Front Panel Controls - Universal Audio 1178 Operating Instructions Manual

POWER REQUIREMENTS: 100
- 125 VAC, or 200
- 250 VAC, 50/60 Hz,
switch selectable,
less than 10 W.
ENVIRONMENT:
Operating, 0*C to +50
®C;
Storage,
— 20"C to +60®C.
1.3
FRONT PANEL CONTROLS
INPUT
AND OUTPUT LEVEL:
Continuously adjustable.
ATTACK
:
Continuously adjustable, 20
microseconds
to 800
microseconds. (Fastest attack
is in
the
maximum clockwise
(CW)
position.)
LIMITING ON/OFF:
This switch
is
coupled
with the
Attack Time control. In the
full
counterclockwise position
(CCW)
the
limiting function
is
disabled.
RELEASE:
Continuously adjustable from 50
milli-
seconds to
1.1 seconds.
(Fastest release
in
obtained
in the
maximumum
CW position.)
A/B -
STEREO SWITCH
:
In
the A/B position
the Model 1178 may be
operated as
two independent limiters. In
the STEREO
position
the
gain reduction
amplifiers of the two channels are linked
together, and the
maximum limiting in one
channel causes an equal amount of limiting
in the
other channel.
(The
compression
ratio, attack time, and release time are
always identical in both channels
.
)
COMPRESSION RATIO:
Switch selectable with four
interlocking
pushbuttons
.
METER FUNCTION:
Three interlocked pushbuttons switch
the meter to read either the amount of
gain reduction or the
output signal level
referenced
to +4
dBm or +8 dBm. The
fourth pushbutton selects the response
characteristic of the
meter when reading
the output level. "Average" is
typical
VU indication
as
selected with the +4 or
+8 dBm pushbutton.
In the "Peak"
mode the
meter reacts faster, and
0
VU corresponds
to
a
level which
is 6
dB higher than
the
selected output signal reference.
(Gain
reduction indication
is
always
average responding.)
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3
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