SIST EN 60774-1:1999

SLOVENSKI STANDARD
01-april-1999
Helical-scan video tape cassette system using 12,65 mm (0,5 in) magnetic tape on
type VHS -- Part 1: VHS and compact VHS video cassette system (IEC 60774-
1:1994)
Helical-scan video tape cassette system using 12,65 mm (0,5 in) magnetic tape on type
VHS -- Part 1: VHS and compact VHS video cassette system
Video-Bandkassettensystem mit Schrägspuraufzeichnung auf Magnetband 12,65 mm
(0,5 in) VHS-Format -- Teil 1: VHS- und kompaktes VHS Video-Kassettensystem
Système de magnétoscope à cassette à balayage hélicoïdal utilisant la bande
magnétique de 12,65 mm (0,5 in) de format VHS -- Partie 1: Système de cassette vidéo
VHS et VHS compacte
Ta slovenski standard je istoveten z: EN 60774-1:1994
ICS:
33.160.40 Video sistemi Video systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

NORME
CEI
INTERNATIONALE
IEC
774-1
INTERNATIONAL
Première édition
STAN DARD
First edition
1994-01
Système de magnétoscope à cassette
à balayage hélicoïdal utilisant
la bande magnétique de 12,65 mm (0,5 in)
de format VHS –
Partie 1:
Système de cassette
vidéo VHS et VHS compacte
Helical-scan video tape cassette system
using 12,65 mm (0,5 in) magnetic tape
on type VHS –
Part 1:
VHS and compact VHS video cassette system
© CEI 1994 Droits de reproduction
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in writing from the publisher.
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774-1 ©IEC:1994 – 3 –
CONTENTS
Page
FOREWORD 7
SECTION 1: GENERAL
Clause
1.1 Scope 11
1.2 Normative references 11
1.3 Environment 13
SECTION 2: VHS VIDEO TAPE CASSETTE
2.1 Mechanical parameters 13
2.1.1 Cassette dimensions 13
2.1.2 Reel dimensions 13
2.1.3 Tape winding and tape path 13
2.1.4 Unlocking of front cover 13
2.1.5 Opening of front cover 13
2.1.6 Releasing of reel brake 13
2.1.7 Reel spring 13
SECTION 3: COMPACT VHS VIDEO CASSETTE
3.1 Mechanical parameters 15
3.1.1 15
Cassette dimensions
3.1.2 Front cover 15
3.1.3 Reel dimensions and brake force
3.1.4 Tape winding and tape path 17
3.1.5 E value
3.1.6 17
Guide rollers
3.1.7 Reel spring force 17
3.1.8 Positioning screw of take-up reel 17
SECTION 4: TAPE CHARACTERISTICS OF VHS
AND COMPACT VHS CASSETTE
4.1 Dimensions of the video tape
4.1.1 17
Magnetic tape thickness
4.1.2 Magnetic tape width
4.1.3 Magnetic tape length 17
4.2 Magnetic tape properties 19
4.2.1 Type of magnetic tape 19
4.2.2 Magnetic orientation 19
4.2.3 Coercivity 19
4.3 Reference tape 19
4.4 Leader tape and trailer tape 19
4.4.1 Automatic stop 19
4.4.2 Dimensions of the leader and trailer tape (VHS casse tte) 19
4.4.3 Dimensions of the leader and trailer tape (compact VHS cassette) 19
4.4.4 Splicing 19
4.5 Amount of tape remaining 19

