A Method of Improving Signal Capture Ability of Digital Oscilloscope

Abstract

Signal capture is one of the hot spots in electronic test. As the representative of testing instrument, the signal capture ability of digital oscilloscope is normally judged by the waveform capture rate. Unilaterally improving signal acquisition ability whereas ignoring the improvement of waveform imaging mechanism and display effect can not increase the oscilloscopes waveform capture rate in real sense. Aiming at better ability of signal acquisition and waveform display effect of oscilloscope, this paper is committed to analyzing the improved structure of oscilloscope and conducting the real-time waveform imaging with hardware coprocessor array, and then studying the imaging mechanism of special 3D waveform and the impact of waveform display on waveform capture rate. In this way, the signal capture ability of oscilloscope is greatly improved and the effective waveform capture rate as high as 1,000,000 wfms/s is realized.

Simple Timing Signal Analysis Device-XY Mode Displays the Multichannel Shift Waveform

“…Through testing for many times, can be displayed on the oscilloscope and 8 digital signal sequence, can adjust 8-way digital signal timing the triggering time of the waveform, can choose different trigger mode, can add the manual displacement time marker on the screen, with eight LED display time line 8 digital signals of corresponding time status, to 8 road logic state of the digital signal acquisition and storage, and on the oscilloscope playback two displacement cycle 8-way digital signal. However, there are some individual display waveforms and manual cursor display that cannot achieve absolute "horizontal, horizontal and vertical", because the D/A conversion output has A certain drift, and the D/A conversion output cannot achieve absolute linearity [6] .…”

Corrosion Detection of Reinforcement of Building Materials with Piezoelectric Sensors

“…A waveform generator 11 (33500B series, Keysight) was applied as a pulse generator to excite the ultrasonic sensor to produce the corresponding ultrasonic pulse wave. A digital oscilloscope 12 (RTB2000, Rohde & Schwarz) was used to collect the ultrasonic signal of the sensor and upload it to the computer for further analysis.…”