Navico NSPL-500, User Manual

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Operation | NSPL-500 User Manual
Operation
Operation of the NSPL-500 is automatic and requires no user inter-
vention. During operation the antenna splitter will share signals
received at your VHF antenna with both the AIS transceiver and the
VHF radio.
When either the AIS transceiver or VHF radio transmits, the NSPL-500
will automatically sense the transmission and route the signal to the
antenna.
If both a VHF radio and AIS transceiver are transmitting at the same
time, the NSPL-500 will give priority to the VHF radio.
Warning:
It is not possible for both connected devices to
transmit simultaneously using a single VHF antenna. When
talking on the VHF radio, AIS position reports are not transmitted.
Indicator functions
The NSPL-500 includes three colored indicators as shown in Figure
10. The state of the indicators provides information regarding the
status of the NSPL-500.
Fig. 10 Indicator lights
Indicator lights
Green
(Power)
Red
(Error)
Green
(AIS)
Green
(VHF)
Figure 10 Indicator location on the NSPL-500 unit
The indicators provide the following functions:
•
Power - this indicator is illuminated whilst the unit is powered
•
Error - this indicator illuminates when antenna has short or open
circuit generated by VHF transmission at 25 W
•
TX AIS - this indicator flashes to indicate AIS transmissions
•
TX VHF - this indicator flashes to indicate VHF radio transmissions
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