System measures timing errors between signals produced by three asynchronous time-code generators. Errors between 1-second clock pulses resolved to 2 microseconds. Basic principle of computation of timing errors as follows: central processing unit in microcontroller constantly monitors time data received from time-code generators for changes in 1-second time-code intervals. In response to any such change, microprocessor buffers count of 16-bit internal timer.
System Measures Errors Between Time-Code Signals
NASA Tech Briefs ; 17 , 9
1993-09-01
Miscellaneous
No indication
English
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