52 Keysight N9938-90003 User’s Guide
DTF (Distance to Fault) Measurements
How to make DTF Measurements
Optional settings
How to make DTF Measurements
Before starting, you may need the following:
— Jumper cable or adapter to connect the beginning of the DUT to the
FieldFox.
— LOAD with correct connector type and gender to terminate the end of the
DUT (if possible).
— The known length and cable type of the DUT. If the cable type is not known,
then the Cable Loss (dB/Meter) and Velocity Factor of the DUT are required.
1. Connect any necessary jumper cable or adapter to the FieldFox RF OUT
port. Do NOT connect the DUT.
2. Press Preset
then Preset to return the FieldFox to the default settings.
3. Then Mode
then CAT.
4. Then Meas 1
then DTF.
5. Press Freq/Dist
, then Stop Distance and enter the length of the DUT. You
can optionally set the Start Distance
6. Press Cal 5
and follow the Cal prompts. Learn all about Calibration in
“How to Perform a Calibration” on page 89.
7. Disconnect any components or antenna that should NOT be measured and
connect a LOAD at the end of the DUT.
8. Press Meas Setup 4
then DTF Cable Specifications.
“Coupled Frequency” on page 56
“Cable (Correction) Specifications” on page 57
“Window Settings” on page 60
“DTF Units” on page 61
“Calculated DTF values” on page 61
“About Alias Faults” on page 61
“All about Markers” on page 190
“All about Limit Lines” on page 205
“Saving and Recalling Files” on page 266
Trace Math is NOT available in DTF Measurements.
To Next Page
Loading...
Need help?
General
