Keysight N9938-90006 User’s Guide 179
SA (Spectrum Analyzer) Mode (Option 233–Mixed Analyzers)
SA Mode Settings
—
Highpass Filter None
– then choose:
—
HPF 3 dB Cutoff 500.000 Hz
– When the Highpass Filter is set to
Custom
, sets the customized HPF 3 dB cutoff frequency for the
highpass filter (Default = 500 Hz; Minimum = 20 Hz, Maximum =
Varies, depending on the AF Span).
—
Bandpass Filter None
– Sets the Bandpass Filter for the current
measurement (Choices: None, CCITT, A-Weighted, C-Weighted,
C-Message, CCIR-1k Weighted, CCIR-2k Weighted, or CCIR
Unweighted). Default = None.
—
More
–
FM and FM Stereo only
. Opens a softkey menu to
enable/disable the De-Emphasis softkeys.
——
De-Emphasis OFF ON
– Enables/disables the de-emphasis
applied to the demodulated signal.
——
De-Emphasis T
– Sets the amount of de-emphasis applied to
the demodulated signal.
Setting the Marker Counter Gate Softkey
When
AM Metric
or
FM Metric
are selected, you can choose from the
following:
— Press
Marker
>
Peak
— Press
Mkr->/Tools
>
More
>
Mkr Properties
>
Counter Gate
– Sets the AM
or FM Tune & Listen demodulated signal’s counter window time
(Minimum = 1 ms and Maximum = 2s; default = 100 ms).
The Counter Gate softkey is
not
available when AM Tune & Listen, FM
(narrow) Tune & Listen, or FM (wide) Tune & Listen are enabled. Refer to
.
None
No highpass filter is selected.
20 Hz
2-Pole Butterworth HPF with 3 dB cutoff frequency
of 20 Hz.
50 Hz
2-Pole Butterworth HPF with 3 dB cutoff frequency
of 50 Hz.
300 Hz
2-Pole Butterworth HPF with 3 dB cutoff frequency
of 300 Hz.
400 Hz
10-Pole Butterworth HPF with 3 dB cutoff
frequency of 400 Hz.
Custom
5-Pole Butterworth HPF with a custom 3 dB cutoff
frequency (determined by the HPF 3 dB Cutoff
setting).
Summary of Contents for N9913B
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Page 724: ...724 Keysight N9938 90006 User s Guide Noise Figure Mode Option 356 Troubleshooting ...
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