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3-6
OPERATION
Orban Model
464A
U-Matic
VCR
To
avoid objectionable
distortion
and/or
noise,
the
U-Matic format
requires
more
careful
high-frequency
limiting
and
less
dynamic
range than
do
1-inch or y
2
-inch
tape
formats.
METER
CAL
+3
(=
3% THD
level
from
tape)
HF
LIMIT
PRE-EMPHASIS
lOO^is
INPUT
ATTEN
for
the
amount
of
G/R
wanted
GATE THRESH
as
needed
to
prevent noise rush-up during
pauses
RELEASE
TIME
5
REL
SHAPE
HARD
for
speech,
SOFT
for
mixed program
material
LEVEL
ON
COMPR
ON
HF
LIMIT
OPERATE
Clipper
jumper
DEFEAT
Cassette
Duplication
METER
CAL
+3
(=
3% THD
level
from
tape)
HF
LIMIT
PRE-EMPHASIS
75|i.s
for
FeO?
or
CrO£
with
Dolby®
HX
Pro
100|i.s
for
CrU
2
without
HX
Pro processing
INPUT
ATTEN
for
G/R
only
on
overload from
master
GATE THRESH
OFF
RELEASE
TIME
0
REL
SHAPE
HARD
LEVEL
OFF
COMPR
ON
HF
LIMIT
OPERATE
Clipper
jumper
DEFEAT
Set level
to
on
to
reduce
the
dynamic
range
of
the master.
The
compressor and
high-frequency
limiter
will
provide
safety
limiting
only.
FM
Subcarrier
Generators
HF
LIMIT
PRE-EMPHASIS
150nS
For
protection
only,
use
the
'STL
Protection" settings
for
the other
controls.
For
pro-
tection
plus
leveling,
use
the
'Broadcast Transmission"
settings
for
the other
controls.
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