Taiden HCS-5100 Installation And Operating Manual
HCS-5100 Digital Infrared Language Distribution System
Installation and Operating Manual
V 1.10
Simultaneous Interpretation System
I
Remark:
All rights reserved for translation, reprint or reproduction
Contents may change without prior announcement
All technical specifications are guideline data and no guaranteed features
We are not responsible for any damage caused by improper use of this manual
The equipment must be connected to earth!
This product conforms to the rules of the European directive 2004/108/EC.
To protect your hearing avoid high pressure level on earphones. Adjust to a lower and convenient level.
If any detailed information needed, please contact your local agent or TAIDEN service center in your region.
Any feedback, advice and suggestion about the products is appreciated
TAIDEN is the registered trademark of TAIDEN Co., Ltd.
II
Important Safety Instructions
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. The apparatus shall not be exposed to dripping or
splashing and that no objects filled with liquids, such as
vases, shall be placed on the apparatus.
6. The MAINS plug serving as a disconnection device,
should be easy to operate.
7. The apparatus should be connected to the MAINS
socket-outlet with protective earth.
8. Clean only with dry cloth.
9. Do not block any ventilation openings. Install in
accordance with the manufacturer’s instructions.
10. Do not install near any heat sources such as radiators,
heat registers, stoves, or other apparatus (including
amplifiers) that produce heat.
11. Do not defeat the safety purpose of the polarized or
grounding-type plug. A polarized plug has two blades
with one wider than the other. A grounding type plug
has two blades and a third grounding prong. The wide
blade and the third prong are provided for your safety. If
the provided plug does not fit into your outlet, consult
an electrician for replacement of the obsolete outlet.
12. Protect the power cord from being walked on or
pinched particularly at plugs, convenience receptacles,
and the point where they exit from the apparatus.
13. Only use attachments/accessories specified by the
manufacturer.
14. Use only with the cart, stand, tripod, bracket, or table
specified by the manufacturer, or sold with the
apparatus. When a cart is used, use caution when
moving the cart/apparatus combination to avoid injury
from tip-over.
15. Do not leave the battery near the fire or under an
environment over 60 ºC (such as under direct sunlight
in the car), otherwise it may damage the protection
circuit of the battery and cause fire, explosion, leakage
or heat generation.
16. Unplug this apparatus during lightning storms or when
unused for long periods of time.
17. Refer all servicing to qualified service personnel.
Servicing is required when the apparatus has been
damaged in any way, such as power-supply cord or
plug is damaged, liquid has been spilled or objects
have fallen into the apparatus, the apparatus has been
exposed to rain or moisture, does not operate normally,
or has been dropped.
18. Do not place the equipment on any uneven or unstable
stand; original product package or appropriate package
should be used to avoid damage caused by strong
impacts during transportation.
19. Power supply cords:
AC 100 V-120 V 60 Hz or AC 220 V-240 V 50 Hz
20. The quantity of connected transceivers in one system
should not exceed prescribed quantity. For service,
please contact the nearest TAIDEN Service Center.
21. All TAIDEN products are guaranteed for definite time
(see the WARRANTY CARD for details) excluding the
following cases:
A. All damage or malfunction caused by human
negligence;
B. Damage or malfunction caused by improper
operating by operator;
C. Parts damage or loss caused by disassembling
the product by non-authorized personnel.
22. Use ONLY specified connection cable to connect the
system equipment.
23. Upon receipt of the product, please fill out the Warranty
Card enclosed and post it to TAIDEN Service Center
nearby in your region.
24. It will result in low battery and may damage the battery
pack if the battery pack is not used for a long time.
Please fully charge the battery every three months.
CAUTION: To reduce the risk of electric shock,
DO NOT open covers, no useable serviceable
parts inside. Refer servicing to qualified service
personnel only.
CAUTION: DO NOT use alcohol, ammonia or
petroleum solvents or abrasive cleaners to
clean the devices.
