Controls - Vcx-80; Limiter Threshold; Master Attenuation; Remote Active Indicator - Ashly VCX-80 Operating Manual

Operating Manual - VCX-80 Master VCA/Limiter, RD-8 and RW-8 Remote Controller
5. CONTROLS - VCX-80

5 .1 Limiter Threshold

This recessed trimpot adjusts the signal threshold above
which the limiter will become active . The units of this threshold dial
are dBu where 0dBu = 0 .775Vrms . The limiter is a peak-detecting
true VCA-type limiter with very low distortion . The input to output
ratio of the limiter is approximately 10 to 1 with a relatively fast
attack and moderate release time behavior . The adjacent yellow
threshold LED indicates when the limiter circuit has been activated
by an audio signal above the threshold level . To disable the limiter
on any given channel, simply rotate its threshold adjustment fully
clockwise to +23dBu, which is the maximum input signal of the unit .

5 .2 Master Attenuation

4
This control attenuates all eight channels uniformly .
This control was designed as a simple means of turning-down
all eight audio channels at the VCX-80 location in the event
of feedback or other sound system problems . Normally this
control should be set fully clockwise at 0dB attenuation.

5 .3 Remote Active Indicator

This green LED indicates when the VCX-80 is receiving
data from the RD-8 or RW-8 . If this light goes out, it means the
VCX-80 is no longer receiving data, due to a disconnection of
the control data signal . In the event of remote control data inter-
ruption, the VCA channel levels will "remember" their settings
just before the data reception stopped and continue to operate as if