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The radio menus | RS20 operator manual

Select COURSE to toggle between displaying in MAGNETIC or TRUE.

A true north heading is corrected for magnetic declination. A

magnetic north heading source must also output magnetic

variation data if the heading is to be displayed as a true north value.

Int speaker

Select to switch the radio’s internal speaker ON or OFF.

Incoming voice calls and audible DSC alerts are prevented, but key

beeps and alarms will still be audible.

Ext speaker

Select to switch the radio’s external speaker ON or OFF.

Incoming voice calls and DSC alerts are prevented, but key beeps

and alarms will still be audible.

GPS

MANUAL

Select MANUAL to enter a GPS position (and time) from another

source when radio is not receiving position data from an external

antenna, or no antenna is connected.

The manually entered GPS position can be used in DSC calls.

If POS Display is turned ON, the latitude and longitude are shown on

the screen with a preﬁx ‘M’ indicating manual entry.

¼ Note: The manual entry is automatically replaced when a real GPS

position is received via the NMEA 0183 or NMEA 2000 port, depend-

ing on the GPS SOURCE setting.

GPS SOURCE

Choose AUTO SELECT to pick the best GPS source visible on NMEA

2000.

Choose NMEA 0183 to have the radio listen for GPS data on it’s serial

NMEA 0183 input.

Any suitable NMEA 2000 position sources will also be listed

individually so they can be selected manually.

CHECKSUM

Select to toggle ON or OFF. When enabled, data will be ignored if

checksum does not match (ie no tolerance to data corruption).

Simrad RS20 User Manual

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