OPTIMOD-FM DIGITAL
INSTALLATION
2-29
6.
Set response to an invalid or missing analog or digital input signal. (op-
tional)
7.
Defeat final clipper (optional).
If you are using the 8600Si to drive a network with protection audio processors
(like Orban’s Optimod-FM 5500) at each transmitter, you may wish to defeat the
8600Si’s final clipper to prevent double clipping, which will unnecessarily in-
crease distortion on-air. To do this:
A)
Navigate to the
Setup
>
F
INAL
C
LIP
. If
F
INAL
C
LIP
does not appear, repeatedly
press the
Next
button until it does.
In PC Remote, this control is located in
I/O
>
U
TILITIES
.
B)
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 8600Si’s out-
put amplifier and/or digital output clips. It is wise to customize any pre-
sets 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 8600Si’s output.
Unless defeated, the 8600Si’s composite limiter will continue to control
the composite output level. However, you should not use the composite
output when the 8600Si’s final clipper is defeated because this will re-
move the advantages of the distortion cancellation in the 8600Si’s final
clipper. (The composite limiter does not cancel distortion.)
This control does not work with MX presets, where final clipping is al-
ways active.
8.
Set the polarity of the analog FM processing (optional).
In HD Radio installations, this command is useful when switching the 8600 be-
tween transmitters if the transmitters’ exciters produce opposite FM modulation
polarities when driven by identical digital audio input signals. This setting affects
any output emitting the analog FM processed signal, including the composite
output.
A)
Navigate to the
I
NPUT
/
OUTPUT
>
U
TILITES
screen.
B)
Set the
FM
P
OLARITY
control to
P
OSITIVE
or
N
EGATIVE
as appropriate for your
transmitter.
9.
Configure Composite Outputs
A)
Navigate to
Setup
>
S
TEREO
E
NCODER
>
Next
>
P
RE
-E
MPH
. Set the pre-emphasis
to 50
µ
s or 75
µ
s, depending on your country’s standard.
B)
Set
PILOT
LVL
to
9%
.
Содержание OPTIMOD-FM 8600Si
Страница 1: ...Operating Manual OPTIMOD FM 8600Si Digital Audio Processor Version 2 5 Software...
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Страница 255: ...OPTIMOD FM DIGITAL OPERATION 3 89...
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Страница 330: ...6 28 TECHNICAL DATA ORBAN MODEL 8600Si CONTROL BOARD PARTS LOCATOR...
Страница 336: ...6 34 TECHNICAL DATA ORBAN MODEL 8600Si 5700 8600S I O DSP BOARD PARTS LOCATOR DRAWING 32370 860 01...
Страница 341: ...OPTIMOD FM DIGITAL TECHNICAL DATA 6 39 8600S I O BOARD COMPOSITE SCA DAUGHTERBOARD SHEET 4b of 12 62310 000 02 1...
Страница 350: ...6 48 TECHNICAL DATA ORBAN MODEL 8600Si FRONT REAR FRONT PANEL PARTS LOCATOR DIAGRAM 32275 000 09...
Страница 354: ...6 52 TECHNICAL DATA ORBAN MODEL 8600Si...
Страница 355: ...OPTIMOD FM DIGITAL TECHNICAL DATA 6 53...
Страница 356: ...6 54 TECHNICAL DATA ORBAN MODEL 8600Si...