Veris-technologies Quad 2800 Soil EC Mapping System - Operating Instr Manuel d'utilisateur télécharger pdf (Page 34)

OM17-Quad2800

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Procedure #5: Diagnosing GPS-related problems

If you do not see a GPS, DGPS, or RTK in the upper left-hand corner of the EC Surveyor screen,

you do not have GPS coming in, and no data will be sent out the serial port for logging.

Figure 5.1

Insure your GPS receiver is powered and outputting NMEA strings GGA, and either VTG or RMC

at a 1hz rate; 4800 baud, 8 data bits, no parity, 1 stop bit. Verify that your GPS cable is sending

GPS data through pin 2, pin 5 is ground, and no other pins have signal or power on them. The

most common issue is hz rate. If the GPS has been used for lightbar guidance it may have been

set to a 5 or 10 hz rate. It will need to be changed to 1 hz in order for the EC Surveyor to accept it.

Shown below is a Troubleshooting tree for diagnosing GPS signal problems. It is not meant to

replace your GPS receiver user manual—it merely shows how to determine if your receiver is

sending the GPS signal that the EC Surveyor needs.

Figure 5.2

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Veris-technologies Quad 2800 Soil EC Mapping System - Operating Instr Manuel d'utilisateur Page 34