Orban OPTIMOD 6300, Руководство по эксплуатации

Страница: 69 / 255

OPTIMOD 6300 DIGITAL INSTALLATION
2-21
The 6300’s bandwidth is always the lowest of these three settings. The
frequency in Setup is a technical parameter that determines the highest
bandwidth available. The installing engineer should set it to be congru-
ent with the sample rate of the digital system that the 6300 is driving. For
example, if the 6300 is driving a system with a 32 kHz sample rate, set the
MAX LPF
to
15.0
KHZ
. That way, a setting of 20 kHz elsewhere will not
cause excessive bandwidth and aliasing because the 6300 will automati-
cally override it with the
MAX LPF
setting.
A) Navigate to
S
ETUP
> M
AX
LPF
B) Set the maximum bandwidth as desired.
2. Temporarily set the external AGC mode to “No.”
Navigate to
S
ETUP
> N
EXT
> N
EXT
> E
XT
AGC
and set
E
XT
AGC
to
N
O
.
If you are using a external AGC like the Orban 8200ST, you should restore
this setting to
Y
ES
after the setup procedure is complete.
3. Adjust Input selector.
A) Navigate to
S
ETUP
> IO C
ALIB
> I
NPUT
.
B) Set the
I
NPUT
to
A
NALOG
.
The 6300 will automatically switch to analog input if signal lock is un-
available at the AES3 input.
4. Adjust Analog Input Reference Level.
[

9dBu to +13dBu (VU), or –2 to +20dBu (PPM)] in 0.5 dB steps
The reference level VU and PPM (Peak) settings track each other with an offset
of 8dB. 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 6300’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 6300’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 6300, 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
5B GENERAL PURP
appears in the lower line of the dis-
play.
C) Press the R
ECALL
N
EXT
button.