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INFRA-RED TECHNOLOGY

The SZI 1029 is a high power infra-red radiator. In a cordless infra-red
sound transmission system it transforms the electrical signal delivered
by an infra-red modulator or by an audio source into invisible infra-red
light  and  radiates  this  IR  light  into  a  room.  In  contrast  to  radio
transmission infra-red transmission is limited to the room, thus other
systems can be operated in neighbouring rooms without interference.

P

The high-power radiator SZI 1029 is switched on by the IR carrier
signal  that is produced by the modulator. Commercially available
50 

 coaxial cables with BNC connectors are used for feeding

sig nals from the modulator to the SZI 1029 radiator.

The infra-red radiator diodes in the high power radiator respond to the
received  signals  and  radiate  modulated  infra-red  light.  Depending  on
the  model  the  radiator  delivers  a  radiating  power  of  5  or  10  W
(

see

 

AVAILABLE MODELS

).

WIDEBAND

Infra-red wideband transmission systems are chiefly used for transmitting
audio signals in hi-fi quality.

The  two  available  wideband  channels  (2.3  MHz  and  2.8  MHz)  are
internationally standardized and are either used for two mono channels
or for stereo transmission.

NARROW-BAND

Infra-red narrow-band transmission systems allow the transmission of
up to 32 mono channels with a slightly reduced audio frequency response.
They are ideal for multi-channel interpretation systems and multilingual
information systems.

AREAS OF APPLICATION

P

Conference and simultaneous interpretation systems

P

High quality cordless sound transmission in recording studios
or  for hi-fi systems

IMPACT OF CURTAINS,

    Dark  and  heavy  materials,  curtains,  carpets,  panellings,  and  wall

 CARPETS, AND PAINTS

      coverings  tend  to  absorb  the  light,  a  good  reception  can  only  be
     achieved in direct line of sight of the infra-red radiator.

   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  windows  are

     highly reflective and are thus favourable for the propagation of in
     fra-red light.

   Different wall paints may reflect infra-red light differently although

      they have the same colour. This is due to the type and thecomposit-
      ion of the paint pigmentation.

The power which is necessary to irradiate a room varies accordingly.

IR-Licht

Reflexion

IR-Licht

Reflexion

IR-Licht

Reflexion

IR light

IR light

IR light

Reflection

Reflection

Reflection

PROPAGATION OF

The propagation of the infra-red signal radiated by the SZI 1029 can be

 INFRA-RED LIGHt

compared to the propagation of normal daylight or artifical (lamp) light.
Thus  it  is  subject  to  similar  conditions  when  it  falls  onto  different
materials:

Содержание SZI 1029-10-120

Страница 1: ...wer during multi channel operation 30 Computing the radiating power 31 Propagation of infra red light 31 Putting the radiator into operation 32 Mains connection 32 Connecting an IR radiator 33 Single Multi channel operation 33 Cancellation with greater cable lengths 34 Malfunction indicator 35 Operation indicator 35 Distance between radiators and receivers 35 Installation 35 Suitable modulators 36...

Страница 2: ...fra red radia ting power 5 W single channel MONO or multi channel MUlTI operation BNC output socket for connection of additional SZI 1029 or SZI 1015 radiators Black housing Supplied with a European mains cable SZI 1029 EU W As SZI 1029 EU but white with unpainted aluminium housing SZI 1029 120 As SZI 1029 EU but supplied with a USA mains cable SZI 1029 UK As SZI 1029 EU but supplied with a UK mai...

Страница 3: ...malfunction indicator Selector switch for single channel MONO multi channel MULTI operation BNC infra red input socket BNC output socket for connecting further radiators Thread for mounting the radiator IEC mains connector 24 V DC input socket only with 1029 24 model CONNECTING SEVERAL RADIATORS WIDEBAND AND NARROW BAND TRANSMISSION SINGLE CHANNEL AND MULTI CHANNEL Starting with an infra red modul...

Страница 4: ... up to 32 mono channels with a slightly reduced audio frequency response They are ideal for multi channel interpretation systems and multilingual information systems AREAS OF APPLICATION P Conference and simultaneous interpretation systems P High quality cordless sound transmission in recording studios or for hi fi systems IMPACT OF CURTAINS Dark and heavy materials curtains carpets panellings and...

Страница 5: ... channel surface area in sq m x number of channels 1300 COMPUTING THE During single channel operation switch set to MONO every RADIATING POWER SZI 1029 radiator will supply an area of about 1000 sq m The SZI 1029 10 radiators are able to supply approximately double this area When switched to narrow band multi channel operation switch set to MULTI power output and thus irradiated area are reduced b...

Страница 6: ...onnected to one another using a BNC coupler GZV 1019 A IR output BNC for extension radiators For permanentlyinstalledsystems you should use commercially available 50 Ω coaxial cables such as RG 58 75 Ω cables can be used if 50 Ω cables are unavailable If you want to use several SZI 1029 radiators you have to connect them in series This is done by connecting the output BNC socket of the first radia...

Страница 7: ...een one thus indicating that the device will have to be repaired OPERATION INDICATOR The indicators work as follows Red Indicator Only The radiator is connected to the mains but there is no IR signal present Green Indicator Only IR signal is present the radiator is working normally Red Green Indicator FAULT CONDITION 30 or more of the diodes are not working and the radiator should be returned to y...

Страница 8: ...t receiver additionally RI 250 RI 150 RI 300 RI 500 HDI 302 HDI 380 MZT 14 Mounting bolt For mounting goosenecks and swivel joints with 3 4 threads to table tops GZP 10 Mounting plate For wall and ceiling mounting GZG 1029 Swivel joint For mounting and aligning the radiator used in combination with mounting plate GZP 10 mounting bolt MZT 14 or a stand Interchangeable thread 1 4 3 8 MZT 100 Table s...

Страница 9: ...happen that some technical alterations are made on the described products after these operating instructions have gone to press We apologise for any inconvenience TECHNICAL SPECIFICATIONS SZI 1029 SZI 1029 10 Number of radiator diodes 144 288 Approximate radiating power 5 W 10 W Wavelength of radiated infra red light approx 880 nm Carrier frequency range 30 kHz 6 MHz IR input 50 mV 3 V approx 5 kΩ...

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