Specifications

English
14
- Minimum SNR: SNR stands for Signal-to-Noise Ratio.
Ensure your SNR mask is not set too low (less than
20). GPS signals with lower SNRs will be very noisy
and contribute to accuracy degradation.
- Elevation Mask: Angle that specifies that any satellite
must be at least a specified number of degrees above
the horizon before the signals from the satellite are to
be used. Ensure that the elevation mask set in your
receiver is high enough to avoid using satellites near
the horizon as they are often noisier than satellites
higher overhead.
Tap Apply after making your choice and then tap OK to close
the GPS Settings window and quit this utility. By default, the
GPS is configured to track satellites in normal conditions of
reception (Open Sky).
NOTE: The first three options (Open Sky, Tree Canopy and Urban
Canyon) in fact use preset values for Maximum DOP, Minimum
SNR and Elevation Mask.
Viewing Current GPS Status
The GPS Status utility allows you to quickly see if the GPS re-
ceiver is calculating the position from the currently visible
GPS constellation. It can also be used to log and playback
NMEA data. Do the following to launch GPS Status:
- Select the tab, then Programs>GPS Utilities>GPS Status.
This opens the GPS Status window.
Regardless of the displayed tab, the bar at the bottom of the
screen displays the following, from left to right:
- The type of position being calculated (Fix Not Available,
Autonomous GPS or Differential GPS).
- The data logging status (No Log or Log:x.. xK where x.. x is
the current size of the file being logged, in kbytes).
- Position indicator light (Blue: Differential GPS position
computed; Green: Autonomous GPS position computed;
Red: No position computed).