Opticron Tracker 660 - Manual (Page 5)

Range finding or distance measurement mode
The best measurement results will be obtained when measuring large, bright and
highly reflective objects. Small, dark objects will be difficult to range-find over a
long distance. For example, a large mirror could be targeted at up to the device’s
maximum range of 700 metres with excellent accuracy. Large objects such as trees
or buildings can be targeted accurately at around 450 metres. Smaller objects such
as a golf flag, a deer or a person could be targeted at a range of up to 200 metres.
Weather conditions will also affect the maximum range and accuracy of
measurement. Overcast but clear days will give the best results whilst a very sunny
or very foggy day will reduce range and accuracy. The minimum distance that can
be measured is 7 metres (8 yards).
To begin measurement, briefly press the power button. The distance measured will
be shown on the LCD and the quality of the measurement will be indicated.
The device can also be used in scanning mode. This allows the user to track a
moving object or to move the crosshairs across an object until a measurement can
be made. To use scanning mode, press and hold the power button. The laser
indicator will flash whilst the device tries to find the target and the distance/speed
display will show four dashes (- - - -). Once a good signal has been found, the
display will change to show the measurement. Releasing the power button will
deactivate this mode and the last measurement taken will remain on screen.
To switch between measuring in metres and yards, press and hold the ‘MODE’
button for 2 seconds. The bottom left of the LCD will show ‘M’ or ‘Y’. To switch
back again, press and hold the ‘MODE’ button for a further 2 seconds.
The Tracker 660 will power off automatically if not used for 20 seconds.
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