Meinberg GPS163AHS, Руководство по эксплуатации

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GPS163xHS features
The GPS163xHS is designed for mounting on a DIN rail. The front panel integrates five
LED indicators, a hidden push button, an eight-pole terminal block, two DSUB- and two
BNC-connectors. The receiver is connected to the antenna/converter unit by a 50
Ω
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coaxial cable with length up to 250 m. It is possible to connect up to four receivers to one
antenna by using an optional antenna diplexer.
The navigation message coming from the satellites is decoded by GPS163xHS´s
microprocessor in order to track the GPS system time with an accuracy of better than ±1
µsec. Compensation of the RF signal´s propagation delay is done by automatical
determination of the receiver´s position on the globe. A correction value computed from
the satellites´ navigation messages increases the accuracy of the board´s TCXO to ±5
.
10
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and automatically compensates the oscillators aging. The last recent value is restored
from the battery buffered memory at power-up.
Time zone and daylight saving
GPS system time differs from the universal time scale (UTC) by the number of leap
seconds which have been inserted into the UTC time scale after GPS has been initiated in
1980. The current number of leap seconds is part of the navigation message supplied by
the satellites, so GPS163xHS´s internal real time is based on UTC.
Conversion to local time including handling of daylight saving year by year can be
done by the receiver´s microprocessor if the corresponding parameters are set up with the
help of the software GPSMON32 (included Windows software).
Pulse outputs
The pulse generator of the satellite controlled clock GPS163xHS containes three
independant channels and is able to generate a multitude of different pulses, which
are configured with the software GPSMON32.
The active state of each channel is invertible, the pulse duration settable between 10
msec and 10 sec in steps of 10 msec.
In the default mode of operation the pulse outputs are disabled until the receiver has
synchronized after power-up. However, the system can be configured to enable those
outputs immediately after power-up.
The pulse outputs are electrically insulated by optocouplers (option: PhotoMOS
relays) and are available at the terminal block.