TDR (Time Domain Reflectometry) - Option 215
TDR Measurement Settings
Network Analyzer Windows Frequency Span and TDR Window
Selection for Step Rise Time (Approximated)
The following table shows the approximated relationship between the
frequency span and the window selection for impulse width and step rise time.
Refer to
Window
Minimum
Medium
Maximum
Figure 5-1
Network Analyzer TDR Rise Time
TDR Units
By default, X-axis units for TDR measurement settings are displayed in Meters.
How to change TDR units
— With a TDR measurement present, press Freq/Dist.
— Then
— The current selection is underlined
The TDR Units setting is also available on the TDR Settings table.
Calculated TDR values
Press
Values noted on the FieldFox screen with c - <setting>
Keysight N9927-90001 User's Guide
Figure 5-1 on page
Low-pass step
(10% to 90%)
0.45/ f span
0.99 / f span
1.48 / f span
More
then
Distance Unit m
Next Page
on the TDR Settings Table to view the following calculated
79.
Low-pass impulse
0.60 / f span
0.98 / f span
1.39 / f span
feet.
m (meters)
Feet.
Bandpass impulse
1.20 / f span
1.95 / f span
2.77 / f span
79