Leica Geosystems GPS System 500 - Technical Reference Manual - Manual (Page 242)

242 9. The CONFIG Key Technical Reference Manual-4.0.0en
9.1 Survey - Satellite
Enables you to define the Satellite
Elevation Mask and also automatic
tracking of healthy satellites.
Elev Mask - The elevation mask or
elevation below which satellite data
will not be recorded and below which
satellites will not be shown to be
tracked. For RT applications the Elev
Mask should be set to 10°. For post
processing only applications, the Elev
Mask should be set to 15°. These are
the default mask angles used in the
System Default Configurations.
SV Health - Can be set to Automatic
or User. When set to Automatic, the
receiver monitors the incoming
satellite signal and if the signal is
flagged as unhealthy, will not record
data from it or use data from it in a
real-time computation.
When set to User, you may define
which satellites are used and which
not. The satellites are defined using
the HELTH (F4) key.
For the vast majority of applications
there should be no reason to set SV
Health to User.
Track Mode - The sensor may also
be configured to operate in one of two
Track Modes.
Max. Accuracy should be chosen for
normal survey applications.
MaxTrak is suitable for GIS applica-
tions where a lower accuracy may be
acceptable but it is desirable to track
satellites under noisier conditions
(trees, built up areas).
Only a code solution is possible if
MaxTrak mode is selected. However,
when the Track Mode is set back to
Max Accuracy, RTK phase solutions
will again be computed.
Additionally, it is not possible to import
phase data into SKI-Pro that has
been collected when the MaxTrak
mode was selected. Only code
solutions can then be computed in
SKI-Pro.
LossOf Lock - When losing all
satellite signals for example due to
satellite shading caused by tall
buildings, trees, etc. a message
“Complete loss of lock” appears. The
sensor may be configured to beep
with this loss of lock message or not.