Datalogic FireScan D141 빠른 참조 - 페이지 7

{카테고리_이름} Datalogic FireScan D141에 대한 빠른 참조을 온라인으로 검색하거나 PDF를 다운로드하세요. Datalogic FireScan D141 13 페이지.
Datalogic FireScan D141에 대해서도 마찬가지입니다: 빠른 참조 매뉴얼 (2 페이지)

페이지 인쇄

BEEPER/LED

VIDEO

LASER ON

+VCC

This scanner input drives the green decoding

LED, and the beeper in the scanner. The

LED turns on when a positive current is

applied to the pin. The beeper sound is

obtained pulsating this current at a frequency

of about 2 kHz. The maximum voltage that

can be applied to this input is 5 Vdc.

This "open collector" scanner output is

electrically

supplies a series of pulses the length of

which are proportional to the width of the

elements within the barcode read. A low

output level corresponds to a bar. The

frequency of the pulses depends on the

density of the code, the distance from code

and the programmed output scan frequency

(see the following figure Video and Scan

signals).

A positive voltage between 4.75 and 5 Vdc is

applied to this input by the decoder when the

decoding logic senses the trigger is pressed;

this causes the laser to start scanning and

the red LED to turn on.

This input must be connected to the positive

pin of the supply voltage (4.75 - 14 Vdc).

When the LASER ON pin is positive, all the

current necessary to power the scanner flows

through +VCC.

CODE

VIDEO

SCAN

identical

to the barcode.

Video and Scan Signals