Orban 8300J, Operating Manual, Page: 73 / 280

OPTIMOD-FM DIGITAL INSTALLATION
2-25
If you know the reference VU or PPM level that will be presented to the 8300, set
the reference level to this level, but please verify it with the steps shown directly
below.
A) Press the R
ECALL
button.
B) Turn the knob until
ROCK-MEDIUM
appears in the lower line of the display.
C) Press the
R
ECALL
N
EXT
button.
D) Navigate to
S
ETUP
/ IO C
ALIB
/ A
NLG
I
N
C
ALIB
/ AI R
EF
(VU
or
PPM,
depending on
which metering system you use ) .
E) Calibrate using Tone.
[Skip to step (F) if you are using Program material to calibrate the 8300 to
your standard studio level.]
a) Verify E
XT
AGC is set to N
O
.
Refer to step 1 on page 2-24.
b) Feed a tone at your reference level to the 8300
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 8300’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 8300 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 2-24.
b) Feed normal program material to the 8300
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 8300’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.