Pulse rates:
Element rate: 10 per second.
Position identifier rate: 1 per second.
Reference marker rate: 1 per 10 seconds.
Element identification: The "on time" reference point for all elements is the
pulse leading edge.
Index marker (Binary 0 or uncoded element): 20 millisecond duration.
Code digit (Binary 1): 50 millisecond duration.
Position identifier: 80 millisecond duration.
Reference marker: 80 millisecond duration, 1 per 10 seconds. The reference
marker appears as two consecutive position identifiers. The second pos-
ition identifier or reference marker is the on-time point for the succeeding
code word.
Figure 5-2: IRIG E time code description
Additional information
The beginning of each 10 second time frame is identified by two consecutive 80
ms elements (P
0
and P
R
). The leading edge of the second 80 ms element (P
R
) is
382 VersaSync User Manual
APPENDIX
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