
© Satmap Systems Ltd
© Satmap Systems Ltd 2014
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4.8 Primary 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 rst displayed when
switching on the unit (unless there is already
a map card inserted in which case the unit will
briey 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 gure. 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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