SIGLENT
SSA3000X User Manual 17
Table 2-2 Start Frequency
Zero Span, 0 Hz ~ Full Span
Nonzero Span, 0 Hz ~ (Full Span-100Hz)
Span>0, step=Span/200
Span=0, step=RBW/100
Min 1 Hz
2.1.1.3 Stop Frequency
Set the stop 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 stop frequency. The charge of span would
affect other system parameters. For more details, please refer to “Span”.
In Zero Span mode, the start frequency, stop frequency and center frequency are always the
same.
Table 2-3 Stop Frequency
Zero Span: 0 Hz ~ Full Span
Nonzero Span: 100 Hz ~ Full Span
Span>0, step=Span/200
Span=0, step=RBW/100
Min 1 Hz
2.1.1.4 Freq Step
Set the step of the center frequency. start frequency and stop frequency vary with the step
frequency through arrow keys. In process of using pay attention to the following points:
At a fixed step change the value of the center frequency can reach the purpose of
continuous measurement channel switch.
There are two kinds of frequency step mode:Auto and manual. In Auto mode, the Freq step
is 1/10 of the span in Non-zero span mode or equals the RBW while in Zero span mode; in
Manual mode; you can set the step using the numeric keys.
Table 2-4 Frequency step