Orban OPTIMOD-PC 1101 Operating Manual page 86

2-30
INSTALLATION
L control is set to 0.0 dBfs. In this case, the 1101's D
EVEL
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
a) Set the R
EFERENCE
B) Set the P
-E
RE MPHASIS
used in your country.
C) Click the O L
UTPUT EVELS
a) Digital 1 S R
IGNAL
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
1 O
IGITAL UTPUT
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
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
e) Click the D
ISTORTION
When you do this, the O
L meters should indicate that gain reduction is occurring. The 1101's
IMITER
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
M P -L
IXER OST IMIT
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
P -L . Use a gain control following the 1101 output (typically, your
OST IMIT
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.
> C .
ONFIGURATION
control to D
S
OURCE
control to 50us or 75us, depending on the preemphasis
tab and set controls as follows:
F = P
OUTE ROM ROCESSOR
= 0.0 dBfs
preset.
L
LAT IMIT
tab and set the F
meters should indicate "0 dB" and the
UTPUT
R
IGNAL OUTE
. Then adjust the A
NALOG
R F
IGNAL OUTE
ORBAN MODEL 1101
support is used
IALNORM
O 1.
IGITAL UTPUT
M P -L .
IXER OST IMIT
menu item.
DIT
control to +24 dB.
L D
INAL IMIT RIVE
drop-down to P
F
ROM
control to produce
1 O
UTPUT
drop-down to P
ROM ROCESSOR
ROCESSOR
M
IXER