Tektronix WFM8200 User Manual page 140

Checking Gamut
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3. Select Alarms and then Video Content. A dialog box appears where you can
select for the various Video Content alarms.
4. Use the up/down arrow keys to move to each of the alarms that you want to
set. Press the SEL button to toggle the alarm on (X) or off.
5. When you have configured the Alarms as you want them, move to the Select
here box and select it.
6. Back in the Alarms menu, check that Enable Alarms is set to On before
exiting the Alarms menu.
WFM8200 and WFM8300 Waveform Monitors