Shure DT 6008 User manual

@2015 Shure Incorporated
User Manual DCS 6000 Digital IR System rev L.docx
Conferencing and Discussion Systems
DCS 6000 Digital IR System
USER GUIDE

DCS 6000 Digital IR System User Manual
@2015 Shure Incorporated User Manual DCS 6000 Digital IR System rev L.docx
Table of Contents
Table of Contents .................................... 2
Important ................................................ 4
Important Safeguards .......................... 4
Installation precautions ....................... 4
Cleaning ............................................... 4
Repacking ............................................. 4
Warranty .............................................. 4
System description and planning ............. 5
System overvie .................................. 5
Infra-red transmitter .............................. 5
Infra-red radiators ................................. 5
Infra-red receivers ................................. 5
System technology ............................... 5
IR radiation ........................................... 5
Signal Processing ................................... 6
Quality modes ....................................... 6
Carriers and channels ............................. 7
Aspects of IR distribution systems ....... 7
Receiver directional sensitivity ................. 7
Foot rint of the radiator ......................... 7
Ambient lighting .................................... 8
Objects, surfaces and reflections ............. 9
Positioning the radiators ......................... 9
Overla ing foot rints and multi ath effects
......................................................... 10
Planning an DCS 6000 Digital infra-red
radiation system ................................. 11
Rectangular foot rints .......................... 11
Planning radiators ................................ 12
Cabling ............................................... 12
Setting radiator delay s itches .......... 12
System with one transmitter ................. 13
System with two or more transmitters in
one room ............................................ 15
System with more than 4 carriers and a
radiator under a balcony ....................... 16
Testing the coverage area .................. 16
Testing during installation ..................... 16
Testing during a meeting ......................16
Testing all ositions ..............................16
Bad coverage ......................................16
Black s ots..........................................16
Interference from IR systems ................17
DT 6008 & DT 6032 Transmitters........... 18
Description ......................................... 18
Installation ......................................... 19
Connections ........................................ 19
Connecting the DCS 6000 Conference
System ...............................................19
Connecting other audio sources .............19
Connecting an emergency signal ............19
Connecting another transmitter .............20
Using the configuration menu ............. 21
Overview ............................................21
Navigate through the menu ...................21
Exam les ............................................23
Configuration and operation ............... 26
Start-u ..............................................26
Main menu ..........................................26
View transmitter status .........................27
View fault status ..................................27
Set monitoring o tions .........................28
View version information .......................28
Set transmission mode .........................29
Set number of channels ........................29
Set channel quality and assign in uts to
channels .............................................30
Set channel names ...............................31
Disable or enable carriers ......................31
View carrier assignments ......................31
Configure auxiliary in uts......................32
Set sensitivity of the in uts ...................32
Enable / disable IR-monitoring ...............33
Enable/disable head hone out ut...........33
Choose transmitter name ......................33

DCS 6000 Digital IR System User Manual
@2015 Shure Incorporated User Manual DCS 6000 Digital IR System rev L.docx
Reset all o tions to factory default values33
Digital Radiators.................................... 34
Medium & High Po er Radiators ........ 34
Descri tion ......................................... 34
Radiator status indication ..................... 34
Mounting the radiators ......................... 35
Connecting radiators to the transmitter .. 37
Digital Receivers ................................... 38
Description ......................................... 38
Operation ........................................... 38
Reception test mode ........................... 39
Receiver headphones .......................... 39
CT 6056 Charging Tray .......................... 40
Description ......................................... 40
Charging procedure ............................ 40
Troubleshooting .................................... 41
Typical schematics ................................ 43
Technical Specifications ........................ 44
System Specification .......................... 44
IR Transmitters Specification ............. 45
DT 6008/6032 Infrared Digital Transmitter
.........................................................45
Radiators & Accessories ...................... 46
RA 6013 / RA 6025 High Power Radiators46
WB 6000 Wall Mounting Bracket ............46
Receivers & Battery Packs .................. 47
DR 6004, DR 6008 & DR 6032 Digital IR
Receivers ............................................47
BP 6001 NiMH Battery Pack ...................47
Charging Trays .................................... 47
CT 6056 Charging Tray .........................47
Connection details .............................. 48
Mains cables ........................................48
Audio cables ........................................48
Ear hones ...........................................48
Emergency switch ................................48
Accessories ......................................... 49
Guaranteed footprints ......................... 50

