APR lntegrus Singapore Technical

Security Systems LoB Communication

Slide 1 7.2.2003


Slide 2 7.2.2003

Introduction

Benchmarking & Competition

Benefits & Features

System Technology

Product Overview

Integrus Technical Training

I&O Manual

System Design & Set up


Slide 3 7.2.2003

Why a new Language Distribution System ?

Market survey shows: No interference from lighting

Lighting controls interfere with existing LDS Sound has to be HiFi CD-quality,

Existing LDS systems have S/N ratio 40dB Number of channels to be increased

NATO, EU uses 24 channels


Slide 4 7.2.2003

INTEGRUS

Integritas is Latin for: Correctness in language Pureness of the sound Undistorted signals Integrity of the system

The language of perfection !


Slide 5 7.2.2003

Introduction


Benefits & Features

System Technology

Product Overview


I&O Manual



Slide 6 7.2.2003

Perfect Reception

Synchronisation of nr. of Channels

IEC 61603 Standard Part 7

Coverage Checking Function

Improved Speech Intelligibility

Benefits & Features

I&O Manual

Language Distribution and More …


Slide 7 7.2.2003

Perfect Reception

Other LDS systems New Bosch Integrus system

Immunity to interference from lighting systems

HF gear Dimmers Lighting controls

Frequency band 2-8MHz Can even be used in

bright sunlight


Slide 8 7.2.2003

IEC 61603 Standard Part 7

New standard for digital infra language distribution systems Protocol and modulation technique :

- DQPSK modulated signal- Audio is APCM coded - Reed Solomon coder for error concealment

2 .3 3 3 3 3 .6 6 7 4 .3 3 3 5 5 .6 6 7 6 .3 3 3 7f (M H z )

-3 d B

G u a rd b a n d

Carrier Allocation

Per carrier:- 4 standard quality mono channels- 2 standard quality stereo channels- 2 premium quality mono channels- 1 premium quality stereo channel


Slide 9 7.2.2003

Great Improved Speech Intelligibility

Frequency response up to 20 kHz Premium quality 20kHz, Music

8 channels stereo 16 channels mono

Standard quality 10kHz, Speech 16 channels stereo 32 channels mono

Signal to noise ratio more than 80 dB !!!!! Existing LDS systems S/N ratio up to 40 dB

Built-in: ‘Bit error correction mode’ Superior digital audio quality


Slide 10 7.2.2003

Synchronisation of Nr. of Channels

System wide limitation of nr. of channels When the transmitter is configured for transmitting 6

channels, the receiver goes to channel 0 when up is pushed at channel 5

Prevents that the user selects unused channels Results in user friendly channel selection


Slide 11 7.2.2003

Ingenious Coverage Checking Function

To be used during installation / meeting

Each receivers can be switched to IR coverage mode

Digits in display will mention the quality of reception


Slide 12 7.2.2003

New Technology

Complies with the new IEC 61603-part 7, which is the new industry standard for digital infra-red transmission

Digital Transmission protocol Error correction by means of a Reed Solomon coder

inside


Slide 13 7.2.2003

Compatible with every Congress System

Can be connected to discussion systems like CCS 800 for small scale meetings

Easy interfacing with DCN to keep proceedings in the digital domain

Design of Concentus and Integrus are in line Or interface with every other brand of congress system

stand alone language distribution system


Slide 14 7.2.2003

Simultaneous Interpretation

Floor language

Interpretedlanguage


Slide 15 7.2.2003

Language Distribution


Slide 16 7.2.2003

Wireless Language Distribution and More…

Language distribution Non commercial Conference centers

UN, EU, WIPO, ASEAN ETC Commercial conference centers Universities Parliaments Courts

Multi track music distribution Factories Gyms Cinemas Hearing assistance


Slide 17 7.2.2003

Demonstration

Channel 0 DCN floor Standard Quality MonoChannel 1 English Standard Quality MonoChannel 2 Mandarin Standard Quality MonoChannel 3 Music Premium Quality StereoChannel 4 Music Standard Quality StereoChannel 5 Music Premium Quality MonoChannel 6 Music Standard Quality Mono


Slide 18 7.2.2003

Introduction


Benefits & Features

System Technology

Product Overview


I&O Manual



Slide 19 7.2.2003

Product Overview


Slide 20 7.2.2003

General system overview


Slide 21 7.2.2003

Transmitter

To be connected to conference systems: Conference systems, like DCN

Built-in mini infra-red radiator Radiator and system status indication Rotary push button Assign a unique name

per transmitter per audio channel

Automatic standby/on function with DCN


Slide 22 7.2.2003

Transmitter

Power on/off switch Stylish 19" (2U) housing

table top use rack mounting

Handgrips for easy transportation 19" rack mounting brackets included Headphone output CD-ROM with multi-lingual installation

and operating manual included Product Variants:

LBB 4502/04: 4-Channel LBB 4502/08: 8-Channel LBB 4502/16: 16-Channel LBB 4502/32: 32-Channel


Slide 23 7.2.2003

Infra-Red Transmitters front view

1. Mains on/off switch - Transmitter starts up and the display (3) will light-up.

2. Mini digital IR-radiator - Two infra-red LED’s, transmitting the same signal as the digital radiator outputs.

3. Menu display – A 2x16 character LCD-display gives information about the transmitter status and It is also used for the transmitter configuration.

