User`s manual

60
Description of controls is as follows:
Lower Cutoff Specifies frequency in Hertz below which all
Frequency: signals are attenuated. Frequencies between this cutoff and the Upper Cutoff
Frequency are unaffected. Minimum Lower Cutoff Frequency is 0 Hz, while
the maximum Lower Cutoff Frequency is 10 Hz below the Upper Cutoff
Frequency. Lower Cutoff Frequency can be adjusted in 1 Hz steps.
NOTE: The Lower Cutoff Frequency can never be set higher than 10 Hz
below the Upper Cutoff Frequency.
Upper Cutoff Specifies frequency in Hertz above which all
Frequency: signals are attenuated. Frequencies between this cutoff and the Lower Cutoff
Frequency are unaffected. Minimum Upper Cutoff Frequency is 10 Hz above
the Lower Cutoff Frequency, while the maximum Upper Cutoff Frequency
depends upon the System Bandwidth setting. Upper Cutoff Frequency can be
adjusted in 1 Hz steps.
NOTE: The Upper Cutoff Frequency can never be set lower than 10 Hz
above the Lower Cutoff Frequency.
Transition Slope: Specifies slope at which frequencies below the Lower Cutoff Frequency and
above the Upper Cutoff Frequency are attenuated in dB per octave. Sharpest
attenuation occurs when Transition Slope is set to maximum, while gentlest
attenuation occurs when Transition Slope is set to minimum. Note that the
indicated value changes depending upon the Cutoff Frequency and System
Bandwidth settings. Also, note that the Lower and Upper Transition Slopes
always have different values; this is because the frequency width of an octave is
proportional to Cutoff Frequency.
Stopband Specifies amount in dB by which frequencies
Attenuation: below the Lower Cutoff Frequency and above the Upper Cutoff Frequency are
ultimately attenuated. Stopband Attenuation is adjustable from 10dB to 60dB
in 1 dB steps.
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.