ST7200 Troubleshooting Guide
Ver. 0.0
Page
6
GPS Test
This test verifies the communication between the device with it internal GPS and if the
GPS it is working correctly.
The GPS test can be verified by the LED behavior, the GPS LED (Green) reflects the state
of the GPS fix
o
Solid mean: Searching for satellite
o
Blinking every second means: GPS lock
Send the cXT:7001,2, the response of the command is a string in the format:
$$<UID>,7001,<D>,<T>,<LT>,<LN>,<AL>,<SP>,<HD>,<SV>,<HP>,<BV>,<GS>,<OT
>,<CQ>,<MI>,<IG>,<BB>,<PM>##
Ex:
$$354660046703651,7001,
2014/06/09,20:21:36,25.80226,-80.33211
,-31.8,0,0.0,10,0.9,12.5,1,2,15,0,0,4.1,1##
If you don’t see a valid date, time, latitude and longitude from the device, send the
command below to check the GPS fix quality.
+XT:7050,1
The response is a message string in the format:
$$<UID>,7050,<GSM>,<GPR>,<PDP>,<HD>,<HO>,<PU>,<R>,<%GPS>,<%GPSQ>,
<%GSM>,<%GPR>,<%PDP>,<LV>,<HV>,<CX>,<DBO>,<ABI>,<DBI>,<SO>,<SI>,<
SS>##
<%GPS>
is Percent lost GPS
<%GPSQ>
is Percent lost GPS based on 5 Sat Quality Factor
If the device fails to get a valid GPS fix, then move the device to a location with a
better view of the sky and wait up to 15 minutes. If the device doesn’t report a valid position
then it’s possible that there is a inconvenience with the GPS module.