4. Menu button – A turn-and-push button to operate the configuration software in combination with the display (3).

5. Monitoring headphone output – A 3.5 mm (0.14 in) jack socket to connect a headphone for monitoring purposes. This output can be controlled via the configuration software.

Headphone output : 32 Ohm to 2 kOhm


Slide 24 7.2.2003

Infra-Red Transmitter

1. Interface module slot2. Emergency switch connector3. Auxiliary audio line inputs 4. Audio signal line inputs5. Earth connection point 6. Input for slave mode7. Radiator signal outputs8. Mains input


Slide 25 7.2.2003

Connections to the Transmitter

DCN system

CCS 800 and 6-channel interpreter desks

External audio sources

Emergency signal switch

A transmitter in another room

Radiators


Slide 26 7.2.2003

Connecting the DCN system

The transmitter requires the DCN Interface Module

The connections between DCN unitsand the transmitter are made in a loop-through configuration.


Slide 27 7.2.2003

Integrus DCN Module

For interfacing with DCN Allows simultaneous

interpretation generated by DCN

LBB 3423/20


Slide 28 7.2.2003

Mounting the DCN Interface Module

Product: LBB 3423/20Integrus DCN Module


Slide 29 7.2.2003

Integrus

Channels 16 - 30

Channels 1 - 15

DCN system with 30 Channels + Floor

AIO modules

Channels 1 – 30 + Floor

Floor

4 x


Slide 30 7.2.2003

Connecting the CCS800 and Interpreter desks The transmitter requires the Symmetrical Audio

Input and Interpreters Module. Up to 12 6-Channels interpreter

desks can be loop-through connected to the module.

The floor signal for the interpreters desk is connected to the Aux-Left input of the transmitter.

The floor signal from a CCS 800 discussion system line output or from an external audio source, such as an audio mixer.


Slide 31 7.2.2003

For use with analogue audio systems with 8 symmetrical Inputs

Up to 12 6-Channels interpreter desks LBB 3222/0x

Automatic floor selection for unused interpretation channels

LBB 3422/20

Symmetrical Audio Input Module


Slide 32 7.2.2003

Symmetrical Audio Input Module LBB 3422/20

TT TT TT TT TT TT TT TT

T=optional (Beyer type TR/BV3)


Slide 33 7.2.2003

Floor audio connection from CPSU line output to Aux. input of infra-red transmitter

Settings on the Audio Input Module LBB 3422/10


Slide 34 7.2.2003

Maximum Up to 12 6-Channels interpreter desks can be loop-through connected to the module.

Maximum cable length to interpreters’ desks

35

2,9


Slide 35 7.2.2003

LBB 3422/10Symmetrical Audio

Input Module

LBB 3422/10Symmetrical Audio

Input Module

3,3uF/25V

1

14

4

18

2

16

5

17

7

19

8

22

6

20

11

23

9

21

3

15

24

25

12

13

10

Audio 1 input

Audio 2 input

Audio 3 input

Audio 4 input

Audio 5 input

Audio 6 input

Audio 7 input

Audio 8 input

Audio Comm

Audio AFSupply (+12V)

Supply (+12V)

1

14

4

18

2

16

5

17

7

19

8

22

6

20

11

23

9

21

3

15

24

25

12

13

10

OR Floor Channel

Channel 1

Channel 2

Channel 3

Channel 4

Channel 5

Channel 6

Busy in

Comm.

OR2 Auto RelaySupply (+27V)

Supply (+27V)Ground

Ground

FL. CH.1 CH.2 CH.3 CH.4 CH.5 CH.6

Earth

Interpreter‘s

Desk

Supply (- 12V)

Supply (- 12V)Earth

Interface connection to Recording System

To be made locallyTo be made locally

To recording systemTo recording system

LBB 3222/046-Channel

Interpreter’s Desk

LBB 3222/046-Channel

Interpreter’s Desk


Slide 36 7.2.2003

Connecting other external audio sources

The transmitter has audio inputs to interface with external asymmetrical audio sources.

The audio signals (stereo or mono) are connected to the audio input cinch connectors.

When the cinch audio inputs are used in combination with inputs via one of the interface modules, the signals on corresponding channels are mixed.


Slide 37 7.2.2003

To use the emergency signal function, a switch (normally-open) must be connected to the emergency switch connector.

When the switch is closed, the audio signal on the Aux-Right input is distributed to all output channels, overriding all other audio inputs.

The Aux. Input mode of the transmitter must be set to ‘Mono + Emergency’

Connecting an emergency signal switch


Slide 38 7.2.2003

Connecting to another transmitter

The transmitter can be operated in slave mode to loop-through the IR radiator signals from a master transmitter.

