BSS Audio OPAL Series DPR-944 Owner's Manual - Manual (Page 12)

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Control operations Control operations Control operations Control operations Control operations
6.0 Control Operations - Gate
6.1 Gates In
When the Gates In switch is in the out, non illuminated position, all DPR 944
functions are bypassed and the input is connected directly to the output with a
high quality relay. The same condition occurs when the power is off, and
ensures that signal is passed through the unit in the case of a power or fuse
failure. When the switch is depressed, the processed signal is present on the
output.
In bypass mode (switch out), the input is still connected to the DPR 944
circuitry, so that all of the required facilities can be selected and set up prior
to operating the Gates In switch and going ‘on-air’.
6.2 Key filter
This control adjusts the centre frequency of the internal parametric key filter.
This filter is used to control the frequency content of the signal being sent to
the gate control circuitry, and allows the filtering out of signals not required to
control the gating action. The filter is not placed in the main signal path, and
therefore has no effect whatsoever on the program material passing through
the gate.
6.3 Filter narrow
Control operations - Gate