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4 Reserved
5 Proximity Detect The proximity detect is a momentary
grounding switch. The controlling computer
should provide a +5±.25 VDC pull up
which can be grounded when the proximity
detect activates.
This indicates that an object has moved
within scanning rage. It is recommended
that this signal be debounced for approx-
imately 30 milliseconds.
Note: This scan head was not designed
to have the laser enabled
continuously as might be desired if
the scanner was in a permanent
mounting fixture.
6 Laser/Motor Control A +5 VDC input to the head which is used
to start the flipper motor and signal
processor, and enable the visible laser
diode (VLD). This can be a TTL level
signal and requires less than 1 milliampere
of current.
7 Ground A power ground capable of handling a 500
milliampere load.
8 SHIELD Cable shield to chassis ground (no load).
9 Scanner VCC Primary laser diode/motor power input. +5
VDC should be present at this pin and
capable of supplying up to 125 mA when
enabled by the signal at pin 6.