Siemens Q 20-A 1010 Datasheet

Page 1
SIEMENS
TV
Transmitter
with
5/O.5 kW
modulation
EEHT
fixed
a
Band
lF
lll
Page 2
Contents
l. Design
ll. Features
lll. Construction
lV. Principles ol
V. Electrical Data
Vl.
Scope of
Operation
Delivery
lssued by Bereich Bauelemente, Vertrieb, 8000 München 80,
Terms of delivery and
lo chanqe desisn reserued-
rishls
Balanstraße
73
Page 3
l.
Design
The
5/0.5 kW
combined
sou nd
The 150/15
is
located
suppljes The-standard
ance channel
be
supplied
bandwidth), bandwidth).
picture/sound
picture/sound
W
tina I
stage.
W stage
in
in
a second
with
the CCIR
bandwidth).
to the FCC
or OIRT
one cabinet,
version
For
color-compatible Modulation
quality
The
lower
incorporate
The
transmitter
ol 174
tuned
Forced
operates
larger is not
ll.
Features
Small Picture
power amplifier,
second cabinet. Combined
Transmitter
mendations Fault memory
at lixed
requirements
signal level
silicon
to 230
to a fixed
air
cooling
from
a three-phase
mains
variations
supplied
dimensions.
and
sound transmitter
supply in
5/0.5 kW,
picture/sound
interlock
215-1.
for
VHF
Band
with associated power
cabinet.
is designed
Recommendations
lf required
standard (52b
standard
these
systems
to the NTSC,
lF assures
with
stages
transistors,
can be
tuned
MHz. Before
channel.
only is
a
mains regulator
part
as a
one cabinet,
with
of
associated
amplif
in accordance
39 functions.
lll retevision
ampli{ication
stage
and rhe
the
5/0.S kW
for
operation
the
transmitter can
(625
lines,
the transmitter
PAL
or
the transmitter
excellent
delivery,
employed.
long,term
up
to 5 W
power
the
over the
the
The
3aO/22OV
the transmitter.
picture
and sound
power
ication.
with IEC
transmitter with
consists of the
b/0.5 kW
stage with
(625
lines, 6 MHz
8
SECAM standards.
output
stages tetrodes.
entire band lll
transmitter is
transmitter
*3%
is required.
W, with associated
supply in
picrure/
supplies
in accord-
lines.
MHz
channel
is fully
meets
stability.
power
mains.
power
Recom-
power
T MHz
also
channel
high
range
For
This
a
Transmitter preamplifier
of approx.5 W
The
electronic
voltages
lvlod
ulation
For TV
mendations Also available Completely
standards.
lll.
transmission
Construction
fitted
voltage
are transistorized.
at fixed
lF.
in
(625
lines,
lor FCC
color- comparible
(fig.2)
The cabinets
high
have lockable
for monitoring
instrument
For
signal cabinet exciter unit,
5/0.5 W
with the
The second
four-circuit
supply and
It is advisable
equipment
High long
transmitter stations. A remote the transmitter signals. On manned centrally from
An interlock loop
operators errors. All have to be
person
nel.
685
mm wide.
all important
panel
above
processing
contains
the video
video modulator,
output
power
power
supply and
cabinet
adjacent
protection
because
in a
separate
term
stability
especially
control
and
the
transmitter
prevents
adjusted
doors at
contains
channel
transmits
stations
control
occassionally
stages up
with
silicon transistors.
regulators
accordance
channel
or OIRT
to an output
for
with CCIR
bandwldth 7
standards, if requested.
for NTSC,
1072
mm deep
the back
parameters
the front
and
amplification
doors.
preequalizer,
frequency
power
W
protection
the 5/0.5
lilter with
circuits.
of noise
to install
sound-proof
of its characteristics
suitable
for
operation
system carries
back the corresponding
the transmitter
control
damage to
knobs
bay.
and sliders
cannot
power
grid
the
and front. Meters
1
and
Recom-
MHz).
pAL
or
SECAM
and 2026
are located
in an
the 150/'15 W
exciter converter
circuits.
kW
associated
room.
with FM
amplifier
pA
and the
the
air cooling
makes
with
together
power
on unattended
commands
is switched
the transmitter
that
may
endanger
grid
mm
the
to
by
2
on
Page 4
The
transmitter
quired operating in
meters are
where necessary. Visual indicators and lamps indicate deviations
stage.
