Meinberg GPS165, Руководство пользователя

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5 GPS165 Features
5 GPS165 Features
The GPS165 is designed for mounting on a DIN rail. The front panel integrates eight LED indicators, an
terminal block, two DSUB and three BNC-connectors. The receiver is connected to the antenna/converter unit
by a 50 Ohm coaxial cable with length up to 300 m (when using RG58 cable). It is possible to connect up to
four receivers to one antenna by using an optional antenna diplexer. Additional outputs are described below
The navigation message coming from the satellites is decoded by GPS165’s microprocessor in order to track the
GPS system time with an accuracy of better than +- 100nsec. 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
± 5x10
-9
and automati-
cally compensates the oscillators aging. The last recent value is restored from the battery memory at power-up.
5.1 Time Zone and Daylight Saving
GPS system time differs from the universal time scale UTC (Universal Time Coordinated) 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 GPS170SV´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. As standard the switchover times are set to the values of the European Union (Central Europe).
The Manual describes how parameter setting for other locations is done. It is possible to deactivate the auto-
matic switching to/from daylight saving.
GPS165XHS Date: 5th November 2019 17