2-16 Operating Your Tablet Computer
Mask
Select the elevation (0 to 90 degrees) for covering some satellites with a
specific angle (default is 5 degrees).
Select Do not use DOP (Dilution Of Precision) mask (default is on) or the
Auto PDOP (Position 3D Precision) / HDOP (Horizontal Precision – 1 to 50,
default is Gray out / 8). DOP is used in geometrics engineering to
describe the geometric strength of satellite configuration on GPS
accuracy.
NMEA Message
These settings can only operate in NMEA format. Configure the data log
frequency (off, 1 to 10 seconds) of GGA (default 1 second), GSA (default
1 second), GSV (default 1 second), RMC (default 1 second), VTG
(default 1 second), and GLL (default is off).
Virtual COM Port Settings
In the Virtual COM. Settings section, select the drop-down arrow to
display a list of available virtual COM Ports. Create/delete the virtual
COM port and show the related information including the port number
and status. Status is displayed in the drop-down list to the right of the
COM port number and includes the following:
Virtual GPS in use – the COM port number is in use for
Virtual-GPS.
Free – the COM port number is not in use. Only Free can be selected
as the new virtual COM port number.
Other in use – the COM port number is used by others.
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