One of the four radiator outputsof the master transmitter is connected with an RG59 cable to the radiator signal loop-through input of the slave transmitter.

The Transmission mode of the slave transmitter must be set to ‘Slave’

M S


Slide 39 7.2.2003

Connecting radiators to transmitter The transmitter has four BNC connectors on

the rear panel. They can each drive up to 30 radiators in a loop-through configuration.

The radiators are connected with RG59 cables (75 Ohm).

The maximum cable length per output is 900 m.

Automatically cable termination by a built-in detection circuit.


Slide 40 7.2.2003

Connecting radiators to transmitter Notes:

Never leave an open-ended cable connected to the last radiator in a loop-through chain.

When connecting infra-red radiators, do not split the cable, else the system will not function correctly.


Slide 41 7.2.2003

2ASource and Volume

3C

Software Version

3B BoardVersion

3A BoardNumber

Defaults4O

Headphone on/off4N

Mini Radiator on/off4M

Unit Name4L

Sensitivity Inputs4K

Sensitivity Aux. Right4J

Sensitivity Aux. Left4 I

Aux. Input Mode4H

Carrier Overview4G

Carrier Settings4F

Channel Name4E

Language List4D

Channel Quality4C

Number of Channels4B

Transmitter menu structure

Transmission Mode4A

Setup 4

3Enquiry

2Monitoring

Fault Status 1

Transmitter Status 0

I&O Manual


Slide 42 7.2.2003

Radiator

Universal mains No fan - cooled by convection

silent operation no moving parts to wear out

LED indicators Auto switch on/off Brackets for mounting on ceiling and floor

stand included Adjustable radiator angle (steps of 15°) Cover plate

IRED’s protection easy to maintain and clean

Attractive and stylish design Product Variants:

LBB 4511/00: Medium-Power Radiator LBB 4512/00: High-Power Radiator


Slide 43 7.2.2003

Infra-Red Radiator


Slide 44 7.2.2003

Radiator

1. Mains2. BNC input connector

BNC signal loop-through connector auto termination

3. Half-power mode switch4. Delay compensation switches

Rear side


Slide 45 7.2.2003

Receiver Chip Recharging electronics integrated in chip 2-digit LCD display

battery status reception status

Auto mute/squelch Automatic and manual switch off Attractive and stylish design Operation time:

200 hours with disposable batteries (2 x AA) 75 hours with LBB 4550/00 NiMH battery pack

inside


Slide 46 7.2.2003

Receiver

Charging indicator LED 3.5 mm (0.14 in) stereo headphones jack Volume control slide adjuster Channel selection up/down buttons

Product variants: LBB 4540/04: 4-Channel Pocket Receiver LBB 4550/32: 32-Channel Pocket Receiver


Slide 47 7.2.2003

Receiver1. Charging indicator LED - Used in combination with the

charging equipment.

2. Headphone connector - A 3.5 mm stereo jack output socket, with integrated Stand- by/Off-switch.

3. LCD Display - A two digit display showing the selected channel. An antenna symbol is visible when the receiver picks up an infra red signal of adequate quality. A battery symbol is visible when the battery pack or the batteries are almost empty.

4. Volume control – to adjust the volume in steps of 3dB.

5. Channel selector - to select an audio channel.

6. On/Off button - When a headphone is connected, the receiver switches to Stand-by. Pressing the On/Off button the receiver switched to On. To switch back to Stand-by, press and hold the button for approx. 2 seconds. When the headphone is removed, the receiver switches automatically to the Off-state.


Slide 48 7.2.2003

Receiver

7. Battery pack connector - This connection is used to connect the battery pack to the receiver. Charging is automatically disabled when this connector is not used.

8. Charging contacts - Used in combination with the charging equipment to recharge the battery pack (if used).

9. Battery pack or disposable batteries - Either a rechargeable NiMH battery pack (LBB 4550/00) or two disposable AA- 24 size 1.5V batteries.


Slide 49 7.2.2003

Charging Indication


Slide 50 7.2.2003

LCD information during operating mode

Carrier detection symbol

Channel number 0-31

A battery status information symbol is visible on the display when the batteries or the battery pack is almost empty.

Operation time: up to 200 hours with disposable

alkaline batteries (2 x AA) up to 75 hours with NiMH

rechargeable battery pack (LBB 4550/00)

31


Slide 51 7.2.2003

LCD information in test mode

To be used during installation. Carrier detection symbol Each receivers can be switched

to Infra-Red coverage mode Digits in display will mention the

quality of reception

00


Slide 52 7.2.2003

Charging Suitcases Can accommodate 56 receivers Universal mains Rapid recharging within 1.45 hours Charging status indication on the receivers Product Variants:

LBB 4560/00: Charging Suitcase LBB 4560/50: Charging Cabinet

Accessories: LBB 4550/00: NiMH Battery Pack


Slide 53 7.2.2003

1. Mains input - Male Euro mains socket. The charging unit has automatic mains voltage selection 90-260V.

2. Mains on/off switch

3. Receiver positions - One charging unit can charge up to 56 receivers simultaneously.

Charging Units LBB 4560/00/50

LBB 4560/00/50

12

3


Slide 54 7.2.2003

HeadphonesLBB 3441/00 Under the chin

LBB 3442/00 Single earphone

LBB 3443/00 Stereo headphone

LBB 3015/04 Dynamic headphone


Slide 55 7.2.2003

Hands on

Transmitter menu Radiator indicators Test mode of the receiver Charging indicators


Slide 56 7.2.2003

Introduction


Benefits & Features

System Technology

Product Overview


I&O Manual



Slide 58 7.2.2003

Auditel (UK)

IRX Analogue Audio Complies with IEC 61603 part 3 8 channels Automatic switch off 85 – 300 hours operation Disposable or charging batteries Battery status check


Slide 59 7.2.2003

Brähler (Germany)

Infracom IRX Analogue Audio Complies with IEC 61603 part 3 Up to 32 channels 125 Hz - 8 kHz Max. 55 dB S/N ratio 75-200 hrs operation Anti-theft option


Slide 60 7.2.2003

Brähler (Germany)

Infracom Analogue Audio Complies with IEC 61603 part 3 Up to 16 channels 125 Hz - 8 kHz Max. 55 dB S/N ratio For use with headphones Automatic switch off Disposable or charging batteries


Slide 61 7.2.2003

DIS (Denmark)

IR-15 Analogue Audio Complies with IEC 61603 part 3 16 audio channels 30 Hz – 10 kHz For use with headphones Automatic switch off Disposable or charging batteries Their 30 W radiator performs

equal to our 12 W radiator


Slide 62 7.2.2003

PRO-SYS ICS (China)

RX-112 Analogue Audio Complies with IEC 61603 part 3 12 audio channels For use with headphones No charging facilities


Slide 63 7.2.2003

Sennheiser (Germany)

Infraport Analogue audio Complies with IEC 61603 part 3 8 or 16 channels 100 Hz - 8 kHz Max. 52 dB S/N ratio 60 g (incl. batteries) 10 hrs operation Ear-tips are not hygienic


Slide 64 7.2.2003

Sennheiser (Germany)

EKI 1029 Analogue Audio Complies with IEC 61603 part 3 4, 7, 12, 16 or 32 audio channels 100 Hz - 8 kHz Max. 52 dB S/N ratio 30 hrs operation For use with headphones Automatic switch off Battery pack only


Slide 65 7.2.2003

Sony (Japan)

SX 2130 Analogue Audio Time-sharing Pulse Position Modulation 13 channels 50 Hz - 5.5 kHz Max. 50 dB S/N ratio 22 hrs operation Rechargeable only


Slide 66 7.2.2003

Taiden (China)

HCS-826R Analogue Audio Time-sharing Pulse Position Modulation 6 and 12 channels 50 Hz - 10 kHz Max. 45 dB S/N ratio 60 hrs operation No charging facilities


Slide 67 7.2.2003

Williams Sound (USA)

WIR RX 12-4 Analogue Audio Wideband FM Modulation 2.3-3.8 MHz 4 channels 25 Hz - 16 kHz Max. 60 dB S/N ratio 30-60 hours operation Disposable batteries or rechargeable

batteries


Slide 68 7.2.2003

Bosch (the Netherlands)

Integrus LBB 4540/32: Digital audio Complies with IEC 61603 part 7 32 channels Mono and stereo channels Premium quality: 20Hz -20 KHz Signal to Noise ratio > 80 dB(A) No disturbance from lighting Can be used in bright sunlight Charging electronics integrated Disposable batteries or NiMH battery pack 75/200 hours operation System wide limitation of max. channels Flexible configuration of channel qualities Coverage checking function


Slide 69 7.2.2003

Introduction


Benefits & Features

System Technology

Product Overview


I&O Manual



Slide 70 7.2.2003

Infra-Red Radiation

Carriers and Channels

Signal Processing

Audio Encoding and Quality

Transmission Protocol

System Technology

I&O Manual


Slide 71 7.2.2003

Infra- Red spectrum in relation to other spectra100

75

50

25

0

%

400 500 600 700 800 870 900 1000 nm

1

Daylight spectrumDaylight spectrum1

2

Sensitivity of the human eyeSensitivity of the human eye2

3

Intra-Intra- Red radiatorRed radiator3

4

Sensitivity of the Infra-Sensitivity of the Infra- Red diode at the receiverRed diode at the receiver4

5

Sensitivity of the Infra-Sensitivity of the Infra- Red diode at the receiver with daylight filterRed diode at the receiver with daylight filter5


Slide 72 7.2.2003

Infra-Red Radiation


Signal Processing



System Technology

I&O Manual


Slide 73 7.2.2003

Signal Processing

The Integrus system uses high frequency carrier signals (typically 2-8 MHz) to prevent interference problems with modern light sources.

The transmission system converts analogue audio signals to digital frequency modulated infra-red light.

The digital audio processing guarantees a constant high audio quality.

Receivers pick up the digital frequency modulated infra-red signal and convert it back to an audio signal for a headphone.