_ 5 _
774-1 ©IEC:1994
Clause Page
SECTION 5: VIDEO CASSETTE RECORDERS
5.1 Tape speed 21
5.2 Drum diameter 21
5.3 Tape tension 21
5.4 Inclined azimuth angle 21
5.5 Track configuration and dimensions 21
5.5.1 Record locations 21
5.5.2 Switching position and video signal overlap 21
5.5.3 Relations of video track and video signal field 23
SECTION 6: RECORDING CHARACTERISTICS
6.1 FM recording of luminance component 23
6.1.1 Low-pass filter 23
6.1.2 Pre-emphasis and clipping 23
6.1.3 Modulation characteristics 23
6.1.4 FM high-pass filter 23
6.1.5 Recording level 25
6.2 NTSC chrominance signal recording 25
6.2.1 Recording method 25
6.2.2 Phase rotation of the chrominance signal 25
6.2.3 Recording level 25
6.2.4 Colour burst amplitude doubler 25
6.3 PAL chrominance signal recording 25
6.3.1 Recording method 25
6.3.2 Phase rotation of the chrominance signal 27
6.3.3 Recording level 27
6.4 SECAM chrominance signal recording 27
6.4.1 Recording method 27
6.4.2 Recording level 27
6.5 Audio signal recording 27
6.5.1 Recording level 27
6.5.2 De-emphasis characteristics 29
6.6 Control signal recording 29
6.6.1 Recording signal 29
6.6.2 Polarity 29
6.6.3 Recording current wave-form 29
Figures 30
Annexes
A Type of VHS cassettes and specifications 71
B Designation of compact VHS video cassettes and specifications 73
C Reference tape 75
D Compact VHS video cassette adaptor 77
E Alternative method of SECAM chrominance
signal recording 81
774-1 ©IEC:1994 _ 7
INTERNATIONAL ELECTROTECHNICAL COMMISSION
HELICAL-SCAN VIDEO TAPE CASSETTE SYSTEM
USING 12,65 mm (0,5 in) MAGNETIC TAPE
ON TYPE VHS —
Part 1: VHS and compact VHS video cassette system
FOREWORD
1)
The IEC (International Electrotechnical Commission) is a worldwide organization for standardization
comprising all national electrotechnical committees (IEC National Committees). The object of the IEC is to
promote international cooperation on all questions concerning standardization in the electrical and
electronic fields. To this end and in addition to other activities, the IEC publishes International Standards.
Their preparation is entrusted to technical committees; any IEC National Committee interested in
the subject dealt with may participate in this preparatory work. International, governmental and
non-governmental organizations liaising with the IEC also participate in this preparation. The IEC
collaborates closely with the International Organization for Standardization (ISO) in accordance with
conditions determined by agreement between the two organizations.
2)
The formal decisions or agreements of the IEC on technical matters, prepared by technical committees on
which all the National Committees having a special interest therein are represented, express, as nearly as
possible, an international consensus of opinion on the subjects dealt with.
3)
They have the form of recommendations for international use published in the form of standards, technical
reports or guides and they are accepted by the National Committees in that sense.
4)
In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
International Standard IEC 774-1 has been prepared by sub-committee 60B: Video
recording, of IEC technical committee 60: Recording.
This first edition cancels and replaces the first edition of IEC 774 published in 1983.
The text of this standard is based on the following documents:
DIS Report on voting
60B(CO)150 60B(CO)167
Full information on the voting for the approval of this standard can be found in the repo
rt
on voting indicated in the above table.
IEC 774 consists of the following pa rts, under the general title:
Helical-scan video tape
cassette system using 12,65 mm (0,5 in) magnetic tape on type VHS:

774-1 © I EC:1994 – 9 –
-
Part 1: VHS and compact VHS video cassette systems;
–
Part 2: FM-audio recording (replacing IEC 1054);
-
Part 3: S-VHS video tape cassette system (in preparation);
- Part 4: PCM-audio recording
(in preparation).
Annexes A, B and C form an integral part of this standard.
Annex D is for information only.

774-1 ©IEC:1994 – 11 –
HELICAL-SCAN VIDEO TAPE CASSETTE SYSTEM
USING 12,65 mm (0,5 in) MAGNETIC TAPE
ON TYPE VHS –
Part 1: VHS and compact VHS video cassette system
Section 1: General
1.1 Scope
This part of IEC 774 is applicable to the basic VHS and compact VHS video cassette
system. Compact VHS video cassette is used just like the normal VHS video cassette with
the aid of a cassette adaptor (see annex D for an example of a compact video cassette
adaptor) for recording and/or reproducing video and audio signals in accordance with the
system defined in this standard. This standard defines the electrical and mechanical para-
meters and the necessary characteristics of the VHS and the compact VHS video cassette
system. The requirements relate to the 525 line-60 field and 625 line-50 field TV systems.
Equipment manufactured according to this standard and tapes recorded following this
standard, provide the necessary interchangeability of recorded video cassettes.
1.2 Normative references
The following normative documents contain provisions which, through reference in this
text, constitute provisions of this part of IEC 774. At the time of publication, the editions
indicated were valid. All normative documents are subject to revision, and parties to agree-
ments based on this part of IEC 774 are encouraged to investigate the possibility of
applying the most recent editions of the normative documents indicated below. Members
of IEC and ISO maintain registers of currently valid International Standards.
rt 1: Gen-
IEC 94-1: 1981, Magnetic tape sound recording and reproducing systems – Pa
eral conditions and requirements
IEC 756: 1991, Non-broadcast video tape recorders – Time base stability
IEC 1041-1: 1990, Non-broadcast video tape recorders – Methods of measurement –
Part 1: General video (NTSC/PAL) and audio (longitudinal) characteristics
IEC 1041-3: 199x, Non-broadcast video tape recorders – Methods of measurement –
Part 3: Audio characteristics for FM recording (in preparation)
IEC 1054: 1991, Helical-scan video tape cassette system using 12,65 mm (0,5 in)
magnetic tape on type VHS-FM audio recording
IEC 1105: 1991, Reference tapes for video tape recorder systems

