User's Manual

Wire Signal Descriptions:
Note 1: See Appendix A for detailed description on how to hookup an
external device to be triggered when radar detects incoming objects.
Incorrect hookup may result in the output devices being destroyed and will
not be covered under warranty.
The DC310 features two low impedance outputs that can trigger/turn on an
external display/device to bring it out of power saving mode when a vehicle is
detected. Both of these outputs can be configured to trigger for incoming
vehicles, outgoing vehicles, or all vehicles. If you need different functionality,
however, please contact us.
When a vehicle is detected, the corresponding pins are pulled down to GND and
held low for the time duration specified in milliseconds by the ”TA” variable. This
logic may be inverted via a bit in the “IO” variable. See later section.
These are “open drain” (AKA open collector) outputs capable of sinking 130 mA
each. You must limit the current externally to ensure that no more than 130 mA
goes into each pin when they turn on. They may be connected in parallel to
double the sink capacity to 260 mA.
The device providing this functionality on the radar board is the ON-Semi
“NUD3124” relay driver. Please refer to the datasheet for this device on detailed
operating characteristics for these trigger outputs.
Connector
Pin #
Signal
Name
Direction
(wrt Radar)
Description
1 GND PWR Radar GND (battery “–“ terminal)
2 N/C N/C Do not connect
3 I/O0 I/O Reserved for future use
4 I/O1 I/O Reserved for future use
5 I/O2 I/O Reserved for future use
6 I/O3 I/O Reserved for future use
7 Trig O/P 1 Output “Open Drain Output 1”. See Note 1.
8 Trig O/P 2 Output “Open Drain Output 2”. See Note 1.
9 RS232 TX Output RS232 Transmit Signal from radar
10 RS232 RX Input RS232 Receive Signal into radar
11 VCC PWR +5.5 to +18VDC Power Supply
12 GND PWR Radar GND (battery “-“ terminal)