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SIGLENT
SSA3000X User Manual 20
◆ In non-zero span mode, neither is “Video” trigger nor “1/time” readout function valid.
Table 2-5 Span
Parameter
Explanation
Default
Maximum bandwidth
Range
0 Hz~ 3.2 GHz
Unit
GHz, MHz, kHz, Hz
Knob Step
Span/200, Min = 1 Hz
Direction Key Step
In 1-2-5 sequence
Related to
Start Freq, Stop Freq, Freq Step, RBW, Sweep time
Note: 0 Hz is available only in zero span.
2.1.2.2 Full Span
Set the span of the analyzer to the maximum.
2.1.2.3 Zero Span
Set the span of the analyzer to 0Hz. Both the start and stop frequencies will equal the center frequency
and the horizontal axis will denote time. The analyzer measures the time domain characteristics of the
amplitude of the corresponding frequency point on the input signal. In process of using pay attention to
the following points:
The following functions are invalid in Zero span mode: Peak ->CF, Signal Track, Zoom In and Zoom
Out.
◆ Frequency: Peak->CF;
◆ SPAN: Zoom In and Zoom Out;
◆ Marker-> : M ->CF, M->CF step, M->Start Freq, M->Stop Freq, M->CF and M->Span;
◆ Marker: Frequency, Period and 1/Time(valid in Delta marker type);
2.1.2.4 Zoom In
Set the span to half of its current value. At this point, the signal on the screen is zoomed in to observe
signal details.
2.1.2.5 Zoom Out
Set the span to twice the current value. At this point, the signal on the screen is zoomed out to gain
more information about the signal.
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