Spectracom SecureSync User Reference Manual page 510

APPENDIX
SBS : Word begins at index count 80. Seventeen Straight Binary Coded elements occur
with a position identifier between the 9th and 10th binary coded elements. Least significant
digit occurs first.
Pulse rates:
Element identification: The "on time" reference point for all elements is the pulse leading
edge.
Reference marker, 1 per second. The reference marker appears as two consecutive pos-
ition identifiers. The second position identifier marks the on-time point for the succeeding
code word.
Resolution:
Carrier frequency: 1 kHz when modulated.
C.F. Element # Digit #
50
51
52
53
54
55
56
57
58
59
60
494
Element rate: 100 per second.
Position identifier rate: 10 per second.
Reference marker rate: 1 per second.
Index marker (Binary 0 or uncoded element): 2 millisecond duration.
Code digit (Binary 1): 5 millisecond duration.
Position identifier: 8 millisecond duration.
Pulse width coded signal: 10 milliseconds.
Amplitude modulated signal: 1 millisecond.
Function
1 Space
2 Space
3 Space
4 Space
5 Space
6 Time Sync Status
7 Space
8 Space
9 Space
PID P6 Position Identifier
10 Years Units Y1
SecureSync User Reference Guide