Tdr Units; Calculated Tdr Values - Keysight FieldFox B Series User Manual

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 N9938-90006 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
85.
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
85