Orban OPTIMOD-FM 8500S Operating Manual page 86

2-30
INSTALLATION
Alternately, you can use the 8500S's built-in calibration tone oscillator. To
do this:
a) Navigate to Setup > T
b) Set the M
ODE
c) Set T
F
ONE REQ
d) Set T
L
ONE VL
which case the peak level at the composite output is now the same as the
maximum peak level under program conditions.)
e) Press the Next key.
f) Set T
C
ONE HAN
g) Verify that P
ILOT
h) Adjust the relevant output level control so that your peak modulation is
100%.
i) When you have finished with the tone, set the M
I) You can specify the amount by which the 8500S automatically reduces main
and stereo subchannel modulation to accommodate subcarriers within the
modulation limits specified by the governing authority. See step 2 on page 2-
23.
10. Set analog output and configuration level.
A) Navigate to Setup > I/O C
output pre-emphasis to P
If you will use the analog output to drive a stereo encoder, P
vides the best performance because the stereo encoder does not have to
restore the pre-emphasis. (Its magnitude and phase response may not
perfectly complement that of the deemphasis applied by the 8500S to its
processed output when the 8500S's output is set F
overshoots in the overall transmission chain.) However, if you cannot de-
feat the pre-emphasis in your stereo encoder or if you will use the analog
output for monitoring, set the output F
If you are sending the analog output of the 8500S through a digital link
that uses lossy compression (like MPEG, APT-X, or Dolby), set the output
.
F Lossy codecs cannot handle pre-emphasized signals.
LAT
If you are going to use the analog output for headphone monitoring [see
step (B) below], set the output F
B) Set the AO S
OURCE
FM: This produces a fully peak-controlled output suitable for driving a
transmitter.
FM+Delay: This produces a fully peak-controlled output suitable for driv-
ing a transmitter. Up to 16 seconds of diversity delay can be applied to
this output. To set the amount of delay, refer to step (9.F) on page 2-29.
.
EST
to T .
ONE
to 100 H .
Z
to 91%. (This assumes you are using 9% pilot injection, in
to L+R.
is O .
N
> A
ALIB NLG
(for pre-emphasis) or F
-
RE E
.
LAT
to FM, FM+D , or M
ELAY
to O
ODE PERATE
O C > AO P -E. Set the analog
UT ALIB RE
.
LAT
. This can introduce
LAT
.
LAT
.
ONITOR
ORBAN MODEL
.
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RE E