Nagra IV S Owners Manual

Page 2

[kl/Min WE$

INSTRUCTION MANUAL

Code Nr. 20.06.004.161

SPECIFICATIONS Section I
PREPARATION AND OPERATION Section 2
CONTROLS: WHAT THEY DO AND

HOW THEY DO IT Section 3
FM TRACK Section 4
NOISE ADDED TO A SIGNAL BY A

TAPE RECORDER Section 5
ACCESSORIES Section 6

KUDELSKI SA

NAGFIA Tape Recovdets ManuIaclmv
CH IO33CIIeseaux/Lausanne
Swauerland

Phone: I021)9L2I.2I

Telex: 459 302 nagr ch

Printed in Switch!!! by KUDELSKI S.A.
4-. .. Masque; ' ._ , . .

w. W 4-" '4' v" *

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Distortion at max. peak level, 15 in: STD

3rd harmonic 1 i (2 95)
Signal-tonal:- ratio, record and playback, at max.
peak level
16 int (33 cm/s) NAGRAMASTER

(13m) NAB 74.5 dB (72 dB)
CCIR 73.5 dB (71 dB)

NAB 70.5 dB (68 d8)
CCIR 58 dB (66 dB)

NABBB dB (65dBi
CCIRM.5dB (62d8)

Non-pilot modal (wide track)
SIN ratio improved by approx. 1.5 dB

Phase fluctuation between channels
7%ips(19crm), 10 kHz 315 (2 20')
Cross talk during record and playback

1 kHz 60 dB (50 dB)
10 kHz 50118 (40 dB)

15 ips (38 cm/s) STD

7% ins (19 cm/s) STD

Inaertion of a noise reduction system (NRS)
Low impedance output to NRS,

voltag for 0 d8 modulorneter 560 mV
input for NR8, impedance approx. 10 kn, voltap
for 0 as on the modulomatar 560 mV
OUTPUTS
Una output voltage at 5 kn, for 0 dB modulo-
metor 1 V
Max. output voltage for 5 kn, giving 1 a! distortion
at 1 kHz 3V (2.81
Maximum output voitage to 2000 headphones,
tor 0 dB moduiometer, at 1 kHz .7V

PILOT TRACK

Posxible speeds 7Aips/15 ips
Carrying frequency 13.5 kHz
Static linearity (2 1,)
Maximum frequency deviation Mo 2 45 a.
(2 40%)
Frequency response at < 3dB O to 2.7 kHz
(0 to 2.5 kHz)

Signal-tonoisa ratio for
a 40 1». frequency deviation > 50 dB
Input voltage for a 20 as (requency deviation
Pilot input : 1.4 V 2 5 st
CUE t 1 V 1 5 .9

Distortion for a 40 9% frequency deviation at 400m
< (2%)

Distortion au nivaau M.P.L. a 38 cm/s standard
harmonique 3 1 it (2 5)

Rapport signal/bruit an anregittremant-Iectura,
nivaau M.P.L.

38 crn/s NAGRAMASTER

(13m) NAB 74,5dB (72dB)
CCIR 73.5018 (71d8)

38 cm/s standard NAB 70,5 (18 (68 dB)
CClR 88 dB (66 dB)

19 cm/s standard NAB 68 dB (85 dB)
CCIR 64.5 dB (62 d8)

Appareii non pilote (piste large)
Amelioration du rapport S/B denviron 1,5 dB

Fluctuation da prim antra canaux

19 cm/s. 10 kHz 3 15° (2 20°)
Recul de la diaphonie en enragistrament-iecture
1 kHz 60 dB (50 d8)

10 kHz 50 :18 (40:18)

Insertion d'un systéme réducteur de bruit N.R.S.
(noise reduction system)

Sortie vers N.R.S., base impedance, tension

pour 0 d8 au modulometre 560 mV
Entree pour N.R.S., impedance any. 10 km
tension pour 0 d8 au modulométre 560 mV

SORTIES
Tension de sortie ligne sur 5 kn. pour 0 dB au
modulometre 1 V
Tension maximale de sortie sur 5 kn, pour 1 X
de_distorsion a 1 kHz 3 V (2.8)
Tension maximaie da aortic sur casque 200 n,
pour 0 d8 au modulometre, 1 kHz 0.7 V
PISTE PILOTE
Vitesse dutilisation 19/38 cm/s
Fréquence porteuse 13.5 kHz
Linéarite statique (2 ti)
Excursion max. de fréouence Mo 2 45 3
(z 40 "4)
Courbe de réponse a -3 d8 0 a 2,7 kHz
(0 a 2,5 kHz)

Rapport S/B pour une excursion de 2 40 '3 > 501213

Tension dentrée pour une excursion de 2 20 '1

entree pilote : 1,4 V 1 5 r:

CUE : 1 V . 5':

Distorsion pour une excursion de 2 40 7. a 400 Hz
\: (2 ft)

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32

35

Pinch Wheel and Tape Guide Control Lever
Engages and disengeget the pinch wheel and the
tape guides, and activates the micro twitch
locking the rewind control.

- Lever pulled: pinch wheel released:
rewinding possible.

pinch wheel engaged:

position for recording and
playback. fast lorward also
possible.

- Lever pushed:

RECORD EQUALIZATION ADJUSTMENT
(record at - 20 dBl;

Adjustment of reeble ore-emphasis for recording,
Permits the use of tapes other than originally
intended and the best possible recording curve.

LEFT~HAND SIDE

38

39

40

41

42

43

Right-hand Microphone Selector

6 positions:

- dynamic mike, 50 Q

- dynamic mi Re, 200 S1

- electrostatic mike, phantom 4' 12 V
- idem, 648 V

- idem. -12 V

- electrostatic mike, T +12 V

Lek-hand Microphone Selector
Same function: as 38.

MIKE PHASE Switch
For phase inversion of the left hand mike input.

INPUTS, Line

This input, impedance zero, should be fed by
current, minimum resistance of the generator
47 (Z. A current of 8.5 MA gives 0 dB on the
modulometer. level control fully open. A special
cable is used for voltage supply (0.5 V min.)
0 d8 on the modulometer.

EXT. NR5 Socket

A NRS (Noise Reduction System) accessory.
e.g. DOLBY or 08X can be connected to this
socket using the OSNES accessory.

OUTPUTS
LlflE output, I V for 0 dB on the modulometer.
load impedance > 500 S1.

RIGHT-HAND SIDE

44 PILOT m Input

45

Input of the pilot Signal and clapper

LINE OUTPUT RIGHT
Same characteristics as output 43,

46

47

LINE OUTPUT LEFT
Same characteristics as output 43.

CUE Socket

Output of pilot signal and recording or playback
of commentary which can be recorded on the
pilot track.

POWER PACK Input

Input lor external power supply (-12 V to
-30 V) and for the speed yariator.

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