AudioChannel 01

Protocol Creation& Modulation

Protocol Creation& Modulation

Carrier(to IR Radiator)

A/D Conversion& CompressionA/D Conversion& Compression

4x 4x

A/D Conversion& CompressionA/D Conversion& Compression

AudioChannel 04


Slide 74 7.2.2003

Infra-Red Radiation


Signal Processing



System Technology

I&O Manual


Slide 75 7.2.2003


Protocol and modulation technique :according to IEC 60603 part 7

Carrier structureEach carrier contains:

synchronization information audio slots data slot(s) A Reed-Solomon RS coder is applied to protect the audio and

data information for transmission error

2 .3 3 3 3 3 .6 6 7 4 .3 3 3 5 5 .6 6 7 6 .3 3 3 7f (M H z )

-3 d B

G u a rd b a n d

Carrier Allocation


Slide 76 7.2.2003


Audio slot A Audio slot B data RS paritySQ SQ

Audio slot A Audio slot B data RS paritySQ SQ

1 super frame

RS frame 0SYNC RS frame 1 RS frame 2 RS frame 3 RS frame 4 RS frame 5

With four Standard Quality channels


Slide 77 7.2.2003


Audio slot A Audio slot B data RS parityPQ

Audio slot A Audio slot B data RS parityPQ

With two Premium Quality channels

1 super frame

RS frame 0SYNC RS frame 1 RS frame 2 RS frame 3 RS frame 4 RS frame 5


Slide 78 7.2.2003

Infra-Red Radiation


Signal Processing



System Technology

I&O Manual


Slide 79 7.2.2003


This table lists all possible channel combinations per carrier:

20kHz (L) 20kHz (R)

Channel Quality

Mono SQ Mono PQ Stereo SQ Stereo PQ

10kHz (R)

20kHz 20kHz

10kHz

10kHz 10kHz 20kHz

10kHz 10kHz 10kHz

10kHz (R)

10kHz (R)

10kHz (L) 10kHz (L)10kHz (R)

10kHz 10kHz 10kHz (L)

20kHz 10kHz (L)

Carrier


Slide 80 7.2.2003

Infra-Red Radiation


Signal Processing



System Technology

I&O Manual


Slide 81 7.2.2003

Audio frequency response:

Standard Quality mode………………...: 20 Hz to 10 kHz (-3 dB)

Premium Quality…………….…………. : 20 Hz to 20 kHz (-3 dB)

Total harmonic distortion at 1kHz …: < 0.05 %

Crosstalk attenuation at 4 kHz….….: > 80 dB

Dynamic range……………………….. : > 80 dB

Weighted signal-to-noise ratio…….. : > 80 dB(A)



Slide 82 7.2.2003

Introduction


Benefits & Features

System Technology

Product Overview


I&O Manual



Slide 83 7.2.2003

Aspects to Consider

Testing the System

Planning an Infra-Red System

Case Study

Calculating Delay Switch Positions


I&O Manual


Slide 84 7.2.2003

Radiation Requirements

Ambient Lighting

The Sensitivity of the Receiver

The Footprint of the Radiator

Aspects to Consider

I&O Manual

Objects, Surfaces and Reflections

Overlapping Footprints and Multipath Effects


Slide 85 7.2.2003

All delegates have to receive the distributed signals without disturbance.

An Integrus receiver needs a minimum of 4 mW/m2 to work without errors. (resulting in a 80 dB S/N ratio for the audio channels).

Use enough radiators, placed at well planned positions, so that uniform IR-radiation covers whole area.

Radiation requirements


Slide 86 7.2.2003


Ambient Lighting



Aspects to Consider

I&O Manual




Slide 87 7.2.2003

The sensitivity of a receiver is at its best when it is aimed directly towards a radiator.

The axis of maximum sensitivity is tilted upwards at an angle of 45 degrees (see figure 1.5). Rotating the receiver will decrease the sensitivity. For rotations of less than +/- 45 degrees this effect is not large, but for larger rotations the sensitivity will decrease rapidly.



Slide 88 7.2.2003


Ambient Lighting



Aspects to Consider

I&O Manual




Slide 89 7.2.2003

The Footprint of a Radiator

This is the floor area in which the direct signal is strong enough to ensure proper reception, when the receiver is directed towards the radiator.

The size and position of the footprint depends on the:mounting heightmounting anglenumber of transmitted carriers


Slide 90 7.2.2003

Radiator Footprint = L x W

90 °90 °

Floor

0 50M20

0

45 °45 °

Floor

0 50M20

0

15 °15 °

Floor

0 50M20

0


Slide 91 7.2.2003

Total Coverage Area for One to Eight Carriers

Carriers


Slide 92 7.2.2003

Radiator Coverage Area

Polar diagram of the radiation pattern for 1, 2, 4 and 8 carriers

…..Meters


Slide 93 7.2.2003


Ambient Lighting



Aspects to Consider

I&O Manual




Slide 94 7.2.2003

The Integrus system is immune for the effect of ambient lighting.

