Off functions usually available only in the higher end products. With Delay On, a signal can be observed from an offset of the trigger point. This feature allows the horizontal scale and the waveform scale to be expanded and centered on the delay point rather than the trigger point, allowing a signal to be observed in detail where needed.
OBSERVATION-EXPAND BY GROUND/CENTER
In a DSO, "AC Coupling" is normally used to isolate the AC components of a signal by blocking the DC components. This is useful to see a signal with a small AC component that is offset with a large DC voltage. With AC coupling to block the DC voltage, small AC waveforms can be observed from the center of the screen for measurement or examination. However, capacitive loading under AC coupling mode may cause waveform distortion as low frequency components become degraded, an effect that needs to be avoided in frequency critical applications. The Expand by Ground and Center functions are convenient tools to expand a waveform vertically. With this feature, the vertical scale of a waveform can be expanded either from the ground reference or from the center of the screen without causing capacitive loading.
FFT / FFTrms and Zoom FFT measurement
The FFT math function on a digital storage oscilloscope is often used to observe the fundamental and harmonic components of a signal. Typically the traditional unit of the FFT is a decibel (dB). However in the use of dB, it is difficult to identify the fundamental frequency of a signal from a noisy spectrum sometimes. With the FFTrms function, the GDS-1000A-U series can clearly display the fundamental frequency of an acquired waveform.
With the FFTrms function ,the GDS-1000-A-U series can clearly display the fundamental frequency of an acquired waveform.Zoom FFT provides users with observation flexibility that they can move FFT waveform horizontally and zoom it up to 20X to investigate details of FFT signal.
PC REMOTE CONTROL SOFTWARE
Using a USB port coupled with FreeWave remote monitoring software is the easiest and most convenient way to capture data from the GDS-1000A-U. With FreeWave, a screenshot can be saved as an image file (.bmp/.jpg), waveform data(.csv) can be logged, and movie files(.wmv) can be recorded in real-time. Not only can FreeWave monitor and record waveforms over a long period of time, but previously recorded waveforms can also be observed. Instrument settings can even be configured without the need to learn incomp rehensible command line syntax. With the simple user interface and robust features, FreeWave allows you to get the most out of the GDS-1000A-U with little effort.
PictBridge Printer Supported
USB host function enable user to store waveform setting ,data or image on USB flash disk.Forthermore ,data logger can continue monitoring input signals and storing their waveform data in USB flash disk when trigger conditions are met ,saving users' effort to tracking signals manually and allowing them to analyze and observe waveform data afterwards.
Go/NoGo testing function check whether the incoming signal violates the user-defined template.Users can easily define this template by setting the tolerance ratio to determine violation conditions.Go/NoGo testing can either keep counting violation number or stop testing when violation conditions are met.
By providing the Global Lifetime Warranty Program for the GDS-1000A digital storage oscilloscope series, we believe you can have the same confidence as we do in the quality of each GDS-1000A-U DSO. By purchasing a GDS-1000A-U you can be assured of a highly economical, low maintenance, quality DSO backed with the protection of the LifeTime Warranty program. The Lifetime Warranty Program guarantees customers will be supported regardless of their location. Customers will receive at least 5 years of full support even after production has ceased. For more details and applicable conditions regarding the LifeTime Service program, please visit the GW Instek website www.gwinstek.com/llw or consult your nearest distributor.
5.7" TFT LCD Color
Number of Channel
1GSa/s (RTS) 25GSa/s (ETS)
2mV/div ~ 10V/div
Time Base Range
1ns/div ~ 50s/div
Input Impedance Selection
Panel Setup Memory
Battery Power Operation
AC 100V ~ 240V
More product information please see the download page.
User manual x 1, Power Cord x 1
Probe GTP-070A-4 or equivalent : 70MHz (10:1/1:1) Switchable passive probe for GDS-1072A-U (one per channel) Probe GTP-100A-4 or equivalent : 100MHz (10:1/1:1) Switchable passive probe for GDS-1102A-U (one per channel) Probe GTP-150A-2 or equivalent : 150MHz (10:1/1:1) Switchable passive probe for GDS-1152A-U (one per channel)
Optional Accessories GSC-006 Soft carrying case GTL-110 Test lead, BNC-BNC heads GTL-246 USB 2.0 A-B type cable
150MHz, 2-Channel, Digital Storage Oscilloscope
100MHz, 2-Channel, Digital Storage Oscilloscope
70MHz, 2-Channel, Digital Storage Oscilloscope
The USB Driver of GDS-300/200, GDS-3000/2000A/1000A-U/1000-U/2000E series
Freewave software for Windows 8 and Windows 7
Freewave V3.21 compatible with Win XP, Vista and Win7
GDS-1000A-U's LabVIEW driver 8.6
Manuals & Guides
Firmware Upgrade Guide
The firmware update guide of GDS-1000A-U / GDS-1000-U.