III
Important Safety Instructions
The lightning flash with an arrowhead symbol, with
an equilateral triangle, is intended to alert the user
to the presence of uninsulated ‘dangerous voltage’
within the products enclosure that may be of
sufficient magnitude to constitute a risk of electric
shock to persons.
The exclamation mark within an equilateral triangle
is intended to alert the user to the presence of
important operating and maintenance (servicing)
instructions in the literature accompanying the
appliance.
Attention: Installation should be performed by
qualified service personnel only in accordance
with the National Electrical or applicable local
codes.
Power Disconnect: Units with or without ON – OFF
switch have power supplied to the unit whenever
the power cord is inserted into the power source;
however, the unit is operational only when the ON
– OFF switch is in the ON position. The power cord
is the main power disconnect for all units
WARNING: To reduce the risk of fire or electric
shock, DO NOT expose units to rain or
moisture.
WARNING: The apparatus should be
connected to a mains socket outlet with a
protective earthing connection.
IV
Contents
Chapter 1. Introduction...............................................................................................................1
1.1 Summary ......................................................................................................................................... 1
1.2 System technology .......................................................................................................................... 3
1.2.1 Basic system concept............................................................................................................................................. 3
1.2.2 IR radiation...............................................................................................................................................................3
1.2.3 Signal processing....................................................................................................................................................3
1.2.4 Audio quality modes ...............................................................................................................................................4
1.2.5 Carriers and channels ............................................................................................................................................4
1.3 Aspects of infrared distribution ........................................................................................................ 5
1.3.1 Ambient lighting.......................................................................................................................................................5
1.3.2 Objects, surfaces and reflections..........................................................................................................................5
1.3.3 Directional sensitivity of the receiver....................................................................................................................5
1.3.4 The footprint of the radiator ...................................................................................................................................6
1.3.5 Positioning the radiators.........................................................................................................................................6
1.3.6 Overlapped footprints and multipath effects .......................................................................................................7
Chapter 2. Digital Infrared Transmitter .......................................................................................8
2.1 Overview ......................................................................................................................................... 8
2.2 Functions and indications................................................................................................................ 9
2.3 Installation .....................................................................................................................................11
2.4 Connection ....................................................................................................................................12
2.4.1 To another transmitter ..........................................................................................................................................12
2.4.2 To external audio sources ...................................................................................................................................13
2.4.3 To emergency signal switch ................................................................................................................................13
2.4.4 To HCS-4385U/50 interpreter unit......................................................................................................................13
2.4.5 To HCS-8300 Paperless Multi-media Congress System................................................................................13
2.5 Menu structure .............................................................................................................................. 15
2.5.1 Transmitter menu structure (work mode: Master-Analog)...............................................................................15
2.5.2 Transmitter menu structure (work mode: Master- Interp. U)...........................................................................16
2.5.3 Transmitter menu structure (work mode: Master- Central U).........................................................................17
2.5.4 Transmitter menu structure (work mode: Slave, Bypass) ...............................................................................17
2.6 Configuration and operation .......................................................................................................... 18
2.6.1 Work Mode.............................................................................................................................................................19
2.6.2 Carrier(s) Setting...................................................................................................................................................20
2.6.3 Channel Name Setting .........................................................................................................................................20
2.6.4 Audio Input Sensitivity ..........................................................................................................................................20
2.6.5 Auxiliary Input Setting...........................................................................................................................................21
2.6.6 Front Panel Radiator Setting ...............................................................................................................................21
2.6.7 Operation Language Setting ...............................................................................................................................21
2.6.8 Network Setting .....................................................................................................................................................22
2.6.9 Use Testing Audio Signal.....................................................................................................................................22
2.6.10 U-disk Function Setting......................................................................................................................................22
2.6.11 Machine Rename................................................................................................................................................22
2.6.12 Parameters Backup/Restore.............................................................................................................................23
2.6.13 About.....................................................................................................................................................................23
2.6.14 Simultaneous Interpretation ..............................................................................................................................23
V
2.6.15 Floor Input Sen. Setting .....................................................................................................................................25
2.6.16 IR Audio In Gain Setting ....................................................................................................................................25
2.6.17 SI Channel Parameters Setting ........................................................................................................................25
2.6.18 Floor Distribution Setting ...................................................................................................................................25
