BC Biomedical PFC-3000 SERIES, User Manual, Page: 48 / 90

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7.14.4 Usage of an External
Trigger
(1) External. An external trigger signal is used to calculate
the volume (> 6.4.3 External Trigger).
(2) Start. Specify whether volume measurement should take
place upon a rising or falling edge in the signal.
(3) Reset . Press the assigned reset key to load the default
values for the trigger. Most volumes can be measured
with these settings.
(4) Baseflow. Here you can specify the baseflow. The
baseflow is a constant flow which should not be included
in the calculation. If this function has been selected, a
corresponding symbol appears in the display (> 7.6
Numerical Display).
(5) Change . This key takes you to edit mode, where you can
change the corresponding variable.
(6) The Delay prevents that a single spot will release a
trigger.
(7) Numerical . Press this key to exit the statistics display.
The numerical display returns.
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