2-20
INSTALLATION
ORBAN MODEL 8300
A)
Press the
N
EXT
button.
B)
[Skip this step if you will not be using the digital output.]
Turn the knob to choose
P
RE
-
E
(for a 50 or 75µs pre-emphasized output),
J.17
(for a J.17 pre-emphasized output
),
P
RE
+J17
(for 50 or 75µs pre-
emphasis cascaded with J.17 pre-emphasis), or
F
LAT
(which applies 50 or
75µs de-emphasis after the processing).
Regardless of the setting of this control, the processing is always inter-
nally pre-emphasized and thus always controls peaks to follow the 50 or
75µs pre-emphasis curve.
13.
Set the digital output sample rate.
A)
Press the
N
EXT
button.
B)
[Skip this step if you will not be using the digital output.]
Turn the knob to set the Digital
O
UTPUT
S
AMPLE
R
ATE
to 32, 44.1, 48, 88.2,
or 96 kHz.
The internal sample rate converter sets the rate at the 8300’s digital out-
put. This adjustment allows you to set the output sample rate to ensure
compatibility with equipment requiring a fixed sample rate. In all cases,
the 8300’s fundamental sample rate is 32 kHz, ensuring that the output
bandwidth is always strictly limited to 16 kHz and that the processed sig-
nal can be passed through a 32 kHz uncompressed STL without addition
of overshoot.
14.
Prepare to set output levels.
A)
Press the
N
EXT
button.
You can use either program material or tone to set the output level (and
thus, the on-air modulation).
To use tone, press the
Y
ES
button.
To use program material, press the
N
O
button.
15.
Set the composite output level.
[Skip this step if you will not be using the composite output(s).]
A)
Observe the modulation produced by the 8300’s
C
OMPOSITE
O
UTPUT
1
on a
modulation monitor or modulation analyzer. Turn the knob to make the
modulation monitor read 100% modulation (usually
75 kHz deviation).
If you are using program material, make sure that the program material
is loud enough to produce peaks of frequent recurrence that hit the
8300’s peak limiting system, thereby defining the maximum peak level
that the 8300 will produce. In the U.S., we recommend using 900
s peak
weighting on the peak modulation indicator, as permitted by F.C.C. rules.
This will cause the monitor to ignore very low energy overshoots and will
result in the highest peak modulation permitted by law.
Summary of Contents for 8300J
Page 1: ...Operating Manual OPTIMOD FM 8300 Digital Audio Processor Version 2 1 Software...
Page 7: ...Operating Manual OPTIMOD FM 8300 Digital Audio Processor Version 2 1 Software...
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Page 260: ...6 42 TECHNICAL DATA ORBAN MODEL 8300 8300 RS232 BOARD PARTS LOCATOR...
Page 262: ...6 44 TECHNICAL DATA ORBAN MODEL 8300 8300 POWER SUPPLY PARTS LOCATOR...
Page 264: ...6 46 TECHNICAL DATA ORBAN MODEL 8300 8300 I O BOARD PARTS LOCATOR...
Page 270: ...6 52 TECHNICAL DATA ORBAN MODEL 8300 DSP BOARD PARTS LOCATOR DRAWING 32170 000 14...
Page 278: ...6 60 TECHNICAL DATA ORBAN MODEL 8300 8300 DISPLAY BOARD PARTS LOCATOR...
Page 279: ...OPTIMOD FM DIGITAL TECHNICAL DATA 6 61 DISPLAY BOARD...