Seatex AIS 100 Instruction Manual, rev. 5
Troubleshooting
94
to be short-circuited. Measure between centre conductor and shield.
Resistance should be close to 0 Ohm.
Note!
Switch off the power before disconnecting the antenna.
9.1.4
GPS receiver failing
If the mobile station does not compute position data and the GPS lamp
on the front of the mobile station does not light green, the GPS PPS
pulse is not being received and the GPS receiver inside the mobile
station should be checked. Disconnect the antenna cable at the rear
side of the hardware unit. The voltage output on the GPS antenna
connector should be approximately 4.8 – 5.0 V and indicates that the
GPS receiver supplies voltage to the antenna. If not, this indicates
problems with the GPS receiver. Disconnect and connect power (a
few times) and see if the mobile station starts up as normal. If not,
consult Seatex for advice.
9.1.5
VHF transceiver failing
If the VHF antenna and antenna cabling is OK and the MSG lamp on
the front of the mobile station does not light green and amber vice
versa, this indicates incorrect data reception on AIS channel 1 and 2.
Disconnect and connect power (a few times) and see if the mobile
station starts up as expected. If not, consult Seatex for advice.
9.2
External data interface problems
External data connections may be incorrect:
•
Data input from main GPS source
•
Heading from vessel heading sensor
9.2.1
Data input from main GPS/GNSS source
Position data output from the AIS mobile station is generated from the
vessel main GPS/GNSS receiver and received into the AIS unit using
serial line communication. If data is missing into the AIS mobile
station, the following steps should be taken in order to check for
missing position data:
•
Check that cable connections are correctly terminated in the
connection box (terminal screws 19 to 27).
•
If properly connected, check the serial line communication (baud
rate, parity, number of bytes transmitted, number of stop bits)
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Страница 113: ...Seatex AIS 100 Instruction Manual rev 5 Index 105 Voyage Data 13 14 21 85 VTS 3 W warranty 27 Z Zone 17 18...
