Orban Optimod-FM 8300 Operating Manual page 74

2-26
INSTALLATION
G) When finished, reset E
prior to setting AI R
Refer to step 1 on page 2-24.
4. Adjust Right Channel Balance.
[Skip this step if the channels are already satisfactorily balanced.]
[3 dB to +3 dB] on right channel only, 0.1 dB steps
Adjust the R C
B
H AL
This is not a balance control like those found in consumer audio prod-
ucts. This control changes gain of the right channel only. Use this control
if the right analog input to the 8300 is not at exactly the same level as
the left input. Be certain that the imbalance is not caused by one pro-
gram source, but is instead introduced through distribution between the
console output and 8300 input. This adjustment is best accomplished by
playing program material that is known to be monophonic or by setting
the mixing console into mono mode (if available).
5. Adjust the Digital Input Reference Level and Right Balance controls.
[Skip this step if you will not be using the digital input.]
A) Navigate to S
ETUP
B) Repeat steps 1 through 4 (starting on page 2-24), but use the DI R
PPM) and R CH BAL controls for the digital section.
6. Configure Composite Outputs
A) Navigate to S
ETUP
to 50µs or 75µs, depending on your country's standard.
B) Set PILOT LVL to 9%.
If you have to reduce the setting of the
commodate overshoots in the transmission path following the 8300 (in-
cluding the transmitter), you may have to increase the setting of the
P L
ILOT EVEL
C) Press the N button. Be sure that M
EXT
to O . Reset these parameters if necessary.
PERATE
D) Using the C
OMP
posite output to produce 100% modulation of the FM carrier on modulation
peaks.
Alternately, you can use the 8300's built-in calibration tone oscillator. To
do this:
a) Navigate to S
b) Set the M
ODE
c) Set T
F
ONE REQ
AGC to Y
XT ES
(VU or PPM) level).
EF
control to achieve correct left/right channel balance.
/ IO C / D I C
ALIB IG N ALIB
/ S E
TEREO NCODER
so that the pilot is still at 9% modulation.
ODE
and C
1 L 2 L
VL OMP VL
/ T .
ETUP EST
to T .
ONE
to 400 H .
Z
, if required (e.g., if that was its setting
/ I and set the input to Digital.
NPUT
. Set the pre-emphasis
/ N / P -E
EXT RE MPH
C L
OMPOSITE EVEL
is set to S and X
TEREO
controls, adjust the level for each com-
ORBAN MODEL 8300
(VU OR
EF
control to ac-
is set
T
TALK EST