Orban OPTIMOD-FM 8600, Operating Manual

Page: 57 / 397

OPTIMOD-FM DIGITAL INTRODUCTION
1-29
Because of system architecture, it is necessary to include the Multipath
Mitigator/Phase Corrector in the signal path before the low delay moni-
tor output. If this is activated in I/O Setup (step 8 on page 2-32), it adds
about 250 ms delay, and the “low delay” output will no longer be usable
for its intended purpose. If you use the Phase Corrector, we recommend
using a separate monitor processor (like an old analog Optimod-FM) for
headphones.
EAS Test
For stations participating in the Emergency Alert System (EAS) in the United States,
broadcast of EAS tones and data is accomplished in two different ways:
Note: Normal 8600 processing may not allow the full modulation level as re-
quired by EAS standards. It is therefore necessary to temporarily defeat the
8600’s processing during the broadcast of EAS tones and data. Placing the 8600
in its
B
YPASS
Test Mode can defeat the processing. The
B
YPASS
G
AIN
control al-
lows a fixed gain trim through the 8600. See “Test Modes,” on page 3-84 for
more information.
1. Place the 8600 in Bypass mode locally.
A)
L
OCATE
to
S
YSTEM
S
ETUP
on the pop-up Menu display, then press
E
NTER
but-
ton.
B) Select
T
EST
M
ODES
>
L
OCATE
to
T
EST
M
ODES
icon and press
E
NTER
button.
C)
L
OCATE
to
B
YPASS
, then press
E
NTER
button.
D) Begin EAS broadcast.
After the EAS broadcast, resume normal processing:
E)
L
OCATE
to
O
PERATE
in the Test Modes screen, then press
E
NTER
button.
This will restore the processing preset in use prior to the Test Mode.
2. Place the 8600 in Bypass mode by remote control.
To do this, you must first program any two Remote Interface inputs for “Bypass”
and “Exit Test,” respectively:
A) Connect two outputs from your station remote control system to the
R
EMOTE
I
NTERFACE
connector on the rear panel of the 8600. See Figure 2-2 on page 2-
4.
B)
L
OCATE
to
S
YSTEM
S
ETUP
on the pop-up Menu display, then press
E
NTER
but-
ton.
C) Select
N
ETWORK
R
EMOTE
>
L
OCATE
to
N
ETWORK
R
EMOTE
M
ODES
icon and press
E
NTER
button.
D) Press and hold
L
OCATE
right to the System Setup > Network / Remote 2 screen.
E) Select the desired Remote Interface input (1-8), using
L
OCATE
button.
F) Turn the control knob to display
B
YPASS
, then press the
E
NTER
button.