Metrologic Instruments MLPN 2159 - Manual (Page 21)

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Figure 10
Version “15” Pin Assignments for Light Pen Emulation
Each TECH 7 scanner has a 19-pin male Mil spec connector that is located 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 supply or it may be designed to draw power
directly from the host device. This item can be ordered when the scanner is
purchased.
The Version “15” scanner is designed to be used for Light Pen Emulation
communication.
The following is a list of pin assignments. The pin numbers are impressed on
the male Mil spec connector. For easier reference, refer to Figure 10 for pin
locations.
Pin Function
A R Data
B Light Pen Data Output
C Signal Ground
D Light Pen Source & 5
VDC
E R Data Return
F RS-232 Output
G Clock in
H Clock in Return
J Clock Out
K Shield Ground
L DTR Input
M Clock Out Return
N Power to Scanner & 24 VDC
P Earth Ground
R Power Ground
S RS-232 Input