Agilent Technologies N9340A - Manual (Page 74)

5 Key Reference
72 N9340A User’s Guide
VBW
Changes the analyzer post- detector filter from
3 Hz to 1 MHz in a 1, 3, 10 sequence using the
knob, the step keys, or the numeric keypad.
As the video bandwidth is decreased, the sweep
time is increased to maintain amplitude calibration.
A “#”mark appears next to RBW on the display
when it is not coupled.
Key Access:
[BW/SWP]
VBW/RBW
Selects the ratio between the video and resolution
bandwidths.
If signal responses near the noise level are visually
masked by the noise, the ratio can be set to less
than 1 to lower the noise. The knob and step keys
change the ratio in a 1, 3, 10 sequence.
Key Access:
[BW/SWP]
Avg Type
Accesses the functions to automatically or
manually choose from one of the following
averaging type:
NOTE
When an unavailable bandwidth entered using the numeric
keypad, the closest available bandwidth in the 1, 3, 10
sequence is used.
NOTE
When preset is set to default, or VBW/RBW is set to Auto,
the ratio is set to 1.