2.6.19 Floor DRC Limit Setting .....................................................................................................................................25
2.6.20 Sampling Rate Setting .......................................................................................................................................25
2.6.21 Time Setting.........................................................................................................................................................26
2.6.22 Time Display Setting...........................................................................................................................................26
2.6.23 Play Floor on Unused SI Chs............................................................................................................................26
2.6.24 Alarm Setting .......................................................................................................................................................26
Chapter 3. Digital Infrared Radiator..........................................................................................28
3.1 Overview ....................................................................................................................................... 28
3.2 Functions and indications.............................................................................................................. 29
3.3 Position planning........................................................................................................................... 31
3.3.1 Rectangular footprints ..........................................................................................................................................31
3.3.2 Planning radiators .................................................................................................................................................31
3.3.3 Cabling....................................................................................................................................................................32
3.4 Mounting........................................................................................................................................33
3.4.1 Mounting on a floor stand ....................................................................................................................................33
3.4.2 Wall mounting........................................................................................................................................................33
3.4.3 Ceiling mounting....................................................................................................................................................34
3.4.4 Mounting on horizontal surface...........................................................................................................................34
3.5 Connecting to transmitter .............................................................................................................. 35
3.6 Output power selection.................................................................................................................. 35
3.7 Setting the radiator delay switches................................................................................................ 36
3.7.1 System with one transmitter ................................................................................................................................36
3.7.2 System with two or more transmitters in one room..........................................................................................37
3.7.3 System with more than 4 carriers and a radiator under a balcony ................................................................39
3.7.4 System that mixes TAIDEN radiator with other brand compatible radiator ..................................................39
Chapter 4. Digital Infrared Receiver ......................................................................................... 40
4.1 Overview ....................................................................................................................................... 40
4.2 Functions and indications.............................................................................................................. 41
4.3 Operation.......................................................................................................................................42
4.4 Testing the coverage area............................................................................................................. 43
4.5 Earphones ..................................................................................................................................... 44
4.6 Ni-MH Rechargeable Battery Pack ...............................................................................................45
Chapter 5. Charging Case and Storage case........................................................................... 46
5.1 Charging case ...............................................................................................................................46
5.1.1 Overview.................................................................................................................................................................46
5.1.2 Charging procedure ..............................................................................................................................................46
5.2 Storage case .................................................................................................................................47
Chapter 6. Fault diagnosis .......................................................................................................48
Chapter 7. Technical data......................................................................................................... 49
7.1 System specification...................................................................................................................... 49
7.2 Infrared transmitters ......................................................................................................................50
VI
7.3 Radiators and accessories ............................................................................................................ 50
7.3.1 Radiators (HCS-5100T) .......................................................................................................................................50
7.3.2 Wall mounting bracket (HCS-5100TBZJ)..........................................................................................................50
7.4 Receiver, Earphones, Battery Pack, Charging Case and Storage Case ......................................51
7.4.1 Receiver (HCS-5100R/RA)..................................................................................................................................51
7.4.2 Earphones..............................................................................................................................................................51
7.4.3 Ni-MH Rechargeable Battery Pack (HCS-5100BAT-16).................................................................................52
7.4.4 Charging Case (HCS-5100CHG/60)..................................................................................................................52
7.4.5 Storage Case (HCS-5100KS) .............................................................................................................................52
7.5 Connection details......................................................................................................................... 52
7.5.1 Mains cables..........................................................................................................................................................52
7.5.2 Audio cables ..........................................................................................................................................................52
7.5.3 Earphones..............................................................................................................................................................52
7.5.4 Emergency switch.................................................................................................................................................52
7.6 Guaranteed rectangular footprints................................................................................................. 53
7.7 Display language list .....................................................................................................................54
VII
Installation & User Guide
About this manual
This manual is a comprehensive guide to the installation
and operation of TAIDEN HCS-5100 Digital Infrared
Language Distribution System. It includes the detailed
description of the functions and interfaces of the
HCS-5100 system components, system connection and
installation, system set-up and operation.
