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Appendix B:
Operating Tips
The KE-USB36FS is configured as 36 individual inputs, which
are activated by shorting them to the common logic 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-USB36FS
input header to the input devices is 10 feet. The recommended
maximum cable length of the USB cable from the computer or
Hub to the KE-USB36FS is 10 feet.
The Trackball header may be used for a Spinner instead of
KE-USB36FS Header
KE-USB36FS header
18
Pushbutton
Pushbutton
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