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3-13
Operation with a Fist Microphone
3.3.16 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. The optional Full
Function Handset enables you to manually input this data using the L/L
ENT function, as described in Section 4.5.3.2.
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.
Operation When the Signal is Lost or Becomes Invalid
If positional data that was previously detected becomes invalid or is no
longer detected, the radio monitors the NMEA line for 1 minute for it to
be restored.
If a signal is restored on the NMEA line and the radio determines the data
is valid, the data is input, the NMEA indicator remains illuminated, and
the radio re-enters normal operation mode.
However, if no signal is detected, the NMEA indicator flashes and a 5-
second-long staccato alert tone is emitted. The last received positional
data is retained in memory and can be viewed in the NAVSTAT screen.