Table 5-23 - Viavi CX100 ComXpert Operation Manual

5.2.10.1.2 AF Analyzer Frequency Domain Instrument Settings
The Frequency Domain Instrument Settings menu accesses the controls and
settings that define how the AF Analyzer receives and processes an incoming signal.
Control/Setting
Port
Coupling
Reference Level
Frequency Mode
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August 2023
Table 5-23 Frequency Domain Instrument Settings
Description
The AF Analyzer Port menu selects which input port is being
used to receive the incoming signal.
Audio In
Audio In should be selected to analyze an incoming audio
signal.
Demod
Demod should be selected to analyze the demodulated
portion of an incoming RF signal
The Coupling menu accesses settings that define the
Resolution Bandwidth (RBW) and acquisition time that the
Analyzer uses to filter the signal.
Resolution Bandwidth (RBW)
RBW filters are the bandpass filters in the IF path that
determine the RF Noise floor and how close two signals can
be and still be viewed separately on the analyzer.
A narrower RBW setting more clearly displays close signals
as separate signals, however, a narrower bandwidth setting
results in a longer sweep time.
An RBW setting that is too wide causes signals that are
closed together to appear as one signal.
Auto: When Auto is selected, the system sets RBW to a
filter appropriate to the characteristics identified in the
received signal
Manual: When Manual is selected, the user can manually
define the RBW.
The Reference Level field sets the top value on the display
graph. The Reference Level can be set to any value within the
specified range. The Reference Level of the display must be
set so that the RF signal level falls within the display area.
Frequency Mode selects the method used to define the span
of the analyzer plot field. Parameters update according to the
type of mode selected.
Full Span Frequency Mode
When Full Span is selected, the span defaults to the
instrument's full frequency range. The UI updates to display
the start and stop frequencies as read-only data fields.
CX100 ComXpert Operation Manual
Chapter 5 RF Instrument Function Descriptions
RF Test
Rev 002
5 - 45