The user manual of GDS-1000A-U Series.
Quick Start Guide
The Quick Start Guide of GDS-1000A-U series.
GDS-1000A-U Series User manual
Programming Manual for GDS-1000A-U
Quick Start Guide
Quick start guide for GDS-1000A-U
Freewave user manual
Brochure & Datasheet
The datasheet of GDS-1000A-U Series.
GDS-1000A-U Series Data sheet
GDS-1000A-U Series Brochure
How it is defined between Real-Time and Equivalent-Time?
The frequency bandwidth of digital oscilloscope differs with sampling method. There are two type of sampling methods: Real-Time Sampling (RTS) and Equivalent-Time Sampling (ETS). The sampling method which the oscilloscope obtains as many samples as possible from one triggered acquisition is called the Real-Time Sampling method. The real-time sampling method is targeted at observing single-shot waveforms, which appear only once. A waveform is sampled at a constant rate, and the results are stored in memory & displayed on the LCD screen. The equivalent time sampling method is used for observing repetitive waveforms. This method stores a repetitive signal ample-by-sample in memory based on different trigger points and displays the signal after reconstructing the original waveform. This method achieves results equivalent to waveforms digitalized at a higher frequency than the maximum sampling frequency using the real-time sampling method, thus achieving a larger frequency bandwidth which is limited by the analog circuit.
What will the requirement of computer configuration to run Freewave?
Freewave software is available to operate on XP ,Vista ,Windows 7 and Windows 8’s PC.
For XP ,Vista and Windows 7’s PC ,please install Freewave V3.21 ;
For Windows 7 or Window8’s PC ,please install Freewave V3.22 or later.
Required software for Freeewave V3.21
• Microsoft. Net Framework full version 4.0 or later.
• Microsoft Visual C++ 2010 Redistributable Package(x86)
Required software for Freeewave V3.22
• Microsoft. Net Framework full version 4.5 or later (for Windows 7 only)
• Microsoft Visual C++ 2010 Redistributable Package(x86)
(Note The NET 4.5 is built-in in the Windows 8, so user doesn’t need to install again.)
What is main feature of Freewave?
Users can remotely observe signals; retrieve waveform data and direct tests via Freeware. Image file (.gif/.png/.bmp/.jpg/.tif) or waveform information (.csv) can be selected for log format. In the meantime, long memory information retrieving for GDS-1000A-U and GDS-2000A can also be achieved by using the software.
Are the two channels also isolated between each channel on GW Instek Digital Storage Oscilloscope?
All of the DSO ,including GDS-1000-U/ 2000A and 3000 Series are common ground design for each channel, not isolated between each channel.
How to check the GDS-1000A-U series system information or firmware version?
See UTILITY --> F4 (System Info)
Is it possible for the GDS-1000A-U Series oscilloscope using Freewave software to automatically save a screen shot to a PC via the USB interface every trigger event or on a fixed interval such as 1 per second for an unlimited duration or until the hard drive is full?
The Freewave is general software. GW Instek only provides this tool to users an easy way to capture the measurement data from PC for further analysis. Any special or dedicated operation, User can program by themselves on their platform. We provide all the commands on user manual for user reference.
We are interested in your digital scopes and would like to know, how the roll mode looks like. Is it like the most recent measured value is shown on one end of the screen, pushing the "history" to the other end? or is the measured value slowly moving across the whole screen, overwriting the "history"?
On an oscilloscope, roll mode is a method of displaying acquired waveform data without waiting for the complete waveform record. For example, if a sweep was 10 divisions long with a rate of one second per division, and roll mode wasn’t available, it would take 10 seconds to fill the waveform record. But using roll mode, the oscilloscope will immediately begin displaying results rather than waiting the full 10 seconds.
When operator enables the "roll mode", the waveform continuously moves data across the display from right to left and old data will be replace by new input data. It allows you to see dynamic changes on low frequency.
I am looking for a service manual/calibration procedure for this oscilloscope. My scope is showing a slight difference in frequency and voltage when tested against a very accurate and stable frequency/voltage source. Hope you can help.
All the GDS series scope provide “self-calibration” function for customer self-checking and adjustment firstly. Before doing this, we suggest the environment must under following situation for the stability.
1,The calibration should be performed under room temperature 26 ± 5 ºC, and humidity should be less than RH 80%.
2,The instrument should be power on for at least 30 minute warm before performing calibration.