The manual is divided into the following chapters:
Chapter 1: Introduction
Introduction to the HCS-5100 system, as well as
introducing the user into constitution, technical principle
and aspects of infrared distribution systems.
Chapter 2: Digital Infrared Transmitter
Detailed description of functions, connection,
configuration, operation and monitor function.
Chapter 3: Digital Infrared Radiator
Detailed description of functions, connection, position
planning, installation of the radiator, and using of power
switch and delay switch.
Chapter 4: Digital Infrared Receiver
Detailed description of functions, operation, using of
testing mode and introduction to earphone and battery.
Chapter 5: Charging Case and Storage Case
Detailed description of functions, charging operation,
precautions and introduction to the Storage Case of
HCS-5100KS.
Chapter 6: Fault diagnosis
Trouble-shooting guide for simple faults.
Chapter 7: Technical data
Mechanical and electrical details of the complete
HCS-5100 equipment.
VIII
Installation & User Guide
This manual is applicable to:
Digital Infrared Transmitter
HCS-5100MA/FS/04N/08N
4, 8 CHs Digital Infrared Transmitter (compatible with
HCS-4385U/50 or HCS-4100M/HCS-8300M,
single-mode optical fiber interface)
HCS-5100MA/04N/08N
4, 8 CHs Digital Infrared Transmitter (compatible with
HCS-4385U/50 or HCS-4100M/HCS-8300M)
HCS-5100MC/04N/08N/16N
4, 8, 16 CHs Digital Infrared Transmitter
Digital Infrared Radiator
HCS-5100T/15S
15W Digital Infrared Radiator (delay compensation
function, 75 Ω)
HCS-5100T/25S
25W Digital Infrared Radiator (delay compensation
function, 75 Ω)
HCS-5100T/35S
35W Digital Infrared Radiator (delay compensation
function, 75 Ω)
HCS-5100T/35B
35W Digital Infrared Radiator r (delay compensation
function, 75 Ω, switching mode power supply, without
fan)
Digital Infrared Receiver
HCS-5100R/04/08/16/32
4, 8, 16, 32 CHs Digital Infrared Receiver (LCD,
language display, optional rechargeable battery pack or
2xAA alkaline cells)
HCS-5100RA/04/08/16/32
4, 8, 16, 32 CHs Digital Infrared Receiver (LCD,
language display, 2xAA alkaline cells)
Earphone
EP-820AS
Single Earphone (TRS connector, Ring: NC)
EP-829
Single Earphone (TRS connector, Ring: NC)
EP-829SW
Single Earphone (Built-in magnetic control switch, TRS
connector, Ring: NC)
HCS-5100PA Headphone
EP-960BH
Headphone
Ni-MH Rechargeable Battery Pack
HCS-5100BAT-16
Ni-MH Rechargeable Battery Pack
IR Receiver Charging Case
HCS-5100CHG/60
IR Receiver Charging Case (60 pcs/case)
IR Receiver Storage Case
HCS-5100KS
IR Receiver Storage Case (100 pcs/case)
1
Chapter 1. Introduction
1.1 Summary
HCS-5100 series is a system for digital infrared
language distribution. It uses digital infrared audio
transmitting and control technique dirATC as well as a
special digital infrared chip, both TAIDEN's intellectual
property. HCS-5100 can be used in simultaneous
interpretation systems for multi-language conferences.
In simultaneous interpretation systems, the interpreter
translates the speaker’s speech and the translated
audio is transmitted within the conference venue by
modulated infrared radiation. Delegates may now
select a language on the infrared receiver and listen via
earphone.
The system can also be used for other audio signal
distribution occasions, such as music distribution
(mono as well as stereo).
The HCS-5100 series is compliant to IEC 61603-7
(Transmission of audio and/or video and related
signals using infra-red radiation-Part 7: Transmission
system for digital audio signals for conference and
similar applications) and IEC 60914 (Conference
systems - Electrical and audio requirements)，moreover,
it is compatible with other IR systems, compliant to IEC
61603-7.
