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Short Form Instructions
NonnalMode
Play alibration
1.
et
th MODE switch to ORMAL.
2. et your
r
corder so
that it
read tape output.
3.
Play the Dolby
Level
tape
or ca
tte,
and adjust
the
recorder'
output level
controls
(if
any)
o that the
r
corder'
output
meter read to
"
O" (or
set
the recorder'
output
controls at about 2/3 of
their rotation).
4.
Adjust the PLAY CAL
control on
the Model lOOA
o that the DOLBY LEVEL
meter
read to the Dolby
L
vel
line
a
the
tape is
being played. Once
calibrated,
do not
change
the
settings
of th
recorder's
output
level
controls or
the PLAY CAL
controls on
the Model lOOA.
R
cord
alibration
.
Three-head recorder
capable of monitoring
the
tape
while
recording:
1. Be ure that the
output of your
recorder is
set
to
"tap ."
2.
Thread
a
blank
reel of tap
onto the recorder.
tart the
machine
recording.
3. Activate the REC CAL
TO
E
on
the Model lOOA.
While
o
doing,
adjust your
recorder's r
cord
level
con-
trol
until the meters
on
the Model lOOA read to the
Dolby Level line.
B. Two-head recorders (including
ca sette ) which
do
not
allo monitoring the
tape while
r
cording:
Special Mode
Play Calibration
1.
et all
control on th lOOA
so marked
to the
"*"
po ition
,
and your amplifier'
tape
monitor
switch to
"tape."
2.
elect
the
ource of
Dolby-proc
s ed signals
uch
a
FM
or the
amplifier inputs
to which the
econd
d ck i
connected) on
the
amplifier'
input
selector.
3.
librate the Model
lOOA
to the ource, using
a
Dolby
L
el
tone from that
source.
FM
stations will
br
adca
t
a Dolby Level tone from time to time; if
you're
u ing a
nd r
order, play the Dolby Level tape on it.
the Dolb
L
1
tone from the
ource i
heard, adjust
th
Model 1
'
RE ORD
and
P T
VEL
control
o
that th
DO
B
L meter read to the line.
2
1.
Thread
a
blank reel
of
tape onto the recorder.
Start the
machine
recording.
2. Activate
the REC CAL
TO
E
switch
on the
Model
lOOA and adju
t the
recorder'
record level
controls so
that the DOLBY LEVEL
meters
on the lOOA
read to the Dolby Level line
,
and
record
3
or
4 econd
of
the tone.
3.
Rewind the
tape to
the
beginning of
the recorded
tone
and play
it
back,
noting
where
the D LBY LE
L
meter
reads relative to the Dolby Level line. Repeat
step
two, readjusting recorder'
record level
control
depend-
ing on
whether the DOLBY LEVEL meters read below or
above
the
Dolby
Level
line.
4. Play second recording of
the te t tone. Repeat thi
process
until DOLBY LEVEL
meter
read to the line
when
the recording
of
the tone
is played
back.
Making Recordings
1.
After calibration,
do
not
touch
your
recorder's
output
or record level
controls, and
don't touch the
Model
lOOA's
PLAY CAL control
. Use only
the Mod 1
lOOA' I PUT
LEVEL,
RECORD LEVEL,
and
0
T-
PUT LEVEL
controls.
2. Use your machine' record
level
indicator
during
recording.
Do
not use
the
Model
lOOA'
DOLBY LE
L
meter as
record
indicator
-they
are only
for
calibration.
Listening and/or
Recording
The Model
lOOA'
s
decoding
circuits
will now feed
the
properly-decoded signal back
to the
amplifier
for
listening.
At
the
same time,
the Dolby-processed
signal will
be
fed
unaltered to the recorder
connected
to the lOOA.
Thus, to
make a
Dolby-proces
ed
tape
of
the ource
ignal,
all you
need
do
i to
start
the
deck connected
to
the
lOOA
recording
as you
listen. The
tape
that resul
should
be
played
like
any other
Dolby-proce
ed tape,
with the Model lOOA in th
NORMAL
Mode
and
the
01
RED
UCTIO
in.
When Ii tening to
and/or taping Dolby-proce
ed
sources in
this
way,
do not
witch the Model 1
MODE
selector
to ORMAL.
Al o, do
not touch
th
Model lOOA'
s
RECORD
and
UT
control ,
nor any level
control on the tuner
and the
recorder(
).
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