Fluorescent lamps (with or without electronic ballast or dimming facility), such as TL lamps or energy saving lamps give no problems.

Ambient Lighting

Sunlight and artificial lighting with incandescent or halogen lamps up to 1000 lux give no problems.


Slide 95 7.2.2003


Ambient Lighting



Aspects to Consider

I&O Manual




Slide 96 7.2.2003

The presence of objects in a conference venue can influence the distribution of infra-red light.

The texture and colour of the objects, walls and ceilings also plays an important role.

Infra-red radiation is reflected from almost all surfaces. As is the case with visible light, smooth, bright or shiny surfaces reflect well.

Dark or rough surfaces absorb large proportions of the infra-red signal.

Objects, surfaces and reflections


Slide 97 7.2.2003


Ambient Lighting



Aspects to Consider

I&O Manual




Slide 98 7.2.2003

When the footprints of two radiators partly overlap, the total coverage area can be larger than the sum of the two separate footprints.

Overlapping Footprints and Multipath Effect


Slide 99 7.2.2003

However, differences in the delays of the signals picked up by the receiver from two or more radiators can result in that the signals cancel each other out (multi path effect).

Overlapping Footprints and Multipath Effect

In worst-case situations thiscan lead to a loss of reception at such positions (black spots).


Slide 100 7.2.2003

Cable Signal Delay Example

Cable lengths . Delay switch position

Radiator 1 = 35m 0Radiator 2 = 50m 0

R 2

Tra

nsm

itte

rT

ran

smit

ter

50m

R 1

Overlapping areawith Signal delaycaused Multipath(black spots) by use of differentcable lengths

Overlapping areawith Signal delaycaused Multipath(black spots) by use of differentcable lengths 10m

50m35m

Overlappingareas withoutSignal delayby use of thesame cable lengths


Tra

nsm

itte

rT

ran

smit

ter

R 1

50m 50m

R 210m

50m


Radiator 1 = 50m 0Radiator 2 = 50m 0


Slide 101 7.2.2003

Cable Signal Delay Differences

When radiators are loop-through connected, the cabling between each radiator and the transmitter should be as symmetrical as possible

The differences in cable signal delays can be compensated with the signal delay compensation switches on the radiators.


Slide 102 7.2.2003

Cable Signal Delay Example – not compensated

R 3 R 4

R 2

100m

R 1

TransmitterTransmitter

7m

7m100m100m

100m




Radiator 1 = 100m 0Radiator 2 = 100m 0Radiator 3 = 100m 0Radiator 4 = 100m 0

R 3 R 4

R 2 R 1

7m

7m


Radiator 1 = 20m 0 Radiator 2 = 27m 0Radiator 3 = 87m 0Radiator 4 = 94m 0

TransmitterTransmitter20m60m

Overlapping areas with Signal delaycaused Multipath (black spots) byuse of differentcable lengths



Slide 103 7.2.2003

R 3 R 4

R 2

20m

R 1


7m

7m60m


Radiator 1 = 20m 0Radiator 2 = 27m 0Radiator 3 = 87m 0Radiator 4 = 94m 0

Cable Signal Delay Example - compensatedDelay switch positions

Cable lengths . Delay switch position Radiator 1 = 20m 11Radiator 2 = 27m 10Radiator 3 = 87m 1Radiator 4 = 94m 0

R 3 R 4

R 2

20m

R 1


7m

7m60m

Overlappingareas withoutSignal delayby use of thedelay switches on the radiators

Overlappingareas withoutSignal delayby use of thedelay switches on the radiators



Calculation tool


Slide 104 7.2.2003

Radiation Signal Delay

A situation in which a radiation signal delay occurs.

Calculation tool


Slide 105 7.2.2003

Aspects to Consider

Testing the System


Case Study



I&O Manual


Slide 106 7.2.2003

General Guidelines

Planning the Cabling

Positioning of the Radiators

Planning the Radiator Lay-out


I&O Manual


Slide 107 7.2.2003

General Guidelines

Surface the area that has to be covered with infra-red signals. Use the correct footprints, therefore the following information must

be known: the ambient lighting conditions the number of carriers that will be used the type of radiators to be used the mounting place, height and angle of the radiators the receiver position in relation to the radiators

Extra radiators may be needed when: participants must also be able to receive infra-red signals when

'walking around‘. delegates seated on a podium listeners on the Balconies


Slide 108 7.2.2003

General Guidelines





I&O Manual


Slide 109 7.2.2003

Receivers pick up direct path infra-red radiation Reflections improve the signal reception and should therefore not be

minimised.

