All About Limit Lines; How To Create Fixed Limit Lines - Keysight N9912A User Manual

Data Analysis Features

All about Limit Lines

All about Limit Lines
Limit lines are visual representations, drawn on the FieldFox screen, of the
specified limits for a measurement. With this capability, you can easily
compare measured data versus specifications. Optionally, you can enable an
audible beep and display Pass or Fail information for each measurement.
— You can have up to as many limit line segments as there are data points for
— Limit lines are available in CAT Mode, NA Mode, and SA Mode. Power Meter
— Limit lines and limit testing are NOT allowed in NA Mode with Smith Chart
— A simple Display Line is also available in SA Mode ONLY. Learn more in
— Limit lines can be saved and recalled with an *.sta file. Learn more in

How to Create Fixed Limit Lines

There are two ways to build a Fixed limit line:
1. Build (limits) From a Trace. Learn how in
2. Enter X/Y data points into the on-screen editor. The limit line is formed as
— Press Limit 8.
— Then
— Use the Up / Down arrows and rotary knob to navigate the cursor to the
16- 14
each measurement trace allowing you to test all aspects of your
measurements.
Mode uses different limit settings. Learn more in
or Polar display formats.
"Display Line" on page
"Saving and Recalling Files" on page
recalled independently from the Limit softkeys. Learn more
and Recall Limits" on page
page 16-16.
the FieldFox 'connects the dots' on the screen. To create frequency gaps
that are NOT tested, use separate limit lines. The X-axis values for two
lines can overlap.
Ed it Limits. A limit line table appears.
following editable cells.
— Description - Press
using the FieldFox labeler. Learn how in
labeler" on page
— Fixed/Relative – Press
——Fixed - the limit line does not move. The X/Y coordinates are
absolute locations on the screen.
8-31.
17-2. They can also be saved and
16-17.
"Build From Trace" on
Ed it, then enter a description for the limit line
17-3.
Ed it to toggle between the following:
Keysight N9912-90001 User's Guide
"Limits" on page 11-8.
in"How to Save
"How to use the FieldFox