Orban OPTIMOD-AM 9300, Operating Manual

Page: 67 / 242

OPTIMOD-AM DIGITAL INSTALLATION
2-21
Refer to step 1 on page 2-19.
b) Feed a tone at your reference level to the 9300.
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 6300, adjust it for normal operation.
c) Adjust the
AI R
EF (VU or PPM
)
control to make the 9300’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 9300 to your stan-
dard studio level — see step (E) above.]
a) Verify
E
XT
AGC
is set to
NO
.
Refer to step 1 on page 2-19.
b) Feed normal program material to the 9300
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 9300’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 2-19.
5. Adjust the Digital Input Reference Level control.
[Skip this step if you will not be using the digital input.]
A) Navigate to
S
ETUP
> IO C
ALIB
> I
NPUT
> D
IGITAL
I
NPUT
C
ALIB
> I
NPUT
and set the
input source to
D
IGITAL
.
B) Repeat steps 3 and 4 (starting on page 2-20), but use the
DI R
EF
(VU OR PPM)
control.
6. Set output bandwidth and highpass filter cutoff frequency.
A) Navigate to
S
ETUP
> M
ODIFY
TX P
RESET
> TX1/D
AY .