Bosch MS 50.4 Manual page 127

GPS Sensor | 19
GPS sensor start-up
Does the GPS sensor 'view' the sky?
Did the GPS sensor complete its initial start-up procedure? This may take up to 20 min.
A correct reception is indicated when 'gps_fix' is showing '3D Fix'.
GPS sensor values are frozen
Does the sensor has lost its reception? The old values will be kept if the reception is lost.
The gps_smask channel shows which NMEA sentence is received.
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