Parts of IEC 61603 are used in this manual for a better
understanding of both theory and technique of the
system.
Figure 1.1 System overview
2
The system is composed of one or more of the
following:
Digital Infrared Transmitter
HCS-5100MA/FS/04N/08N
4, 8 CHs Digital Infrared Transmitter (compatible with
HCS-4385U/50 or HCS-4100M/HCS-8300M,
single-mode optical fiber interface)
HCS-5100MA/04N/08N
4, 8 CHs Digital Infrared Transmitter (compatible with
HCS-4385U/50 or HCS-4100M/HCS-8300M)
HCS-5100MC/04N/08N/16N
4, 8, 16 CHs Digital Infrared Transmitter
Digital Infrared Radiator
HCS-5100T/15S
15W Digital Infrared Radiator (delay compensation
function, 75 Ω)
HCS-5100T/25S
25W Digital Infrared Radiator (delay compensation
function, 75 Ω)
HCS-5100T/35S
35W Digital Infrared Radiator (delay compensation
function, 75 Ω)
HCS-5100T/35B
35W Digital Infrared Radiator r (delay compensation
function, 75 Ω, switching mode power supply, without
fan)
Digital Infrared Receiver
HCS-5100R/04/08/16/32
4, 8, 16, 32 CHs Digital Infrared Receiver (LCD,
language display, optional rechargeable battery pack
or 2xAA alkaline cells)
HCS-5100RA/04/08/16/32
4, 8, 16, 32 CHs Digital Infrared Receiver (LCD,
language display, 2xAA alkaline cells)
Earphone
EP-820AS
Single Earphone (TRS connector, Ring: NC)
EP-829
Single Earphone (TRS connector, Ring: NC)
EP-829SW
Single Earphone (Built-in magnetic control switch, TRS
connector, Ring: NC)
HCS-5100PA Headphone
EP-960BH
Headphone
Ni-MH Rechargeable Battery Pack
HCS-5100BAT-16
Ni-MH Rechargeable Battery Pack
IR Receiver Charging Case
HCS-5100CHG/60
IR Receiver Charging Case (60 pcs/case)
IR Receiver Storage Case
HCS-5100KS
IR Receiver Storage Case (100 pcs/case)
3
1.2 System technology
1.2.1 Basic system concept
The basic system concept is shown in figure 1.2.
The system consists of a number (N) of audio sources,
either analog or digital, which are connected to a
transmitter. The transmitter processes the audio signals
into an electrical output to feed the infrared radiator (see
section 1.2.3). The infrared signal is received by the
infrared receiver that processes the signal and outputs
an audio signal and/or associated data.
Figure 1.2 The basic system concept
1.2.2 IR radiation
HCS-5100 series audio signal is based on transmission
by modulated infrared radiation (IR). Infrared radiation
is part of the electro-magnetic spectrum, which is
composed of visible light, radio waves and other types
of radiation. The IR wavelength is larger than the
wavelength of visible light.
Conference hall privacy: the congress venue itself acts
as a barrier to infrared signals escaping. As Infrared is
unable to pass through opaque objects such as walls,
the signal cannot be overheard. Moreover, HCS-5100
series does not emit radio radiation. Operating the
system does not require a radio frequency license,
worldwide.
1.2.3 Signal processing
HCS-5100 uses high frequency carrier signals
(typically 2-8 MHz) to prevent interference by modern
light sources. Fully digital audio processing guarantees
a constant high audio quality.
The signal processing in the transmitter consists of the
following main steps (see figure 1.3):
1. Code – each analog audio channel is converted to a
digital signal; the digital signals are compressed to
increase the amount of information that can be
distributed on each carrier (compression ratio is
related to required audio quality); groups of up to 4
digital signals are combined into a digital information
stream. Extra fault algorithm information is added.
This information is used by the receivers for fault
detection and correction.
2. Modulation – a high frequency carrier signal is
phase-modulated with the digital information stream
by DQPSK digital modulation technique.
