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Column Pin Assignments: Column pin assignments are
selected from the corresponding drop down list across the top
of the matrix. Each column must have a header pin assigned to
it. Specify any pin "1" through "9" as a column.
Row Pin Assignments: Row pin assignments are selected
from the corresponding drop down list. Each row must have a
pin assigned to it. Specify any pin "1" through "9" as a row.
*Note:
A pin cannot be assigned to both a Column and a Row.
If a conflict is detected during the matrix definition, it is indicated
in the header row/column assignment image in the upper right at
the pin position(s) being used for multiple definitions.
Single Key at a Time: This option will lock out additional
key activations once a key has been detected. No new key
responses will be generated until all keys have been released if
this option is checked in the configuration.
Filter Ghost Keys: Select this option to have the KE-
USBMX20 filter out "ghost" conditions within the matrix.
Virtually any matrix has the potential for a "ghost" condition.
This condition occurs when 3 or more keys are active at the
same time and share a row and multiple columns, or a column
and multiple rows. The simple way to explain this condition is
to look at a 2 column by 2 row matrix. When 3 of any of the
keys are held, the result is that all 4 switches appear electrically
activated due to feedback of columns through the rows.
If uncertain of this option, it is recommended that it be
selected.
2 Column by 2 Row Matrix
When 3 switches pressed, all
4 electrically appear to be on.
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