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Key Reference
BW/Avg
VBW/RBW
Auto Man
Sets the ratio between the video and resolution bandwidths.
When a signal is weak and is visually masked by the noise
floor, set the ratio to less than 1 to lower the noise. When
the Preset Type is set to Factory and Preset is pressed, the
ratio is set to 1. Change the ratio by using the arrow keys,
knob, or numeric keypad. When VBW/RBW (Auto) is selected,
the ratio is determined automatically by the rules in
Figure 4-1.
Figure 4-1 VBW/RBW Ratio Auto Rules
Key access:
Is Detector peak
or Negative peak?
Is Trace
Average On?
Is Detector
Sample?
Is Avg Type
Power?
Is Trace
Average On?
Is Avg Type
Power?
Ratio=10
Ratio=1
Ratio=10
Ratio=1
Ratio=10
Ratio=1
Ratio=1
Yes
Yes
No
No
No
No
Yes
Yes
Yes
No
No
Yes
BW/
Avg
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