DIS Digital Conference System User Manual
4
Important
Important Safeguards
Prior to installing or operating this product
al ays read the Safety Instructions hich are
available as a separate document.
Installation precautions
Do not install the unit in a location near heat
sources such as radiators or air ducts, or in a lace
ex osed to direct sunlight, excessive dust or
humidity, mechanical vibration or shock.
To avoid moisture condensations do not install the
unit where the tem erature may rise ra idly.
When the rechargeable battery ack is used, it is
advisable to check regularly after three years that
the batteries are not leaking. If there is any sign of
leakage or corrosion, re lace the battery ack.
Ensure that only the battery ack BP 6001 is used.
The battery ack has to be re laced at least every
five years.
Cleaning
To kee the cabinet in its original condition,
eriodically clean it with a soft cloth. Stubborn
stains may be removed with a cloth lightly
dam ened with a mild detergent solution. Never
use organic solvents such as thinners or abrasive
cleaners since these will damage the cabinet.
Repacking
Save the original shi ing cardboard box and
acking material; they will become handy if you
ever have to shi the unit. For maximum
rotection, re- ack the unit as originally acked
from the factory.
Warranty
The individual units in the DCS 6000 system are
minimum covered by 12 months warranty
against defects in materials or workmanshi .

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5
System description and planning
System overview
DCS 6000 Digital IR is a system for wireless
distribution of audio signals via infra-red radiation.
It can be used in a simultaneous inter retation
system for international conferences where multi le
languages are used.
To enable all artici ants to understand the
roceedings, inter reters simultaneously translate
the s eaker’s language as required. These
inter retations are distributed throughout the
conference venue, and delegates select the
language of their choice and listen to it through
head hones.
The DCS 6000 Digital IR system can also be used
for music distribution (mono as well as stereo).
Figure 0-A DCS 6000 Digital IR system overview (with DCS 6000-
system as input)
The DCS 6000 Digital IR Audio distribution System
com rises one or more of the following:
Infra-red transmitter
The transmitter is the core of the DCS 6000 Digital
IR system. Two ty es are available:
•DT 6008 with in uts for 8 audio channels
•DT 6032 with in uts for 32 audio channels
Infra-red radiators
Two ty es of radiators are available:
•RA 6013 medium- ower radiator for small/
medium conference venues
•RA 6025 high- ower radiator for medium/large
conference venues
Both ty es can be switched between full and half
ower use. They can be mounted on walls,
ceilings or floor stands.
Infra-red receivers
Three multi-channel infra-red receivers are
available:
•DR 6004 for 4 audio channels
•DR 6008 for 8 audio channels
•DR 6032 for 32 audio channels
They can o erate with a rechargeable NiMH
battery ack or with dis osable batteries.
Charging circuitry is incor orated in the receiver.
Note: The charging unit used for charging the
receivers fitted with a rechargeable NiMH battery
pack as well as the rechargeable battery pack will
not be available before year 2006.
System technology
IR radiation
The DCS 6000 Digital IR system is based on
transmission by modulated infra-red radiation.
Infra-red radiation forms art of the electro-
magnetic s ectrum, which is com osed of visible
light, radio waves and other ty es of radiation. It
has a wavelength just above that of visible light.
Like visible light, it is reflected from hard
surfaces, yet asses through translucent
materials such as glass.
The infra-red radiation s ectrum in relation to
other relevant s ectra is shown in Figure 0-A.
1 Daylight s ectrum
2 Sensitivity of the human eye
3 IR radiator
4 Sensitivity of IR sensor
5 Sensitivity of IR sensor with daylight filter
Figure 0-A Infra-red radiation spectrum in relation to other
spectra
100
75
1
42
50
25
0400 500 600 700 800
5 3
900 1000 nm
%

