Sennheiser SZI 1015-T User manual

Type
User manual
Bedienungsanleitung
Instructions for use
Notice d‘emploi
Istruzioni per l‘uso
Instrucciones para el uso
Gebruiksaanwijzing
SZI 1015-T
TitelSeite.fm Seite 1 Mittwoch, 3. Dezember 2003 9:14 09
2
Bedienungsanleitung .................................................................................................................................... 3
Instructions for use..................................................................................................................................... 17
Notice d’emploi .......................................................................................................................................... 31
Istruzioni per l’uso...................................................................................................................................... 45
Instrucciones para el uso............................................................................................................................ 59
Gebruiksaanwijzing .................................................................................................................................... 73
18
Thank you for choosing Sennheiser!
We have designed this product to give you reliable operation over many years.
Please take a few moments to read these instructions carefully, as we want you to enjoy your new
Sennheiser product quickly and to the full.
Chap. SZI 1015-T Modulator/Radiator...................................................................................... Page
1 Short description ..................................................................................................... 19
2 Available models ..................................................................................................... 19
3 Sockets and controls................................................................................................ 20
4 Infra-red technology ................................................................................................ 21
5 Connecting the SZI 1015-T to the mains .............................................................. 24
6 Connecting the audio source .................................................................................. 24
7 Connecting additional radiators............................................................................. 24
8 Mounting the radiators ........................................................................................... 25
9 Suitable infra-red receivers ..................................................................................... 26
10 Accessories ............................................................................................................... 27
11 Technical data .......................................................................................................... 29
19
1 Short Description
SZI 1015-T Infra-red Modulator/Radiator
The SZI 1015-T is a powerful infra-red radiator with integrated modulator. Within a cordless IR
transmission system, it transforms the electrical signal of the audio source into invisible infra-red
light and radiates it into the room. In contrast to radio transmission systems, infra-red transmission
is restricted to the room, therefore, other systems can be used in neighbouring rooms without any
risk of interference.
2 Available Models
SZI 1015-T Infra-Red Modulator/Radiator
IR modulator/radiator with balanced XLR-3 audio input socket for direct connection to an audio
source. 2.3 MHz mono wideband transmission. RF output socket for connecting additional radiators,
e.g. SZI 1015. Power supply via external mains unit (e.g. NT 1015). Black housing.
SZI 1015-TW Infra-Red Modulator/Radiator
As SZI 1015-T, but white housing.
INPUT OUTPUT
20

3 Sockets and Controls
Audio (AF) input (XLR-3F)
RF output (BNC socket)
Thread for mounting
DC input terminal for connection of mains unit (NT 1015-EU or NT 1015-120)
DC output terminal for supplying additional SZI 1015 radiators
RF output terminal (in parallel with )
21
4 Infra-Red Technology
Infra-Red Transmission
The SZI 1015-T is a powerful infra-red radiator with integrated modulator. Within a cordless IR
transmission system, it transforms the electrical signal of the audio source into invisible infra-red
light and radiates it into the room. In contrast to radio transmission systems, infra-red transmission
is restricted to the room, therefore, other systems can be used in neighbouring rooms without any
risk of interference.
The SZI 1015-T modulator/radiator is switched on by the audio signal. Please use the balanced
XLR-3 input socket for connecting the SZI 1015-T to the audio source.
To connect additional SZI 1015 radiators, use 50 RG 58 co-axial cables with BNC connectors.
Alternatively, you can also use cables without connectors with the barrier strip (RF output terminal).
Wideband
Wideband transmission systems are used for transmitting high-quality audio.
Areas of Application
Any application which requires quality audio transmission, for example systems for the hard-
of-hearing in churches and theatres.
Propagation of Infra-Red Light
The propagation of the IR light emitted by the SZI 1015-T modulator/radiator is comparable to
that of normal daylight or artificial (lamp) light. Therefore, the infra-red light is subject to similar
conditions when it falls onto different surfaces and materials:
IR light
IR light IR light
Reflection
Reflection Reflection
22
Impact of Curtains, Carpets and Paints
Dark, heavy material, curtains, carpets, panellings and wall coverings tend to absorb IR light.
Good reception is only possible in direct line-of-sight.
Roughcast and strongly structured wallpapers (such as woodchip, embossed or fabric papers)
reflect the light unevenly but allow a more uniform propagation of the infra-red signal.
Smooth and bright walls, smooth tiled floors and mirrors are highly reflective and therefore
favour the propagation of infra-red light.
Different wall paints may reflect infra-red light differently although they have the same colour.
This is due to the type and composition of the paint pigmentation.
The power necessary to cover a given room varies accordingly.
Impact of Extraneous Light
Daylight and artificial light also have an impact on the IR reception. Their spectra contain infra-
red portions which may interfere with the useful signal of the SZI 1015-T. At worst, the reception
is disturbed by hissing noise.
Extraneous light
IR light
Extraneous light
IR light
23
77m
70m
63m
56m
49m
42m
35m
28m
21m
14m
7m
84m
91m
98m
105m
20˚
10˚
30˚
40˚
50˚
60˚
70˚
80˚
90˚
20˚
10˚
30˚
40˚
50˚
60˚
70˚
80˚
90˚
26dB
40dB
Polar Diagram & Area Covered
The SZI 1015-T modulator/radiator emits the infra-red light in a lobar shape. The IR intensity decreases
with the distance. When a receiver leaves the area covered by the radiator, transmission is interrupted.
Receivers without squelch will produce a hissing noise, receivers with squelch will mute.
INPUT OUTPUT
24
21
3
+
XLR-3

