Keysight Technologies FieldFox A Series, User Manual

Page: 81 / 756

Keysight N9927-90001 User’s Guide 81
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 Figure 5-1 on page 81 .
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 More then Distance Unit m feet .
— The current selection is underlined m (meters) Feet .
The TDR Units setting is also available on the TDR Settings table.
Calculated TDR values
Press Next Page on the TDR Settings Table to view the following calculated
Value s noted on the FieldFox screen with c - <setting>
Window Low-pass step
(10% to 90%)
Low-pass impulse Bandpass impulse
Minimum 0.45/ f span 0.60 / f span 1.20 / f span
Medium 0.99 / f span 0.98 / f span 1.95 / f span
Maximum 1.48 / f span 1.39 / f span 2.77 / f span