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Nagra III - Description of Tests Performed

Nagra III
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1
See
attached
explanations
Voi r
explications
ci-apres
*
*
DESCRIPTION
OF
TESTS
DESCRIPTION
DES
CONTROLES
1)
Visual
and
mechanical
1)
Contrale
visuel
et
inspection
mecanique
2)
Pinch
wheel
pressure
2)
Pression
de
contact
du
contre-cabestan
)
r'
. )
g
Feed
tape
tension
of
the
Tension
de
debit
du
tape
ruban
'
~
~
g
Take
up
tension
Tension
d'embobinage
~~
g
3)
Tachometric
head
voltage
3)
Tension
tachymetrique
at
3,75"/s
a 9 , 5
cm/s
\
mV
4)CURRENT
CONSlft.IPT
ION
*
4)
CONSOMMATION
DE
COURANT
*"
TEST
TEST
~
rnA
PLAYBACK
at
7,5"/5
PLAYBACK
a
19
cm/s
)
S'l
rnA
RECORD
at
7,5"/5
\~
)
-
~
rnA
(Beginning
of
a
5"
reel)
RECORD
a 19
cm/s
(Debut
de
bobine
5"
)
5)
No
speed
overshoot
of
5)
Pas
d'emballement
au
.
starter
circuit
*
dema
rrage
*
6)
SPEED
CONTROL
6)
CONTROLE
DE
VITESSE
Absolute
speed
*
Vitesse
absolue
*
Drop
of
speed
due
to
Baisse
de
vitesse
par
-(), '
%f
reinage
du
cabestan*
IS"
braking
of
the
caps
tan
*
-
,
.
........
%
-
) , l \
%
7,5"
3,75"
7)
Wow
and
flutter
7)
Pleurage
et
scintillation
'+
+0
Valeur
de
pointe
*
IS"
.)
J )
- 6
Peak
va
1 ue *
~
1:%
7 , 5 "
)
j
~
3,75
I,
I)
Yl
±%
8)
Tension
limit
e
des
pil
es
8)
Battery
voltage
limit
)
Limit
voltage
at
15"
/s
*
Tension
limite
a
38
cm/s*
-'t~
f'1
v
I
Tension
limite
au
Limit
voltage
of
~
~.
~
V
!v!odulometre
*
~!odulometer
*
i
9)
Essais
subjectifs
avec
earphones
and
loudspeaker
9)
Subjective
tests
\1i
th
mike
microphone,
casque
et
haut-parleur
10)
Contrale
de
phas
e
des
and
recording
heads
and
10)
Phase
control
of
reproducE
tE~tes
d'enregistrement
et
-
de
lecture
et
du
transfor-
mateur
de
sortie
output
transformer
11)
Signal
de
re
ference
11)
Reference
signal
-
Start-stop
pour
BH
Start-stop
for
BH
only