5 Connecting the SZI 1015-T to the mains
The SZI 1015-T is powered via an external mains unit (e.g. NT 1015). Connect the DC cable of
the mains unit to terminal (DC input) of the SZI 1015-T. First cut off the co-axial DC connector
and prepare the cable by stripping off a 10 mm length of the plastic covering. Twist the wires and
insert into the correct slots in the barrier strip. It is vital that correct polarity is maintained; the
ribbed cable is connected to negative () and the other to positive (+). The mains unit can
supply an additional SZI 1015 radiator via terminal (DC output).
6 Connecting the audio source
Connect the output of your audio source (for example a mixing console) to the XLR-3 audio input
socket of the SZI 1015-T. Please use a standard XLR-3 cable of the required length.
If you wish to connect the K6 microphone system directly to the SZI 1015-T, a small modification
is required to the input amplifier – please contact your local Sennheiser agent.
The SZI 1015-T modulator/radiator is switched on by the incoming audio signal. It will send an
RF carrier signal to any connected radiators to switch them on, too. If no audio signal is present,
all radiators will be switched off after about 10 minutes.
7 Connecting additional radiators
If you want to use additional radiators to increase coverage, they have to be daisy-chained. Connect
the RF output socket of your SZI 1015-T to the RF input socket of the following SZI 1015 or
SZI 1029 radiator. A maximum of 100 radiators can be connected in series. The total RF cable
length should not exceed 1,500 metres. Please also read the radiator manual.
Alternatively, you can use the barrier strip to connect additional radiators. Use co-axial cable
without connectors to link the RF output terminal of the SZI 1015-T to the RF input terminal
RF IN of the subsequent SZI 1015 radiator. For connection, remove approx. 20 mm of the cable
sheath and twist the braiding. Strip the neutral conductor by about 10 mm. The twisted braiding
is inserted into the earth terminal, the neutral conductor into the terminal on the right of the earth
terminal. An NT 1015 mains unit can supply one SZI 1015-T modulator/radiator plus one SZI 1015
slave radiator.
When the last radiator has been connected, the IR transmission system can be put into operation.
AF
25
SZI 1015-T SZI 1015
XLR-3F/XLR-3M cable
BNC/BNC cable (RG 58, 50 ):
GZL 1019 A1, -5, -10
Further SZI 1015 radiators
... Connect a 50
terminating impedance
to the BNC RF output
socket of the last radiator
.
Alternatively:
connection to
the barrier strip
Power supply cable
Please note:
The last radiator in an RF chain should be provided with a 50
terminating impedance to avoid standing waves in the RF cable.
8 Mounting the Radiators
Installation
Wherever possible, install the radiators such that they are orientated directly towards the infra-red
receivers. The easiest way to achieve this is to mount the radiators as high as possible with a slight
downward inclination. For uniform coverage, the radiators should be installed “decentralised”, for
example in the corners of the room.
Distance between Radiators and Receivers
Please observe a minimum distance of 2 m between radiators and receivers. Smaller distances
could overmodulate the receiver input stage, which would result in a very poor transmission
quality.
Connection cable
26
9 Suitable Infra-Red Receivers
RI 150 Wideband mono stethoset receiver
RI 250 Wideband mono stethoset receiver, audiology variant
RI 250 J Wideband mono stethoset receiver with 3.5 mm audio output socket
RI 250 S Wideband mono receiver without stethoset arms,
with 3.5 mm audio output socket
HDI 302 Wideband stereo/two-channel stethoset receiver
Stand Mounting
The SZI 1015-T modulator/radiator is provided with
a
5
/
8
” thread for mounting it e.g. to stands . An
adaptor to
3
/
8
” and
1
/
2
” threads is included.
Mount the SZI 1015-T in a vertical or almost vertical
position and guide its cables downwards. The vertical
position ensures sufficient cooling of the radiator
section, as the air can circulate through the cooling
fins at the sides of the SZI 1015-T.

