5
5.0 OPERATION
Note:
Refer to Figure 1 for switch and button locations.
Turn the unit on by moving the Power switch (8) to the
On
position. The
unit may be operated from the internal batteries and/or the charger/power
supply. The internal batteries will be trickle charged when using the AC
charger/power supply. To turn the unit off, slide the Power switch (8) to
the
Off/Charge
position. If the charger is plugged in, the batteries will
charge.
The sensor emits a laser beam, which is reflected back by a target (reflective
tape/paint, keyway, contrasting colors, etc). This reflected light is sensed
and amplified then compared to a threshold level (sensitivity) - the lower
the threshold level, the more ‘sensitive’ the sensor is. Whenever the amplified
signal is above the threshold, the output goes high (positive pulse) or low
Figure 3 Pin Connections
6
(negative pulse). The user can select either a positive or a negative output
pulse using the Polarity switch (5).
The gain of the input amplifier and the sensitivity can be adjusted manually
or automatically. This allows the unit to be used with many types of
targets at various distances and contrasting color conditions. To select the
Auto mode, turn the Sensitivity Adjust knob (7) fully counterclockwise,
otherwise you are in the Manual mode. Reflective tape and high contrast
color applications should be able to use the Auto mode.
5.1 Auto Mode
Make sure the Sensitivity Adjust
knob (7) is fully counterclockwise
and the
Auto/Gain
LED (3) is on.
Aim the laser at your target. Press
and hold the Learn/Gain button (6)
until the
On Target
LED (1) blinks
regularly or is on solid (depending
on the RPM of the target). Release
the Learn/Gain button. The
Auto/
Gain
LED will blink to show what
gain has been selected. Refer to
Table 2.
In many applications, this is all that is needed. In cases where the target is
marginal, the user may need to manually adjust the sensitivity after trying
the Auto mode.
5.2 Manual Mode
Aim the laser at your target. Turn the Sensitivity Adjust knob (7)
between
Min
and
Max
until the
On Target
LED (1) starts blinking or
comes on solid. If you can’t get a good setting, change the gain. Press
and release the Learn/Gain button (6) to change the gain of the input
amplifier. Each time the button is pressed, the gain is changed. The
Number of blinks
Gain
1 Strong Signal
X 1
2 X
2
3 X
4
4 X
5
5 X
8
6 X
10
7 X
16
8 Weak Signal - Move
Closer
X 32
Table 2 Auto/Gain Blinks
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