Nmea Operation - Raymarine Ray215e Owner's Handbook Manual

3-15
Operation with Minimum Function Handset
3.5.17

NMEA Operation

When an Optional Full Function Handset is installed enabling the Class
"D" DSC functionality, the RAY215E 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
position data, it provides 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 4.7.3.2.
Note: NMEA position data can be communicated only when an optional
Single or Second Station Full Function Handset, enabling Class "D"
DSC functionality, has been installed.
If a GPS device is not connected via NMEA, the radio emits a 5-second-
long staccato alert tone and flashes the NMEA indicator 1 minute after
power up. This occurs every time the unit is turned on. The alarm is required
by safety regulations and cannot be disabled. However, the NMEA
indicator will not light nor will the alert tone sound if no Full Function
Handset is installed.
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 accepted and the NMEA indicator is displayed on the
LCD.
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.
If at a later time valid data is received on NMEA, the data is accepted and
the NMEA indicator is displayed solid (no longer flashing).
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 accepted and the NMEA indicator returns to a solid
state (not flashing).