Leica Geosystems Leica mojoXact Plus - Manual (Page 106)

106 NMEA Output, Leica mojoXact Plus
8 NMEA Output
General informa-
tion NMEA 0183 and NMEA 2000 are standards developed by the National Marine Elec-
tronics Association. The standards apply to communication between devices such as
GPS receivers, echo sounders, sonars, anemometers, other marine devices, and a
range of instruments.
The mojoXact Plus supports:
• the output of NMEA 0183 data.
• logging NMEA 0183 data to a USB memory key.
• the output of NMEA 2000 data.
The mojoXact Plus is capable of outputting position information with terrain compen-
sation in NMEA format. NMEA 0183 output is via the serial connection on the
mojoXact Port Expansion Cable. NMEA 2000 output is via the ISOBUS CAN port. By
default, NMEA is not active.
The configuration of NMEA 0183 and NMEA 2000 for a mojoXact Plus that is used
with a third-party terminal, is discussed in the sections below. For information on
NMEA output when the mojoXact Plus is used with a Leica mojo3D, refer to the Leica
mojo3D User Manual.
NMEA Sentences
Available The mojoXact Plus is capable of outputting the following information through the
NMEA sentences:
• GPGGA geographic coordinates
• GPGLL latitude and longitude
• GPGSA GPS satellites available
• GPGST noise statistics (position errors)
• GPGSV GPS satellites in view
• GPRMC coordinates and direction
• GPVTG velocity and direction
• GPXTE cross-track error, measured
• GPZDA date and time (Zulu Date)
Limitations • The mojoXact Plus provides support for the NMEA 0183 and NMEA 2000 stand-
ards only.
• The mojoXact Plus does not support flow control.
• The mojoXact Plus supports different baud rates, but the baud rate selected may
limit how many sentences can be output and the rate at which they are output.
For example, at low baud rates it is not possible to output all sentences at 10Hz.
The mojoXact Plus will detect this situation, display an error and disable NMEA
output. If you receive this error, switch to a higher baud rate or reduce the
number and/or rate of sentences to be output.