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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