Positioning the Radiators

Combination of direct and reflected radiation

Combination of several reflected radiation


Slide 110 7.2.2003

Wrong Positioning of the Radiator


Slide 111 7.2.2003

Correctly Positioning of the Radiator


Slide 112 7.2.2003

Positioning the Radiators Covering seats in a square arrangement


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Positioning the Radiators A conference hall with auditorium seating and podium


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Positioning the Radiators Under balconies, you should cover the ‘shaded’ area with an

additional radiator


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General Guidelines





I&O Manual


Slide 116 7.2.2003

Rectangular Footprints

LBB 4512/00 with 1 Carrier in use, Mounting height 0 m, Angle 0o

FP Calculation

Footprint Calculation

-20

-15

-10

-5

0

5

10

15

20

-20 -15 -10 -5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70

X [m]

Y [

m]

RFPRFP

X= 9,5 M

L = 48 M

W = 27 M

RFP = 1296 M2

TFP = 2026 M2

X= 9,5 M

L = 48 M

W = 27 M

RFP = 1296 M2

TFP = 2026 M2

TFPTFPLL

WW

XX


Slide 117 7.2.2003

Rectangular Footprints

FP Calculation

Footprint Calculation

-20

-15

-10

-5

0

5

10

15

20

-20 -15 -10 -5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70

X [m]

Y [

m]

RFPRFP

X= -10 M

L = 20 M

W = 20 M

RFP = 400 M²

TFP = 617 M²

X= -10 M

L = 20 M

W = 20 M

RFP = 400 M²

TFP = 617 M²

TFPTFP

LBB 4512/00 with 1 Carrie in use, Mounting height 10 m, Angle 90o

XXLL

ww


Slide 118 7.2.2003

Rectangular Footprints The guaranteed rectangular footprints for various number of carriers.

I&O Manual


Slide 119 7.2.2003

Increased Coverage

For systems with up to 4 carriers and overlapping areas the distance between the radiators can be increased by a factor 1.4

1.4 W

L

W

1.4L


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General Guidelines





I&O Manual


Slide 121 7.2.2003


In order to minimize the risk of black spots, use equal cable length from transmitter to radiator if possible.

Planning the Radiator Cabling


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Symmetrical arrangement of radiator cabling (recommended)


Planning the Radiator cabling


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Asymmetrical arrangement of radiator cabling (to be avoided)


Planning the Radiator Cabling


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Aspects to Consider

Testing the System


Case Study



I&O Manual


Slide 125 7.2.2003

Signal delay calculation Setting the radiator delay compensation switches

Differences in cable length between the transmitter and the radiators can cause black spots as a result of the multipath effect.

The IR signal from a radiator with a long cable is delayed with respect to the signal from a radiator with a shorter cable.

To compensate these cable length differences, the delay of a radiator can be increased to make it equal to the signal delay of the other radiators.

This signal delay can be set with delay switches at the back of the radiator.


Slide 126 7.2.2003

Radiation Signal Delay

A situation in which a radiation signal delay occurs. For systems with more than four carriers, add one delay switch position per 10

meter difference in signal path length to the radiators which are closest to the overlapping coverage area.

In this Figure the signal path length difference is 12 meter. Add one delay switch position to the calculated switch position(s) for the radiator(s) under the balcony.

Calculation tool


Slide 127 7.2.2003

Signal delay calculation

Two ways for determining delay compensation switch positions of the radiator.

1. By measuring the cable lengths

1.1 Manual

1.2 delay switch calculation tool (recommended)

2. By using a delay measuring tool

2.1 Manual

2.2 delay switch calculation tool (recommended)


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Signal delay calculation 1.1 To determine the delay switch position based on cable lengths and calculating

manually follow the next steps:

1. Measure the lengths of the cables between the transmitter and each radiator.

2. Multiply these cable length differences with the cable signal delay per meter (the manufacturer specified factor). This is the cable signal delay difference for that radiator.

3. Determine the maximum signal delay.

4. Calculate for each radiator the signal delay difference with the maximum signal delay.

5. Divide the signal delay difference by 33. The rounded off figure is the signal delay switch position for that radiator.

6. Set the delay switches to the calculated switch positions.

Cable Measuring


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Signal delay calculation 1



Slide 130 7.2.2003

Signal delay calculation 1.2

To determine the delay switch position based on cable lengths and the delay

switch calculation tool follow the next steps:

1. Start the calculation tool

2. Select system type

3. Fill-in the cable signal delay per meter of the used cable. (specified by the cable manufacturer).

4. Fill-in the number of radiator(s) on each output

5. Fill-in the measured cable lengths of the cables between the transmitter and each radiator.

6. Set the delay switches on the radiator(s) to the automatically calculated switch positions.

Calculation tool


Slide 131 7.2.2003


To determine the delay switch position by delay measuring tool and calculating

manually follow the next steps:

1. Disconnect the cable from a radiator output of the transmitter and connect this to a delay measurement tool.

2. Disconnect the cable from the first radiator in that trunk.

3. Measure the impulse response time (in ns) of the cable(s) between that transmitter and the radiator.

4. Reconnect the cable to the radiator and repeat steps 2 to 4 for the other radiators (started by the next radiator in that trunk).

