Chapter 2 Functions of the Front Panel of GPSA
RIGOL
RSA3000E User Guide
2-15
In zero span mode, RBW Mode is, by default, set to "Manual".
SPAN/RBW Ratio
Sets the ratio of span to RBW. You can use the numeric keys, the knob, and the arrow
keys on the front panel to modify this parameter; also you can modify it on the
touchscreen. For details, refer to descriptions in "Parameter Setting".
Table 2-13 Span/RBW Ratio
Parameter
Remarks
Default
106
Range
2 to 10,000
Unit
None
Knob Step
at 1-2-5 step
Left/Right Arrow Key Step
Up/Down Arrow Key Step
at 1-2-5 step
SPAN/RBW Mode
Sets the coupling mode of the Span/RBW ratio.
Remarks:
When you set SPAN/RBW Mode to "Auto", "SPAN/RBW Ratio" is in auto
coupling state, and its value is 106. You can set SPAN/RBW Mode to "Manual"
or directly set the SPAN/RBW ratio to change the coupling mode.
When you perform the Preset operation, the coupling state is Auto.
In zero span mode, the SPAN/RBW Mode menu item cannot be set.
