Arbitrary Waveform Generator Interface System And Software Design

The general signal source, represented by the function/arbitrary waveform generator, is one of the most widely used general instruments in the modern testing field. Given the abilities of generating all kinds of ideal and not ideal signals, it has been widely used in the domains of communication, radar, navigation and astronavigation.In the light of"the 100MSa/S arbitrary waveform generator", a project undertaken by the University of Electronic Science and Technology of China, this paper focuses on"the interface design of arbitrary waveform generator", expounding the concepts of USB communication, WDM driving structure and so on. Some technical ways have been put forward, through analyzing the realization of some kinds of interface and the key technical difficulty which should be surmounted. On the basis of hardware design of interface, author presents the HID-USB firmware structure and the design of Windows application software, and then gives a set of specific design steps. Finally, to counter those problems occurred during the debugging and testing process, author makes a deep analysis and gives some practical settlements.The main attributions of the paper include:1. Give a clear explanation of the working process of the arbitrary waveform generator interface and the functions of its circuits. The design of the interface circuit has been finished, including the decisions of the MCU type and other parts such as keyboard and LCD, make a plan for the connection of instruments.2. Go into one question in particular, that is the design of monitor software. Through the C51 language, it makes many functions come true, including the distinction of the keycode, indication of LCD screen, dispose of the input-and-output data, management of the interface like serial port and I2C bus, and make a development on firmware which confirm to the standard HID-USB class.3. Application software for Windows has been developped by Microsoft VB, so...