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3.8 CONNECTING TO NMEA HEADING
OUTPUT DEVICE
Connect a gyro equipment or equivalent that provide a below turn rate, otherwise the performance of
signal process and target tracking decrease.
Standard craft 12 deg/sec
High speed craft 20 deg/sec
Following NMEA sentences are available.
THS, HDT, HDG, HDM
1) Connection
When receiving azimuth information data from the NMEA azimuth output device, connect the necessary
signal lines to the attached NMEA data connector P5 (for J5) LTWBD8BFFA-LL7001 using the
following diagram as the reference.
JMA-5200MK2 side NMEA heading output device side
(4) NSKRX - Data return
(3) NSKRX + Data output from the NMEA heading output device
Connector for GPS compass/NSK equipment (J5)
To GPS compass or NSK unit
(1) NSKTX- : Output of receiving signals from NSK+
(2) NSKTX+ : Output of receiving signals from NSK-
(3) NSKRX+ : Input of receiving signals from NSK+
(4) NSKRX- : Input of receiving signals from NSK-
(5) GND : Power GND for NSK
(6) ALM+ : Dry contact output 1
(7) ALM- : Dry contact output 2
(8) +5V : Power for NSK (+5V)
2) Setting the NMEA azimuth output device
Set the following information in the NMEA azimuth output device.
Data output format NMEA V2.0 OR LATER VERSION
Output sentence THS, HDT, HDG, HDM
Data transmission cycle Must be 50ms or less
20ms or less recommended
Baud Rate 38400bps/(4800bps)
The shorter the data transmission cycle the better. If the cycle is too long, image processing, trail
performance, and TT (target tracking) performance are affected.
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