Mask Testing 16
Keysight InfiniiVision HD3-Series Oscilloscopes User's Guide 223
8 To clear the mask and switch off mask testing, in the Mask Test results window,
select the Edit (pencil) icon button to open the Mask Test dialog box. Then
select Clear Mask.
If infinite persistence display mode (see
"To set or clear persistence" on page 124)
is "on" when mask test is enabled, it stays on. If infinite persistence is "off" when
mask test is enabled, it is switched on when mask test is switched on, then infinite
persistence is switched off when mask test is switched off.
Troubleshooting
Mask Setup
If you select Create Mask and the mask appears to cover the entire screen, check
the ± Y and ± X settings in the Automask dialog box. If these are set to zero the
resulting mask will be extremely tight around the waveform.
If you select Create Mask and it appears that no mask was created, check the ± Y
and ± X settings. They may be set so large that the mask is not visible.
Mask Test Setup Options
In the Setup area of the Mask Test dialog box, you can select these options:
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