774-1 © I
EC:1994 – 13 –
1.3 Environment
Tests and measurements made on the system to check the requirements of this standard
shall be carried out under the following conditions:
Temperature: 20 °C ± 1 °C
Relative humidity: (50 ± 2)
Barometric pressure: 86 kPa to 106 kPa.
Section 2: VHS video tape cassette
2.1 Mechanical parameters
2.1.1
Cassette dimensions
The dimensions of the cassette shall be in accordance with figures 1 to 4.
2.1.2
Reel dimensions
The dimensions of reels shall be in accordance with figure 5.
2.1.3
Tape winding and tape path
The tape winding and the tape path shall be in accordance with figure 6. The E value of
the tape pack shall be greater than 1,5 mm. See note 4 of figure 4, for E
value.
2.1.4 Unlocking of front cover
The unlocking of the front cover shall be accomplished when a force no greater than
0,15 N is applied to the cover unlocking pin, as shown in note 8 of figure 1.
2.1.5 Opening of front cover
The force necessary to open the front cover as shown in note 3 of figure 3, shall be less
than 1 N.
2.1.6 Releasing of reel brake
The reel brake shall be released by the reel brake unlocking pin as shown in note 4 of
figure 3, with a force less than 0,7 N.
2.1.7 Reel spring
The reels in the cassette shall be pushed down by the reel spring with a force of 1,6 +0°: N,
with the reels in the position indicated in figure 4.

774-1 ©IEC:1994 – 15 –
Section 3: Compact VHS video cassette
3.1 Mechanical parameters
3.1.1 Cassette dimensions
The dimensions of the compact VHS video cassette shall be in accordance with figures 7
to 12. The cassette dimensions are given for two types of front covers, with and without a
front cover locking structure.
3.1.2
Front cover
3.1.2.1 Front cover with a locking structure
The front cover with a locking structure is shown in figure 13. With this type of cassette, a
permanent spring force is used to keep the front cover shut. The forces F 1 and F2 neces-
sary to open the front cover with the lock released, as defined in note 1 of figure 13, shall
be as follows:
0,1N <_F1<_0,25N
0,05N<_ F2<_ 0,2N
Even when the front cover is locked, it shall be forcibly released with a force F3 of less
than 0,8 N applied to the unlocking position, as indicated in note 3 of figure 13. The un-
locking pin shall be pushed to the unlocking position indicated in note 4 of figure 13 with a
force F4 less than 0,8 N. The unlocking pin shall be pushed to the su
rface of the cassette
side wall with a force F5 less than 3 N (see note 6 of figure 13).
3.1.2.2
Front cover without a locking structure
The front cover without a locking structure is shown in figure 14. The front cover has two
stable positions, completely closed and completely open. The front cover shall open or
close by itself when it is within an angle of 20° of its completely open or completely closed
position as indicated in note 1 of figure 14. The forces F1 and F2 necessary to open and
close the front cover as shown in figure 14 shall be as follows:
0,05N<_F1 <_0,2N
0,05N<
0,2N
F2<_
3.1.3 Reel dimensions and brake force
The dimensions of the reel shall be in accordance with figures 15 and 16. The tape shall
be pulled out with the following force as shown in note 3 of figure 15, and note 2 of
figure 16, with the brake engaged:

