Orban OPTIMOD-FM 8600S, Operating Manual, Page: 84 / 354

2-28
INSTALLATION ORBAN MODEL
If you are not using a studio level controller, feed a tone through your
console at normal program levels (typically 0VU if your console uses VU
meters).
If you are using a studio level controller that performs an AGC function,
such as an Orban 8200ST OPTIMOD-Studio, adjust it for normal opera-
tion.
c) Adjust the
AI R
EF
(VU or PPM
)
control to make the 8600S’s
AGC
meter
indicate 10 dB gain reduction.
d) Skip to step (G).
F) Calibrate using Program.
[Skip this step if you are using Tone to calibrate the 8600S to your stan-
dard studio level — see step (D) above.]
a) Verify
E
XT
AGC
is set to
NO
.
Refer to step 1 on page 2-27.
b) Feed normal program material to the 8600S
Play program material from your studio, peaking at the level to which
you normally peak program material (typically 0VU if your console uses
VU meters).
c) Adjust the
AI R
EF
(VU or PPM) control to make the 8600S’s
AGC
meters
indicate an average of 10 dB gain reduction when the console’s VU meter
or PPM is peaking at its normal level.
If the
AGC
gain reduction meter averages less than 10 dB gain reduction
(higher on the meter), re-adjust the
AI R
EF
(VU or PPM) to a lower level.
If the
AGC
gain reduction meter averages more gain reduction (lower on
the meter), re-adjust the
AI R
EF
(VU or PPM) to a higher level.
G) When finished, reset
E
XT
AGC
to
Y
ES , if required (e.g., if that was its setting
prior to setting
AI R
EF (VU or PPM) level).
Refer to step 1 on page 2-27.
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
H
B
AL control to achieve correct left/right channel balance.
This is not a balance control like those found in consumer audio prod-
ucts. This control changes the gain of the right channel only. Use this
control if the right analog input to the 8600S is not at exactly the same
level as the left input. Be certain that the imbalance is not caused by one
program source, but is instead introduced through distribution between
the console output and 8600S input. This adjustment is best accomplished
by playing program material that is known to be monophonic or by set-
ting the mixing console into mono mode (if available).