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Spectrum Analyzer Mode Key Descriptions
Spectrum Analyzer Mode Functions
VID BW
AUTO MAN
changes the analyzer post-detection filter from 30 Hz to 3
MHz in a 1, 3, 10 sequence.
Rx”
Option 130 only. Option
130 provides additional narrow resolution bandwidths of 30
Hz, 100 Hz, and 300 Hz.
As the video bandwidth is decreased, the sweep time is
increased to maintain amplitude calibration. A
“f”
mark
appears next to VBW on the bottom of the analyzer display
to indicate that it is not coupled. To couple the video
bandwidth, press VID BW AUTO MAN so that AUTO is
underlined.
The video bandwidth can be changed by using the step keys,
the knob, or the numeric keypad.
NOTE
Coupling the video bandwidth function also couples the video bandwidth to resolution bandwidth ratio
function. If you want to auto-couple the video bandwidth to a nonstandard ratio, you must set the
video bandwidth to auto-couple before setting the video-bandwidth/resolution-bandwidth ratio.
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