Supply reel: 0,4N<_ F<_ 1,5N
Take-up reel: 0,05N<_ F5_ 3N
_ 17 _
774-1 ©IEC:1994
3.1.4 Tape winding and tape path
The tape winding and tape path shall be in accordance with figure 17.
3.1.5 E value
The E values If and /2 are shown in note 1 and note 2 of figure 17 and shall each be
greater than 0,7 mm.
NOTE — E value is the radial clearance between the outer edge of the wound tape and the edge of the reel
flange.
3.1.6 Guide rollers
Guide rollers shall be provided as shown in figure 17. The inclination of all rollers shall be
within 0,1 mm.
3.1.7 Reel spring force
The reels in the cassette, as shown in note 4 of figure 18, shall be pushed down by a reel
spring with the following forces:
Supply reel:
1,6Nt0,4N
+0,3 N
Take-up reel: 0,7
-0,2
3.1.8 Positioning screw of take-up reel
The deviation of the centre of the positioning screw head shall be less than 0,05 mm from
the take-up reel axis (see figure
18).
Section 4: Tape characteristics of VHS and
compact VHS cassette
4.1 Dimensions of the video tape
4.1.1 Magnetic tape thickness
The maximum thickness of the magnetic tape, including the coating, shall be 20,0 µm. See
annex A for alternative thicknesses of VHS cassette and annex B for compact VHS
cassette respectively.
4.1.2 Magnetic tape width
The width of the magnetic tape shall be
12,65 mm ± 0,01 mm.
4.1.3 Magnetic tape length
For the length of the magnetic tape of VHS cassette, see annex A, and annex B for com-
pact VHS cassette.
774-1 © I EC:1994 –19 –
4.2 Magnetic tape properties
4.2.1
Type of magnetic tape
The type of magnetic tape to be used shall be high-resolution magnetic tape (for example
cobalt iron oxide tape).
4.2.2 Magnetic orientation
The magnetic coating shall be longitudinally oriented.
4.2.3 Coercivity
The coercivity shall be approximately 50 x 10 3 A/m.
4.3 Reference tape
The reference tape numbered VRT-2 is applicable. Details are described later in annex C.
4.4 Leader tape and trailer tape
4.4.1 Automatic stop
The light transmittance of the leader and trailer tape shall be at least 50 % for VHS
cassette and more than 70 % for compact VHS cassette respectively in order to ensure
that the automatic stopping device of the machine functions properly at both ends of the
magnetic tape.
4.4.2
Dimensions of the leader and trailer tape (VHS cassette)
Leader and trailer tape length shall lie between 130 mm and 190 mm. As for exact length,
which is dependent on hub size used, see annex A.
Leader and trailer tape thickness shall be 40 + 255 and the width shall be 12,65 mm
± 0,03 mm.
4.4.3 Dimensions of the leader and trailer tape (compact VHS cassette)
The leader and trailer tape length shall be 80 mm ± 5 mm and 110 mm ± 5 mm respectively.
The leader and trailer tape thickness shall be 20 6
+ gm and the width shall be 12,65 mm
± 0,03 mm.
4.4.4 Splicing
The splice and the attachment of the leader and trailer tape to the hub shall be capable of
resisting a force of 30 N. The splicing gap shall be less than 0,07 mm.
4.5 Amount of tape remaining
The window and the upper flange of the supply reel shall be transparent to indicate the
amount of tape remaining.
774-1 ©IEC:1994
–21 –
Section 5: Video cassette recorders
5.1 Tape speed
TV system
Standard speed
Tolerances
mm/s %
525 line-60 field 33,35
± 0,5
625 line-50 field
23,39 ± 0,5
5.2 Drum diameter
The drum diameter shall be 62,00 mm ± 0,01 mm.
NOTE – Different dimensions of drum diameter are also possible as far as the track configuration and
dimensions are in accordance with figure 19 and table 2.
5.3 Tape tension
The tape tension during recording and reproducing shall be between 0,30 N and 0,45 N,
measured at the entrance of the drum.
5.4 Inclined azimuth angle
The gap line of video heads shall be slanted in accordance with the figure below.
6° ± 10'
Video head channel 1
6° ± 10'
Video head channel 2
5.5 Track configuration and dimensions
5.5.1 Record locations
The track configuration and dimensions shall be in accordance with figure 19 and table 2.
5.5.2 Switching position and video signal overlap
The switching position between the two video heads shall lie between five and eight
horizontal scanning lines ahead of the front edge of the vertical synchronizing pulse. The
minimum overlap of the two video heads shall be three horizontal lines.

