Orban OPTIMOD 6300 Operating Manual page 87

OPTIMOD 6300 DIGITAL
active because it has the smallest effect on the sonic texture of the 6300's
audio processing.
Adjusting MB L
and the amount of gain reduction in the loudness controller and peak
limiter.
N) Navigate to S
(11.A) through (11.L) for Digital Output 2.
You can freely set the DO2 controls to achieve whatever goals you want
without compromising the calibration of digital output 1 with respect to
Dialnorm. If you assign DO2 to MB+LIM and set the DO2 100% control to
be the same as the DO1 100% control, DO2 will also emit a signal prop-
erly calibrated to drive a Dolby Digital encoder.
13. Set digital configuration and output level when driving an analog tele-
vision transmitter.
[Skip this step if you are not driving an analog television transmitter.]
We recommend using 5-Band "TVA" presets (or User Presets derived from them)
when the O
UTPUT
75s, which will be true when the 6300 is correctly set up to drive an analog tele-
vision transmitter. The processing in the "TVA" presets is designed to feed an
analog TV aural channel using 50us or 75us preemphasis. To simplify setup, the
"TVA" presets have local values of D
H
(20 Hz). These values override the corresponding global values in the
IGHPASS
active Transmission Preset.
The filter settings complement analog aural carriers, while the value of D
matches the loudness of the processing to the loudness of an Optimod-TV de-
signed for analog television (like Optimod-TV 8282 and 8382) when the peak
output levels of the two processors are the same and when the 2.0 O
control is set to 0.0 dBFS.
The following steps assume that you are driving the analog television transmitter
from the 6300's Digital Output 1, although either output can be assigned to be
the Dialnorm reference output.
A) Navigate to S
you press Setup, use the Next button to scroll the display horizontally until
you find it.) Set the R
When D
set to O
ence output." In this step, you have made digital output 1 the Dialnorm
reference output.
When a given output is the Dialnorm reference output, adjusting its as-
sociated level control does not change output loudness. Instead, it sets
the maximum peak level appearing at this output with respect to 0 dBFS,
which allows you to compensate for transmission channels that introduce
peak overshoots. For example, if you lower an O
0 dBFS to –2 dBFS, the 6300 automatically reduces the gain following its
look-ahead peak limiter by 2 dB and simultaneously increases the drive
into the peak limiter by 2 dB. Hence, the average output level does not
D
changes the Loudness Level meter's indication
IMITER RIVE
> IO C > D
ETUP ALIB IGITAL
P
control (step 9 on page 2-23) is set to 50s or
REEMPHASIS
> D
. (If the Dialnorm page does not appear after
ETUP IALNORM
O
EF UT CONTROL
is active (i.e., when the Dialnorm R
IALNORM
FF )¸ one of the 6300's two digital outputs is the "Dialnorm refer-
C > DO2 C
ALIB ALIB
(–17 dB), L
IALNORM OWPASS
to DO1.
O
EF
100% control from
UTPUT
INSTALLATION
and execute steps
(15 kHz), and
IALNORM
100%
UTPUT
control is not
UT
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