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SIGLENT

20 SSA3000X User Manual

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 use process 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

mode, the start frequency, stop frequency and center frequency are always the same.

Table 2- 2 Start Frequency

Parameter

Explanation

Default

0 GHz

Range

Zero Span, 0 Hz ~ Full Span

Nonzero Span, 0 Hz ~ （Full Span-100Hz）

Unit

GHz\MHz\kHz\Hz

Knob Step

Span>0, step=Span/200

Span=0, step=RBW/100

Min 1 Hz

Direction Key Step

CF step

Related to

Center Freq, Span

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 use process 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

Parameter

Explanation

Default

Full Span

Range

Zero Span: 0 Hz ~ Full Span

Nonzero Span: 100 Hz ~ Full Span