FLX-E Operations Manual Rev F
Page 19
Table of Contents
Top
Center Frequency
is the frequency in Hz at which the filter is centered. For a low pass or high pass filter, it
is the corner frequency.
Gain
is the gain or attenuation level of the filter in dB. This is not available on all filter types.
Slope
is applicable to high/low pass filters and is the rate at which the filter rolls off above or below the
cutoff frequency.
Q
controls the bandwidth (affected frequency range) of various filter types. A higher Q represents a
narrower bandwidth.
Configuration Using Graphical Interface
The graphical interface of the Filter Designer provides a visual representation of the response curves for
both the individual filters as well as the cascaded filter output. Individual filter response is represented by a
thin line color-matched to the filter selector in the lower standard filter interface. The cascaded output is
represented by a thicker yellow line. Bypassed filters are displayed with a dotted line and are not included
in the cascaded output.
A filter is selected for editing on the graph by using the Filter
Select buttons in the lower left-hand portion of the graphical
interface. Only filters that are active are displayed in the
filter select. Clicking on a filter number will display the
control points (drag markers) for the active filter.
When a filter is selected, drag markers appear for that filter to allow
configuration of center frequency, gain, and bandwidth (Q).
To check values on the cascaded filter
frequency response, click anywhere on
the graph (other than on drag markers)
and red crosshairs will appear on the
cascaded filter moving the mouse horizontally will drag the crosshairs along
frequency axis displaying the gain level at the corresponding frequency.