3. Filter.
4. Magnify.
5. Radiation – up to 8 modulated carrier signals are
combined and sent to the IR radiators, which convert
the carrier signals to modulated infrared light.
In the IR receivers, a reverse processing is used to
convert the modulated infrared light to separate digital
audio channels.
(a) Digital infrared transmitter schematic
(b) Digital infrared radiator schematic
(c) Digital infrared receiver schematic
Figure 1.3 Overview of the signal processing
Audio
source
Audio
source
Audio
source
Audio
source
Transmitter
Infrared
radiator
Infrared
receiver
N
4
1.2.4 Audio quality modes
HCS-5100 can transmit audio in four different quality
modes:
Mono, standard quality, maximum 32 channels
Mono, perfect quality, maximum 16 channels
Stereo, standard quality, maximum 16 channels
Stereo, perfect quality, maximum 8 channels
The standard quality mode uses less bandwidth and is
used for transmitting speech. The perfect quality mode
gives near CD quality and is used for transmitting
music.
1.2.5 Carriers and channels
HCS-5100 is transmitting within the 2 ～ 8 MHz
frequency band. It can transmit up to 8 different carrier
signals (depending on the transmitter type). Carriers 0
to 5 are according to IEC 61603-7 (see figure 1.4).
Figure 1.5 shows the band allocation.
Each carrier can carry up to 4 audio channels. The
exact number of channels per carrier depends on the
selected quality modes. Stereo signals use twice as
much bandwidth as mono signals; perfect quality uses
twice as much bandwidth as standard quality.
A mix of channels with different quality modes can be
chosen for each carrier, with the total bandwidth not
exceeding the available bandwidth. The table below
lists all possible channel combinations per carrier:
Figure 1.4 Standard band of HCS-5100 infrared language distribution system
(*6-8 MHz Extension band for carrier 6 and carrier 7)
Figure 1.5 Band allocation
Table 1.1 The numbers and quality modes of channels per carrier
Channel quality
Standard
Mono
Perfect
Mono
Standard
Stereo
Perfect
Stereo
Bandwidth
4 4 x 10 kHz
2 1 2 x 10 kHz and 1 x 20 kHz
2 1 2 x 10 kHz and 1 x 10 kHz (left) and 1 x 10 kHz (right)
1 1 1 x 20 kHz and 1 x 10 kHz (left) and 1 x 10 kHz (right)
2 2 x 10 kHz (left) and 2 x 10 kHz (right)
2 2 x 20 kHz
Possible
number
of
channels
per
carrier
1 1 x 20 kHz (left) and 1 x 20 kHz (right)
5
1.3 Aspects of infrared distribution
A good digital infrared language distribution system
ensures that all delegates in a conference venue
receive the distributed signals without disturbance.
This is achieved by using a sufficient number of well
positioned radiators, in such a way that uniform IR
signal with adequate strength can be received at any
place of the conference venue.
When planning an infrared distribution system several
aspects influencing the uniformity and quality of the
infrared signal should be considered. These are
described in the next sections.
1.3.1 Ambient lighting
HCS-5100 can be operated without any problem even
if fluorescent lamps (with or without electronic ballast or
dimming facility), such as TL lamps or energy saving
lamps are switched on. (see figure 1.6 and figure 1.7).
Figure 1.6 The interference band of the HF driven
lighting system (fluorescent lamp)
Figure 1.7 The infrared language distribution system
using 2-8 MHz eliminates disturbance from high frequency
lighting systems
For venues with large, unscreened windows, more
radiators should be added. For outdoor use, a site test
will be required to determine the required amount of
radiators. With sufficient radiators, the receivers will
work well, even in bright sunlight.
1.3.2 Objects, surfaces and reflections
Just like visible light, infrared radiation is reflected from
hard surfaces and refracted by hyaloid (glassy or
transparent appearance) objects. Both objects in the
conference venue and structure of the walls and
ceilings will influence the distribution of infrared light.
Infrared radiation is reflected from almost all hard
surfaces. Smooth, bright or shiny surfaces reflect well.
