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Appendix B:
Operating Tips
The KE-USB36 is configured as 36 individual inputs, which are
activated by shorting them to the common Ground provided on
the header. Since these inputs are individual, they are completely
separate, and cannot produce "ghosting" as in a matrix
application.
Ground
Input 1
Input 2
Figure 14 - Electrical connection example for switches to
Inputs may also be driven from logic gates, provided they do not
drive voltage above the USB 5V supply on the unit. The logic
signals must produce an active logic low signal for the appropriate
amount of time as listed in Appendix A.
The recommended maximum cable length from the KE-USB36
input header to the input devices is 10 feet. The recommended
maximum cable length of the USB cable from the PC or Hub to
the KE-USB36 is 10 feet.
The Trackball header may be used for a Spinner instead of
KE-USB36 Header
KE-USB36 header
14
Pushbutton
Pushbutton
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