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SIGLENT
User Manual 115
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”.
Table 7-3 Start Frequency
Parameter
Explanation
Default
30 MHz
Range
0 Hz ~ (Full Span-100Hz)
Unit
GHz, MHz, kHz, Hz
Knob Step
Span/200, min 1 Hz
Direction Key Step
Span/10
Related to
Center Freq, Span
7.2.1.4 Stop Frequency
Set the stop frequency of scan. The start and stop frequencies are displayed at the lower right sides of
the grid respectively.
● The span and center frequency vary with the stop frequency. The change of the span will affect
other system parameters. For more details, please refer to “Span”.
Table 7-4 Stop Frequency
Parameter
Explanation
Default
300 MHz
Range
Nonzero Span: 100 Hz ~ Full Span
Unit
GHz, MHz, kHz, Hz
Knob Step
Span/200, min 1 Hz
Direction Key Step
Span/10
Related to
Center Freq, Span
7.2.2 Span
Set the span of scan. Any change of this parameter will stop the running sequence.
● Zero-span is invalid in EMI Measurement mode.
7.2.2.1 Span
Set the frequency range of scan.
● The start and stop frequency vary with the span when the center frequency is constant.
● The span can be set down to 100 Hz and up to the full span described in Specifications. When the
span is set to the maximum, the analyzer enters full span mode.
● Modifying the span may cause an automatic change in RBW if they are in Auto mode.
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