SPA-900 Series User Manual 26
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 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
Freq 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 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
Parameter
Explanation
Default
Full Span
Range
Zero Span: 0 Hz ~ Full Span
Nonzero Span: 100 Hz ~ Full Span
Unit
GHz\MHz\kHz\Hz
Knob Step
Span>0, step=Span/200
Span=0, step=RBW/100
Min 1 Hz
Direction Key Step
Freq step
Related to
Center Freq, Span
Distributed by: Reliant EMC LLC, +1 408 916
‐
5750, info@reliantemc.com, www.reliantemc.com
