Orban OPTIMOD 6300 Operating Manual page 89

OPTIMOD 6300 DIGITAL
J) Using the DO1 S
reo enhancement, equalization, AGC, 2-Band or 5-Band compression, and
look-ahead peak limiting).
No other output source will work correctly with Dialnorm.
K) Press N . Then set the DO1 E
EXT
S
TEREO
it emits both mono signals from a single AES3 output.
L) Press N . Then adjust DO1 100% to 0.0 dBFS.
EXT
M) Set your transmitter's modulation with tone.
a) Navigate to S
b) Hold down the M
c) Set T
ONE
d) If you are driving your transmitter with the 6300's analog output: Use the
6300's AO 100% control (S
produce 100% modulation of your transmitter as measured by the peak
modulation instrument specified by your country's regulatory authority.
e) If you are driving your transmitter with a 6300 digital output: Use a gain
control following the 6300 output (typically, your analog transmitter's
sensitvity control) to produce 100% modulation of your transmitter as
measured by the peak modulation instrument specified by your country's
regulatory authority.
Achieving correct on-air loudness and proper operation of the 6300's
loudness meter requires you to align the transmission system following
the 6300 so that 0.0 dBFS at the 6300's output corresponds to 100% peak
modulation of the transmitter. When the D
the 6300's DO1 100% control to set the gain between the 6300 and the
transmitter will not produce correct loudness controller and loudness me-
ter calibration and on-air loudness because this control only sets the
maximum peak level while attempting to maintain the average modula-
tion constant when adjusted. It does this by driving the look-ahead lim-
iter 1 dB harder for every 1 dB that the 2.0 O
N) Test modulation with program material to determine the overshoot in your
transmission system.
a) Navigate to S
b) Recall the TVA 5B G
c) Apply typical program material to the 6300's input. Verify that the L
GR meters are indicating gain reduction on peaks, which ensures that the
6300 is producing 100% peak modulation on program material.
d) Measure your transmitter's peak modulation. If this exceeds 100%, turn
down the 6300's DO1 100% control until the modulation of peaks of
frequent recurrence is constrained to 100% deviation.
button, set the digital 1 output source to MB+LIM (ste-
OURCE
MITS
/D is the normal setting. When the 6300 is in D
UAL
> T .
ETUP EST
button and choose T
ODE
F to 100 H and T
REQ Z
ETUP
> T and choose O
ETUP EST
P
EN URPOSE
parameter to S
TEREO
.
ONE
L to 100%.
ONE VL
> I/O C > A
ALIB NALOG
R
IALNORM EF
L
UTPUT EVEL
PERATE
preset.
INSTALLATION
/D
.
UAL
M
mode,
UAL ONO
C > A O ) to
ALIB NLG UT
O = D01, using
UT
is turned down.
IMITER
2-35