7
•
Verify that the green power LED on the antenna splitter is
illuminated.
•
Transmit using the VHF radiotelephone and verify that the red LED
on the antenna splitter marked ‘VHF’ is illuminated during the
transmission.
•
Wait for the AIS Transponder to transmit its first position report.
This is indicated by the red LED TX on the AIS Transponder
illuminating. During AIS Transponder transmissions the red ‘AIS’
LED on the antenna splitter will flash briefly. Class B AIS
transmissions occur once every 3 minutes if your vessel is
stationary.
3. Operation
Operation of the antenna splitter is automatic and requires no user
intervention.
•
During operation the antenna splitter will share signals received at
your VHF antenna with both the VHF Radiotelephone and the AIS
Transponder.
•
When either connected device transmits, the antenna splitter will
automatically route the transmission to the antenna.
•
VHF Radiotelephone transmissions (including DSC transmissions)
are given priority over AIS transmissions.
It is not possible for both connected devices to transmit
simultaneously using a single VHF antenna. Whilst you are
talking on your VHF Radiotelephone no AIS position reports
will be transmitted.
L
8
4. Troubleshooting
Problem
Solutions
Power LED not illuminated.
•
Check power supply
connections and fuse or
circuit breaker.
•
Check polarity of power
supply connections.
•
Check power supply
voltage.
‘VHF’ LED does not illuminate when
VHF Radiotelephone is transmitting.
Check the antenna output of the
VHF radiotelephone is connected to
the antenna splitter input labelled
‘VHF’.
‘AIS’ LED does not illuminate when
AIS Transponder is transmitting.
Check the antenna output of the AIS
transponder is connected to the
antenna splitter input labelled ‘AIS’.
Clicks or pops are heard from a
connected FM broadcast receiver.
This is normal and may occur during
VHF or AIS transmission.
VHF or AIS reception range is
reduced.
A very slight reduction in receiver
range is normal and due to the
insertion loss of the antenna splitter.
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