Nmea Depth, Wind Speed, Temp And Sog Trend; Vhf Digital Selective Calling; Interfacing - Standard Horizon CP300I Owner's Manual

12.8 NMEA DEPTH, WIND SPEED, TEMP AND SOG TREND PAGES
When the GPS Chart Plotter is connected to the Optional FF520 50/200kHz BLACK BOX
FISH FINDER or a Digital Depth Sounder, Wind Speed/Direction, Speed Log with Temp
with NMEA output the GPS Chart Plotter is capable of show Trends in the data from the
device.
To select a NMEA Trend Page:
1. Press [MENU]. Move the ShuttlePoint knob to highlight NMEA DISPLAY and press
[ENT].
2. Move the ShuttlePoint knob to select DEPTH TREND, WIND SPEED TREND, TEMP
TREND or SOG TREND and press [ENT].
12.9

VHF DIGITAL SELECTIVE CALLING

Digital Selective Calling is a semi-automated method of establishing a VHF radio call. DSC
had also been designated as part of the Global Maritime Distress and Safety System
(GMDSS). It is planned that DSC will eventually replace aural watches on distress
frequencies and will be used to announce routine and urgent maritime safety information
broadcasts.
This new system allow mariners to instantly send a distress call with GPS position (when
connected to the transceiver) to the US Coast Guard and other vessels within range of the
transmission. DSC will also allow mariners to initiate POSITION Request, POSITION Send
calls to or from another vessel equipped with a DSC transceiver.
STANDARD HORIZON VHF Marine Radios with Digital Selective Calling are able to be
interfaced with the GPS Chart Plotter which feeds GPS data to the VHF and listens for DSC
calls from the VHF. By connecting a few wires between the STANDARD HORIZON VHF and
the GPS Chart Plotter it will receive:
1. a vessel that has transmitted a DSC Distress call
2. a vessel that has transmitted a DSC Position Send Call
3. The position of a vessel that transmitted a DSC Position Request Call

12.9.0 Interfacing

To take advantage of these functions the GPS Chart Plotter must be interfaced (wired) to
a STANDARD HORIZON or compatible DSC VHF.
Page 76
Figure 12.7 - NMEA Data page
GPS Chart Plotters