Programmable high-frequency digital signal generator

Abstract

Disclosed a programmable high frequency pulse signal generator comprises: a computer connects the port of DSK plate whose minor plate slots are connected to the outlet of ADC, the outlet of transceiver, the first DAC inlet and the inlet of D trigger; wherein, said inlet of ADC is the inlet of said programmable high frequency pulse signal generator; the outlet of trigger connects the second DAC; the outlets of first and second DAC are connected to the accumulator; the inlet of main power amplifier is connected to the inlet of accumulator while its outlet is the main outlet of said programmable high frequency pulse signal generator; the inlet of auxiliary power amplifier is connected to the outlet of D trigger while its outlet is the reference outlet of said programmable high frequency pulse signal generator; and the another end of transceiver is the trigging end.

Description

technical field [0001] The invention relates to a signal generator, in particular to a programmable high-frequency digital signal generator, which is mainly suitable for various devices requiring signal input such as digital communication, digital measurement and diagnosis, and automatic control. Background technique [0002] In the prior art programmable arbitrary digital signal generator (application number: 93207151.1), such as figure 1 As shown: the device takes 8031 ​​single-chip microcomputer 02 as the core, including keyboard and display 01, clock circuit 03, external trigger input circuit 04, waveform data memory 05, waveform length controller 06, frequency synthesizer 07, address generator 08, and D / A data converter, namely DAC09. When the device is working, 8031 ​​generates arbitrary waveform data and writes to figure 1 The waveform data memory 05, and then read out or directly read out the periodic waveform data from the waveform data memory 05, and finally rea...

AI Technical Summary

Problems solved by technology

[0003] 1) The structure of the device is complicated, the integration degree of the expansion circuit is low, and it is difficult to upgrade and expand;

[0004] 2) The data addressing range of 8031 ​​is limited, and the table capacity is not high; the number of data bus bits is low, and the output signal accuracy is low; the instruction cycle is not short enough, and the operation speed is slow; the bus structure is not conducive to data processing, and the instruction efficiency is poor. Significant difficulties in signaling;

[0005] 3) The device does not provide a reference output terminal of the same waveform or a different waveform reference signal that is strictly synchronized with the output signal or has a certain fixed delay time;

[0006] 4) The device does not provide signal modulation function

[0007] 5) The output of the DAC is not connected to the power amplifier and low impedance output circuit, so it is not convenient to directly connect to the load

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