JRC JMA-3400 Series Instruction Manual page 59

Chapter 1 INSTALLATION
JMA-3400 series is compatible with NMEA2000.
To use NMEA2000, an optional NMEA2000 cable is required.
The model name of the NMEA2000 option cable is "CFQ-7765."
For information about NMEA2000 PGN that can be used for input/output, see "12.7 INPUT/OUTPUT
SIGNAL."
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