15
Appendix B
IS4210 and IS4213 Pin Assignments
The IS4210 and IS4213 scanners both terminate with a 9-pin female squeeze
connector. The pin numbers impress on the connector.
Pin
Signal Name
Function
1
Scan Sense
Each positive transition of the scan sense
signal represents the start of a scan cycle,
which is one pass in each direction across
the bar code. Therefore, it sends the bar code
data (both forwards and reverse) between the
rising edges. There are 35 scan sense pulses
per second, which equals 70 scans per
second.
Note:
The polarity does not show scan
direction.
This open collector output can sink 25 mA
via an external pull up resistor connected to
a voltage not to 20 VDC.
2
Data
Data is an output digital representation of the
scanned bar code. A low level represents a
bar and a high level represents a space.
This open collector output can sink 25 mA
via an external pull up resistor connected to a
voltage not to 20 VDC.
3
Decode LED
The scan head is equipped with a LED and a
beeper assembly. A +5VDC to 12 VDC input
to the head at this pin will light the green LED.
If it oscillates at approximately 2 KHz, it will
drive a beeper. The current should be no more
30mA. Typically, this is used to show that
decoding has occurred.
4
Reserved