DIS Digital Conference System User Manual
6
Signal Processing
The DCS 6000 Digital IR system uses high
frequency carrier signals (ty ically 2-8 MHz) to
revent interference roblems with modern light
sources (see section ‘IR radiation’). The digital
audio rocessing guarantees a constant high audio
quality. The signal rocessing in the transmitter
consists of the following main ste s (see Figure
0-B):
1. A/D conversion - Each analogue audio channel
is converted to a digital signal.
2. Compression - The digital signals are
com ressed to increase the amount of
information that can be distributed on each
carrier. The com ression factor is also related to
the required audio quality.
3. Protocol Creation - Grou s of u to four 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.
4. Modulation - A high frequency carrier signal is
hase-modulated with the digital information
stream.
5. Radiation – U to 8 modulated carrier signals
are combined and sent to the IR radiators, which
convert the carrier signals to modulated
infra-red light. In the IR receivers a reverse
rocessing is used to convert the modulated
infra-red light to se arate analogue audio
channels.
In the IR receivers a reverse rocessing is used
to convert the modulated infra-red light to
se arate analogue audio channels .
Quality modes
The DCS 6000 Digital IR system can transmit
audio in four different quality modes:
•Mono, conference quality, maximum 32
channels (standard quality)
•Mono, Hi FI quality, maximum 16
channels ( remium quality)
•Stereo, conference quality, maximum 16
channels (standard quality)
•Stereo, Hi FI quality, maximum 8
channels ( remium quality)
The conference quality mode uses less
bandwidth and can be used for transmitting
s eech. For music the HI-FI quality mode gives
near CD quality.
Figure 0-B Overview of the signal processing (for one carrier)
A/D Conversion
& Compression
A/D Conversion
& Compression
Audio
Channel
Audio
Channel
Protocol Creation
& Modulation
4x Carrier (to IR Radiators)
4x

DIS Digital Conference System User Manual
7
Carriers and channels
The DCS 6000 Digital IR system can transmit u to
8 different carrier signals (de ending on the
transmitter ty e). Each carrier can contain u to 4
different audio channels.
The maximum number of channels er carrier is
de endent on the selected quality modes. Stereo
signals use twice as much bandwidth as a mono
signal, remium quality uses twice as much
bandwidth as standard quality. Per carrier a mix of
channels with different quality modes is ossible, as
long as the total available bandwidth is not
exceeded.
The table below lists all ossible channel
combinations er carrier:
Figure 0-C Directional characteristics of the receivers
Channel Quality
Mono
Conference
Mono
Hi-Fi
Stereo
Conference
Stereo
Hi-Fi
Band idth
Possible
number of
channels
er carrier
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
1 1 x 20 kHz (left) and 1 x 20 kHz (right)
Figure 0-D Possible channel combinations per carrier
Aspects of IR distribution systems
A good infra-red distribution system ensures that all
delegates in a conference venue receive the
distributed signals without disturbance. This is
achieved by using enough radiators, laced at well
lanned ositions, so that the conference venue is
covered with uniform Irradiation of adequate
strength.
There are several as ects that influence the
uniformity and quality of the infra-red signal, which
must be considered when lanning an infra-red
radiation distribution system. These are discussed
in the next sections.
Receiver directional sensitivity
The sensitivity of a receiver is at its best when it is
aimed directly towards a radiator. The axis of
maximum sensitivity is tilted u wards at an angle
of 45 degrees (see Figure 0-C).
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 ra idly.
Footprint of the radiator
The coverage area of a radiator de ends on the
number of transmitted carriers and the out ut
ower of the radiator. The coverage area of the
RA 6025 radiator is twice as large as the
coverage area of the RA 6013. The coverage area
can also be doubled by mounting two radiators
side by side. The total radiation energy of a
radiator is distributed over the transmitted
carriers. When more carriers are used, the
coverage area gets ro ortionally smaller.
The receiver requires a strength of the IR signal
of 4 mW/m2 er carrier to work without errors
(resulting in a 80 dB S/N ratio for the audio
channels). The effect of the number of carriers
on the coverage area can be seen in Figure 0-A

