Troubleshooting & Operating Tips
ProMARK X
8-13
Unit Searches Constantly.
If the unit has an almanac and is unable to
locate satellites, it searches continually until a satellite is found.
The unit may be unable to locate satellites under the following conditions:
•
The antenna is not positioned correctly.
•
The satellite signals are blocked from view by buildings,
mountains, etc.
•
There are signal reflections that can be corrected by moving
the antenna.
•
There are satellite outages.
Refer to
AUX 3 — Sat Status
, to verify that satellites should be available. Refer
to
Orienting the Antenna
to position your antenna.
Accuracy Warning Symbol.
The accuracy of a position fix is determined
by the position of the satellites used relative to each other. The closer the
satellites are to each other, the less accurate the fix. This is referred to as the
Position Dilution of Precision (PDOP), and is displayed on the third screen of
the fix. (PDOP is described in greater detail in Appendix 6.)
This symbol appears on the fourth
line of all screens when the PDOP
is 10.1 or more.
POS 32`26.67N
118`29.99W
3D 163m ALT
Ü ~
WARNING
When the accuracy warning symbol appears, do
not
use this data
to navigate.
Signal Quality
. The unit also measures the strength of the signal it receives
from the satellites and displays this information on the third screen of the
position fix. A very low signal quality indicates that a signal is so weak that
it may be lost.
SQ has little effect on the accuracy of the fix; it is intended only to alert you
that a signal from one or more satellites is not as strong as it could be.
Summary of Contents for GPS PROMARK X
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Page 10: ...vi...
Page 14: ...Introduction ProMARK X 1 4...
Page 92: ...Attributes ProMARK X 6 8...
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