Dark or rough surfaces absorb a large part of the
infrared energy. Normally surfaces opaque to visible
light are also opaque to infrared radiation.
Shadows from walls and furniture will influence the
transmission of infrared light. This can be solved by
using a sufficient quantity of radiators.
They should be positioned in a manner to provide an
infrared field strong enough to cover the whole
conference area.
Take care not to direct radiators towards
uncovered windows, or most of this radiation will
be lost.
1.3.3 Directional sensitivity of the receiver
The sensitivity of a receiver is at its best when it is
aimed directly towards a radiator. To minimize the
disadvantage of this aspect, HCS-5100R/RA receiver
adopts an ingenious structural design with peculiar
270° ultra wide angle to get perfect IR capture and
sound quality at any disposition (see figure 1.8).
Figure 1.8 Directional characteristics of the receivers
6
1.3.4 The footprint of the radiator
The number of transmitted carriers and the output
power of the radiator determine the coverage area of a
radiator. The total radiation energy of a radiator is
distributed over transmitted carriers. The coverage
area becomes proportionally smaller if more carriers
are used. The receiver requires a strength of the IR
signal of 4 mW/m
2
per carrier to work well (resulting in
an 80 dB S/N ratio for uninterrupted audio channels).
The cross section of the 3-dimensional radiation with
the reception level of participants is the footprint (the
dark grey area in figure 1.9 to figure 1.11). In this area,
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 height and the angle of the radiator.
Figure 1.9 The radiator mounted at 15° to the ceiling
Figure 1.10 The radiator mounted at 30° to the ceiling
Figure 1.11 The radiator mounted perpendicular (at 90°)
to the ceiling
1.3.5 Positioning the radiators
Because infrared radiation can reach a receiver directly
and/or via diffused reflections, it’s important to take this
into consideration when installing the radiators. For
best reception quality, receivers should pick up direct
infrared radiation. In addition reflections will improve
the signal reception. In big conference halls, infrared
signal will be blocked by the people in front of the
receiver. For that reason the radiator should be
installed at an appropriate height, usually not below 2.5
meters.
For concentrically arranged conference venues,
radiators located high up and faced to the center from
every angle can cover the area very efficiently. If the
direction of the receiver changes, e.g. changing seat
direction, the radiators can be installed in the corners of
the room.
In the case of the seating is always directed towards
the IR emitting source, there are no radiators needed at
the back (see figure 1.12).
Figure 1.12 Radiator positioning in a conference hall
with auditorium seating and podium
7
If the path of the infrared signals is blocked, e.g. under
balconies, at least one additional radiator is needed to
cover the ‘shaded’ area (see figure 1.13).
Figure 1.13 Radiator for covering seats beneath a
balcony
1.3.6 Overlapped footprints and multipath
effects
If footprints of two radiators overlap, the total coverage
area maybe larger than the sum of the two separate
footprints. In an area with overlap effect, the individual
radiation signals of two radiators are added, resulting in
an increase of the radiation intensity, larger than the
required intensity.
However, due to the differences in the delays of the
signals from two or more radiators, the signals may
cancel out each other (multipath effect). In a
worst-case situation, loss of reception at some
positions (black spots) may be the consequence.
Figure 1.14 and figure 1.15 illustrate the effect of
overlapped footprints and differences in signal delays.
Figure 1.14 Increased coverage area caused by added
radiation power
Figure 1.15 Reduced coverage area caused by
differences in cable signal delay
The lower the carrier frequency, the less susceptible
the receiver is for differences in signal delays.
The signal delays can be compensated by adjusting
the delay compensation switches on the radiators (see
section 3.7).
8
Chapter 2. Digital Infrared Transmitter
2.1 Overview
The HCS-5100M transmitter is the heart of the
HCS-5100 system. Up to 32 unbalanced audio signals
can be accepted (under combination mode) via
digital/analog audio signal input connectors. It can be
connected to HCS-8300 or HCS-4100/50 congress
main unit directly via optical fiber interface, 6P-DIN
connector or DCS interface (RJ45 standard socket),
and it can also be connected to other discussion and
interpretation systems, such as HCS-4385U/50
interpreter units, or be used as a stand-alone system
for distributing external audio signals. HCS-5100M is
suitable for either tabletop or 19-inch rack mounting
using. Four feet (for tabletop) and two brackets (for
rack mounting) are supplied.