774-1 ©IEC:1994 – 23 –
5.5.3 Relations of video track and video signal field
The track used for the first field of the recorded video signal is not specified. However,
recorders which can distinguish between fields shall record the first field on the channel 1
track.
Section 6: Recording characteristics
6.1 FM recording of luminance component
6.1.1 Low-pass filter
The luminance component of the composite vido signal shall be separated by a low-pass
filter, the attenuation of which is greater than 40 dB at the
chrominance sub-carrier
frequency.
6.1.2 Pre-emphasis and clipping
The luminance signal shall be pre-emphasized and clipped prior to frequency modulation.
The characteristics of the pre-emphasis network measured without the low-pass filter are
shown in figure 23, and clipping levels are shown below. The level from sync tip to peak
white is 100 %.
+15)
White clipping level: (160 % measured from sync tip.
Dark clipping level: measured from sync tip.
(40 ± 10) %
6.1.3 Modulation characteristics
FM carrier frequencies corresponding to reference video levels shall be as shown in the
following table 1.
Table 1 – FM carrier frequency
525 line-60 field 625 line-50 field
Reference white level 4,4 MHz ± 0,1 MHz 4,8 MHz ± 0,1 MHz
Reference sync level
3,4 MHz ± 0,1 MHz 3,8 MHz ± 0,1 MHz
Frequency deviation, white to sync 1,0 MHz ± 0,1 MHz 1,0 MHz ± 0,1 MHz
6.1.4 FM high-pass filter
The amplitude frequency response of the FM high-pass filter shall be in accordance with
figure 22.
774-1 ©IEC:1994 – 25 –
6.1.5 Recording level
The recording current shall have the optimum value at all frequencies within the entire FM
carrier range, as defined in table 1.
NOTE — Optimum record current is the recording current value which is necessary to obtain the maximum
output signal level during playback.
6.2 NTSC chrominance signal recording
6.2.1
Recording method
The chrominance signal is separated from the NTSC colour video signal through a band-
pass filter with a centre frequency of 3,58 MHz and –3 dB points at ±500 kHz.
The separated chrominance component shall be then down-converted so that its new
carrier frequency equals 40 times the horizontal scanning rate. This recording process is
illustrated in figure 20 and explained in 6.2.2.
6.2.2 Phase rotation of the chrominance signal
The chrominance signal of channel 1 track shall be phase advanced by 90° at every
horizontal sync interval. The chrominance signal of channel 2 track shall be phase
retarded by 90° at every horizontal sync interval.
Phase shift should be completed prior to the colour burst. Channel 1 and channel 2 are
specified in clause 5.4.
6.2.3 Recording level
The chrominance signal is recorded with the FM signal acting as bias. Its record level
should be adjusted so that the playback level is 7 dB to 10 dB below the level corre-
sponding to the saturation record level of this chrominance signal with the optimum FM
bias current.
NOTE — The saturation record level of the unmodulated chrominance carrier is reached when the play-back
level no longer increases with increase in record current.
6.2.4 Colour burst amplitude doubler
The amplitude of the colour burst shall be increased by {6 ± 0,5) dB prior to recording.
6.3 PAL chrominance signal recording
6.3.1 Recording method
The chrominance signal is separated from the PAL colour video signal through a band-
pass filter with a centre frequency of 4,43 MHz and –3 dB points at ±500 kHz.

