Metrologic IS421X ScanGlove Guía de usuario descargar pdf (Pagina 19)

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.

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Metrologic IS421X ScanGlove Guía de usuario Pagina 19