94    WM-OM-E Rev I 
Sinx/x interpolation. 
4.  Touch the button for the type of interpolation you want. 
Inverting Waveforms 
Touch the Invert checkbox to invert the waveform for the selected channel. 
QuickZoom 
QuickZoom automatically displays a zoom of the channel or trace on a new grid. 
To Turn On a Zoom 
Touch the Zoom button 
 in the channel dialog. 
Finding Scale 
You can access the Find Scale button from the channel setup dialog. This feature automatically 
calculates peak-to-peak voltage, and chooses an appropriate Volts/Div scale to fully display the 
waveform. 
To Use Find Scale 
1.  Touch the trace label for the waveform you desire. 
2. Touch the Find Scale icon. 
Variable Gain 
Variable Gain lets you change the granularity with which the gain is incremented. For example, 
when Variable Gain is disabled, the gain will increase or decrease in preset increments of 10 or 
100 mV each time you touch the Up/Down buttons. 
However, when Variable Gain is enabled, you can increase or decrease the gain in increments as 
small as 1 mV, depending on the scale of the waveform. 
To Enable Variable Gain 
1.  Touch the descriptor label for the waveform whose gain you want to vary. 
2. Touch the Variable Gain check box. 
Channel Deskew 
Unlike the Deskew math function, channel Deskew does no resampling, but instead adjusts the 
horizontal offset by the amount that you enter. The valid range is dependent on the current 
timebase +/- 9 divisions. 
To Set Up Channel Deskew 
1.  In the menu bar, touch Vertical; from the drop-down menu, select a channel to set up. 
2.  Touch inside  the Deskew data entry field and enter a value using the pop-up numeric 
keypad.