Tdr Start And Stop Distance; Tdr Sweep - Keysight Technologies FieldFox A Series User Manual

TDR (Time Domain Reflectometry) - Option 215
TDR Measurement Settings
— Press
— When finished changing ALL settings, press
The following TDR settings are available ONLY on the settings table:
Mkr Format – The format of marker readout. Choose from:
— Z Magnitude – Impedance (magnitude only)
— Default – The current TDR measurement format.
Auto: Max Freq – When TDR Sweep is set to Auto, this is the maximum stop
frequency of the measurement. The minimum value of this setting is 100 MHz.

TDR Start and Stop Distance

In TDR measurements, you set the physical length of the DUT. The FieldFox
calculates the frequency range of the measurement from this distance. The
longer the DUT, the lower the frequencies that are used.
You can NOT set the frequencies manually in TDR. However, you CAN limit the
maximum frequency using the TDR Sweep setting. Learn more in
on page
How to set Start and Stop Distance
— With a TDR measurement present, press Freq/Dist.
— Then choose from the following:

TDR Sweep

This setting allows you to choose the method by which the Stop Frequency and
Resolution are set.
Keysight N9927-90001 User's Guide
Dock Window to relocate the Settings table to a position relative to
the trace window. The setting persists through a Preset. Choose from the
following:
— Full (Default setting) Only the Settings table is shown on the screen.
The trace window is temporarily not shown.
— Left The Settings table is shown to the left of the trace window.
— Bottom The Settings table is shown below the trace window.
75.
— Start Distance Enter a value using the numeric keypad, the
arrows, or the rotary knob, then Enter. By default, the Start Distance
is set to 0 Meters. This means that the measurement will display
faults starting at the point at which calibration standards are
connected.
— Stop Distance Enter a value between the start distance and 5 km (or
16,404 ft.) using the numeric keypad, the
knob, then Enter.
Done to save your settings.
"TDR Sweep"
arrows, or the rotary
75