Keysight N9912A User Manual page 35

 Press
How to Save or Recall a Cable
 Press
 Press

About Cable files
 Cable files are saved to, and recalled from, the Cables folder. If the folder does not
 Cable files are stored as *.xml files. Existing cable files that are preloaded into the
How the Freq/Loss pairs are applied
When the cable file contains one Freq/Loss pair, that correction value is applied to
the entire displayed frequency span.
When the cable file contains two or more Freq/Loss pairs, the Loss value that is used
is interpolated from the Freq/Loss pairs and the DTF center frequency. For example,
using a cable file with the following Freq/Loss pairs:
The center frequency for the measurement is determined from the calculated (Stop –
Start) frequency values (seen on the second page of DTF Settings):
The Loss value for the measurement is interpolated from the Freq/Loss pairs at the
Center Freq:
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.
DTF (Distance to Fault) Measurements
Previous / Next Page
o
Add a blank Freq/Loss pair to the table,
Add Data
o
then:
Delete/Clear
o
Remove the selected Freq/Loss pair from the table.
Delete Line
o
then
Clear All Yes
o
header information to default settings.
to close the Cable Editor.
Done
to saves your changes to the specified Storage Device. Enter a
Save Cable
filename using the FieldFox labeler (learn more on page 162). Learn more about
Cable files below.
Recall Cable to load a Cable file from the specified Storage Device.
Changes the device used to save or recall Cable files. This is a
Storage Device
different setting from the Save/Recall Storage Device setting. Choose from
Internal (default setting), USB (must be connected) or SD card.
already exist on a USB or SD card, it is created automatically before storing the
file.
FieldFox firmware can be overwritten. Your edited file will NOT be overwritten
when firmware is updated.
1 GHz: 0.1 dB/m
2 GHz: 0.2 dB/m
Calculated Start = 2.0 MHz
Calculated Stop = 3.598 GHz
Center Freq = 1.80 GHz
1 GHz = 0.1 dB/m
1.8 GHz = 0.18 dB/m
2 GHz = 0.2 dB/m
Quickly scrolls through pages of Freq/Loss data.
Remove all Freq/Loss pairs from the table and resets
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