TIME ENCODER

Authors
  1. Gauthier, F.
Corporate Authors
Defence Research Establishment Ottawa, Ottawa ONT (CAN)
Abstract
The circuit was designed and produced to record every minute, on film, a time code having a duration of 1 second; this time code, known as the "NASA Time Code" is continually repeated every second. The circuit must also be able to record synchronization pulses every 100 milliseconds for the portion of the minute not used by the time code. The combination of these two signals is applied to two light-emitting diodes so as to convert electrical data into usable optical signals. The technical note provides a detailed description on the operation of the time encoder. A technique employed to simulate the time code with the aid of a PDP-11 mini-computer is also presented and is necessary to verify the proper operation of the circuit.
Report Number
TN-79-18 —
Date of publication
15 Aug 1979
Number of Pages
51
DSTKIM No
80-00206
CANDIS No
124914
Format(s):
Hardcopy;Originator's fiche received by DSIS

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