Relative Limit Lines - Keysight Technologies FieldFox N9912A104 User Manual

Data Analysis Features
All about Limit Lines
— Press
— Press
— Press <Back to return to the Limit menu.

Relative Limit Lines

Relative limit lines are X/Y coordinates that are referenced to the center
frequency (X-axis) and Reference level (Y-axis).
Use relative limits to test devices or signals that are identical except for the
center frequency or amplitude. With relative limit lines in place, you change the
center frequency of the measurement and the limits look as though they are in
the same location.
The same is true for Reference Level. When you expect to measure a different
power level, instead of changing the Y-axis value of all of the fixed limits,
simply change to relative limits. The limits will then remain a constant Y-axis
distance from the Reference Level.
Each limit line can be changed at any time from Fixed to Relative, and Relative
to Fixed.
Keysight N9912-90001 User's Guide
——Relative - the limit line moves relative to the center frequency
and reference level. Note: It is easiest to first create Fixed
Limits, then change this setting to Relative. Learn more
"Relative Limit Lines" on page
— Upper/Lower – Press
——Upper - FAILS any measured data point ABOVE the line.
——Lower - FAILS any measured data point BELOW the line.
— Off/On – Press Ed it
——On - Limit line is drawn on the screen and PASS/FAIL testing
occurs.
——Off - Limit line is NOT drawn on the screen and testing does
NOT occur.
— Frequency – Enter a numeric X-axis value of the data point.
— Amplitude – Enter a numeric Y-axis value of the data point.
Add then choose from the following:
— Add Point - Adds a blank X/Y data point below the cursor.
— Add Limit - Adds a default limit line below the current limit.
Clear then choose from the following:
— Clear Point - Removes the X/Y data point on which the cursor
resides.
— Clear Limit - Removes the limit Line on which the cursor resides.
— Clear All - Removes ALL limit lines.
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Ed it to toggle between the following:
to toggle between the following:
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