Furthermore, if the accuracy is still out of spec after “self-calibation”, Please call GW’s local sale-representative or channel for further help.
I am using the GDS-1102A-U, and am unable to find a way of jumping to the next peak in the math FFT mode. How do I a) zoom in on a given bandwidth and b) jump the cursors to the next peak?
Even though the scope can do FFT like spectrum, but GDS can do each peak search as the way of spectrum’ operation.
Users can change the “Source” to “MATH”, then use “Variable” knob the search each peak values.
What is a frequency range of FFT in GDS-1000A-U?
The frequency range basically will base on the bandwidth of oscilloscope, but the high frequency will be attenuated by the amplifier in oscilloscope.
Can I connect a converter from USB to LAN in real panel of GDS-1000A-U / GDS-1000-U series oscilloscope for remote control?
No, the USB port in the GDS-1000A-U and GDS-1000-U is a device port and can’t support such configuration.
Every time I change the time scale > 100 ms/div on my GDS-1052-U. I found I can’t see the whole waveform? Why?
When the sweep speed is too slow, the oscilloscope will enter to “Roll Mode” and you should see the horizontal line (waveform) movies form right to left gradually. In the roll mode, the waveform data will display immediately without waiting for complete waveform record. For GDS-1000-U series, if the sweep time is large and equal 250ms (≥250ms/div), the scope will switch roll mode automatically.
For example, if sweep was 10 divisions with a rate of one second per division. In “Main Mode”, It would take 10 seconds to fill the waveform record. But using “Roll mode”, the oscilloscope will immediately begin displaying result rather than the full 10 seconds. This mode is very useful to see the information for low frequency waveform.
What can I do if I cannot see my test signal on the Oscilloscope?
All the GW digital oscilloscope provides a reference square signal with 2Volts amplitude at 1kHz. You can hook the probe on reference signal and press “AutoSet” button, the oscilloscope will auto detect the signal and display the signal on the screen with the best scale on time and amplitude.
If workable as previous operation, Re-connect your signal again and try “Autoset” button again. If you still not get your signal, Please contact GW Instek local distributor for further assistance.
What interface I can use it to remote control on GW GDS series oscilloscope?
The available interface depends on the model of GDS series.
For GDS1000-U/GDS1000A-U, USB is the only interface for remote control.
For GDS2000A series, USB port and RS-232C are standard interface but GPIB/Lan is optional.
For GDS3000 series, USB port, RS-232C, and Lan port are standard interface but GPIBis optional.
We use GDS-1152A-U measure any square wave signals (we have tried with 1KHz to 25MHz, with known rise and fall times of ~ 2ns), the scope reports excessively large rise and fall times ~ 50ns. This result is out of your spec. Could you explain what reason for this result?
The system total rise time (Scope + probe) can be done with this formula: Tr SYSTEM2 = Tr PROBE2 + Tr SCOPE2, and also can drive the responded bandwidth by Tr =0.35/BW. On the other words, the measurement bandwidth is not only effected by the scope but also be limited by the probe. Basically, if customer want fully use all the bandwidth of the scope, the probe bandwidth should always equal or exceed the bandwidth of the scope. Using a probe of lesser bandwidth will limit the oscilloscope to less than its full measurement capability.
Difference types of probes with different attenuation could result big difference of rise time. As you can see the following probes specification, The rise time for all our probes is 58ns for X1 probe attenuation, but value change from 1.4ns to 5.8ns for X10 probe attenuation for different probe. This could bring the result as customer’s claim.
Could you explain the how to verify the bandwidth accuracy and the rise time as the description on GW specification for GDS-1000A-U series.
1. The system total rise time (Scope + probe) can be done with this formula: Tr SYSTEM2 = Tr PROBE2 + Tr SCOPE2, and also can drive the responded bandwidth by Tr =0.35/BW. Since it’s not easy to directly measure the rise time of each unit, Usually we measure bandwidth firstly, then use previous formula to get the rise time.
(3), Probe model: GTP-250A-2, attenuation position set to 10X, bandwidth from DC~250MHz
From the bandwidth definition, the waveform amplitude at -3dB point will be attenuated to 70.7% that means the waveform will occupy 4.242 divisions on the screen. In the test 2 experiment, we can observe the amplitude occupy 5 divisions for 300mV on the screen as picture 4.
As the result, GW GDS-1152A-U has no doube with 150 MHz bandwidth as we advertise and also provide more spare bandwidth
3, The rise time of this configuration can be derived out as following result.
Bandwidth= 150MHz è Tr =0.35/BW= 0.35/150MHz = 2.3ns