
To create a mask template using Autostore
An envelop of the passing region can be generated using the Autostore
function. Then the Automask function can read the autostore screen
information and take the maximum and minimum limits of it as the limit lines
of the mask template. This process allows you to create a mask template
from a known good signal, allowing certain tolerance margins.
1 Connect a known good signal to the oscilloscope.
2 Set up the oscilloscope with the settings that are required to test the
signal.
3 Press Display , then toggle the Grid softkey to the off position.
4 Press Autostore .
Make sure that STORE is displayed in the status line. If STORE is not
displayed, press Autostore again.
5 Set the voltage tolerance by moving the waveform up and down with
the vertical position knob, creating a vertical envelop.
6 Set the time tolerance by moving the waveform back and forth with
the horizontal delay knob, creating a horizontal envelop.
You may need to repeat steps 5 and 6 to fine tune the envelop. Cursors can
be used to accurately measure the margins.
7 Press Print/Utility twice.
8 Press the Sequence Admin softkey.
9 Press the Define Automask softkey.
10 Turn the knob closest to the Cursors key to select the mask number.
Operating the Test Automation Module
To create a mask template using Autostore
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