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Ask participant to close eyes and relax. Refrain from talking to
participate or staff.
After good signal data have been collected for at least one minute, SELECT
the green GO button at the top of the screen next to the standby button to begin monitoring the
volume of the pulse pressure. See sample tracing for good tracing. A recording signal icon
should appear pointing to the hard drive.
Set timer to record for 5 minutes. If leaks or problems
occur, stop, replace probes and start over.