Raymarine Ray215 manual Nmea Operation, Operation at Power Up

Operation with a Fist Microphone 3-13

3.3.16NMEA 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.