.100 Mhz, Digital Storage Oscilloscope Table Prototype And Trial

With the development of the electronic measuring technology, measuring technology is geared to automated, intelligent and network directions. Digital storage scopemeter as the important measuring apparatus is widely used in various fields. Now the technology of digital storage scopemeter is more advanced overseas, and occupies the great majority of market. So it is indispensable to develop digital storage scopemeter ourselves. Using the two sampling technologies: real-time sampling and random sampling, we will discuss these correlative problems in this paper: the design of data acquiring system, a novel fashion of display with no control chip etc. The main attributions of the paper include: 1. The design of data acquiring system. It is the key of the design of digital storage scopemeter.In this project, we adopt DSP+FPGA structure. For its great flexible and universal characteristic, we will design and develop a digital storage scopemeter based on this structure, which sampling frequency is 5 GSPS, bandwidth is 100 MHz. 2. The design of control circuit of LCD. Microchip controlling mode is in conventional display fashion, which will need a display control chip and a microchip. In order to reduce cost as low as possible, we use another novel method, designing timing circuit for LCD by FPGA to control the display of LCD. 3. Serial interface.We choose the MAX3111 of MAXIM.It is a universal asynchronous receiver/transmitter(UART), which can be compatible with SPI/QSPI/MICROWIRE.As connected to MCBSP of DSP directly,it can convert the synchronous data to asynchronous data and realize the communication between two microprocessors.