USE3 Physiolab Software Guide - J&J Engineering Biofeedback ...

Physiolab Software Guide 10
Turning the Autogain or Autocenter features on or off for one signal will not
change the settings for the other signals on the screen. Each signal’s settings
are adjusted individually.
The Faster Graph and Slower Graph buttons are used to
increase and decrease sweep speed for all signals except FFT. This
increases/decreases the time span that can be displayed within a single window.
For FFT displays the Faster Graph & Slower Graph buttons change the
frequency span of the FFT displays. It is recommended that you leave FFT
displays at the maximum frequency scale.
The Averaging Interval button changes signal appearance. This button
brings up the Select Averaging Interval window which allows you to increase or
decrease the averaging interval by seconds or fractions of seconds. Increasing
the averaging interval smoothes the selected signal. Decreasing the interval
makes signal detail more visible. DO NOT change the default settings for RAW
signals.
The Zoom button is used to magnify any individual display to fill up the
entire screen. Simply click on the desired display to select it, then click on the
Zoom button. To return to the original display, re-click the Zoom button. This
feature is particularly useful for simplifying feedback to one signal, then toggling
back to a multi-signal display.
Clicking on the Adjust Threshold button is enabled if “THR” is in the
signal name of one of the available signals for a particular display. This button
brings up the Threshold Control window. An empty checkbox indicates that Auto
Threshold is OFF. To turn this feature ON, click in the checkbox next to “Enable
Auto Threshold”. To manually set the threshold, click on the check mark next to
“Enable Auto Threshold” in order to deselect it. Click on the Down/Up arrows
next to the “Level” box or type a numerical value in the box. Close the control
box by clicking on the small x.
Alternatively, you can drag and drop the threshold line on the display screen.
Place the cursor in the display area and click the mouse once to activate the
drag-and-drop feature for that display. As you move the cursor over the threshold
line, a hand appears. Hold down the left mouse button when the hand appears
and drag the threshold line up and down on the screen, releasing the button at
the point where you want the threshold line to stay.