Agilent Technologies N9340A - Manual (Page 73)

Key Reference 5
N9340A User’s Guide 71
BW/SWP
Actives bandwidth function and accesses the
associated softkeys to control resolution bandwidth,
video bandwidth and sweep time.
RBW
Changes the 3 dB resolution bandwidth on the
analyzer from 30 Hz to 1 MHz in a 1, 3, 10
sequence using the knob, step keys or the numeric
keypad.
As the resolution bandwidth is decreased, the
sweep time is modified to maintain the amplitude
calibration. Resolution bandwidth is also related to
span. As span is decreased, the resolution
bandwidth is decreased. As the resolution
bandwidth changes, the video bandwidth, if in auto
couple mode, changes to maintain the VBW/RBW
ratio.
A “#”mark appears next to RBW on the display
when it is not coupled
.
Key Access:
[BW/SWP]
NOTE
When an unavailable bandwidth entered using the numeric
keypad, the closest available bandwidth in the 1, 3, 10
sequence is used.
NOTE
When RBW is set to Auto in non-zero span, any changes to
RBW while in zero span will revert to the Auto value when
you return to non-zero span. When RBW is set to Man in
non-zero span, any changes to RBW while in zero span will be
maintained when you return to non-zero span.