TeeJet RX 400p - Manual (Page 62)

RX 400p
98-05044 4-20
R1
Longitude information is parsed from the
GPGGA NMEA message. The longitude,
measured to the phase center of the antenna, is
usually referenced to the WGS-84 ellipsoid,
however, some DGPS services result in a
position relating to the North American Datum
1983 (NAD-83). This datum is essentially
equivalent to this ellipsoid, considering the level
of accuracy of this product.
Hgt 1030.40m
This menu item displays the current antenna
height in either meters or feet depending on the
units selected (See Section 4.15.2). The default
unit is meters. This information is parsed from
the NMEA GPGGA message.
The altitude, measured to the phase center of the
antenna, is usually referenced to the WGS-84
ellipsoid, however, some DGPS services result in
a position relating to the North American Datum
1983 (NAD-83). This datum is essentially
equivalent to this ellipsoid, considering the level
of accuracy of this product.
Hdg 187.3!t
This item displays the horizontal heading
clockwise from True North in degrees. This
information is parsed from the GPVTG NMEA
message string.
Vel 10.5 kph
This item displays the horizontal speed in KPH
by default. The units may be changed to MPH or
knots if desired (See Section 5.15.2 for details on
configuring the units of this item). This
information is parsed from the GPVTG NMEA
message.