Product Manual

11
SYSTEM HARDWARE OVERVIEW
RS422 SERIAL INTERFACE (CONTINUED)
317 Connection Details
Power supply
The radar is powered using a DC voltage in the range of 10.8 to 16 Volts. At 12V the current consumption of the
radar is typically 225mA.
Reverse polarity protection is included in the design. The radar can take a large current during power up that is
of the order of amps which only lasts for ~1ms and as such should not affect most applications.
A thermal fuse with a 750mA rating has been installed to protect against electrical short circuit fault conditions.
RS422 CONNECTOR CONNECTIONS
Pin No Cable colour Description
1 White 422 Rx A non-inverting input to 317
2 Brown 422 Rx B inverting input to 317
3 Green 422 Tx Z inverting output from 317
4 Yellow 422 Tx Y non-inverting output from 317
5 Grey 0v DC
6 Pink +12v DC
7 Blue n/c
8 Shield n/c