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QK-AS08-N2K Manual
For RS422 interface devices, these wires need to be connected.
NMEA
0183
POWER
Swap NMEA input + and NMEA input – wires if the AS08-N2K does not work.
*
[1]
Although the AS08-N2K sends out NMEA 0183 sentences via differential end RS422 interface, it also
supports single end for RS232 interface devices, these wires need to be connected
NMEA
0183
POWER
[2]
*
Swap NMEA input and GND wires if the AS08-N2K does not work.
5. Data Output Protocols
Wire connection
Signal type
Supported messages
Wire connection
Supported messages
V 1.0
QK-AS08-N2K
wire
NMEA output+
NMEA output-
Black: GND
Red: Power
QK-AS08-N2K
wire
NMEA output+
NMEA output-
Black: GND
Red: Power
NMEA 0183 output
4 wires:
12V, GND, NMEA Out+, NMEA Out-
RS-422
$IIHDG - Heading with deviation & variation.
$IIHDM - Heading magnetic.
$IIROT – Rate of turn(° /minute), '-' indicates bow turns to port.
$IIXDR – Transducer measurements: Vessel attitude (pitch and roll).
*XDR message example:
$IIXDR,A,15.5,D,AS08-N2K_ROLL,A,11.3,D,AS08-N2K_PITCH,*3B
where 'A' indicates transducer type, 'A' is for angle transducer.
'15.5' is the roll value, '-' indicates roll to port.
'D' indicates the unit of measurement, degree.
AS08-N2K_ROLL is the name of transducer and the data type.
'A' indicates transducer type, 'A' is for angle transducer.
'11.3' is the pitch value, '-' indicates bow is below level horizon.
'D' indicates the unit of measurement, degree.
AS08-N2K_PITCH is the name of transducer and the data type.
*3B is the check sum.
NMEA 2000 output
5 wires:
Data+, Data-, shield, 12V, GND.
* AS08-N2K need 12V via NMEA 0183 port, not NMEA 2000.
PGN 127250 – Vessel Heading, converted from HDG sentences
PGN 127251 – Rate of Turn, converted from ROT sentences
8 of 10
Connection needed on
RS422 device
NMEA Input+ *
[1]
NMEA Input-
GND (for Power)
12v—14.4v Power
Connection needed on
RS232 device
[2]
GND *
NMEA Input
GND (for Power)
12v—14.4v Power
2021
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