Enfora Enfora Mini MT, Руководство пользователя

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5 GPS Operation and Verification
5.1 GPS Operation and Verification
The Mini MT contains an integrated GPS receiver and GPS antenna. For best GPS performance the unit
should be placed in an area where it can have direct view of the sky.
5.2 Verification of GPS Lock
The Mini MT will provide an indication of successful GPS Lock within approximately 120 seconds when in
view of satellites.
The GPS LED will flash yellow when it is receiving a sufficient number of satellites to provide status. When
this occurs, the internal GPS receiver has enough information to track its current position.
5.3 Verify GPS Operation
The Mini MT GPS status may be obtained locally through the USB connection or through the GPRS
connection to a server. The following steps allow the user to determine GPS operation through a terminal
program and also through the Enfora Demonstration web server.
GPS Operation from Enfora Demo Server
The same command can be used in the server application by entering AT$GPSRD=10 in the Command /
Data text box, then selecting Write.
NOTE: The third field is a single character field representing the status of the GPS reading. There
are three valid character for this field and are described below:

A = Valid

V = Not Valid

9 = Enfora Specific response that GPS solution is not valid and the last known GPS location is being
substituted.