OPTIMOD-FM DIGITAL
INSTALLATION
2-27
d)
Set
T
ONE
L
VL
to 100%.
e)
Press the
N
EXT
key.
f)
Set
T
ONE
C
HAN
to
L+R
.
g)
Verify that
P
ILOT
is
O
N
.
h)
When you have finished with the tone, set the
M
ODE
to
O
PERATE
.
E)
If you are required to meet the requirements of ITU-R 412-9 in your country,
activate the 8300’s ITU-R 412 controller. See step 20 on page 2-22.
F)
You can specify the amount by which the 8300 automatically reduces main
and stereo subchannel modulation to accommodate subcarriers within the
modulation limits specified by the governing authority. See step 21 on page 2-
23.
7.
Set analog output and configuration level.
A)
Navigate to
S
ETUP
/
IO
C
ALIB
/
A
NLG
O
UT
C
ALIB
/
AO
P
RE
-E
. Set the analog out-
put pre-emphasis to
P
RE
-
E
(for pre-emphasis) or
F
LAT
.
If you will use the analog output to drive a stereo encoder,
P
RE
-
E
pro-
vides the best performance because the stereo encoder does not have to
restore the pre-emphasis. However, if you cannot defeat the pre-
emphasis in your stereo encoder or if you will use the analog output for
monitoring, set the output
F
LAT
.
If you are sending the analog output of the 8300 through a digital link
that uses lossy compression (like MPEG, APT-X, or Dolby), set the output
Flat
.
Lossy codecs cannot handle pre-emphasized signals.
If you are going to use the analog output for headphone monitoring [see
step (C) below], set the output
F
LAT
.
B)
You can use either program material or tone to set your output level (and
thus, your on-air modulation). If you want to use tone, turn on the 400Hz
calibration tone.
See step (6.D) on page 2-26 for instructions on how to turn on the cali-
bration tone.
C)
Using the
AO
F
EEDS
button, set the analog output source to
X
MITTER
or
M
ONITOR
.
See step 10 on page 2-18.
If have set the source to Monitor, be sure to set analog pre-emphasis to
Flat. See step (A).
D)
Using the
AO
100%
button, set the desired analog output level corresponding
to 100% modulation, using units of dBu (0 dBu = 0.776 Vrms).
The most accurate way to set this control is by observing a modulation
analyzer connected to your transmitter.
If you have (inappropriately) set
AO
F
EEDS
:
M
ONITOR
in step (C) above, the
peak level will not be well controlled because no peak limiting has been
applied to this signal.
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 247: ...OPTIMOD FM DIGITAL TECHNICAL DATA 6 29...
Page 254: ...6 36 TECHNICAL DATA ORBAN MODEL 8300 CPU Module...
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...