Passport 12/Passport 8 Operator’s Manual 18-1
18 Freezing Waveforms
During patient monitoring, the freeze feature allows you to freeze the currently displayed waveforms on the screen so
that you can have a close examination of the patient’s status. Additionally, you can select any frozen waveform for
recording.
18.1 Freezing Waveforms
To freeze waveforms, select the [Freeze] hardkey on the monitor’s front panel.
The system closes the displayed menu (if any), and opens the [Freeze] menu.
All displayed waveforms are frozen, i.e. the waveforms stop being refreshed.
NOTE
The freeze feature does not affect the split-screen view of minitrends, OxyCRG and other patients.
18.2 Viewing Frozen Waveforms
To view the frozen waveforms, you can either:
Select the [Scroll] button and then rotate the knob clockwise or counter-clockwise, or
Directly select the
or beside the [Scroll] button using the touchscreen.
The frozen waveforms will scroll left or right accordingly. And meanwhile, at the lower right corner of the last waveform,
there is an upward arrow. The freeze time displays below the arrow and the initial frozen time is [0 s]. With the
waveforms scrolling, the freeze time changes at intervals of 1 second. This change will be applied for all waveforms on
the screen.
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