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This operational power translates directly into a longer battery life or gives you an option
to power the unit from smaller batteries that would also require smaller solar panels.
Serial Connection:
The DR500 has a standard 3 wire (RX, TX and Ground) RS232 port to output speeds and
accept configuration settings.
Optionally the DR500 can be ordered with dual RS232 ports that are active at the same
time giving the user an option to connect serial outputs to either port (see serial port
diagram).
Speed data is output serially in mph (or Kph if set via the remote) as three ASCII digits in
the following format:
nnn\r\n
where:
nnn : The three digit ASCIII speed digits in mph/kph
\r\n : A new line followed by a carriage return character
When no further vehicles are detected, the radar outputs:
000\r\n or ?000\r\n (once or repeating depending on configuration)
This format is compatible with other industry formats including a standard RS232 serial
port on a PC, message boards and speed displays.
Note: Optionally, the radar may be set to output the display speed in +nnn\r format.
Please see serial port config settings table later section.
Setting Detection Sensitivity via the ASCII Interface:
In addition through the IR interface, the radar also allows programmatic sensitivity
setting (and many other parameters in an industry compatible manner- contact us for
details).
Over the serial interface, send in ASCII the following commands:
Sensitivity:nn\n and
Sensitivity?\n
In the 1
st
case it sets the detection sensitivity to "nn" where nn is from 10 to 99 and is a %
of the max detection distance (typically about 1500 feet but can vary with installation
effects and size of the target).
If the sensitivity is set ok, it replies with
OK\n
