ACR Electronics SmartReader Plus Reference Manual page 81

SmartReader Plus Data Logger
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TrendReader software.
Figure A-1: Monitoring Switch Status
When monitoring the status of a switch with your data logger, keep in mind that the logger will
not detect more than one change per sample period. For this reason, use a fast sample rate if
you expect the switch to open and close frequently.
The type of graph produced when monitoring switch status is a square wave that rises to a
maximum value when the switch is closed, and falls to a minimum value when the switch is
open.
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