Orban OPTIMOD-FM 8600, Operating Manual

Page: 101 / 397

OPTIMOD-FM DIGITAL INSTALLATION
2-41
E) Set the
D
IGITAL
F
ALLBACK
to
Y
ES
if you wish the 8600 to automatically switch
from the analog to digital input when silence is detected. Set the control to
N
O
to defeat automatic switching.
18. Set the
P
ILOT
R
EFERENCE
control
This control is located in the
I
NPUT
/
OUTPUT
>
C
OMPOSITE
screen
.
It determines the
phase relationship between the 19 kHz pilot reference output (see page 2-10)
and the pilot tone present in the composite output.
0 D
EG
is correct for most in-
stallations. Use
90 D
EG
only if your RDS/RBDS generator’s 19 kHz reference input
specifically requires this phase relationship.
180 D
EG
and
270 D
EG
take into ac-
count installations where there is a polarity reversal in the RDS generator.
19. End Analog and Digital I/O setup.
If you are using an external AGC and you temporarily set the
E
XTERNAL
AGC
to
N
O
in step 1 on page 2-27, set the
E
XTERNAL
AGC
to
Y
ES
.
When you are finished adjusting input/output parameters, press the
E
SCAPE
but-
ton to return to the Meters screen.
20. Select a processing preset.
This step selects the processing to complement the program format of your sta-
tion.
After this step, you can always select a different processing preset, program the
8600 to automatically change presets on a time/date schedule, modify presets to
customize your sound, and store these presets as User Presets.
A) Navigate to the Presets screen.
a) Press the control knob to display the pop-up Menu.
b) Turn the knob to highlight
P
RESETS
and press the knob.
B) Using the
L
OCATE
joystick up/down control or turning the control knob, high-
light a preset corresponding to your format. Press
E
NTER
to put the highlight-
ed preset on the air.
For a discussion of the presets, see Factory Programming Presets starting
on page 3-21. Preset names are just suggestions . Feel free to audition dif-
ferent presets and to choose the one whose sound you prefer. This preset
may have a very different name than the name of your format. This is
OK.
You can easily modify a preset with the 8600’s one-knob
L
ESS
-M
ORE
fea-
ture. Navigate to the Basic Modify screen. (There may be a short delay
while the 8600 computes Less-More values.) If you do not see the
L
ESS
-
M
ORE
screen immediately, press and hold the
L
OCATE
joystick to the right
or left until you find the screen. Turning
L
ESS
-M
ORE
up will produce more
loudness but also more processing artifacts like distortion and unpleasant
density. Turning
L
ESS
-M
ORE
down will make the sound cleaner, more
open, and easier to listen to, but will also make it quieter.
C) If you are using the digital radio processor’s BS.1770 Safety Limiter (step 10 on
page 2-32) you must set your chosen processing preset’s
HD F
INAL
L
IMITER
D
RIVE
to create the appropriate amount of gain reduction in the BS.1770 Safety Lim-