The checked equalizer video control instruments
for constant supervision and
the instrument
quality
directional couplers
for lF and RF test equipment.
containing
d3modulator
lV. Principles
contains all monitoring instruments re-
measurements ol the
voltages and currents. ln addition to meters
panel
provided
from normal
of the
at various
has well decoupled
a video-tracer, video oscilloscope, and
can also be supplied on
across the top of the transmitter,
on the
operation
picture
points.
panel
front
of individual
and faults in each
and sound signals can
For example the video
75
ohm outputs to
can be connected. A number of
with 50 ohm outputs are
A
separate control bay
request.
which
provided
of operation
units
be
pre-
Nyquist
(fis.3)
1
50/1
The signed therefore
be continued to any other
mitter monitoring bay. A remote-controlled change-over
switch
the two The subsequent video
video
the
work to compensate for differential
amplifier stages.
lunctions of levelling, white level clamping, indication of excessive
response
The exciter supplies a standard 38.9 MHz lF sinewave
for the for the converter at a lrequency obtained by adding the
channel frequency tc to the intermediate frequency frF. As the frequency irequency transmltter
2
picture/sound
5 W
video inputs
two
as coaxial insertion filters. The incoming video line
does not
connects the video
program
signal.
at
video and
errors
output.
white
the
upper
terminate
lines.
lt
contains an adjustable correction net-
The video
level and correction of the frequency
sound
frF
is substracted again in the converters.
of the
stage
picture
of the
in the transmitter but can
points
preequalizer
preoqualizer
preequalizer
end of the
modulators,
lF
oscillator cancel out
transmitter are de-
such as the
equalizes and
phase
video
picture
input to one
power
in
the
atso assumes the
frequency band.
and an RF sinewave
at
the
trans-
of
prepares
The channel
quartz
a
oven. sible tolerance correction.
ln the modulator the standard
modulated
The blanking
is
such
practically modulator stage also acts as vestigial
This
is
the vestigial sideband
of equalizing
the vestigial sideband filter and delay equalizer can
switched out of the signal
measured separately. The modulator also
equalizing circuit to correct in the subsequent
picture
The modulator.
clipping but
picture
The
to the
channel frequency and amplified signal drives
150i 15 W
frequency is obtained
crystal oscillator in a thermostatically controlled
The
oscillator
(negative
with
that
unaffected. A band-pass filter following
followed by a
and sound signals are
They
before
and
frequency converter where
peak
frequency remains within
over many months without requiring
lF
modulation) with the video
level
determines the level clamping, and
color transmission the color burst remains
equalizing
delay
than video frequency
RF
are combined after vestigial
the
sound
the RF
penultimate
sync across 50
provides
range
path
for
power
linearity
lF
amplitude non-linearity
amplifier stages.
signal from the modulator
The FM exciter contains an oscillator
modulated by the
and AF amplifier. An AFC circuit keeps quency
a
standard, the
The lF
is fed to the
With
large
the
of the
safety
signal
control unit
locally or remotely. The unit
the switch-on sequence and to transmitter under fault conditions. stored in a
Contactless
unit
memory unaffected
assure maximum
to
studio signal from a two
FM
signal within
margin. ln
frequency
at the
modulator
logic
circuits are used
accordance with the CCIR
modulator
output oI the frequency modulator
for combined
the transmitter can
contains circuits
operational reliability.
by
multiplication from
by
the admis-
of 38.9 MHz is amplitude
sideband
filter.
circuit which in
possibilities
better
equalization.
from the front
contains a turther
also combined in the
correction circuit.
it is converted
Both
panel
sideband
to the
to about 3/0.3 W. This
amplifier
ohm.
(YL
1056)
that is frequency
stage
the center fre-
the usual tolerances
operates at 33.4 MHz.
amplification.
be controlled
to control
prevent
damage to
The fault causes power
failures.
throughout the control
signal.
the
be
and
is fed
to
regulator
by
the
are
Page 5
v.
