National Instruments PXI-6683 Series - Page 53

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Appendix B IRIG Protocol Overview
19 Position identifier P
2
20 to 23 Units of hours
25 to 26 Tens of hours
29 Position identifier P
3
30 to 33 Units of days
35 to 38 Tens of days
39 Position identifier P
4
40 to 41 Hundreds of days
49 Position identifier P
5
50 to 53 Units of year or control function bits
55 to 58 Tens of year or control function bits
59 Position identifier P
6
60 to 68 Control function bits
69 Position identifier P
7
70 to 78 Control function bits
79 Position identifier P
8
80 to 88 Nine lowest significant bits of time of day in straight binary seconds
(bit 80 -> 2
0
… bit 88 -> 2
8
)
89 Position Identifier P
9
90 to 97 Eight most significant bits of time of day in straight binary seconds
(bit 90 -> 2
9
… bit 97 -> 2
16
)
99 Position identifier P
0
Note: Bits not listed are index markers, and are sent as binary zeroes.
Table B-3. IRIG-B Bit Assignments (Continued)
Bit position Information transmitted