Orban OPTIMOD-FM 8600, Operating Manual

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INTRODUCTION ORBAN MODEL 8600
8600MPX Features
•
A
192 kHz AES3 digital composite output
that is
compatible and interop-
erable with the 192 kHz standard being implemented by several trans-
mitter manufacturers
. These implantations use the left audio channel of the
AES3 connection to carry the baseband, but their 96 kHz Nyquist frequency
makes them unable to convey 92 kHz SCAs without aliasing. Orban’s implemen-
tation extends the standard by using the right audio channel of the link to pro-
vide bandwidth extension that accommodates the full 0-99 kHz baseband when
used with hardware designed to use this extra information.
•
Two additional SCA inputs that are digitized and can be summed into the
digital composite outputs
.
These inputs are not mixed into the analog composite outputs. If you
need to use both analog and digital composite outputs, you must use a Y
connection to split the output of your subcarrier generators so that each
generator output drives one digitized SCA input and one non-digitized
SCA input.
•
Wordclock/10 MHz Sync Reference Input ( called REF IN and appearing on the
digital composite breakout cable) can be used to lock the stereo pilot tone and
the digital composite sample rate to a high precision external reference like a
GPS-based frequency standard. This facilitates using the 8600 in single-frequency
network applications.
Presets in OPTIMOD-FM
There are two kinds of presets in the 8600: Factory Presets and User Presets.
Factory Presets
The Factory Presets are our “factory recommended settings” for various program
formats or types. The description indicates the processing structure and the type of
processing. Each Factory Preset on the Preset list is really a library of 20 separate pre-
sets, selected by entering
B
ASIC
M
ODIFY
and using the
L
ESS
-M
ORE
control to adjust
OPTIMOD-FM for amount of dynamics processing required.
Factory Presets are stored in OPTIMOD-FM’s non-volatile memory and cannot be
erased. You can change the settings of a Factory Preset, but you must then store
those settings as a User Preset, to which you are free to name as you wish (as long as
that name does not duplicate another preset name). The Factory Preset remains un-
changed.
User Presets
User Presets permit you to change a Factory Preset to suit your requirements and
then store those changes.