Record-Playback, Harmonic Distortion Measurement; Record-Playback Signal-To-Noise Ratio Measurement - Marantz SUPERSCOPE CD-320 Service Data

cD-320
58.17 Rlcord-Pl.ybâck, Hârmonic Ohrortion M.$.
SET UP
. 50/60 Hz AC voltâge rated fro the unil to b€
used in a rnarket country.
. D C 6 V
2. Input: 1 kH2, 60 dB signal
3. Playback output level: Same âs the recoroeo
signal level
5 .
Load: Measurinq instrument input impedance
M e a s u r i n g o u t p u t t e r m i n a l : L I N E O u t p u t
C a s s e t t e t â p ê u s e d : l D K A C - 2 1 1 , A C - 5 1 1 a n d
soNY cs.30
? F O C E O U B E S
1. Record the 1 kHz signal in the norm.t r€cording
2. Play the recorded signal back in rhe normal play,
bæk nate. Calibrate the harmonic distortion
meter to l0o% ar the TNPUT coNT. adjurt the
a d j u s i i n g k n o b t o r m i n i m u m m e t e r p o i n t e r d e f t e c -
lion, and reâd the harmonic disrortion.
3. Proceed both for th€ right ând left channets rô
lhe râme manne..
4. Præeed for the NORMAL, CrOz ând Fe.Cr posi.
rions each in the same mânner.
S T A T O A R O S
L Less than 2.5% for rhe NOFMAL and CrO, posi-
2. Less thân 3.5% lor the Fe.Cr posirion.
C A U T I O N S
l. 8e tùre to demagnetize the heads âs the measur€d
vâlues may d€viate from the accu.ate values,
2, Note thar exce$ive wow and llurrer also causes
devialion of the measur€d values.
58.18 Rscord.Plâyb.ck Signd-to-Noit. Rrtio M..r.
SET UP
. 50/60 Hz AC voltâg€ raæd lor the unh to b€
ur€d an a mârket counùy.
. o c 6 v
2. Input: I kHz, -60 dB risnal
3. Playback outpur levelr Sam€ as thè r€corded
4. Load: Me$uring insùument input impedance
5. Me6uring ourpur ærminal: LINE Ourput
6. Cass€tte rap€ used: TDK AC.2ll, AC-s
.nd
soNY cs-30
P N O T E O U R E S
l . B € c o r d t h e 1 k H z s i g n a l i n 3 d B . b o v € r h e n o r m â l
2. Oisconnect the input sign.l from the macrophone
jack. In $is siate, record no signal.
3. Plây the I kHz rignal back in the normâl plâyback
starc with the use of the t.E.C. A.Curva Fitrer.
Let the outpur levêl bê 0 dB as relerenc€ tevôI.
4. Re.d diffefonce bêtween the recorded 0 dB ref,
erencê output and no4iqnâl ourput levels.
5. Proceed both fo. the right ând l€ft channek in
tn€ sâm€ mânner.
6- Set the DOLBY switch ro the ON position, ano
proceed with similâr mea3urem€nr.
SIAI{OARDS
L Greater thân 56 dB
DOLBY rwitch.
2. Greâter thân 46 dB
DOLBY swilch.
CAUTION
for the ON position of thê
for the OFF positaon of thê
Arângê the CD-320
cord lor minimum hùm
1 4