User manual

88 Series Outboard / 8801 Issue 7.6
Hysteresis
The Hysteresis knob sets the difference in threshold for signals that are
rising or falling in level.
Signals that are rising in level turn on when the level reaches the threshold
level plus the hysteresis value.
Signals that are falling in level turn off at the Threshold level.
Raising the threshold for rising signals prevents noise turning the gate on,
and also allowing a lower threshold for falling signals to prevent reverb signal
tails being prematurely gated.
For example, if the threshold is set at -30 and the hysteresis is set at 10, the
signal level would have to rise above -20dB before the channel turns on, and
the channel would remain on until the signal level fell below -30dB.
Expander
Pressing the Hysteresis knob switches the gate off and the 2:1 ratio
expander on.
The Expander led will light to indicate Expander mode.
Invert/Ducker
Pressing the Release knob inverts the behaviour of the Gate.
This function is sometimes called a “ducker”.
The Invert led lights to indicate that the Gate is in Invert mode.
The function is normally used with an external key input.
When gating, a signal above the threshold level on the key input allows signal
to pass; when ducking a signal above the threshold level on the key input
causes the gain of the channel signal to be reduced by the amount set on the
Range knob.
Gain Reduction
The green meter indicates the gain reduction in dB when the gate is actioned.
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