5/O.5 kW
The 5/o.5
combined
{ier
operating
An
adjacent channel Iilter
at the output
tion
picture/sound
kw
picture/sound
products
pA
in class A/8.
of 5/0.5 kW PA
fitted wirh
amplification is
tunable
stage
the
tetrode Rs
throughout band lll
attenuates
plcture-
f
picture
zo22
cL tot
a straight ampli- These undesired
intermodula-
the
f
much lower
5.5MHz,
+110
than
picture
f
MHz and
intermodulation
the admissible levels.
picture
f
MHz,
-11
+16
MHz'
products
are
therefore
V. Electrical
General
Rated output Ratio
Frequency
Video Color subcarrier
Color system
Frequency Maximum
Sound frequency
Cooling
v
Admissible room to meet
Maximum
Running-in
picture
of
range
Transmitter
frequency modulation
deviation with
frequency
ambient temperature
admissible humidity
time
Data forCC|R
power,
tuning range
specified
single
and double transmitter
to
sound output
frequency
'100%
deviation
modulation
performance
power
bandwidth
of vision channel 0lo 5 MHz
drive
bandwidth
range in transmitter
in transmitter room
Standard
5/0.5 kW
10 : 1
174 to 23O M
4.43
MHz
NTSC,
]
30 to 15,000 Hz
+
+15
90% at max.
30 minutes
+
50 kHz 70 kHz
5 to
PAL
+45'C
+45
to
(channels
Hz
or SECAM
for
b/w operatio
"C
for color
'C
+26
G
5 to 1 2)
operation
Page 6
Y,
Output
Rated
Picture transmitter
Sound
power
output
transmitter
power
and
powsr
(Peak pulse
consumption
power)
Mains input')
Power input including blowers
rated
power,
power.
with
5/0.5
5/0.5
with 5/0.5 kW rated
a)
b)
picture
white with 5/0.5 kw
picture
black
without lift
c) Operating transmitter
standby
black
Phase current Fuses
transmitter with
picture
(fast
without lift
trip)
Blowsrs
a) lnlet air
Exhaust air
b)
kW
into the antenna,
kW
into dummy
load,
Single transmitter
>5kw
> 0.5 kw
3x380/22oV
+5%
50 Hz
approx. 23
p
cos
ä
approx. 26 kVA
p
cos
ä
max. 45 A
3x634
4.0 kw
0.37 kw
x3%
kVA
0.95
0.95
Double
transmitter
>5kw
> 0.5 kw
3x38O/22QY
+5%
50 Hz
]
2
ä
kVA
0.95
0.95
kVA
0.95
kW
kW
approx. 23 cos
9
approx. 26 kVA
<p
cos
approx. 52
<p
cos
max. 90 A
(3x634)
2x
x4.0
2
x0.37
2
+3o/o
\,
Mains voltage regulator
') For larger mains voltage
4
fluctuations a mains voltage
kVA
3x10
regulator is required.
(3x10
lx
alternativ:
x
(f,x20
I
kVA) kVA)
\,
Page 7
Picture
transm itter
.y
Output
Terminations
Class
Type
lntermediate
Carrier
power,
measured
Transmitter Admissible
of emission
Negative-going
partial
at
diplexer output
output
VSWR
amplitude
suppression
of lower
of modulation
frequency
Oscillator frequency
f requency
Carrier frequency
Oscillator trequency
generation
generation
(Carrier
=
range
modulation
sideband
frequency
with
+
lF)
-
lF
Multiplication x
Pulling range
Setting accuracy
Maximum
after 30 min. after
1 month
of carrier
deviation
uninterrupted
with oscillator
frequency
of carrier
of carrier
frequency
frequency from
operation
crystal
ovens switched on <
set
value
>
kW
5
50 Q unbalanced
(:
1.'1
AsC
Frequency
intermediate frequency
38.9 M Hz
approx.
approx.
better than
5
a.
