Orban OPTIMOD-FM 8600S, Operating Manual

Page: 83 / 354

OPTIMOD-FM DIGITAL INSTALLATION
2-27
1. Temporarily set the external AGC mode to “No.”
A) Navigate to
Setup > Next > Next > E
XT
AGC
and set
E
XT
AGC
to
N
O . (It may be
set to
N
O already.)
If you are using a external AGC like the Orban 6300, you should restore
this setting to
Y
ES after the setup procedure is complete.
2. Adjust Input selector.
A) Navigate to
Setup > I/O C
ALIB
> A
NLG
I
N
C
ALIB
> I
NPUT .
B) Set the
I
NPUT to
A
NALOG .
The 8600S will automatically switch to analog input if signal lock is un-
available at the AES3 input.
3. Adjust Analog Input Reference Level.
[

9 dBu to +13 dBu (VU), or –1 to +21 dBu (PPM)] in 0.5 dB steps
The reference level VU and PPM (Peak) settings track each other with an offset
of 7 dB. This compensates for the typical indications with program material of a
VU meter versus the higher indications on a PPM.
This step sets the center of the 8600S’s gain reduction range to the level to which
your studio operators peak their program material on the studio meters. This as-
sures that the 8600S’s processing presets will operate in their preferred range.
You may adjust this level with a standard reference/line-up level tone from your
studio or with program material.
Note that in this step, you are calibrating to the normal indication of the studio
meters; this is quite different from the actual peak level.
If you know the reference VU or PPM level that will be presented to the 8600S,
set the reference level to this level, but please verify it with the steps shown di-
rectly below.
A) Press the
Recall
button.
B) Turn the knob until
ROCK-MEDIUM
appears in the lower line of the display.
C) Press the
Recall Next
button.
D) Navigate to
Setup > I/O 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 8600S
to your standard studio level.]
a) Verify
E
XT
AGC
is set to
N
O
.
Refer to step 1 on page 2-27.
b) Feed a tone at your reference level to the 8600S