SPO Technology Introduction for Siglent SDS2000 Series Oscilloscope

Nov. 27, 2013 - PRLog -- SDS2000 Series oscilloscope uses Siglent-innovated waveform acquisition and graphics processing engine which supports up to 110,000 wfm/s capture rate, 256 levels intensity grading and color temperature display, with deep memory storage and the use of new digital trigger technology supports rich trigger types and precise trigger. All of these technologies are collectively known as SPO (Super Phosphor Oscilloscope) technology.

Features of SPO technologies

1. Up to 110,000wfm/s waveform capture rate

In the traditional digital storage oscilloscope, waveform data processing and display are completed within the CPU. CPU is the bottleneck of the entire data acquisition, processing and display. To start the acquisition of next frame, there will be a large section of time between every two frames to wait for the CPU need complete the processing of the previous frame.  The dead time of traditional digital storage oscilloscopes is very long. The occasional glitches are difficult to be captured by oscilloscopes as they are easily fallen into the dead time. With Siglent-innovated waveform acquisition, image processing engine, using FPGA group to complete the processing and display of waveforms, it greatly reduces the dead time between two frames in SPO oscilloscope. In SDS2000 platform, at 50ns time base, you can achieve up to 110,000 wfs/s waveform capture rate. Compared with the traditional oscilloscope in the same time base which can do about 200wfs/s, and the same level of mainstream products like 50,000 wfs/s waveform capture rate, the SPO technology of SDS2000 series oscilloscope can help you capturing the occasional glitches and abnormal signal quickly. It will greatly improve your work efficiency.

2. 256 levels intensity grading and color temperature display

3. Deep memory depth storage

The SPO engine supports external DDR3 RAM to achieve deep memory depth storage. In SDS2000 platform, it can support single-channel 14Mpts memory depth, when operating in two-channel interleaved mode, support 28Mpts memory depth.

4. Digital trigger function

1) Precise trigger

Traditional digital storage oscilloscopes use analog trigger technology. The SPO engine implements digital trigger system by using of a digital comparator and digital TDC. It overcomes the above-mentioned shortcomings of the analog trigger circuit completely. It achieves a high trigger sensitivity and low trigger jitter. At the same time, you can improve waveform capture rate as the quick response of digital TDC.

2) Timing trigger accuracy to1ns

Digital comparator is used in digital trigger in SPO engine. The comparison accuracy can be reached as 1ns, especially for some trigger types which support timing, such as pulse width trigger. This can not be achieved for oscilloscopes using analog trigger technology.

3) Precisely set trigger delay, configurable trigger noise suppression

4) High stability trigger circuit, independent from temperature change

5. Various trigger types

SDS2000 trigger types based on SPO engine:

Edge, Pulse width, Window, Runt, Interval, Drop Out, Pattern, Video；

6. Serial decode/trigger functions

Serial protocol：IIC，SPI，UART/RS232，CAN，LIN

7. Hardware based Pass/Fail function

Based on hardware Pass/Fail function, you can achieve rapid detection and counting for Fail frame. You can also stop acquisition once Fail frame detected and issue Failed signal at the same time.