User`s manual

depends upon the System Bandwidth setting. Notch Frequency is adjustable in

1 Hz steps.

Notch Depth: Depth of the notch that is generated. Notch Depth is adjustable from 10 dB to

60 dB in 1 dB steps.

Notch Width: Width of the generated notch in Hertz.

NOTE: Notch Width varies with the System Bandwidth setting.

Filter Active Button: Used to switch the filter in and out of the process without affecting the

operation of the other filters. Button LED is illuminated RED when the filter is

in the process, and is not illuminated (GRAY) when the filter is out of the

process.

NOTE: The Filter Active button is equivalent to, and linked with, the Active

button in the associated Filter block on the Master Control Panel.

OK Button: Use either this button or the “X” button at the upper right corner of the

window to exit the dialog and return to the Master Control panel.

Hint: A notch filter is best for stable tones, as it has a sharp, or “V”, bottom. If a flat-bottom, or

“square”, notch is needed, the bandstop or Multiple Notch filter may be preferred. Also, a 1-Channel

Adaptive filter (Section 4.4.2: ) is useful for automatically tracking varying tones.

A graphical description of the Notch filter and its controls follows in Figure 4-30.

Figure 4-30 Notch Filter Graphical Description