Tektronix SPECMON3 Manual page 216

RF Measurements
Mask Tab for Settling Time Displays
The Mask tab is used to specify the parameters used for Mask testing.
Enable Mask Test
Enables or disables mask testing.
Start 1, 2, 3
Sets the starting point for the time zone of interest. If you don't want to use all three zones, set the Start
Time for the unneeded zones to a time after the end of the Measurement Length.
Stop
Sets the end point for the final time zone of interest.
Limit (+/-)
Sets the mask violation limits for each time zone.
Mask Time Reference
When mask testing is enabled, the Mask time reference selection specifies the starting point of the mask.
You can choose to start the mask test at the trigger point or at the point on the trace where the signal began
its transition from its previous settled frequency or phase level to the level you intend to measure.
This capability is useful because some applications do not have a trigger signal available. For those
situations where a trigger signal is available, the specification for the device-under-test may require
that measurements be referenced to that signal.
Trace Tab for Settling Time Displays
The Traces Tab allows you to set the display characteristics of displayed traces.
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Mask Tab for Settling Time Displays
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