Case IH AFS Pro 700 - GPS Longitude display; GPS PDOP interpretation; DGPS SNR measurement

3-SETUP
“GPSLongitude”
Placementlabel:GPSLongitude
The“GPSLongitude”windowreportsthevehicle’sreal-
timepositioninangulardistanceexpressedindegreeson
acircleofreferencefromthezeromeridian.
RCIL11DSP367BBG6
“GPSPDOP”
Placementlabel:GPSPDOP
The“GPSPDOP”windowreportsGPSsignalquality
atthevehiclelocation.PositionDilutionOfPrecision
(PDOP)offersthebestoverviewsinceitreectsthe
geometryofthesatellitesabovethevehicle.AlowPDOP
meansthatthepositioningofsatellitesisgoodandthat
goodpositionalaccuracycanbeexpected.Ingeneral,
anyvaluebelow2offersgoodworkingresults.
RAIL14DSP1640BA7
“DGPSSNR”
Placementlabel:DGPSSNR
The“DGPSSNR”windowreportsSignal-to-NoiseRatio
(SNR)atthevehicle’slocation.SNRisameasureofsig-
nalstrengthagainstelectricalbackgroundnoise.Ahigher
SNRnumberprovidesbetteraccuracy.Nominalvalues
forthevarioustechnologiesusedare:
GPS
6
WAAS/EGNOS
3+
OmniSTARHP/XP/G2,VBS
7+
RCIL11DSP362BBG8
3-84