891
BW
–6 dB filter BW: Res BW (–6 dB) 422 Hz
Noise filter BW: Res BW (Noise) 317 Hz
Impulse filter BW: Res BW (Impulse) 444 Hz
CISPR filter BW:Res BW (CISPR) 200 Hz
MIL filter BW:Res BW (MIL) 1 kHz
Flattop filter type:Res BW (Flattop) 300 Hz
Video BW
Lets you change the test set post-detection filter (VBW) from 1 Hz to 8 MHz in approximately 10%
steps. In addition, a wide-open video filter bandwidth may be chosen by selecting 50 MHz.
Normally, Video BW (Auto) selects automatic coupling of the Video BW filter to the resolution
bandwidth filter using the ratio set by the VBW:3dB RBW key. To decouple the video bandwidth, press
Video BW until Man is underlined, or simply enter a new value.
When the Video BW is manually selected, it may be returned to the coupled state by pressing the Video
BW key until Auto is underlined. This may also be done by pressing Auto Couple or by performing a
Preset.
Key Path BW
Remote Command [:SENSe]:BANDwidth|BWIDth:VIDeo <freq>
[:SENSe]:BANDwidth|BWIDth:VIDeo?
[:SENSe]:BANDwidth|BWIDth:VIDeo:AUTO OFF|ON|0|1
[:SENSe]:BANDwidth|BWIDth:VIDeo:AUTO?
Example BAND:VID 1 KHZ
BAND:VID?
BWID:VID:AUTO ON
BWID:VID:AUTO?
Notes For numeric entries, the test set chooses the nearest (arithmetically, on a linear
scale, rounding up) available VBW to the value entered. The 50 MHz VBW is
defined to mean “wide open”.
Notes The values shown in this table reflect the conditions after a Mode Preset.