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Fig. 3-4:
CARD
#7:
OUTPUT
FORMAT
JUMPERS
5)
Loudness
Controller:
Card
it2
(the
Loudness
Controller)
may
be
strapped
to
power-up
either
ON
or
OFF. As
shipped,
it
powers-up
ON. Move
the
jumper on
Card
#2
according
to Fig. 3-5
below
as
necessary.
Fig. 3-5:
CARD
#2:
POWER-UP JUMPER
The
Loudness
Controller
has
been
designed
to
be
fed
either
preemphasized
audio (from Cards #8 and
it9)
or
non-preemphasized
audio (from
Cards #3 and
#4).
When
the
Loudness
Controller card
is
located
in
the
main
chassis (rather
than
the
Accessory
Chassis),
it
is
supplied
preemphasized
audio
from Cards #8
and
it
9.
It
is
shipped
strapped
for
this
condition.
When
it
is
moved
to
an
Accessory
Chassis,
it
must
be
restrapped
according
to
Fig.
3-6 below.
6)
Other Jumpers:
OPTIMOD-TV
shares
circuit
cards
with
a
number
of
other
Orban
products.
Jumpers
on
Cards
it
6,
8,
and
9
must
be correctly strapped
to
configure
these
cards
as
OPTIMOD-TV
cards.
Appendix
H
summarizes
the
normal
positions
of
these
jumpers
as
used
in
OPTIMOD-TV,
and
should
be
consulted
if
the
jumpers
are accidentally
moved.
Reassembly:
When
the physical examination,
line
voltage adjustment,
and
optional
initialization
procedures
are
completed,
replace the subpanel.
The
subpanel, besides
carrying
knob
identification
and
calibrations
and
holding the cards
in
place,
also
provides
RF
shielding for
the
cards.
So,
all
four
DZUS
fasteners should be
engaged
by
turning 1/4-turn clockwise.
3
-4
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