Safran VersaSync User Manual page 393

units. Elements 65 through 68 contain the binary equivalent of tens of
years. In keeping with IRIG formats, the least significant bit occurs first. All
unused Control Functions are filled with a space (Binary 0).
SBS: Word begins at index count 80. Seventeen Straight Binary Coded ele-
ments occur with a position identifier between the 9th and 10th binary
coded elements. Least significant digit occurs first.
Pulse rates:
Element rate: 100 per second.
Position identifier rate: 10 per second.
Reference marker rate: 1 per second.
Element identification: The "on time" reference point for all elements is the
pulse leading edge.
Index marker (Binary 0 or uncoded element): 2 millisecond duration.
Code digit (Binary 1): 5 millisecond duration.
Position identifier: 8 millisecond duration.
Reference marker, 1 per second. The reference marker appears as two con-
secutive position identifiers. The second position identifier marks the on-
time point for the succeeding code word.
Resolution:
Pulse width coded signal: 10 milliseconds.
Amplitude modulated signal: 1 millisecond.
Carrier frequency: 1kHz when modulated.
Table 5-33:
C.F. Element # Digit #
50
51
52
53
54
55
VersaSync User Manual
IRIG B control function field
Function
1 Space
2 Space
3 Space
4 Space
5 Space
6 Time Sync Status
APPENDIX
379