SERTEL T-GPS-300, Руководство по эксплуатации

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Geo-version : output 1 (DCF code or minute pulses) may be programmed to
operate on the
internal quartz time base only , without automatic corrections by GPS. GPS information is
then obtained from output 2, and used for compensating the quartz oscillator drift.
Output 2, "F. Code" , open collector, max 35 VDC, 500 mA, with the following Ssgnals :
ƒ
In normal operating mode (permanent receiver operation) : "Fast Code" time code
format (specifications on request). This fast code is not available when an RS-232 or
RS-485 format is used (menu selection).
ƒ
Output 2 in low power mode (geo-version) : slow code, bits are synchronous with output
1, giving time comparison between internal time and GPS time. This code is useful
together with the
DCF code operating on the internal quartz time base : it allows to
correct for the drift of the quartz time base. The coding is as follows :
Slow code "Time comparison between internal time and GPS time, based on latest GPS
Reading" (geo-version) :
Bits 1 to 12 : milliseconds of GPS time at time T (BCD-coded : 4 bits for every digit).
Bits 13 to 19 : seconds of GPS time at time T.
Bits 21 to 41 :
time T = time of the last GPS reading = bits 21 to 41 of output 1 when the
last GPS reading as made (at the full minute).
Bits 42 to 48 : minute of GPS time (local time) at time T.
Bits 49 to 54 : hour of GPS time (local time) at time T.
Bit 56=1 for normal high precision mode; =0 for power saving low precision mode.
Bit 57=1 : DCF code synchronized when GPS available; =0 : DCF code on quartz time
base.
ƒ
OMEGAFACE code (option) : fast code compatible with OMEGAFACE code (repetition
rate 1 code/minute, bit length 0.02 second, 1600 Hz modulation).