MS6720-47 KEYBOARD WEDGE INSTALLATION TO THE PC
1. The “Y” coil cable is terminated with a 5-pin DIN female connector on
one end, and a 6-pin mini DIN male on the other. Also included with
the MS6720 is an adapter cable with a 5-pin male DIN on one end and
a 6-pin female mini DIN on the other to mate to a specific keyboard.
According to the termination required, connect the appropriate end of
the adapter cable to the coil cable, leaving the necessary termination
exposed for connecting to the keyboard and the keyboard port on
the PC. Refer to Appendix C for pin assignments.
2. If the PC is on, exit the application and turn the PC off.
3. Disconnect the keyboard from the PC.
4. Plug one end of the coil cable into the keyboard connector on the PC.
Then plug the keyboard connector into the other end of the coil cable.
Plug in the external transformer. Refer to the manufacturer’s
recommendation below. Connect AC power to the transformer.
5. Power up the PC.
Metrologic recommends the use of an external power supply with MS6720-47
Keyboard Wedge applications. Powering** the MS6720-47 directly from the
computer keyboard connector could interfere with the operation of the scanner or
the computer. Not all computers supply the same current through the keyboard
port, this explains why a scanner would work on one computer and not another.
To maintain compliance with applicable standards, all circuits connected to the scanner must meet the
requirements for SELV (Safety Extra Low Voltage) according to EN 60950.
**To maintain compliance with standard CSA C22.2 No. 950/UL 1950 and norm EN 60950, the power
source should meet applicable performance requirements for a limited power source.
Power Jumper (Direct)
“Y” Coil Cable 5F