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10.5 Generated Time Codes Page 19
10.5 Generated Time Codes
Internal timecode generator may be congured to produce various pulse width coded IRIG-B or AFNOR signals.
Codes can be output via the front panel bre optic ports FO1. . . FO3.
a) B002: 100 pps, DCLS signal, no carrier
BCD time-of-year
b) B003: 100 pps, DCLS signal, no carrier
BCD time-of-year, SBS time-of-day
c) B006: 100 pps, DCLS Signal, no carrier
BCD time-of-year, Year
d) B007: 100 pps, DCLS Signal, no carrier
BCD time-of-year, Year, SBS time-of-day
e) AFNOR (DC): Code according to NFS-87500, 100 pps, wave signal,
1kHz carrier frequency, BCD time-of-year, complete date,
SBS time-of-day, Signal level according to NFS-87500
f) IEEE1344(DC): Code according to IEEE1344-1995, 100 pps, AM sine wave signal,
1kHz carrier frequency, BCD time-of-year, SBS time-of-day,
IEEE1344 extensions for date, timezone, daylight saving and
leap second in control functions (CF) segment.
(also see table 'Assignment of CF segment in IEEE1344 mode')
g) C37.118(DC) C37.118(DC) Code acc. C37.118, 100 pps, no carrier, BCD time-of-year,
SBS time-of-day,C37.118 extensions for date, timezone, daylight
saving and leap second in control functions (CF) segment
( also see table `Assignment of CF segment in IEEE1344 mode' but
sign bit of local oset is inverted )
10.6 Selection of time code
The selection of timecode is done by the monitor software.
The unmodulated time code can be delivered as an active-high (default) or activelow signal by setting a jumper
on the board GPS170PCI into the appropriate position:
GPS170PCI Date: 12th July 2012 19