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6-3, RECORDING PERFORMANCE
Initial Settings
.:yfimW:)f
DOLBY NR switch
:
OUT
OUTPUT switch
: REPRO
MPX FIL
switch
: OUT
OSC
switch
:
OFF
TAPE switch
NORMAL
ADJ switch
: OFF
INPUT
switch
REAR
INPUT SELECT switch(REAR): RCA IN
Mode: RECORD
ITEM
SETTI NG
111l!!1]j§
m
5E
12.
Bias-l
Connection
Cf:lW'n :
Fig. 6-8
1\1770-1
13. Rec
azimuth-l
Connection
(
j~m)
: Fig.
6-4
liHf
7:J77o-l
14.
Rec
bias
Connection
Cf:lH7i)
:
Fig.
6-8
S~~1\'177o
Test tape:
MTT-5511
NORMAL
Test tape:
MTT-5561 Cr02
Test
tape:
MTT-5571 METAL
15.
Rec level-1
Connection
(~Ii'1
)
:
Fig.
6-8
5H1fv--':J~-1
Test tape:
MTT
-5511 NORMAL
Same as
above
~L
Test ta pe:
MTT-5561 Cr02
Same
as above
~L
Test tape:
MTT-5571 METAL
16. Rec EO
Connection
(ltIR)
:
Fig.
6-8
R1J1
::J'51 ",'
Te st tape
:
MTT-5511
NORMAL
Sam
e
as above
~L
Test tape
:
MTT-5561
Cr02
Same
as
abo
ve
~L
Test tape:
MTT-5571 METAL
17 Rec
azimuth-2
Connection
CltlM
:
Fig.
6-4
RH"
7
0
7
7o-2
18.
Rec
level-2
Connection
(J~t'i
)
:
Fig.
6-8
Ui!'v--':J(,-2
Test
tapes: same
item 15.
19. Total
harm
onic
Connection
(ItlJ'D :
Fig.
6-8
di stortion
Te
st
tapes:
same
as abo
ve
~.g.~~
DOLBY
NR
:
OUT
INPUT
SIGNAL
ADJUST
HEASURING
POINT,
AtJ~->l-
(or CHECK)
RESULT
1IlI!!@Ip}i
]IJ5E@lp}i ,
lIlI
f£liil
INPUT
(REAR,
RCA
)
Rl01
/R20
1
OUTPUT
(RCA
pin
jack
)
:
400 Hz, 10
kHz/
(Fig.
6- 1
)
Equal
output
level (record
then Re
-40
d8V
( 10.0
mY
)
produce) between
for 400 Hz
and
10kHz.
400 Hz
C
10kHz
O)j~Jl'j:±itJtJ~<I>
l-
<
~.Q~co
INPUT
(REAR,
RCA)
REC
azimuth
OUTPUT
(RCA
pin
jack
)
L
&
R:
Phase between L-ch
&
10
kHz/
40 dBV
adj.
screw
R-ch:
90' or
less
(
10.0 mY)
( Fig.
6-4-2)
L-R
r.'
O)lliffi~
: 90' j;)p'q
Turn
bias adjust pot (s)
CCW and
adju st the
pot CW
INPUT
(R
EAR, RCA
)
carefully.
Set the
.pot
at
position which develops a
value
6.3
kHz/
-
40 dBV
shown below atter rec
/
repro
outpu
t pas
ses
a
peak
level.
(
10.0
mY)
1IlI!!9
i:>;t;'
~
'"
-1.
~-§I.J:I::@)
l-'l;f.;(
\'ltJ,,;;'~q
1::t;I::
Adjusting
point:
19
9
0
t~f!jtetJtJ~
\:'-:)
~
i&~
'lncO)
v--':M::i1TtJCQ
.-21::
~.>
r9Q
o
Fig.
6-1
Rl01/R201
OUTPUT
(RCA
pin
jack
) :
4 dB
Rl02
/
R202
OUTPUT (RCA pin
jack
)
: 3
dB
Rl03/R203
OUTPUT
(RCA
pin jack) : 1
dB
INPUT
(REAR,
RCA)
Rl07
/R20
7
400
Hz
/
-
l0dBV
(3
16
mY)
OUTPUT (RCA pin
jack)
:
Rl0
8/
R208
-
10
dBV
(316
mY)
Adjusting point:
..
Fig.
6-1
Rl09
/R209
IN
PU
T (REAR,
RCA)
Rl04/R204
400
Hz,
10
kHz/
OUTPUT (RCA pin
iack)
:
Adjust
to
obtain same output
le
vel
at
-10
dBV
(316
mY)
10kHz
and 400Hz.
Rl05/
R205
10kHz
tetJtJ~
400
Hz te
tJ
c
~
L:;
I::
Adj usting
point:
>d:.Q J:: ')
II!JM
9.Qo
Fig. 6-1
Rl0S/
R206
INPUT
(
REAR,
RCA)
Check
OUTPUT
(
RCA
pin
jack)
:
Phase
difference
be
tween
simultaneous
400 Hz. 10 kHz
/
and different time REC/PLA Y.
( 10.0 mY)
~e;'ji:\lf!j,
Jt
9 HRJl'jO)inHljf
400 Hz:
45
'
J,:)p'q
-
10
kHz: 90' j;)p'q
INPUT (REAR.
RCA)
Check
OUTPUT (RCA pin
iack
)
:
400
Hz/
-
l
0
dBV
All
tapes
.
DOLBY
NR IN
/
OUT
(3
16
mY)
-12
dBV
to -8
dBV
(251 mV
to
398 mY)
INPUT
(
REAR,
RCA)
Check
OUTPUT
(R
CA
pin
jack
) :
400
Hz/ - 10 dBV
2.0% or
less for all
tapes.
(31
6
mY)
~T-:n:2.0%
J,:)T
- 23
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