9.6 to 1 2.8 M
18
+500
+1SO
26
=
modulation
+4
kHz
+50
Hz
Hz
dB)
Hz
at
Hz
J
lnput for
Number
for frequencies
Level
external
lnput impedance
lnput
frequency
Cross
talk
attenuation
Return Rated Remote
lnput
Return loss
when
Peak-peak Cross,talk
loss
of external input
input
voltage
changeover
of video inputs
impedance
of VF input
terminated
VF input
altenuation
clampinq,
switch
Keyed
unkeyed
Level
stability
Peak voltage Peak voltage
black to white
Blanking
White
level with
(sync pulse)
variation
level
exciter
:
(fc
carrier
of the input
internal/external
for frequencies
with 75
up to 5 MHz
0
voltage
between
-selected
when
for composite color
changing from
picture
with
standard input
standard
input
frequency)
out of circuit >
up to 5 MHz
the two video inputs
signal
signal
signal
1
50 O
t./A
80 dB
> 20
dB
+10%
1 V._s
Floating
2
jb
>
0.7 to
>
Clamping impairing
sync
10oyo
contact
A
34 dB
1.3
56 dB
level
< 0.S d B
+Oyo,
75% 10 to 12.5%
(60
positive
V
ot blanking
color
sync signal
clamping
4%
V,
level
0.2 A)
without
White level
Attenuation
exceeding
Operate uncertainly Operate level
Envelope
Deviation
f
=0to4.5MHz
f
- 4.8 MHz
') The
consideration.
clipping
of
clipping level
delay response
lrom
reduced
quality
signal components
a constant
(can
be switched
of certain
off)
above 4.b fvl
for
transmission functions
Hz
< 0.5 dB
+1yo
<
adjustable in
<+
SO ns
a
rtOO
dependent on
the
ns
the VSWR
range
O
to 2'o/o
of the load must
be taken into
Page 8
Linearity
Linearity measure
of modulation
slope
picture
white
lrequency across
measured with constant modulation
ratio
m =
characteristic between
transmitter
of
and Nyquist demodulator
Forf=0to4MHz
when modulating
'12
75%
to
10 to 75% without white clipper
For color
wirh white clipper or
subcarrier
when modulating
12 to 87 .5o/o with white clipper or 10
to 87.5% without white clipper
changes from
signal
frequency 4.43 MHz
signal changes
minimum
from
to maximum
black and
>
>
J
0.9
0.9
D
ifferential
phase
for color subcarrier frequency 4.43 MHz when modulating
12 to 87.s%o with white clipper or 10 to 87.5% without white clipper
signal changes
from
Amplitude/frequency response
Sideband spectrum
ot
picture
transmitter
including diplexer
Frequency response measured across
transmitter
including diplexer and Nyquist demodulator
assuming frequency response oJ Nyquist demodulator
as
shown
-
Build
(measured
Low frequencies
Tilt
changes
H igh frequencies
Build-up
measured at Nyquist
signal changes from 55 to 75%
Spurious output
N oise
Random noise voltage level
5 MHz referred to black white step 1O/75o/.
Hum
Level of hum voltage up to 1 kHz referred
in tig. 1 -3 Fig.'l
up transient
across transmitler
and Nyquist
demodulator)
of 50 Hz square wave when modulating signal
from 10
transient of a
to 75%
250 kHz
demodulator
square
wave
when modulating
between
10 kHz and
to black-white srep 10175%
6
+3'
<
1-1
Fig.
+2o/o
4
Fig. 1-4
56 dB
=
43 dB
>
-2
rms
peak
rating
rating
\a
v
Page 9
.1,
lntercarrier
(measured Nyquist
referred
with
Spurious
Harmonics
Combination
Sound transmitter
Output
measured
Termination
Output
Admissible
Class
of emission
Frequency
Tvoe
. r
v
of modulation
Sound carrier lF
carrier frequency
Oscillator lrequency Regulating Spacing held
Auxiliary
Same auxiliary
transmitter:
(picture
Maximum
set value within Center frequency
+50
up to
Frequency
with 100%
maximum maximum
AF input
lnput
inlerference ratio
across
transmitter,
demodulator)
kHz
to 30
a modulating
emissions
power
at
VSWR
deviation
frequency
signals
diplexer output
produced
modulation
intermediate frequency
generation
circuit
between
constant at 5.5 MHz
carrier f requency
carrier fiequency
deviation
with Phase
picture
generation
carrier used
Carrier frequency
of sound carrier
one month
shift with
kHz
deviation
deviation
TV signal
deviation
shift from
set
value
impedance
diplexer and
of sound transmittel
of 500 Hz >
by transmitter < 1
discriminator.
and sound
(standard
as in
+
picture
(transmitter
modulation
carriers
B)
picture
=
lF)
-
frequency from
run
sound
in)
lF
within I month <
dB
38
<
1 mW
pW
>
0.5 kw
50 Q unbalanced
1.3: 1(+
F3
a.
