72 Keysight N9915-90015 User’s Guide
DTF (Distance to Fault) Measurements
DTF Measurement Settings
Window Settings
Window settings provide the ability to choose between optimizing DTF
measurements for resolving closely-spaced faults or for the ability to measure
low-level faults.
How to select Window settings
1. Press Meas Setup 4
> Settings
2. Then press arrows to move to the Window row.
3. Then press
Edit.
4. Then press
Window
and choose from the following:
— Maximum (Maximum – Optimized for dynamic range) the noise
floor is lowered to provide the ability to measure low-level
responses. (Default setting)
— Medium – Compromise between Minimum and Maximum window
settings.
—
Minimum – Best Response Resolution, providing the ability to
resolve between two closely-spaced responses.
5. Then press
Done Edit
.
6. Again press
Done.
DTF Units
The DTF Units setting is available ONLY on the DTF Settings table.
By default, X-axis units for DTF measurement settings are displayed in Meters.
How to change DTF units
1. With a DTF measurement present, press Freq/Dist
.
2. Then
More then Distance Unit m feet.
3. The current selection is underlined
m (meters) Feet.
Calculated DTF values
Press Next Page on the DTF Settings Table to view the following calculated
Values noted on the FieldFox screen with c - <setting>
Start Frequency – Start frequency that is used to calculate DTF.
Stop Frequency – Stop frequency that is used to calculate DTF.