Description of irig-codes – Meinberg TCR170PEX User Manual
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Description of IRIG-Codes
The specification of individual IRIG time code formats is defined in IRIG Standard
200-98. They are described by an alphabetical character followed by a three-digit
number sequence. The following identification is taken from the IRIG Standard 200-
98 (only the codes relevant to TCR170PEX are listed):
character
bit rate designation
A
1000 pps
B
100 pps
1st digit
form designation
0
DC Level Shift
width coded
1
sine wave carrier
amplitude modulated
2nd digit
carrier resolution
0
no carrier (DC Level Shift)
1
100 Hz, 10 msec resolution
2
1 kHz, 1 msec resolution
3
10 kHz, 100
μsec resolution
3rd digit
coded expressions
0
BCD, CF, SBS
1
BCD, CF
2
BCD
3
BCD, SBS
BCD:
time of year, BCD-coded
CF:
Control-Functions (user defined)
SBS:
seconds of day since midnight (binary)