Keysight Technologies C Series - Page 167

Keysight N9915-90020 User’s Guide 167
SA (Spectrum Analyzer) Mode (Option 233–Mixed Analyzers)FUTURE
SA Mode Settings
setting) if you just want standard Amplitude units, with a
simple dB offset supplied by the correction table. This
makes the correction basically identical to a Cable
correction. To get Field Strength units, you must choose
either dB /m (E-field or dipole antenna), or dB S/m
(H-field or loop antenna) to properly identify the Antenna
Factors in the table. The scalar measurement Amplitude
units (either standard or Field Strength) will then be
available at Ampl/more Unit. Learn how in
“Scale and
Units” on page 159
. For details on standard Amplitude
units, refer to
“How to Set Y-axis Units” on page 160.
—
Freq Interpolation: Set to LINear by the FieldFox and can
NOT be edited.
— To edit
Frequency/Value pairs, enter numbers using the numeric
keypad, and a frequency suffix when necessary.
— For both
Cable Loss and Antenna Factor values, Positive
numbers indicate loss (we need ADD something positive to
compensate for it), and Negative is indicative of some
existing gain.
—
Antenna Factor describes the dB value needed to
accurately display a far-field signal in terms that are in the
units listed below. When the antenna has low gain, or low
efficiency, the dB value to be added is larger.
—
Antenna Factor Unit sets the type of antenna factor unit
used in your measurement (i.e., dB /m or dB S/m).
— When one Freq/Value pair is entered, that correction value is
applied to the entire displayed frequency span.
— When two or more Freq/Value pairs are entered, the data points
between the lowest and highest frequencies are corrected. Linear
interpolation is applied between frequencies when necessary.
5. Optionally choose from the following:
—
Previous / Next Page
Quickly scrolls through pages of Freq/Value
data.
— Add Row Add a blank Freq/Value pair to the table,
—
Delete/Clear then:
— Delete Row Remove the selected Freq/Value pair from the
table.
— Clear All then Yes Remove all Freq/Value pairs from the
table and resets header information to default settings.
When the table edits are complete