When a device is connected to more than one source providing the same data, the user can
choose the preferred source. Before commencing with source selection make sure all
external devices and the NMEA 2000 backbone are connected and are turned on.
Auto Select
The Auto Select option looks for all sources connected to the device. If more than one source
is available for each data type, selection is made from an internal priority list. This option is
suitable for the majority of installations.
Manual source selection
Manual selection is generally only required where there is more than one source for the same
data, and the automatically selected source is not the one desired.
Group source selection
Multifunction displays, autopilot controllers, and instruments have the ability to:
•
Use data sources (for example position, wind direction, and so on) that all other products
on the network use, or alternatively use a data source independently from other units.
•
Globally change all displays over to a different source from any display. (This only includes
products set to Group mode.)
Ú
Note:
In order to enable group selection, the display must be set to Simrad group.
Devices with the Group set to None can be set to use different sources to those of the rest of
the network devices.
Advanced source selection
This allows the most flexible and precise manual control over which devices provide data.
Some data sources, such as those for fuel level, or engine RPM, can only be changed from the
Advanced menu. Occasionally Auto Select may not assign the desired source, which may be
corrected using the Advanced Source Selection. An example of this is where twin
installations with NMEA 2000 compliant engines are not programmed with unique instance
numbers. This means that the auto select feature cannot determine which engine is fitted on
the port and which is fitted on the starboard side.
Ú
Note:
The
Advanced
option is visible in multiple places - the bottom of the
Sources
list, and under each source category (for example, Compass). The latter shows a filtered
list that only relates to devices that output data relevant to the category.
Software Setup
| NSS evo3 Installation Manual
25
