Nmea Out Set Up; Cursor Echo - Raymarine Raychart 320 Owner's Handbook Manual

4-6
Auto Mode
If Auto mode is selected, the value of variation is obtained automatically,
normally from received data. The variation value that is used depends on
the data available, and is selected in the following order of priority:
1. Variation value from the same source as the heading data:
2. Variation value from a different source:
3. A calculated variation value, using position data, if no SeaTalk or
4. The current manual variation value, if no SeaTalk or NMEA value
Manual Mode
If MANUAL mode is selected, by pressing either of the MANUAL soft keys,
the local variation value can be specified according to the area in which
you are operating. Press the appropriate MANUAL soft key to adjust the
variation up or down, to a maximum of 30° East or West.
This value is then transmitted to any other SeaTalk instruments on your
system. It is retained if you turn the display off and on again.
In Manual mode, incoming NMEA variation is ignored. However, if the
variation is changed on another SeaTalk instrument, the new value is
used and the manual value that is displayed is updated.
Note:
up a value if variation is not available from an external source.

NMEA OUT Set Up

Each NMEA sentence can be set to either OFF or ON individually. The
factory default is ON for each sentence.

Cursor Echo

You can set up your system so that radars, plotters and chartplotters
connected via SeaTalk can display each other's cursors.
If heading data is being taken from NMEA, then variation is also
taken from NMEA.
If heading is taken from SeaTalk, then SeaTalk variation is used.
If heading data is being taken from NMEA, but no NMEA variation
is available, then variation is taken from SeaTalk.
If heading is taken from SeaTalk, but no SeaTalk variation is avail-
able, then variation is taken from NMEA.
NMEA value is available.
and no position data is available.
The Manual variation value defaults to 0°, so it is important to set
Raychart 320 Chartplotter