Chapter 2 Front Panel Operation
RIGOL
User’s Guide for DSA800E Series
2-23
Sweep and Function Settings
BW/Det
Set the RBW (Resolution Bandwidth), VBW (Video Bandwidth) and detector type
parameters of the analyzer.
RBW
Set the desired resolution bandwidth in order to distinguish between signals which
are close in frequency.
Key Points:
Reducing RBW will increase the frequency resolution, but will increase the
sweep time (Sweep Time is affected by a combination of RBW and VBW when
it is in Auto mode).
RBW varies with the span (non-zero span) in Auto RBW mode.
You can use the numeric keys, the knob, or the arrow keys to modify the
parameter. For more details, please refer to "
".
Note:
If the detector type is "Quasi-Peak" or the filter type is "EMI", RBW can be
200 Hz, 9 kHz or 120 kHz only.
Table 2-13 RBW (Filter Type is Gauss)
Parameter
Explanation
Default
1 MHz
Range
10 Hz to 1 MHz
Unit
GHz, MHz, kHz, Hz
Knob Step
in 1, 3, 10 sequence
Arrow Key Step
in 1, 3, 10 sequence
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