5. Reconnect the cable to the transmitter and repeat step 2 to 5 for the other radiator outputs of the transmitter.

6. Divide the impulse response times for each radiator by two. These are the cable signal delays for each radiator.


Slide 132 7.2.2003




9. Divide the signal delay difference by 33. The rounded off figure is the delay switch position for that radiator.

10. Set the delay switches to the calculated switch positions.

Delay Measuring


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563 ns 339 ns

584 ns 350 ns

237 ns


Slide 134 7.2.2003

Signal delay calculation 2.2 To determine the delay switch position by delay measuring tool and

the delay switch calculation tool the follow the next steps:

1. Start the calculation tool, Select system type, Fill-in the number of radiator(s) on each output

2. Disconnect the cable from a radiator output of the transmitter and connect this to a delay measurement tool.

3. Disconnect the cable from the first radiator in that trunk.

4. Measure the impulse response time (in ns) of the cable(s) between that transmitter and the radiator.

5. Enter this impulse response time in the calculation tool.

6. Reconnect the cable to the radiator and repeat steps 2 to 4 for the other radiators (started by the next radiator in that trunk).

Calculation tool


Slide 135 7.2.2003


7. Reconnect the cable to the transmitter and repeat step 2 to 5 for the other radiator outputs of the transmitter.

8. When the cable signal delays are known, the delay switch calculation tool will calculate the delay switch positions automatically.

Calculation tool


Slide 136 7.2.2003

Signal delay calculation with more transmitters

When radiators in one multi purpose room are connected to two transmitters, an extra signal delay is added by:

Transmission from master transmitter to slave transmitter (cable signal delay).

Transmission through the slave transmitter.

Calculation tool


Slide 137 7.2.2003


For calculating the delay switch positions for a system with a master-slave configuration, use the following procedure:

1. Calculate the cable signal delay for each radiator, using the procedures for a system with one transmitter.

2. Calculate the signal delay of the cable between the master and the slave transmitter in the same way as for cables between a transmitter and a radiator.

3. Add to the cable signal delay of the cable between the master and the slave, the delay of the slave transmitter itself: 33 ns. This gives the master-to-slave signal delay.

4. Add the master-to-slave signal delay to each radiator connected to the slave transmitter.


Calculation tool


Slide 138 7.2.2003



7. Divide the signal delay difference by 33. The rounded off figure is the signal delay switch position for that radiator.

8. Set the delay switches to the calculated delay switch positions.

Calculation tool


Slide 139 7.2.2003

Tx MasterTx Master

R1

R3

R4

R5

R6

R2

R8

R10 R7

R9

20m

20m20m30m

20m

30m

20m

30m

20m

30m


50m Tx SlaveTx Slave


Slide 140 7.2.2003



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Aspects to Consider

Testing the System


Case Study



I&O Manual


Slide 142 7.2.2003

Testing the reception quality An extensive reception quality test must be done to make sure that the

whole area is covered with IR radiation of adequate strength. Such a test can be done during installation and during the meeting:

Test during installation:

1. Check that all radiators are connected and powered up and that no loose cables are connected to a radiator. Switch the transmitter off and on. (needed for the auto signal equalisation)

2. Set the transmitter in the Test-mode. For each channel a different frequency test tone will be transmitted.

3. Set a receiver on the highest available channel and listen via the headphones to the transmitted test tone.

4. For testing all positions follow the instruction of chapter 1.6 of the Integrus ‘Installation and Operating Instructions’


Slide 143 7.2.2003

Testing the reception quality

Testing during the meeting:

1. Set a receiver in the Test-mode and select the highest available carrier. The quality of the received carrier signal is indicated on the display of the receiver.

The quality indication should be between 00 and 39 (good reception).

2. For testing all positions follow the instruction of chapter 1.6 of the Integrus ‘Installation and Operating Instructions’


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Aspects to Consider

Testing the System


Case Study



I&O Manual


Slide 145 7.2.2003

Case Study NATO Summit

Prague, November 2002 Total rental package Very successful !! 22 languages

DCN Integrus


Slide 146 7.2.2003

End of section System Design & Set up

© Robert Bosch GmbH reserves all rights even in the event of industrial

property rights. We reserve all rights of disposal such as copying and

passing on to third parties.


Slide 147 7.2.2003

Perfect reception Great improved speech intelligibility Easy channel selection Easy interfacing with DCN and other congress systems Ingenious coverage checking function Wireless language distribution and more…

Questions ?

Integrus is…….


Slide 148 7.2.2003

What about compatibility with IR Analog ? IR analog and Integrus system can be used simultaneously:

Each with its own transmitter, radiators and receivers

The analog radiators can be used in Integrus, but with limitations: Maximum 4 radiators, with equal cable length. Not more than 4 carriers (equals 16 channels max). Not more than 100 m cable per outlet.

DCN Interface Module can be used with Integrus: LBB 3423/00 version 01.04: no automatic max channel synchronisation LBB 3423/00 version 01.05: front panel has to be removed, fully compatible LBB 3423/20: fully compatible

Symmetrical Audio Input and Interpreters Module can be used with Integrus: LBB 3422/10: Resistor has to be removed, then fully compatible LBB 3423/20: fully compatible

The transmitters, charging suitcases and receivers are not compatible


Slide 149 7.2.2003

Documents

APR lntegrus Singapore Technical