16
5
Proximity Detect
The proximity detect is a grounding switch that
is active while an object is in the specified
detection field. The controlling computer should
provide a +5 VDC pull up. Ground the +5 VDC
pull up when the proximity detect activates.
This shows that an object has moved within
scanning range. We recommend that this signal
debounce for approximately 30 milliseconds.
Note
:
We did not make the design of this scan
head to have the continual enabling of
the laser as if the scanner is in a perm-
anent mounting fixture.
6
Laser/
A +5 VDC input to the head. Its use is to start
Motor Control
the flipper motor and signal processor, and
enable the visible laser diode (VLD). This can
be a TTL level signal and require less than 1
milliampere of current.
7
Ground
A power ground that can handle a 500-
milliampere load.
8
SHIELD
Cable shield to chassis ground (no load).
9
+5 VDC Supply
Primary laser diode/motor power input. +5
VDC should be present at this pin and can
supply up to 125 mA when enabled by the
signal at pin 6.