Types:
HCS-5100MA/FS/04N/08N
4, 8 CHs Digital Infrared Transmitter (compatible with
HCS-4385U/50 or HCS-4100M/HCS-8300M,
single-mode optical fiber interface)
HCS-5100MA/04N/08N
4, 8 CHs Digital Infrared Transmitter (compatible with
HCS-4385U/50 or HCS-4100M/HCS-8300M)
HCS-5100MC/04N/08N/16N
4, 8, 16 CHs Digital Infrared Transmitter
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2.2 Functions and indications
Front of HCS-5100M/N
Rear of HCS-HCS-5100MA/FS/N
Rear of HCS-5100MA/N
Rear of HCS-5100MC/N
Figure 2.1 HCS-5100M/N Digital Infrared Transmitter
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Front:
1. Power switch with indicator (red)
When the switch is off, it does not completely
disconnect the unit from mains
2. “MENU” button
a. Under current state, press the “MENU” button
go to main menu;
b. Under main menu, press the “MENU” go to
sub menu;
c. Select/Deselect in network configuration.
3. “” (Left) button
4. “” (Right) button
5. “EXIT” button
6. Monitor channel select knob
7. Monitor earphone interface
Ø 3.5 mm jack for stereo monitor earphone
8. Monitor volume control knob
9. Mini IR radiator
4 IREDs transmitting the same infrared signal as
the radiator output for monitor purpose
10. Display
256×32 LCD. Display the status of the transmitter
and the menu of system configuration
Rear:
11. HF signal output
6 BNC connectors for output HF signal to
radiator. To each connector, up to 30 radiators
can be connected
12. HF signal input
1 BNC connector for receiving HF signal from
other transmitter
13. Single-mode fiber, SC connecter
For connecting to the congress main unit,
congress extension main unit or 8-channel audio
input interface
14. INTERPRETER’S UNIT / MAIN UNIT 6P-DIN
interface
For connecting to HCS-4385U/50 interpreter unit
For connecting to HCS-4100M/50 or
HCS-8300M congress main unit via CBL6PP-02
extension cable
15. DCS interfaces
For connecting to HCS-4100M/50 or
HCS-8300M congress main units
16. Extension interface
For connecting to another transmitter under
combination (master + slave) mode
17. Fire alarm linked trigger interface
When this switch is closed, the emergency audio
signal on the Aux-R input is distributed to all
output channels and overriding all other audio
inputs
18. Ethernet
For communication between the conference
main unit and the PC under TCP/IP protocol to
realize remote controlling; furthermore, it
enables remote controlling by wireless touch
panel through central control system.
19. Power supply
20. RS-232
For connecting to a central control system for
central controlling, as well as for system
diagnosis.
21. A type USB interface
To plug-in a USB disk
22. Mini USB interface
For connecting to PC
23. Audio signal output
for output DCS multi channel audio
24. Audio signal input
4, 8 or 16 audio connectors to connect external
unbalanced audio input signals. The number of
connectors depends on the transmitter type
25. Auxiliary audio input
female XLR connectors for external audio inputs
to connect auxiliary balanced audio signals such
as music, floor language or emergency audio
signal
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2.3 Installation
The transmitter can be fixed in a standard 19-inch
cabinet. The transmitter is equipped with a pair of fixing
brackets ①. First unscrew the lateral screws ② from
the housing. Then fasten the brackets with these
screws and put the CMU in the cabinet. Finally fix the
four holes ③ up with screws.
Figure 2.2 Installation of transmitter
In addition, 1U metal stripes are included as decoration
to be installed between the transmitters in the cabinet.
It is also good for the ventilation and cooling off. Fix up
the four holes ③ with screws.
Figure 2.3 Decoration of cabinet
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