2008•Electrical Measurement & InstrumentationRequires access

Design of virtual digital oscillograph based on USB bus

Chen Shi-ju

Abstract

The text introduces the design scheme and developing way of dual-channel virtual digital oscilloscope based on USB bus.First it introduces the design of hardware circuit which is mainly composed of high-speed data acquisition card,dual-port data cushion and USB2.0 interface.Then firmware program,virtual instrument software panel and application are designed with the tools of C51 and VC++.The maximum sampling frequency of this oscilloscope is 100MSPS.It has virtual value,average value,peak value measurement and the function of memory.And it also extends the function of frequency analysis.

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Available abstract

Key concepts: USB, Oscilloscope, Firmware, Computer hardware, Oscillograph, Computer science, Interface (matter), Digital storage oscilloscope