774-1 ©IEC:1994 - 27 -
The separated chrominance component shall be then down-converted so that its new
carrier frequency equals 40 times the horizontal scanning rate plus 1,953 kHz
(626,953 kHz).
This recording process is illustrated in figure 20, and explained in 6.3.2.
6.3.2 Phase rotation of the chrominance signal
The chrominance signal of channel 2 track only shall be phase-retarded by 90° at every
horizontal sync interval. The channel 1 track remains at 0°. Phase shift should be
completed prior to the colour burst. Channel 1 and channel 2 are specified in clause 5.4.
6.3.3 Recording level
The chrominance signal is recorded with the FM signal acting as bias. Its record level
should be adjusted so that the playback level is 7 dB to 10 dB below the level corre-
chrominance signal with the optimum FM
sponding to the saturation record level of this
bias current.
chrominance carrier is reached when the play-back
NOTE – The saturation record level of the unmodulated
level no longer increases with increase in record current.
6.4 SECAM chrominance signal recording
6.4.1 Recording method
The chrominance signal is separated from the SECAM colour video signal through a band-
pass filter with a centre frequency of 4,32 MHz and -3 dB points at ±800 kHz.
The separated chrominance component shall be counted down so that the frequency of
the recorded chrominance signal becomes a quarter of the input chrominance frequency.
This recording process is illustrated in annex E, figure El. An alternative method of
SECAM chrominance signal recording is illustrated in figure E2.
6.4.2 Recording level
The chrominance signal is recorded with the FM signal acting as bias. Its record level
should be adjusted so that the play-back level is 7 dB to 10 dB below the level corre-
sponding to the saturation record level of this chrominance signal with the optimum FM
bias current.
NOTE – The saturation record level of the unmodulated chrominance carrier is reached when the play-back
level no longer increases with increase in record current.
6.5 Audio signal recording
6.5.1 Recording level
The recorded reference audio level shall be 100 nWb/m.

774-1 © IEC:1994 - 29 -
6.5.2 De-emphasis characteristics
The recording and reproducing characteristics of the audio signal, as defined in section
three of IEC 94-1
shall make use of the following time constants.
t: 1 120 µs
t2: 3 180 µs
6.6 Control signal recording
6.6.1 Recording signal
A positive going edge of the recorded control pulse signal shall be coincident with the start
of channel 1 track scanning as shown in figure 2
24. Channel 1 and channel video tracks
are specified in clause 5.4.
6.6.2 Polarity
The control head pole tip nearest to the video drum assembly shall be north polarized
when the control signal pulse is positive.
6.6.3 Recording current wave-form
The rise time shall be less than 200 µs.
Table 2 - Track configuration (see figure 19)
Dimensions in millimetres
625 line-50 field
525 line-60 field
A Tape width 12,65 ± 0,01 12,65 ± 0,01
B Total video width 10,60
10,60
W Effective video width (180°) 10,07 10,07
L Videotrack centre from reference edge 6,2 6,2
of the tape
P Video track pitch 0,058 0,049
T Video track width 0,058 0,049
C Control track width 0,75 ± 0,1 0,75 ± 0,1
R Audio track width (monophonic) 1,0 ± 0,1 1,0 ± 0,1
D Audio track (channel 2) width 0,35 ± 0,05 0,35 ± 0,05
(stereophonic-right)
E Audio track (channel 1) width 0,35 ± 0,05 0,35 ± 0,05
(stereophonic-left)
F Audio track reference line 11,65 ± 0,05 11,65 ± 0,05
h Audio to audio track guard band width 0,3 ± 0,05 0,3 ± 0,05
Video track angle
e 5°58'09,9" 5°57'50,3"
eo Video track angle (tape stationary) 5°56'07,4" 5°56'07,4"
X Position of audio and control head 79,244 79,244
NOTE - Where tolerances are not given, the quoted values are nominal.

-30-
774-1 ©CEI:1994
15±0,2
Note 8 3,5 ± 0,2 Note 3
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Ô Ô
+I
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14± 0,2
C 1,5±ôz
R 5± 0,3
7+0.3
97 ± 0,2
-0.5
.n
Note 9
4 ±0,15
25 ± 0.2
+0.-{3 I
.3
5±0,2 ^21
Note 7 -\
R 5± 0,3
R 0,5± R
0,2 0.3±0,2
^
Note 10
Note 5
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+1
^
co
Note 1
Note 2
ro
Inférieur à
Less than
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N tV
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d0 O O p
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+1
N O
CO
C_
OIL
a) f0 Nt
+0.3
2 5
R 2± 0.3
Note 6
R 2± 0,3
R 5±0,3 1 5+0 1
5 ±0,2 (104) Note 4
10 ±0,2
Note 9
'ô +I
+i
+i +
rn t.0
‘.0
`a r) ô
ô ô
Section A-A
Section C C Section D-D
196/83
Dimensions en
millimètres
Dimensions in millimetres
Pour les notes, voir page suivante
For notes, see next page
Figure 1 - Aspect de la cassette
vidéo. Vue de des
...