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4-18 Operation with a Full Function Handset
To start Tri-Watch mode, select the Working Channel then press the FUNC
key followed by the MON/TRI key. The Working Channel appears on the
7-segment display, the Priority Channel appears on the right-most portion
of the dot matrix display, and the Weather Channel appears on the left-
most portion of the dot matrix display.
To end Tri-Watch mode at the current channel, press the MON key or the
CLR key. If Tri-Watch mode is initiated at Channel 70, the operation is
cancelled and an error alert tone sounds.
4.4.15 NMEA Operation
The RAY215 can receive valid position and time information, which are
transmitted during a DSC Distress call. This data can be communicated via
NMEA 0183 from a GPS, fishfinder, radar, or any device that outputs GPS
sentences. If the radio does not detect the positional data, it provides
different alerts urging you to find and correct the fault or manually input
the data using the radio’s L/L ENT function, as described in section 4.5.3.2.
Current valid positional data, whether from external device or manually
input, can be viewed using the NAVSTAT Operation described in section
4.5.2.
If a GPS device is not connected via NMEA, the radio emits a 5-second-
long staccato alert tone and flashes the NMEA indicator 2 minutes after
power up. This occurs every time the unit is turned on. The alarm is required
by safety regulations and cannot be disabled.
Operation at Power Up
At power up, the radio monitors the NMEA line for 1 minute. If a signal is
detected on NMEA, the radio determines whether the data is valid. If valid,
the data is input, the NMEA indicator is displayed on handsets, and the
radio enters normal operation mode.
If no GPS signal is detected on NMEA after the 1 minute monitoring period,
a 5-second-long staccato alert tone is emitted and the NMEA indicator
flashes. All the position fields are set to 9’s and the time and date fields are
set to 8’s. The message NO GPS appears in the NAVSTAT screen, although
no positional data is displayed.
If at a later time valid data is received on NMEA, the data is input, the
NMEA indicator is displayed solid (no longer flashing), and the radio
enters normal operation mode.