Download TruSpeed DC Manual - Tele

Section 8 – Glossary
Beam divergence:
The tendency of a laser beam to expand in diameter as it
moves away from the source, measured in milliradians (mrad).
Continuous Mode:
Alternate speed measurement mode. Allows you to take several
successive readings of a target vehicle. Re-trigger for each new
target. See page 21.
Display Integrity Test:
Allows you to verify that all segments of the LCD screen are
operating. See page 24.
Fixed Distance Test:
Uses one measurement to a known distance to verify the
measurement accuracy of the TruSpeed DC. See page 27.
Laser:
Light Amplification by Stimulated Emission of Radiation.
Lidar:
A device that is similar in operation to radar, but emits pulsed
laser light instead of radio waves.
Microcontroller:
The computer processor that controls all of the functions of the
TruSpeed DC.
Receive Lens:
Located on the front panel of the TruSpeed DC, it is the bottom
lens and receives the signals back from the target and then
feeds the signal information to the microcontroller.
Reticule:
A scale located in the sighting scope that helps you aim to
your target. It is visible when the TruSpeed DC is powered ON.
You may need to press the TRIGGER to see the reticule. See
page 4.
Transmit Lens:
Located on the front panel of the TruSpeed DC, it is the top lens
and transmits the infrared laser signals.
Weather Mode:
Alternate speed measurement mode. The laser only acquires
targets that are beyond the range where weather affects the
laser’s ability to capture a speed reading. Targets must be at
a distance greater than 61 metres. See page 20.
Zero Velocity Test:
See Fixed Distance Test.
43
© Tele-Traffic UK Ltd 2010