Keysight N9912A - Window Settings; DTF Units

Keysight N9912-90001 User’s Guide 4- 25
DTF (Distance to Fault) Measurements
DTF Measurement Settings
The correction for loss at 5 meters in one direction: 0.18 dB/m * 5m = 0.9 dB.
All DTF measurements correct for loss for travel down the DUT and back, so
double the correction: 0.9 dB * 2 = 1.8 dB.
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
—Press Meas Setup 4.
—Then Settings
.
— Then press arrows to move to the Window row.
—Then press Ed it
.
—Then press Window
and choose from the following:
— Maximum
(Optimized for dynamic range) the noise floor is lowered
to provide the ability to measure low-level responses. (Default
setting)
— Medium
– Compromise between Min and Max window settings.
— Minimum
– Best Response Resolution, providing the ability to resolve
between two closely-spaced responses.
—Then press Done Edit
.
—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.
— Select DTF Units.
—Then Choose from:
— M (meters)
— Feet
1.8 GHz = 0.18 dB/m
2 GHz = 0.2 dB/m