
MX500 PC Interface
The MX500 data ports 1 & 2 are both RS-422 type data
interface. If you need to connect the MX500 to a PC we
recommend using an RS-422 to RS-232 converter as
shown below.
MX 500
Negative GND (Black)
10.5 to 32 VDC (Red)
NMEA TX1 - (Blue)
NMEA TX1 + (Brown)
NMEA RX1 - (Orange)
NMEA RX1 + (Green)
NMEA TX2 - (Yellow)
NMEA TX2 + (White)
NMEA RX2 - (Purple)
NMEA RX2 + (Grey)
GND Fast Channel IN (lite Green)
Shield
PWR/Data Cable
(12-Pin Connector)
+
1
2
V
GND
RD(
B)
RD(A)
T
D
(
A
)
T
D
(
B
)
12 VDC
+
-
RS-232
RS-422
B&B Electronics
RS-422 to RS-232
Converter
Model 422LP9TB
To P C
Serial Port
PC Interface Cable Diagram
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