^,
lF modulation
MHz
33.4
MHz
33.4
<
1,000 Hz
none
a50
kHz
+75
kHz
+5oÄ
>
2000 O balanced
(if
O
600
desired)
18dB)
(F3)
to
ground
Page 10
Control range
(manual
and
Control steps 2x10dB
AF frequency response
(referred
control
+50
kHz
to 1,000 Hz) between 40 and 15,000 Hz
AF input voltage
of
on site)
{or
deviation
both
+30
kHz
4 to
=
Distortion factor
referred to 50 kHz
Amplitude/f requency response
between 40 and
without with
of 50;rs
Spurious modulation
(referred
FM
unweig hted voltage
referred to
FM weighted
(through
referred to
nweighted
AM u
referred to 100% AM > 48
AM
synchronous voltage
referred to 100% AM
Spu rious emission
between
preemphasis
preemphasis
+30
ear
+30
Hz)
kHz
voltage
lilter in
kHz
to 500
an
Harmonics
Out-of-band combination
40
and 15.000 Hz
deviation
'15,000
Hz
corresponding to a time constant
deviation
accordance with CCIR
deviation
voltage
signals
<
level
+1
>
1949)
>
>
51
3 1
+0.5
1o/"
+0.5
dB
50 dB
60
dB
dB
54
dB
mW
prW
+8
dB
dBm (coarse)
dB
/20x0.5d8
(fine)
'1
points
Test
R F
points
test
Measuring head
Directional couplers for
RF output vollage
Output impedance
Directiviry
lF
VF
points
test
lF
output voltage
Output impedance
points
test
(switched
Output voltage
Output impeda nce
)
forward and reflecled
of coupler
loops
power
at output frequency converter
(150/15
Output of
output of LV
1 V,,,,"
50 O
>
34 dB
Output modulator Output equalizer
250 mV.-"+1/-4 50 O
O utput white clipper
or
output VF
(color
1 V
LV 1
(5/0,5
2
precorrector
composite signal)
peak-peak
amplifier
W)
kW)
dB
75o-
Page 11
Sideband
0
-4
l
9ag
-8
-12
16
20
-24
-54
-'1
Fig. 1
Overall amplitude picture
spectrum
transmitter
picture
of
123456
-
characteristic
+
nyquist
demodulator*)
transmitter
it
[MHz]
Al
[MHz]
<
-1.25
+3
+5
_4.43
,1
.25
to-0-75
-0.75
-0.5
_0.25
0
+1
,s
+4.5
to
+5
+5.5
to
+5.5
>
high low
Limit
[dB]
_JU
-20
+0.5
+0.5
-4
+0.5 +0.5 +0.5
Ref value
+0.5 +0.5
+0.5
_2Q
-0.5
0.5
-
-1,0
-2.5
1.0
.w
v
_0
{
-10
.0ö
Fig.
-2
1
Amplitude
with
switched
100
t
50
-2
Fis.
1-3
Buildup
sudden
transient
changes from
J456
characteristic
on sound
-1
012
piclure
oJ
55%
1
\
J,.
[MHz]
-
of nyquist
trap
J4
*
f,er
transmitter
75%
to
demodulator
[MHr]
+
nyquist demodulator
peak
of
the
voltage
RF+ZF
and vice
with
versa
Frequency
MHz
0to1.5
1.5 J
4
4.43
5
>
5.5
f..'
