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Appendix C
Pin Assignments
Version “1” Pin Assignments for RS-232, OCIA and
Light Pen Emulation
The version “1” scanner head cable is terminated with a male 25-pin D-type
connector. Connecting the scanner to the host device, may require a commu-
nication cable. The communication cable may include a connection for a
transformer or it may be designed to draw power directly from the host device.
This can be ordered when the scanner is purchased.
The version “1” scanner is designed to be used for RS-232, OCIA or Light
Pen Emulation communication.
The following is a list of the pin assignments. The pin numbers are impressed
on the head cable’s connector.
Pin Function
1 AC Shield Ground
2 RS-232 Receive Input
3 RS-232 Transmit Output
4 CTS Input
5 RTS Output
6 Reserved
7 Signal Ground
8 - 12 Reserved
13 Earth Ground
14 Power Ground 1
15 Light Pen Source
16 Light Pen Data
17 OCIA Clock In Return
18 OCIA Clock In
19 Power (11 - 30 volts) DC
20 DTR Input
21 OCIA Clock Out
22 OCIA Clock Out Return
23 OCIA RDATA
24 OCIA RDATA Return
25 Power Ground 2