276 Keysight InfiniiVision 3000T X-Series Oscilloscopes User's Guide
16 Mask Testing
 
5 Press Automask.
6 In the Automask Menu, press the Source softkey and ensure the desired analog 
channel is selected.
7 Adjust the mask's horizontal tolerance (± Y) and vertical tolerance (± X). These 
are adjustable in graticule divisions or in absolute units (volts or seconds), 
selectable using the Units softkey.
8 Press the Create Mask softkey.
The mask is created and testing begins.
Whenever the Create Mask softkey is pressed the old mask is erased and a new 
mask is created.