System information

Hemisphere GPS Using PocketMax3 p/n 874-0012-000 Page 6 of 32
1.2.1 GPS Menu
Within the GPS menu button, the tabs are: Position, Satellites, Setup, Precision, Plot, Link and
About. The Position tab contains all the main position information, including latitude, longitude,
elevated height, speed and precision, all with configurable formats. There is also other
information in this tab, including the differential source.
Figure 1-4 GPS Position Screen
Note: When the receiver is receiving GPS information from satellites, the fields Latitude,
Lon, Date and Time in the GPS Position screen will all report current information. If these
fields stop updating every few seconds, then you likely have a GPS or antenna problem.
The Satellite tab has a sky plot of viewable satellites, how many satellites the receiver is
tracking, the PRN numbers of which satellites are being tracked and the bit error rate of
the differential source. The receiver should be tracking at least 4 GPS satellites in order
to compute a position, and ideally between 5 and 12 or more for best performance.