Orban OPTIMOD-FM 8600, Руководство по эксплуатации

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2-40
INSTALLATION ORBAN MODEL 8600
C) Set
F
INAL
C
LIP
D
EFEAT
to
D
EFEAT
.
This will also defeat the overshoot compensator.
Note that defeating the final clipper and overshoot compensator will in-
crease peak output levels, possibly to the point where the 8600’s output
amplifier and/or digital output clips. It is wise to customize any presets
you are using by reducing the
F
INAL
C
LIP
D
RIVE
and
O
SHOOT
C
OMP
D
RIVE
controls to their minimum values. This will greatly reduce the probability
of inadvertently clipping the 8600’s output.
Unless defeated, the 8600’s composite limiter will continue to control the
composite output level. However, you should not use the composite out-
put when the 8600’s final clipper is defeated because this will remove the
advantages of the distortion cancellation in the 8600’s final clipper. (The
composite limiter does not cancel distortion.)
17. Program Silence Sense (optional)
You can program the 8600 to switch automatically from its digital input to its
analog inputs if the
I
NPUT
S
OURCE
is set to
D
IGITAL
and the signal at the digital in-
put falls silent. Conversely, you can also program the 8600 to switch automatical-
ly from its analog inputs to its digital input if the
I
NPUT
S
OURCE
is set to
A
NALOG
and the signal at the analog input falls silent.
There are two silence detectors, one for the analog input and one for the
digital input. The silence sense parameters apply to both simultaneously.
Both detectors are available to drive the 8600’s tally outputs, and either
silence detector can be used to instigate automatic input switching. (See
Tally Output Programming on page 2-62.)
Silence sense will be activated if either channel falls silent, protecting
against “loss-of-one-stereo-channel” faults.
If silence is detected at both the analog and digital inputs (as in the case
of a studio operational fault), automatic switching will not occur.
When an active signal is restored to the preferred input, the 8600 will au-
tomatically switch back to that input.
When the digital input is in the silence detect fallback state, the unit and
PC will show the input as being
D
IG
S
ILENCE
;
when the analog input is in
silence detect fallback, they will indicate
A
NA
S
ILENCE
.
A) Navigate to
I
NPUT
/O
UTPUT
> S
ILENCE
D
ETECT
.
B) Set the
S
ILENCE
T
HRESHOLD
to the level below which the 8600 will interpret
the input as being silent.
This setting is with respect to the current analog reference level and digi-
tal reference level.
C) Set the
S
ILENCE
D
ELAY
to the amount of time that the input must be below
the
S
ILENCE
T
HRESHOLD
before the 8600 automatically switches to the analog
input.
D) Set the
A
NALOG
F
ALLBACK
to
Y
ES
if you wish the 8600 to automatically switch
from the digital to analog input when silence is detected. Set the control to
N
O
to defeat automatic switching.