Orban OPTIMOD-FM 8600, Руководство по эксплуатации

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OPTIMOD-FM DIGITAL INSTALLATION
2-31
D) Calibrate using Tone.
[Skip this step if you are using program material to calibrate the 8600 to
your standard studio level. Skip to step (E).]
a) Verify
E
XTERNAL
AGC
is set to
NO
.
Refer to step 1 on page 2-27 above.
b) Feed a tone at your reference level to the 8600
• If you are not using an external AGC, feed a tone through your con-
sole at normal program levels (typically 0VU if your console uses VU
meters).
•
If you are using an Orban 4000 Transmission Limiter, press its two
TEST
buttons. Feed a tone through your console at the level to which
you normally peak program material (typically 0VU if your console us-
es VU meters).
•
If you are using a Studio Level Controller that performs an AGC func-
tion, such as an Orban 8200ST OPTIMOD-Studio or 464A, adjust it for
normal operation.
c) Adjust the
R
EFERENCE
L
EVEL
to make the 8600’s
AGC
meters indicate 10 dB
gain reduction.
d) When finished, reset
E
XTERNAL
AGC
to
Y
ES
, if required (e.g., if that was its
setting prior to setting
R
EFERENCE
L
EVEL
).
e) Skip to step 6.
E) Calibrate using Program.
[Skip this step if you are using tone to calibrate the 8600 to your standard
studio level—see step (D) above.]
a) Verify
E
XTERNAL
AGC
is set to
N
O
.
Refer to step 1 on page 2-27 above.
b) Feed normal Program material to the 8600
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
R
EFERENCE
L
EVEL
to make the 8600’s
AGC
meters indicate an av-
erage of 10 dB gain reduction when the console’s VU or PPM is peaking at
its normal level.
•
If the AGC gain reduction meter averages less than 10 dB gain reduc-
tion (higher on the meter), set the
R
EFERENCE
L
EVEL
to a lower level.
•
If the AGC gain reduction meter averages more gain reduction (lower
on the meter), set the
R
EFERENCE
L
EVEL
to a higher level.
d) When finished, reset
E
XTERNAL
AGC
to
YES
, if required (e.g., if that was its
setting prior to setting the
R
EFERENCE
L
EVEL
).