Appendix B (Continued) Version A15 Pin Assignments for the Mil spec Connector Each TECH 8 scanner has a 19-pin male Mil spec connector that is found on the side of the unit.
To connect the scanner to the host device, use a communication cable with a female Mil spec
connector. The communication cable may include a power transformer or it may be designed to
draw power directly from the host device. This item can be ordered when the scanner is
purchased.
The following is a list of pin assignments for Version A15 scanners. The communication
protocol for Version A15 is light pen emulation. The pin numbers are impressed on the male Mil
spec connector. For easier reference, refer to Figure 4 for pin locations.
PIN FUNCTION
A R Data
B
C
D
E
Light Pen Data Output
Signal Ground
Light Pen Source + 5 VDC
R Data Return
F
G
RS-232 Output
Clock In
H Clock In Return
J Clock Out
K Shield Ground
L
M
DTR Input
Clock Out Return
N Power to Scanner + 24 VDC
P Earth Ground
R Power Ground
S RS-232 Input Figure 4
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