Orban OPTIMOD-PC 1101 Operating Manual page 99

OPTIMOD-PC
The D
I/O mixer
The controls to which the following procedure refers are described later in Section 3.
A) Make sure that the processor mixer's output is peaking around –15 dB for
normal program (see Input Setup Procedure on page 2-35).
B) Make sure that the 1101's active D
value you are transmitting to consumers' receivers.
For U.S. program providers, this ensures that the 1101-processed trans-
mission will meet the requirements of the CALM Act.
C) If the AGC is turned on in the preset, adjust the AGC D
AGC is producing the desired amount of compression. We recommend 10 dB
or less with normal levels.
D) If the AGC's idle gain (i.e. the gain reduction produced by the AGC when its si-
lence gate is on) is inappropriate, adjust it with the AGC I
If you are using a factory processing preset and you have adjusted the in-
put reference level correctly, there is no need to adjust the
or AGC I
E) Adjust the M
the five-band or two-band structure is active) to produce the desired amount
of multiband gain reduction. We recommend about 5 dB for dialog at normal
levels.
F) If you wish to use the CBS Loudness Controller: Set the L
control to 0 dB, which matches the CBS Loudness Controller's threshold to the
8685's active D
changed from –10 dB to 0 dB to make the setting more intuitive.) Then set the
MB L D
IMIT RIVE
indicates 3 dB of gain reduction with dialog at normal levels. (The CBS Loud-
ness Controller's gain reduction appears in blue on the L
You should see the L
L
OUDNESS
G) If you wish to use the BS.1770 Safety Limiter: Set the BS.1770 T
trol to your preferred level. 0 LK provides the tightest control as indicated on
a BS.1770 meter, but this is likely to cause program material with an usually
low peak to RMS ratio to sound too quiet. Most natural sound is produced
when the BS.1770 T
H) If you do not wish to use the Loudness Controller: Set the L
T
HRESHOLD
L D
IMITER RIVE
meter with dialog at normal levels.
Presets with the loudness controller off will produce wider source-to-
source loudness variation (as indicated on the L
presets with the loudness controller on. When the loudness controller is
off, the five-band structure will control loudness better than the two-
R
IALNORM EFERENCE CONTROL
.
G controls.
DLE AIN
D or 2-B
ULTIBAND RIVE
value. (Starting in software version 3.1, this was
IALNORM
control so that the CBS segment of the L
L
OUDNESS
GR meter shows that gain reduction is occurring
control is set to +2 LK or higher.
HRESHOLD
and BS.1770 L
T
IMIT HRESHOLD
control to produce 0 dB peak indications on the CBS loudness
is located in the C
ONFIGURATION
value is the same as the Dialnorm
IALNORM
D control (depending on whether
AND RIVE
meter peaking around 0 dB when the
EVEL
controls to O
OUDNESS
INSTALLATION
tab of the
control so that the
RIVE
G control.
DLE AIN
AGC D
RIVE
T
OUDNESS HRESHOLD
GR meter
OUDNESS
GR meter.)
OUDNESS
con-
HRESHOLD
OUDNESS
. Then adjust the MB
FF
L meter) than
EVEL
2-43