12.8.4 GPS Clock
Receiver:
12 channel GPS C/A-code receiver
Accuracy
Depends on oscillator option:
of pulse outputs:
< +-100 ns (TCXO, OCXO LQ)
< +-50 ns (OCXO-SQ, -MQ, -HQ, -DHQ)
Synchronization Time:
Max. 1 minute in normal operation mode,
approx. 12 minutes after a cold start
Antenna
——————————————————————————
Antenna Cable:
shielded coax
Cable Length:
max. 300 m to RG58,
max. 700 m to RG213
Antenna Connector:
BNC female
Input GPS:
Antenna circuit
1000 V DC insulated
Local Oscillator
to Converter Frequency:
10 MHz
1
First IF Frequency:
35.4 MHz
1
1) these frequencys are
transfered via the antenna cable.
Power Requirements:
15 V, 100 mA (via antenna cable)
Figure right:
GPS Receiver and
GPS with XHE-SPI Connector (optional)
LED Indicators
Init:
blue:
while the receiver passes through
the initialization phase
green:
the oscillator has warmed up
Nav.:
green:
positioning successfully
Ant:
red:
antenna faulty or not connected
yellow:
the clock is synchronized by an external Signal - MRS mode (PPS, IRIG ...)
Fail:
red:
time has not synchronized
30
Date: 21st August 2019
IMS-M4000
