Philips V200 - Manual (Page 240)

Chapter 13
13-76 Respironics V200 Ventilator Operator’s Manual REF 1057983 A
Options and Accessories
Figure 13-38: Selecting the Time Scale for the Trending Screen
Using the +2 Hrs/-2
Hrs buttons
The +2 Hrs and –2 Hrs buttons shift all three
waveforms forward or backward by two hours without
changing the time scale. If you press and hold the
buttons, the time scale shifts every ½ second. If less than 2 hours of data
exist, the waveform shifts by the amount of available data. The buttons are
grayed if the waveform cannot shift any further.
Using the Zoom
Function
The Zoom button allows you to zoom in on trended data by
switching the time scale to two hours, centered around the cursor
position. If the current time scale is two hours, the zoom button is
grayed.
When the Zoom button shows a magnifying glass with a plus (+) sign, the
“zoom in” function is available. Once zoomed in, the button changes to a
magnifying glass with a minus (-) sign to indicate that the “zoom out” function
is available, and the Time and View buttons are disabled. Zooming out returns
the waveforms to their previous time scale and all buttons to their previous
states.
Using the Rescale
Button
The Rescale button automatically adjusts the vertical axis for
all three waveforms. The software determines a scale based on
the minimum and maximum values of the data to display an
optimal view.
Grayed-out
button
indicates that
the time scale
is not
available