DESIGN OF DECODER FOR IRIG-B TIME CODE

摘要

Among the Inter Range Instrumentation Group (IRJG) time codes, IRIG-B is most popular worldwide. Most of the digital clocks provide this time code as an output. This time code can be transmitted over a long distance, and needs to be decoded and displayed. Transmission can be as potential free contacts or as radio signals. The present paper describes the design of a microprocessor based IRIG-B time code decoder and display unit, designed specially to decode and display time of the day from Standard Time and Frequency Signals (STFS) transmitted from National Physical Laboratory, New Delhi, via INSAT satellite for the hundred odd users all over the country.