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The GPS 150 is designed to allow the user to obtain satellite information at any
time to monitor signal strengths and relative accuracy of the position information the
receiver is calculating. This is especially helpful when you might be experiencing a
problem with low signal levels due to poor coverage or installation problems.
To obtain receiver status and satellite signal levels:
1. Press A (while the
U
is NOT flashing).
This will display the Receiver Status page:
Dilution of precision (DOP) is a measure of the satellite geometry quality and
therefore, the relative accuracy of your position, with 1 meaning good geometry and
10 meaning poor. Estimated position error (EPE) is an overall measure of your
positional accuracy using signal and data quality, receiver tracking status and DOP as
factors in computing the value displayed.
To view or change the EPE/DOP field:
1. Press
A
.
2. If the desired field (EPE or DOP) is not displayed, press
C
.
3. Rotate
K
to change between ‘epe’ and ‘dop’. Press
C
to complete.
64
REFERENCE
Receiver Status &
Satellite Signal Level
Section
5
Receiver Status page with EPE displayed.
Receiver Status page with DOP displayed.
Receiver Status
Signal strength of
satellite being tracked (1-9)
EPE/DOP
Satellites in view
EPE/DOP
value
Satellite in view
but not receiving signal
150man rev E 7/24/98 3:11 PM Page 64