SIGLENT
SSA3000X User Manual 15
2.1 Basic Settings
2.1.1 Frequency
Set the frequency parameters and functions of the analyzer. Restart sweeping every time when the
frequency parameters are modified.
The frequency range of a channel can be expressed by either of three groups of parameters: Start
Frequency, Center Frequency and Stop Frequency. If any of the parameters is changed, the
others would be adjusted automatically in order to ensure the coupling relationship among them
startstopspan
stopstartcenter
fff
)/2f(ff
, The
is span.
2.1.1.1 Center Frequency
Set the center frequency of the current channel. The center frequency and span values are
displayed at the lower left and right sides of the grid respectively. In process of using pay attention
to the following points:
The start and stop frequencies vary with the center frequency when the span is constant
(except the Start Frequency and Stop Frequency to the border).
In Zero Span, the start frequency, stop frequency and center frequency are always the same.
Table 2-1 Center Frequency
Zero Span, 0 Hz ~ Full Span
Nonzero Span, 50 Hz ~ (Full Span -50Hz)
Span>0, step=Span/200
Span=0, step=RBW/100
Min 1 Hz
2.1.1.2 Start Frequency
Set the start frequency of the current channel. The start and stop frequencies are displayed at the
lower right sides of the grid respectively. In process of using pay attention to the following points:
The span and center frequency vary with the start frequency when the Span did not reach
the minimum (The parameters vary with the span, please refer to “Span”);
In Zero Span, the start frequency, stop frequency and center frequency are always the same.
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