Raymarine Ray215e Digital Selective Calling DSC, Operation When No Signal Detected for 4 Hours

3-16 Operation with Minimum Function Handset

However, if no signal is detected, the NMEA indicator flashes and a 5- second-long staccato alert tone is emitted. The NMEA indicator continues to flash until valid positional data is received. If valid positional data (from the same source) is later restored, the NMEA indicator is again displayed solid.

Operation When No Signal Detected for 4 Hours

If no valid positional data is received or input manually using the Full Function Handset within 4 hours of the previous alert, the NMEA indicator continues to flash and the staccato alert tone is again emitted. This pattern is repeated every 4 hours if no positional data has been detected. If no manual input was made during the previous 23.5 hours, all the position fields are set to 9’s and the time and date fields are set to 8’s.

3.5.18Digital Selective Calling (DSC)

The Digital Selective Calling (DSC) protocol is a globally applied system used to send and receive digital Distress calls as well as Individual and All Ships calls on channel 70, the dedicated DSC channel for Marine VHF. For a Distress call transmission, your RAY215E takes the position and time information from the input NMEA data along with your Maritime Mobile Station Identifier (MMSI) and converts it into a digital “packet”. When transmitted, this digital information lets other ships and shore stations equipped with appropriate DSC equipment know where you are and that you are in a Distress situation.

In the RAY215E, Class “D” DSC functionality is enabled by installing an optional Full Function Handset. This can be in the form of Single Station (Raymarine part number E46020) that replaces the Minimum Function Handset or as a Dual Station (Raymarine part number E46022) that, when used in conjunction with a Minimum Function Handset, enables intercom functions between the two stations.

Note: DSC functions are enabled only when an optional Full Function Handset has been installed. If no Full Function Handset is attached, none of the following features will operate.

Communications in DSC mode include the following:

1.Transmitting/Receiving an Individual Call

2.Transmitting/Receiving an All Ships Call

3.Transmitting/Receiving a Distress Call (without designating type)

4.Receiving a Distress Relay Call (without designating type)