Appendices
F-8
MicroHAWK V320-F / V330-F / V420-F / V430-F Barcode Reader User Manual
F-4-2 Leading Edge Trigger Filter
Usage: Used to ignore spurious triggers when Trigger Mode is set to External
Edge or External Level.
Definition: To consider a change in state on the trigger input, the level must be stable
for the trigger filter duration. In an edge mode, the reader will trigger a read
cycle if the active state has been uninterrupted for the entire trigger filter
duration. In a level mode, the leading edge is filtered such that on an active
edge, the state must be held interrupted for the trigger filter duration before
a trigger will occur.
Serial Cmd: <K200,trigger mode,leading edge trigger filter,trailing edge trigger filter>
Default: 1
Options: 1 to 65535 (Trigger filter range: 32.0 µs to 2.10 seconds)
F-4-3 Trailing Edge Trigger Filter
Usage: Used to ignore spurious triggers when Trigger Mode is set to External
Edge or External Level.
Definition: To consider a change in state on the trigger input, the level must be stable
for the trigger filter duration. In an edge mode, the reader will trigger a read
cycle if the active state has been uninterrupted for the entire trigger filter
duration. In a level mode, the trailing edge is filtered such that on the falling
edge, the state must be held for the trigger filter duration before the trigger
will be deemed inactive.
Serial Cmd: <K200,trigger mode,leading edge trigger filter,trailing edge trigger filter>
Default: 1
Options: 1 to 65535 (Trigger filter range: 32.0 µs to 2.10 seconds)
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