Tascam 3030 - Page 18

I TEt{
;ffiFE
StTT IIIG
dx. ,lt:
IliPUT SIGIiAL
X)itrA
ADJUST
iffiH-Ft
RISULT
tffitE
REMRKS
ffi+
13. Frequency response
ffli4&f+tt
(SPEtD:
L0l4)
1 3-1
SPIID ST
OBX
s'r :
: L0ll
OUI
LIilt
IN :
400H2 & 20kHz
/-30dBV(31.
6[lV)
R563/R963
OUTPUT :
[qual level at both frequercy
ffiHffiCIfrfii$L(116
j j
ffi
IJ-Z
LINI II{:
-20d8
(100|llv)
Check
1-
-
,,,4
Frequency response : Fig.3-B
Eiffiffitt
:
El
3-8
I J-J
Same as above
l-til-.]L
DBX sw : li{
Same as
above
Itrtr
Check
*t'v7
Sane as above
ItrJl
14. Honaura I record i ng
t,,t1)W*E
't4-1
SPIID stv :
L0l,l
DBX stt
: OUT
RIC Ftit'{().
sw
:
0lll
:Oti, Cll2:0fI LIt{t Iil:
-30dBv(3'l.ornv)
t 304
I requency response : F i
g.
3-B
HtffiC+tt
:
El
3-B
1i-t
Same as above
Et
RIC FUI{C.
sw
:
()tl1:0FF,
Cll2:0N
Chect(
+-..,4
15
BIAS
FINI
)\472.2r4/
15-1
SPItD
sw: L0l,]
DBX sw :
OUI
LINt
I|{
:
1 kllz/-10dBV
(316mV)
Assurl|e 0n outout refefence level obtained \vhen the
BIAS FINI button is set t0 center. Turn
BIAS FINI
coll|pletely t0 left and right and check that output
level varies
between
-2.5
dB and
+1.5
dB or hisher
against
the
refefence lever.
B I
AS
FINI tJ.
alht+y,
tiltr.0>6o1g7tt##L^Jt.
Lf6.
BiAS FINE -t*.h*ffi*fil3,qLf:Wo>frfi
,arp73t8Flz^JHtf'l
L
-2.
5dB,
+1.
SdB
t)llgYLf
6ZL.*1-t'v2t6.
After
checking, be sure
t0 set BIAS FINE EAC|( t0 the center
Dosition
*
e'y
?l*,
BrAS
FINE 2r.4t+.>
t{ilECtFL(*i<
:
L
.
16. Di stort ion
E+
16- 1
Same as above
IAI
SPI
iD sw : tilG|l
LINE IN :
1 kHzl-10dBV
(316mV)
Check
tt'v ?
DBX
sw
:
both
Iil
& OuT
Total
hurnonic
distortion
+HiEifttE
less
than 0.8
x
17.
Signal to noise ratio
s/ti
!L
17
-1
SPtID sw :
l]lGtl & t0ll No
signal
*f=€
Check
tz'y?
iach
sPeed
ffiJE
:
better than 52 dB
18. Erase
efficiency
iH*4FR
18- 1
Record
a 1 kltz signal,
rewind
and
erase
portion
of
the recording. Playback
the tape t0 conpare
the
output level from
the original
'l
kHz recording
yith
the level from
the erased
pofti0n.
1 kilz
€Bt$**f**FL(--StiFi*,
*iH*#j}LiH*#$h0>
1 kHz
firr,^('Ltaflft.
Connection
is same as in
Fig.3-3, but
engage l kHz filter.
'l
kflz B.P.F.
lFffi.
Thc ryorst
value should
be within spec.
&Effin*t&tlEEf6:L.
Specifications should
be |net
even
yhen
BIAS FINI
is
turned
down to
its
minimum setting.
BIAS
Fllit
.;:t
ts&y'r?L1tffi
trEEf
zo
:
L
.
SPIEO
sy : |-il0tl
LINT IN:
1 kllzlodBV
(1V)
Check
7t'v
7
Better than 68
dB
19. Channel separat ion
Ar4'tV'
t)\V-:z
z
Y
t9-
1
.Connecti0n:
Fig.3-3,
but do not
cOnnect LINE lN
(CHz),
and
engaoe 1 kHz filter.
1 kHz
B,
P. F.
ffrffi
.Set
the deck to record
mode. Find
the difference
between the 1 kHz recOrded
p0fti0n (Ctl1)
and
check reverse
portion.
1 kHz
$*#*il,}
(Ctil)
L*f=+$**#r|
(CHz)
o
1ktlz
F4,fr)1v<tw)#tu[8.
cH1,
CHz
t
MtE
it:&# i:?!
\(
LA
t'y
?
.
SPttD sw : HIGII
LII.IE ItI
:
Ctl 1 : lkHz/
-1OdBV(316nV)
CH2:Nosiona
Check
ttv2
Better
than 50 dB
s
f
f
f
t*
18