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QK-AS07-N2K Manual
Check which protocol your connecting NMEA devices (e.g. Chart plotter) uses. If you are unsure whether
your connecting NMEA 0183 device uses NMEA 0183 RS422 or RS232, the input/output connections on
the device will give you some indication. Unfortunately, manufacturers who use the older RS232 protocol
are not consistent in their product labelling. The following table may help you identify which protocol your
product uses, however always check the manual to be certain. If your connecting device uses the older
RS232 protocol, use a QK-AS03 Protocol Bridge. The QK-AS03 connects and converts RS422 to the
older RS232 and visa-versa, through a simple connection, no configuration needed.
RS422 (Differential)
TX+ and TX- / RX+ and RX-
•
Swap two wires if not
work.
5. Data Output Protocols
NMEA 2000 output
Wire
NMEA 2000 five-core screened cable
connection
(12V, GND, CAN_H, CAN_L, Shield)
Signal type
CAN bus
Supported
127258 - Magnetic Variation
messages
129025 - Position and Rapid Update
129026 - COG and SOG, Rapid
Update
129029 - GNSS Position Data
129033 - Time and Date
129538 - GNSS Control Status
129539 - GNSS DOPs
129540 - GNSS Sats in View
127250 – Vessel Heading
6. Specification
Item
Operating temperature
Storage temperature
AS07-N2K Power supply
AS07-N2K supply current
AS07-C Power supply
AS07-C supply current
GPS Satellites Tracked
GPS Satellites Acquired
WAAS/EGNOS Satellites Tracked
GPS Position Accuracy
GPS-Fix Update Rate
Cold Start Acquisition
Compass accuracy (steady conditions)
Compass accuracy(dynamic conditions)
NMEA data format
V 1.0
RS232 (single-ended)
TX+ and TX- (GND)
TXa+ and TXa- (GND)
Output +Ve and –Ve
Occasionally older NMEA 0183 RS232 devices are labelled like
RS422 (TX+ and TX- / RX+ and RX-) so check the products' manuals.
NMEA 0183 output
4 wires:
12V, GND, NMEA Out+, NMEA Out-
RS-422
$xxGGA - GPS Fix Data
$xxGLL - Geographic Position Latitude and
Longitude
$xxGSA - GNSS DOP and Active Satellites
$xxGSV - GNSS Satellites in View
$xxRMC - Recommended Minimum Specific GNSS
Data
$xxVTG - Course Over Ground and Ground Speed
$xxZDA - Time and Date
'xx' above represents 'GP' if GPS, 'GL' if GLONASS
and 'GA' if GALILEO
$xxHDG - Heading with Deviation & Variation
$xxHDM - Heading Magnetic
Specification
-5°C to +80°C
-25°C to +85°C
12 VDC (via NMEA 2000 backbone)
≤100mA
12-24VDC
≤165mA (configuration mode);
≤105mA (NMEA 0183 output mode);
14-channel (maximum)
51-channel (maximum)
Any available channel
3m (10') with WAAS (95% of the time, SA off)
Up to 10 times per second (user selectable)
60 seconds
+/- 3°
+/- 5° (pitching and rolling up to 30°)
NMEA 2000 (and NMEA 0183 with AS07-C)
11 of 12
/
RX+ and RX- (GND)
/
RXa+ and RXa- (GND)
Input +Ve and –Ve
/
2021
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