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6.4 Time code outputs
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6.4.2 Generated Time Codes
The internal time code generator may be congured to produce various pulse width modulated 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 :
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:
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:
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 )
6.4.3 Code generation
In the default mode of operation the IRIG/AFNOR timecode outputs are disabled until the GPS-receiver has been
synchronized after power-up. Due to that the generation of the IRIG-code only starts after synchronization.
If the code must be available immediately after power-up, the software GPSMON32 can be used to enable
the time code output without synchronization of the GPS-receiver by setting the enable ag 'pulses' to 'always'.
In this mode of operation the IRIG-code is not locked to UTC-second until synchronization.
GPS164
Date: 27th January 2016
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Содержание GPS164-LQ/PPFO-3/REL-1/DAHS
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