Performing Mask Tests; To Create A Mask From A "Golden" Waveform (Automask) - Agilent Technologies 7000B Series User Manual

16 Analyzing Data

Performing Mask Tests

One way to verify a waveform's compliance to a particular set of
parameters is to use mask testing. A mask defines a region of the
oscilloscope's display in which the waveform must remain in order to
comply with chosen parameters. Compliance to the mask is verified
point- by- point across the display. Mask test operates on displayed analog
channels; it does not operate on channels that are not displayed.
To enable mask test order option LMT at time of oscilloscope purchase, or
order N5455A as a stand- alone item after oscilloscope purchase.

To create a mask from a "golden" waveform (Automask)

A golden waveform meets all chosen parameters, and it is the waveform to
which all others will be compared.
1 Configure the oscilloscope to display the golden waveform.
2 Press the [Analyze] key.
3 Press Features; then, select Mask Test.
4 Press Features again to enable mask testing.
5 Press Automask.
6 In the Automask Menu, press the Source softkey and ensure the analog
7 Adjust the mask's horizontal tolerance (± Y) and vertical tolerance (±
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channel from which to create the mask is selected.
X). These are adjustable in graticule divisions or in absolute units (volts
or seconds), selectable using the Units softkey.
InfiniiVision 7000B Series Oscilloscopes User's Guide