LTI TRUCAM LASER MEASUREMENT DEVICE - Tele-Traffic

Weather Mode
Moisture is reflective. Weather such as rain, snow, mist, spray or fog can make it difficult for the laser
to receive signals back from the target vehicle. This is especially true when you are trying to capture
speeds at close range. The TruCAM includes a built-in Weather Filter that, when it is active, it is applied
when the laser is fired.
When the Weather Mode is active, the factory-defined gate setting increases the instrument’s minimum
range from 20 metres to 61 metres. Increasing the minimum range ensures that the laser only acquires
targets beyond the range where weather affects the laser’s ability to capture a speed reading.
When this filter is active:
1. The icon is displayed at the top of the Touch Screen as
Figure 
 47 shows.
2. Targets must be a distance greater than 61 metres.
3. The instrument’s maximum range is not changed.
4. Other than the above items, the TruCAM operates the same as when
the Weather Mode is not active.
To activate the Weather Mode
1. Ensure that the TruCAM is powered ON and that the Capture Mode is
active.
2. Tap to display the other options on the Caption Session Toolbar.
3. Tap or press the soft key to activate the Weather Filter.
4. Proceed
with making a normal speed measurement as described on
the previous page.
Rear Plate Mode
Rear Plate Mode can be used when targeting an approaching motorcycle
or other vehicle that does not have a front Licence plate.
The process of measuring the speed and distance is the same as in
the Speed Mode. The difference is that in this mode, after the speed
measurement has been taken, continue to hold the TRIGGER and track
the vehicle as it passes.
Keep the camera on the target until it is on the rear Licence plate and then
release the TRIGGER. The still image is captured when you release the
TRIGGER.
When this mode is active the icon is displayed at the top of the LCD Touch Screen as Figure 48
shows.
To start the Rear Plate Mode, tap or press the soft key.
• Image quality may be poor if the target vehicle is not in the camera focus or range when you release
the TRIGGER.
• In this mode, target vehicles will always be approaching, therefore, all measured speeds will be
positive values.
38
Figure 47
Figure 48
© Tele-Traffic UK Ltd 2011