QK-AS07-0183 Manual
V 1.0
5 of 10
2020
Figure 2 Connection wires
3.1. Connect two NMEA 0183 devices (RS232)
The AS07-0183 sends positional sentences, via RS232 interface, to be available to all connected
devices.
For most of RS 232 interface devices. Only two wires need to be connected as below:
QK-AS07-0183
RS232 interface devices
TX(NMEA OUT)
RX(NMEA IN)
GND(and GND shield)
GND(some time called COM)
3.2. Connect to NMEA 0183 devices (RS422)
Although AS07-0183 sends out NMEA 0183 sentences via single end RS232 interface, it supports most
of RS422 interface(differential signal), in the market.
Two wires need to be connected as below:
QK-AS07-0183
RS422 interface devices
TX(NMEA OUT)
NMEA IN- (some times called NMEA/B,-Ve)
GND(and GND shield)
NMEA IN+ (sometimes called NMEA/A, +Ve)
Try to reversing two wires if above connection doesn’t work.
The following is an example wire drawing for connection with our QK-A031 NMEA multiplexer.
Figure 3 Connect with A031
