Software v3.0.9915
© Satmap Systems Ltd 2015
27
4.8 Screen 8: GPS STATUS
Access GPS STATUS screen
(GPS MAP/PLANNING → POSITION INFO → TRIP
LOG → MAIN MENU → COMPASS → SHARED
DATA → GPS STATUS)
This is the screen that is first displayed when
switching on the unit (unless there is already a map
card inserted in which case the unit will briefly show
the Map Packs screen.
The elliptical diagram represents the sky above you
where North is the top of the ellipse. Satellites visible
to the unit are allocated numbers and also shown on
the bar chart. Yellow bars indicate the unit can see
a satellite. The bars change to orange when the unit
has acquired a lock. There are also indications of
Signal to Noise Ratio (Av SNR and Max SNR).
Before acquiring a lock, details of your last known
position, with time, date, and grid reference are
shown at the top of the screen. (Grid reference
format options are given in GPS Settings, ‘Position
Display Format’).
Once you have a lock, your current coordinates and
elevation are shown. As a guide, a minimum of four
satellites are needed to acquire a lock.
To access the GPS STATUS screen from the GPS
MAP screen, keep pressing the Primary Screens
button (front right button) until you reach the GPS
STATUS screen.
The signal indicator (either red cross or green signal
icon) indicates the strength of signal received by
the unit. The GPS indicator caption at the bottom
of the screen either says ‘Acquiring GPS’ or gives
accuracy to within a certain distance.
If the unit is receiving a poor signal e.g. under
wet tree canopy, it may only be able to give two
dimensional data, i.e. no elevation data. Under
these circumstances the elevation caption at the
top right of the screen will show ‘2D’ instead of an
elevation figure. The signal received icon at the top
left will also show a single green crescent plus ‘2D’.
Buttons:
GPS Map
Return to GPS MAP
Primary Screens
Go to PLANNING screen and scroll through primary
screens
Signal
indicator
Satellitesʼ
atomic
clock time
Maximum
Signal to
Noise Ratio
Average
Signal to
Noise Ratio
(SNR)
GPS Status
GPS Map
Primary
Screens
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