LTI 20-20 Marksman
Laser Technology, Inc.

IACP approved

LTI 20-20

Note: European version has a different speed measuring range and different minimum and maximum operating distance.





The unit is programmable, some specifications and features, such as speed/range in English or metric units (mph/ft or kmh/m) are a function of software version installed.

Manufacturer claims unit processes a target if more than 75 percent (45 out of 60 pulses for US version) of target echoes during one sample period (0.3 second) are valid. Valid echoes must be within 20 centimeters (about 8 inches) of expected range (about 1.3 nanoseconds).

       speed range   +/-200 mph (on-coming and going traffic)
    speed accuracy   +/-1 mph velocity
       sample time   0.3 seconds

      target range   30 feet (min) to 1,000 or 2,000 feet
    range accuracy   +/- 0.5 feet (6 in) range (claimed)
         beamwidth   3.5 mrad (0.2 degrees)
      early models   3 mrad (0.172 degrees)

          aperture   separate transmit / receive
                     transmit above receive aperture

        wavelength   approx 904 nm
   pulse rise/fall   less than 1 ns
      light source   3 diodes lined up side-by-side

     environmental   -22 to 140 degrees Fahrenheit
                     (-30 to 60 degrees Celsius)

        dimensions   3.5 x 5 x 8 inches
            weight   4.5 lb

       Data Output   serial data for still or video camera

      LASER PULSES   reported (best guess)
                     60 pulses per sample time
                     200 pulses per second (sample time 300 ms)

                     125 pulses per second (European version)

       pulse width   12 ns pulse width
Laser Radar Specifications