2-30
INSTALLATION
ORBAN MODEL 1101
L
EVEL
control is set to 0.0 dBfs. In this case, the 1101’s
D
IALNORM
support is used
for convenience in setting the correct on-air loudness even though analog televi-
sion transmissions do not use Dialnorm.
The following steps assume that you are driving the analog television transmitter
from the 1101’s Digital Output 1, although either output can be assigned to be
the Dialnorm reference output.
A)
Navigate to
I/O
M
IXER
>
C
ONFIGURATION
.
a)
Set the
R
EFERENCE
S
OURCE
control to
D
IGITAL
O
UTPUT
1.
B)
Set the
P
RE
-E
MPHASIS
control to
50us or 75us, depending on the preemphasis
used in your country.
C)
Click the
O
UTPUT
L
EVELS
tab and set controls as follows:
a)
Digital 1
S
IGNAL
R
OUTE
F
ROM
=
P
ROCESSOR
M
IXER
P
OST
-L
IMIT
.
This applies stereo enhancement, equalization, AGC, 2-Band or 5-Band
compression, loudness control, and look-ahead peak limiting. No other
output source will work correctly with Dialnorm.
b)
D
IGITAL
1
O
UTPUT
=
0.0 dBfs
D)
Set your transmitter’s modulation with tone.
a)
Using an external audio oscillator, apply a 100 Hz tone to the 1101 input
you are using
.
b)
Recall the
AGC+F
LAT
L
IMIT
preset.
c)
Adjust the oscillator’s output level to produce approxiamtely 10 dB of AGC
master gain reduction in the 1101. (This is the AGC meter labelled “M.”)
d)
Make the 1101’s audio processing controls visible by clicking the button
labeled “ad.” This button is below the
E
DIT
menu item.
e)
Click the
D
ISTORTION
tab and set the
F
INAL
L
IMIT
D
RIVE
control to +24 dB.
When you do this, the
O
UTPUT
meters should indicate “0 dB” and the
L
IMITER
meters should indicate that gain reduction is occurring. The 1101’s
audio processing now emitting a 100 Hz tone whose peak value is at the
maximum peak output level that the 1101’s audio processing will produce
with program material.
f)
If you are driving your transmitter with the 1101’s analog output:
Set the
1101’s Analog 1 Output
S
IGNAL
R
OUTE
F
ROM
drop-down to
P
ROCESSOR
M
IXER
P
OST
-L
IMIT
.
Then adjust the
A
NALOG
1
O
UTPUT
control to produce
100% modulation of your transmitter as measured by the peak modulation
instrument specified by your country’s regulatory authority.
g)
If you are driving your transmitter with an 1101 digital output:
Set the
1101’s Digital 1 Output
S
IGNAL
R
OUTE
F
ROM
drop-down to
P
ROCESSOR
M
IXER
P
OST
-L
IMIT
.
Use a gain control following the 1101 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.
Summary of Contents for Optimod-PC 1101
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Page 121: ...OPTIMOD PC OPERATION 3 1 Section 3 Operation Figure 3 1 The OPTIMOD PC Control Application...
Page 192: ...3 72 OPERATION ORBAN MODEL 1101...
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Page 212: ...5 2 UNINSTALLATION ORBAN MODEL 1101...
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