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QK-AS08 Manual
6. Click 'Config'. After a few seconds, your settings will now be saved and you can close the
configuration tool.
7. Click 'Read' to check that the settings have saved correctly before clicking 'Exit'.
8. Remove the AS08 power supply.
9. Disconnect AS08 from PC.
10. Re-power the AS08 to activate the new settings.
4.1. NMEA 0183 wiring - RS422 or RS232?
AS08 uses the NMEA 0183-RS422 protocol (differential signal), however some chart plotters or devices
may use the older NMEA 0183-RS232 protocol (single-ended signal).
For RS422 interface devices, these wires need to be connected.
NMEA
0183
POWER
Swap NMEA input + and NMEA input – wires if the AS08 does not work.
*
[1]
Although the AS08 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 does not work.
5. Data Output Protocols
Wire connection
Signal type
Supported messages
V 1.0
QK-AS08 wire
NMEA output+
NMEA output-
Black: GND
Red: Power
QK-AS08 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_ROLL,A,11.3,D,AS08_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_ROLL is the name of transducer and the data type.
'A' indicates transducer type, 'A' is for angle transducer.
7 of 9
Connection needed on
RS232 device
NMEA Input+ *
[1]
NMEA Input-
GND (for Power)
12v—14.4v Power
Connection needed on
RS422 device
GND *
[2]
NMEA Input
GND (for Power)
12v—14.4v Power
2021
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