Datum bc632D, Руководство пользователя

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INTRODUCTION
Datum Inc bc632D Wall Mount LED Display (Rev A) 1-3
1.3 TIME CODE FORMATS
The widespread use of coded timing signals to assist in the correlation of intercept and test data began in
the early 1950's. These signals can be decoded in real time to indicate the current
Time of Day (TOD) or recorded along with intercept/test data on magnetic tape recorders for post
processing and time correlation.
Hundreds of time code formats were developed - one for each agency involved. During the early
1960's the InterRange Instrumentation Group promoted a series of “standard” time code formats now
loosely referred to as “IRIG Time Codes.” The bc632D decodes four of these formats: IRIG A, IRIG
B, 2137, and NASA 36.
More complete details on these and other time code formats are available free of charge, on request
from either Bancomm Division or Datum Inc in the form of the Datum Inc, Handbook of Time Code
Formats. Figure 1-1 illustrates a frame of IRIG A, B or G time code.