Ag Leader GPS 5100 User Guide User Manual
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GPS 5100 Receiver User Guide 7
Overview 2
NMEA is output when the receiver is exporting GPS position
information to an external device, such as a yield monitor, or to
a mapping software program.
For more information on the National Marine Electronics
Association (NMEA) and Radio Technical Commission for
Maritime Services (RTCM) communication standard for GPS
receivers, go to the following websites:
–
On the Tro the
document called NMEA-0183 Messages Guide for AgGPS
Receivers.
•
1 PPS output
To synchronize timing between external instruments and the
internal clock in the receiver, the connection port outputs a
strobe signal at 1 PPS (pulse per second). To output this signal,
the receiver must be tracking satellites and computing GPS
positions.
•
J1939 (CAN) bus
Both connection ports on the receiver support the J1939
Controller Area Network (CAN) bus protocol. This protocol
standardizes the way multiple microprocessor-based electronic
control units (ECUs) communicate with each other over the
same pair of wires. It is used in off-highway machines, such as
those used in agriculture, construction, and forestry.
For more information, go to the Society of Automotive
Engineers (SAE) International website at
•
ISO 11783 messages
Both CAN ports support some ISO 11783 messages.