FORUM OPERATION AND MAINTENANCE MANUAL 9601
PAGE 34
6 INTO 1 MICROPHONE INPUT
Six microphone inputs are available on this dual width module.
Individual gain and level controls and an ON switch are available
to each input.
GAIN
The gain of a microphone input can be adjusted from 6dB to 76dB.
VOL
This adjusts the level of any input before being mixed with the
other input signals.
ON
This allows an input signal through to the remainder of the module.
SIG
Indicates the presence of signal above. The internal signal level of
the module will be about -18dBu when this indicator comes on.
PEAK
Indicates that the signal level is approaching clipping and that the
gain should be reduced. The internal signal level of the module will
be about +12dBu when this indicator comes on. The maximum
signal level inside the module is +20dBu and thus about 6dB of
headroom is left when the PEAK led is on.
Both the above indicators are located after the gain control stage
but before the VOL control.
The remainder of the module is identical to a standard mono input
module as described on page 17.