27
10 Accessories
Attachments
GZP 10 Mounting Plate
For wall or ceiling mounting.
GZG 1029 Swivel Joint
For aligning radiators which have been mounted on stands or are used with the GZP 10 mounting
plate.
MZT 100 Table Stand
Used in combination with the GZG 1029 swivel joint for simply placing radiators on shelves or
cupboards.
MZS 1019 Mounting Bar
For mounting two radiators,
3
/
8
” internal thread.
SEMS 3134 Stand
3
/
8
” thread. Please weight the feet for stability.
28
...
Connection Cables
Audio Connection Cable
Use a standard XLR-3 cable to connect the SZI 1015-T to the audio source.
GZL 1019 A1 RF Connection Cable
For connecting an SZI 1015/SZI 1029 radiator to the SZI 1015-T. Length 1 m.
GZL 1019 A5 RF Connection Cable
For connecting an SZI 1015/SZI 1029 radiator to the SZI 1015-T. Length 5 m.
GZL 1019 A10 RF Connection Cable
For connecting an SZI 1015/SZI 1029 radiator to the SZI 1015-T. Length 10 m.
GZV 1019 BNC Coupler
For connecting two GZL 1019 A1, -5, -10 cables.
Additional Information
Sennheiser IR Planning Brochure (available from your local Sennheiser agent)
For more detailed information on Sennheiser infra-red systems please
refer to the “IR Planning Brochure – Practical Applications in Infra-
Red Technology”. It contains IR basics, information on how to plan an
infra-red transmission system, equipment overviews and many
application examples.
29
11 Technical Data
SZI 1015-T modulator/radiator
Number of IR diodes 66
Average radiating power 2 W
Wavelength of emitted IR light approx. 880 nm
Modulation wideband, FM
Carrier frequency 2.3 MHz
Audio (AF) input balanced XLR-3 socket
AF input voltage 50 mV–3.5 V
(optional for K6 microphone system: 3 mV–300 mV with 12 V phantom powering)
Nominal deviation ± 50 kHz
AF THD < 0.6 %
RF output BNC socket/barrier strip
Threshold voltage for automatic on/off function 50 mV
Automatic switch-off after about 10 minutes in the
absence of audio signal
Operating voltage 25–35 V DC
(e.g. from NT 1015 mains unit)
Current consumption operation: 0.75 A at 25 V
stand-by: max. 60 mA
Dimensions in mm approx. 250 x 100 x 80
Weight approx. 1.3 kg
Delivery inlcudes 1 SZI 1015-T modulator/radiator,
operating instructions
3 cable ties
The NT 1015 mains unit is not included in the delivery. Please order separately.
NT 1015 mains unit
Mains voltage 100–240 V AC
Output voltage 29 V DC, regulated
Output current 1.7 A, powers an
SZI 1015-T modulator/radiator
and an additional SZI 1015 radiator
Since we are continually trying to improve our products it may happen that some technical alterations
are made on the described products after these operating instructions have gone to press.
SZI 1015-T
59
INSTRUCCIONES PARA EL USO
Sennheiser electronic GmbH & Co. KG
30900 Wedemark, Germany
Phone +49 (5130) 600 0
Fax +49 (5130) 600 300
www.sennheiser.com
Printed in Germany Publ. 12/03 77448 / A02
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Sennheiser SZI 1015-T User manual

Type
User manual

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