This article describes the principle,application and maintenance of the TU-1221 UV-VIS recording spectro photometer. The analysis and handling method for common faults(for example, error code “NG1, NG2, NG8, NG9”) of the instrument are introduced as well as.
This paper introduced the application and test and adjustment of programm-able controller used in the coal handling system for a power plant, and expounded the machine error code in course of testing and adjusting and the method of debugging.
With the engineering background,the method of realizing 53 digit data flow coding,encoding and error code correction are introduced based on ISE platform VHDL language design. The method utilizes parallel processing,having a super processing ability,low complexity and a super engineering application potention.
By the use of the synthetic procedures,we have designed some SDSC which structures are very simplified,such as that the error code detecting circuits consists of only 22 MOS transistors and 8421BCD 10 counter consists of only 31 MOS tramsisters.
The error code trasfer produced by baud rate error in computer asynchronous serial communication is analysed and calculated in this paper,On this basis the permissible limit of the baud rate error is enacted.