MHz
<
-1.65
-1.65
-1.35
-1
-0.5
0
+0.5
+1
+1.4 +1.5
+'l
.6
+2.5 +3.5 +4.43
Limit
dB
+1
/-1
Ref value
+1 +1
+'l
+1
/-1
/-2
/
-1
/
-28.5
.5
.5
A-t
low
l./"1
high
Limit
02 0 0 0
15 48 75
0.8
0.8
8.5
25 52
85
91.5 101.5 95 105
Ref value
95 95 80
105 105
95
7163
')
Transm.
with receiver
precorreclion
and with sound
trap
Time
+
[400
+
[400
Ins]
+75
+100
+200
to 1000]
to 1
000]
Limits
_10
+11
+7 +5
+3
for
[%]
smear
Page 12
F
TT
Exciler Culoul
preequali2er
Video
Modulalor
Converter
Iree
Conlrolpanel
tr
I ]Ttrtr
:E
panel
.Fl
Measuring pane
5/0.5
PA2
\\
685
Page 13
.9
E
=
=
I
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Page 14
Vl.Scope
Delivery
of
\,
Designations,
Designation
Band lll
TV Transmitter
Cabinet I :
Picture/sound
compnsrng:
1 lnstrument
sizes
5/0,5 kW
and
weight
driver 685x1'72x2026 Pictur€/sound
panel
l Exciter
preequalizer
1 VF
1 Picture modulator
1 Picture/sound converter
Control
1
1 Measuring 1 Cutout
'I
Power
(cavity)
1 Power
1 3-phase transformer
Directional
3
4 Diode
panel
panel
panel
amplifier
YL 1056
supply 3
couplers
probes
Dimensions
Designation
BxDxH(mm)
Weight
x
2Q55
about
1O72x2026
1400 kg
Cabinet 2:
amplif ier 5/0.5 kW
:
panel
panel
panel
685x120x181 1
x
375
x375 x x488 x
x
133 1 Cutout 133 1 Measuring 133 1 Filter
483 483 483
comPrising
lnstrument
483x448x88 1 Power amplifier
483x448x133 230x70x90
x242x
226
43O 1 Power supply 1
230x230x750
x
420
34O
x
280
x225 x287
860 1 3-phase transformer
(cavity)
1 Filament 1 Power supply 2
1 Recti{ier unit
1 Ouadruple directional
Diode
1 1 lndication amplifiel
RS 2022
power
probe
Dimensions
BxDxH(mm)
pow€r
685x1972x2026
685x120x181
365x120x118
195 x 120
x260
315x290x940
35Ox270x117O
C
supply 620x150x470
460x280x870
460 x 280 575 x 255
coupler
x870
x
\-
665
't2
Page 15
Offices
o-1OOO
Schöneberger
Posla
D
lO0O Ber n 11. Pöstiach
Iel
D-2800
Conüe..iröF 7,
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Tel.
Telex 2 45 451
D-4600 Dorthund
Märk
Postiach
Tel.54a-l
Ielexg)2312
of Siemens
Berlin
61
Straße 2.4
adress
2 55 1. Telex 1
Bremen t
3 46 l
sche Straße
658
Aktiengesellschaft
D-4OOO Düsseldort
Te
766
83
1
14
I
3030-1
Te e!
8 581 30r
D-4300 Essen
Te.2013
D-6000
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Frankfun
262 1
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{Main)
in the Federal
O-2OOO Hamburg
Ie 2A2 1
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D-3OOO
H6nnover 1
Tel
199 I
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9 22 333
1
D 5000 Köln
Te
5 76-1
Te
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Republic of
1
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Germany
o'6400 Mannheim
N
7.ta
Tel
296 l
Telex 4 62 D-aOOo
Rrchärd
D 8000 München
Iel
9221 1
and Berlin
261
München
Str.!ss Straße
80
2
1
(West)
D-4500 N0rnberg
Von
Tel
Ietex
D-6600
76
Mad n Luther
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O 7O0O Stultgart
Geschwisler Schö Straße
Tel. 20 76 I
Tann
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654 1
622251
Saarbrricken
30 08 l
1
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Straße ?5
1
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24
Siemens
Companies
Europe
Siemens Aktiengesellsch6fl
(A-1031
W en, Postfach
Tel.72
93 O, Telex 11a66
Siemens
Sooele Anonyme
Chaussee
de Chanero 1 16
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Tel.
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sweden
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Page 16
SIEMENS
SIEMENS AKTI ENGESELLSCHAFT
ae$e Nr B 35rl28A 101
n Wesr Germany
Pr nted
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