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SIGLENT
Chapter 6 Real-Time Spectrum Analyzer
The model supported by real-time spectrum analysis is SSA3000X-R series.
6.1 Basic Settings
6.1.1 Frequency
Set the frequency-related parameters and functions of the analyzer. The sweep will restart when the
frequency parameters are modified.
There are three main parameters related to frequency range: start frequency, center frequency and end
frequency. the coupling relationship among them:
startstopspan
stopstartcenter
fff
)/2f(ff
−=
+=
, Where
span
f
is the span.
6.1.1.1 Center Frequency
Set the center frequency of the current sweep. The center frequency and span values are displayed at
the bottom of the grid respectively.
● Modifying the center frequency will modify both the start frequency and stop frequency when the
span is constant (except when the start frequency or stop frequency reaches the boundary).
Table 6-1 Center Frequency
Parameter
Explanation
Default
20MHz
Range
2.5 kHz ~ (Full Span -2.5kHz)
Unit
GHz, MHz, kHz, Hz
Knob Step
Step=Span/200
Direction Key Step
4Mhz
Related to
Start Freq, Stop Freq
6.1.1.2 Start Frequency
Set the start frequency of the current sweep. The start and stop frequencies are displayed at the bottom
of the grid respectively.
● The span and center frequency vary with the start frequency when the Span does not reach the
minimum. For more details, please refer to “Span”.
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