Green Solid; Gps Traffic Light Operation; Red Flashing; Red/Yellow Solid - Leica MX400 Operating Instructions Manual

Operator's Manual
from time to time during normal operation. It usually occurs when
you are tracking 3, 4, or 5 satellites, and the satellites have poor
geometry relative to your position. If you are patient, the condition
will normally go back to Green Solid, when you pick up another
satellite, or the geometry of the existing satellites improves. The
factory default level for this indication is with an HDOP of 4 to 10.
During this period, your positioning information is less than
optimal, and position accuracy may be off by as much as 10 to 50
meters. You can press the GPS function key and refer to the GPS
section in this manual for guidance if this light condition occurs.

Green Solid

DGPS position update with HDOP value less than 4. This is the
normal operating condition. Position accuracy is normally better
than 5 meters. Keep in mind that position accuracy is always only
as good as the corrections received, their age, your distance from
the reference station, and the geometry of the satellites. This is the
normal operating condition and no icon will be displayed.
Note: If you or a crew member changes the
DGPS mode to Off in the CFG1 DGPS
!
screen, you will also not have an icon and
the LED will be green.

GPS Traffic Light Operation:

Red Flashing

not tracking satellites (no position update). This is normally for the
first 2 minutes or so when turning the unit on. The very first time
you turn the unit on, or if the memory is reset or lost, this condition
is also normal. Allow the receiver to run for at least 30 minutes
under these circumstances. If it still does not change to Red Solid,
refer to the troubleshooting section of the Installation And Service
!
Manual.An icon similar to the one at left will be displayed in the
upper left corner of screen.

Red/Yellow Solid

Dead Reckoning . When normal GPS or DGPS operation is not
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Keypad & Display Description
Version 3.3