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4-14 Raynav 300 GPS Plotter
D-GPS Mode
➤ To change the beacon selection mode:
Press the MODE soft key to toggle between AUTO and MAN modes; the
selected mode is highlighted and appears in the Set Up table.
In AUTO mode, the D-GPS is set to automatic and beacon selection is
made automatically by the beacon receiver.
In MANual mode, the user selected beacon and bit rate are sent to the
beacon receiver.
Beacon ID
This shows the Beacon ID of the beacon transmitter.
If no beacon has been locked onto, this item states NOT LOCKED.
Beacon Frequency
Both the menu item and associated soft keys show the currently used
differential beacon’s frequency in kHz.
In AUTO mode, this is the frequency received from the beacon receiver
and the soft keys are disabled and grayed out.
In MAN mode, this frequency is the user selected value which is sent via
SeaTalk/NMEA to the beacon receiver.
➤ To set a new beacon frequency manually:
Press the SET BEACON FREQUENCY soft key arrows to increment or
decrement the frequency in 0.5kHz steps.
The frequency range available is 287.5kHz to 325.0kHz.
Bit Rate
Both the menu item and associated soft keys show the currently used
differential beacon’s bit rate in bps.
In AUTO mode, this is the value received from the beacon receiver and the
soft keys are disabled and grayed out.
In MAN mode, this is the user selected bit rate which is sent to the beacon
receiver.
➤ To set a new bit rate manually:
Press the BIT RATE soft key repeatedly to toggle between the options
50bps, 100bps and 200bps.
Signal Strength and Signal to Noise Ratio
These items indicate the received signal strength and Signal to Noise
Ratio (SNR) in dB, received from the beacon receiver. If the display unit