Houston Radar SS300 User Manual
Page 11 of 19
Internal Clock:
The radar has a built in clock/calendar function. At the moment this is not used by the
firmware. However future functionality may be added that uses this functionality.
The radar does not feature a clock backup battery. So power must remain
connected to the radar for the clock to keep time. The clock may be used
as an “uptime” value. It will count the number of seconds since power up.
Configuring the Unit:
The unit’s internal parameters may be configured by connecting the radar’s RS232 port
to a PC’s RS232 serial port and using the Houston Radar Advanced Stats Analyzer
program’s configuration screen as described here.
The following internal “variables” may be set. Their functions are described below:
Radar
Configuration
Variable Name
Description
RS
Sets the RS232 serial port’s baud rate and output format. Do not change
this value unless you understand implications.
UN
Sets the internal speed units of the radar. All LO, SP, HI, SI speeds are
interpreted to be in this units.
0 = MPH
1 = KPH
LO
Low speed cutoff. Vehicles are not detected below this speed.
Minimum value is 2. Should be set to be less than HI. Speeds above
this limit trigger the O/P1 and O/P2 outputs and sends ASCII speeds.
Note: If the Rotary switch is enabled (See MO bitmask), then the actual
Cutoff speed = (LO + Rotary Switch Setting * SI)
HI
High speed cutoff. Vehicles are not detected above this speed.
Maximum value is 159. Should be set higher than LO speed.
SP
Flashing speed limit. Any speed higher than this value “flashes” the
trigger output at 50% duty cycle. To “flash” the ASCII speed, 000 are
interspersed in the “nnn” speed output on the serial port. Set to HI
value to never “flash” the speed output.
ST
Target detection sensitivity. Valid values are from 10 to 99 and are a
percentage of max range. So a value of 50 would yield about 150 feet
detection.
Note: This is not a range setting but detection sensitivity.
Thus if large vehicles are being detected at 400 feet, a value of 50 will
reduce detection range for them to approximately 200 feet
.
SF
1 = Select Fastest Target if multiple targets are detected on the road
0 = Select Strongest Target if multiple targets are detected on the road
