Measurement Computing LogBook Series - Manual (Page 101)

LogBook User’s Manual 958396 GPS and Serial Device Data Collection 6-13
Example Application #3
A GPS receiver is attached to the LogBook to record the present fix of the vehicle under test. The
LogBook is to trigger whenever the altitude is above 1000 meters and the fix quality is equal to 3. The
following calculate channel equation yields a true/false output that is both recorded and used as the trigger
source.
(SER_CH02 > 1000) And (SER_CH03 == 3)
SER_CH02 is the altitude from the GPS and SER_CH03 is the fix quality from the GPS.
LogBook/GPS - Specifications
Supported Protocol: NMEA 0183
Required NMEA 0183 Message: GGA
Electrical: RS-232
Connection: DB9 female connector
Baud Rate: 4800 Baud