User-Defined Events - Nellcor N-200 Operator's Manual

Guide to Operation
Events
The event memory stores a snapshot of concurrent oxygen
saturation, pulse rate, and pulse amplitude measurements.
During the snapshot, measurements are obtained once every
second, resulting in a data display that has higher resolution
than the trend memory. Up to 1 hour of event data may be
stored. Both trend and event data can be printed in graphic
form with either high or low resolution, or output to an
external device capable of printing ASCII characters or
processing and formatting data. See the Connecting to Other
Instruments section for further information on available
formats.
There are two kinds of events: limit events that occur each time
the saturation or pulse rate moves beyond the established
limits, and user-defined events that the operator initiates.
For a limit event, the snapshot starts 30 seconds before the
beginning of the alarm state and ends 30 seconds after the end
of the alarm state. If a limit event lasts longer than
60minutes, only the first 60 minutes of data are recorded. For
a user-defined event, the snapshot starts 30 seconds before the
event is initiated and lasts from 1 to 60 minutes (the operator
selects the duration).

User-Defined Events

Initiating a Fixed Duration User-Defined Event
A user-defined event allows the operator to select times during
which event data is acquired. Starting 30 seconds before the
event is initiated, 1 to 60 minutes of data is stored.
To initiate a user-defined event, press and hold the HIGH
RATE and AUDIO ALARM OFF buttons (UdE 0 appears).
Turn the control knob until the 0 is replaced by the desired
event duration (1 to 60 minutes). Then release the buttons. The
data that is stored in the event memory begins 30 seconds
before the buttons are released.
To change the duration of an ongoing user-defined event, press
and hold the HIGH RATE and AUDIO ALARM OFF buttons.
UdE n appears, with n representing the number of minutes
that remain in the ongoing event.
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