Agilent Technologies FieldFox N9913A User Manual

DTF (Distance to Fault) Measurements 35
 Then use the ▲|▼ arrows to select a field,
o When editing Cable Description information, press Edit then modify the
selected field using the FieldFox labeler.
o When editing Frequency/Loss pairs, enter numbers using the numeric
keypad, then select a frequency suffix. Then Enter. Learn more about “How
the Freq/Loss pairs are applied” below.
 Optionally choose from the following:
o Previous / Next Page Quickly scrolls through pages of Freq/Loss data.
o Add Data Add a blank Freq/Loss pair to the table,
o Delete/Clear then:
o Delete Line Remove the selected Freq/Loss pair from the table.
o Clear All then Yes Remove all Freq/Loss pairs from the table and resets
header information to default settings.
 Press Done to close the Cable Editor.
How to Save or Recall a Cable
 Press Save Cable to saves your changes to the specified Storage Device. Enter
a filename using the FieldFox labeler (learn more on page 164). Learn more
about Cable files below.
 Press Recall Cable to load a Cable file from the specified Storage Device.
 Storage Device Changes the device used to save or recall Cable files. This is a
different setting from the Save/Recall Storage Device setting. Choose from
Internal (default setting), USB (must be connected) or SD card.
About Cable files
 Cable files are saved to, and recalled from, the Cables folder. If the folder does
not already exist on a USB or SD card, it is created automatically before
storing the file.
 Cable files are stored as *.xml files. Existing cable files that are preloaded into
the FieldFox firmware can be overwritten. Your edited file will NOT be
overwritten when firmware is updated.
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:
1 GHz: 0.1 dB/m
2 GHz: 0.2 dB/m
The center frequency for the measurement is determined from the calculated
(Stop – Start) frequency values (seen on the second page of DTF Settings):
Calculated Start = 2.0 MHz
Calculated Stop = 3.598 GHz

Agilent Technologies FieldFox N9913A Specifications

General

Brand	Agilent Technologies
Model	FieldFox N9913A
Category	Measuring Instruments
Language	English