Specifications

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Nav Screens
This option allows you to remove the navigation screens
that you do not need from the navigation screen sequence
that you scroll by pressing NAV repeatedly (see page 143).
When selecting this option, you are asked to turn off or on
each of the available navigation screens. Tap “Off” for all
these screens that you are not currently using. Note that
the Map screen cannot be turned off.
You must cycle
through all the screens in order to save any changes to the
On/Off status of any screen
.
Coord System
This option allows you to define a primary coordinate sys-
tem, and also a secondary coordinate system if you need
one.
By defining a coordinate system, you tell ProMark3 how
the calculated coordinates should be expressed. For exam-
ple, if you choose Lat/Lon, all coordinates will be expressed
as angles (latitudes and longitudes) and if you choose UTM
or any other system, coordinates will all be distances
(Northings and Eastings) from the chosen origin.
When you select the Coord System option from the Setup
menu, ProMark3 asks you to specify which system you
want to define (primary or secondary). Tap one. In the list
that appears, tap the coordinate system you want to use.
Depending on your choice, ProMark3 may then ask you
additional information:
- If you select Lat/Lon, you are then asked to select the
display format (DEG/MIN.MMM, DEG/MIN/SEC.SS,
etc.)
- If you select any system other than Lat/Lon or UTM,
you are asked to choose a scaling factor for displaying
position coordinates: 1 meter, 10 meters or 100
meters. If you choose 1 meter, a northing coordinate
will be displayed as, for example, 249143N. If you
chose the 10-meter factor, the same coordinate will be
displayed as 24914N. And if you select the 100-meter
factor, the coordinate will be displayed as 2491N.
- For some systems, you are asked to supply information
on grid zones or types