Keysight N9923A FieldFox User Manual page 119

 Limit lines are available in CAT Mode and NA Mode. Power Meter Mode uses
 Limit lines and limit testing are NOT allowed in NA Mode with Smith Chart or Polar
 Limit lines can be saved and recalled with an *.sta file. Learn more on page 124.
How to Create Fixed Limit Lines
There are two ways to build a Fixed limit line:
1. Build (limits) From a Trace. Learn how on page 120
2. Enter X/Y data points into the on-screen editor. The limit line is formed as the
 Press Limit 8.
 Then
 Use the Up / Down arrows and rotary knob to navigate the cursor to the following
 Press
 Press
Data Analysis Features
different limit settings. Learn more on page 83.
display formats.
They can also be saved and recalled independently from the Limit softkeys. Learn
more on page 121.
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.
Limits. A limit line table appears.
Edit
editable cells.
Description - Press Edit, then enter a description for the limit line using the
o
FieldFox labeler (learn how on page 124).
Fixed/Relative – Press
o
Fixed - the limit line does not move. The X/Y coordinates are absolute
o
locations on the screen.
Relative - the limit line moves relative to the center frequency and reference
o
level. Note: It is easiest to first create Fixed Limits, then change this setting to
Relative. Learn more on page 120.
Upper/Lower – Press
o
Upper - FAILS any measured data point ABOVE the line.
o
Lower - FAILS any measured data point BELOW the line.
o
Off/On – Press to toggle between the following:
Edit
o
On - Limit line is drawn on the screen and PASS/FAIL testing occurs.
o
Off - Limit line is NOT drawn on the screen and testing does NOT occur.
o
Frequency – Enter a numeric X-axis value of the data point.
o
Amplitude – Enter a numeric Y-axis value of the data point.
o
then choose from the following:
Add
- Adds a blank X/Y data point below the cursor.
Add Point
o
- Adds a default limit line below the current limit.
Add Limit
o
then choose from the following:
Clear
- Removes the X/Y data point on which the cursor resides.
Clear Point
o
- Removes the limit Line on which the cursor resides.
Clear Limit
o
- Removes ALL limit lines.
Clear All
o
to toggle between the following:
Edit
to toggle between the following:
Edit
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