DIS Digital Conference System User Manual
8
and Figure 0-B. The radiation attern is the area
within which the radiation intensity is at least the
minimum required signal strength.
Figure 0-A Total coverage area of RA 6013 & RA 6025 for 1 to 8
carriers
Figure 0-B Polar diagram of the radiation pattern for 1, 2, 4 & 8
carriers
The cross section of the 3-dimensional radiation
attern with the floor of the conference venue is
known as the foot rint (the white area in Figure 0-C
to Figure 0-E).
This is the floor area in which the direct signal is
strong enough to ensure ro er rece tion, when the
receiver is directed towards the radiator. As shown,
the size and osition of the foot rint de ends on the
mounting height and angle of the radiator.
Figure 0-C The radiator mounted at 15° to the ceiling
Figure 0-D The radiator mounted at 45° to the ceiling
Figure 0-E The radiator mounted perpendicular (at 90°) to the
ceiling
Ambient lighting
The DCS 6000 Digital IR system is ractically
immune for the effect of ambient lighting.
Fluorescent lam s (with or without electronic
ballast or dimming facility), such as TL lam s or
energy saving lam s give no roblems with the
DCS 6000 Digital IR system. Also sunlight and
artificial lighting with incandescent or halogen
lam s u to 1000 lux give no roblems with the
DCS 6000 Digital IR system.
1
8
2
4

DIS Digital Conference System User Manual
9
When high levels of artificial lighting with
incandescent or halogen lam s, such as s otlights
or stage lighting are a lied, you should directly
oint a radiator at the receivers in order to ensure
reliable transmission. For venues containing large,
unscreened windows, you must lan on using
additional radiators.
For events taking lace in the o en air a site test
will be required in order to determine the required
amount of radiators. With sufficient radiators
installed, the receivers will work without errors,
even in bright sunlight.
Objects, surfaces and reflections
The resence 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 lays an im ortant 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 ro ortions of the infra-red
signal (see Figure 0-F). With few exce tions it
cannot ass through materials that are o aque to
visible light.
Figure 0-F The texture of the material determines how much light is
reflected and how much is absorbed
Problems caused by shadows from walls or furniture
can be solved by ensuring that there are sufficient
radiators and that they are well ositioned, so that
a strong enough infra-red field is roduced over the
whole conference area. Care should be taken not to
direct radiators towards uncovered windows, as
most of this radiation will subsequently be lost.
Positioning the radiators
Since infra-red radiation can reach a receiver
directly and/or via diffused reflections, it is
im ortant to take this into account when
considering the ositioning of the radiators. Though
it is best if receivers ick u direct ath infra-red
radiation, reflections im rove the signal rece tion
and should therefore not be minimized. Radiators
should be ositioned high enough not to be blocked
by eo le in the hall (see Figure 0-G and Figure
0-H).
Figure 0-G Infra-red signal blocked by a person in front of the
participant
Figure 0-H Infra-red signal not blocked by a person in front of the
participant
The figures below illustrate how infra-red
radiation can be directed to conference
artici ants. In Figure 0-I, the artici ant is
situated clear from obstacles and walls, so a
combination of direct and diffused radiation can
be received. Figure 0-J shows the signal being
reflected from a number of surfaces to the
artici ant.
Figure 0-I Combination of direct and reflected radiation
100% 40% 100% 80%

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Figure 0-J Combination of several reflected signals
For concentrically arranged conference rooms,
centrally laced, angled radiators located high u
can cover the area very efficiently. In rooms with
few or no reflecting surfaces, such as a darkened
film- rojection room, the audience should be
covered by direct ath infra-red radiation from
radiators ositioned in front.
When the direction of the receiver changes, e.g.
with varying seat arrangements, mount the
radiators in the corners of the room (see Figure
0-K). If the audience is always directed towards the
radiators, you do not need radiators at the back
(see Figure 0-L).
If the ath of the infra-red signals is artially
blocked, e.g. under balconies, you should cover the
‘shaded’ area with an additional radiator (see Figure
0-M). The figures below illustrate the ositioning of
the radiators:
Figure 0-K Radiator position for covering seats in a square
arrangement
Figure 0-L Radiator positioning in a conference hall with
auditorium seating and podium
Figure 0-M Radiator for covering seats beneath a balcony
Overlapping footprints and multipath
effects
When the foot rints of two radiators artly
overla , the total coverage area can be larger
than the sum of the two se arate foot rints. In
the overla area the signal radiation ower of
two radiators are added, which increases the
area where the radiation intensity is larger than
the required intensity.
However, differences in the delays of the signals
icked u by the receiver from two or more
radiators
can result in that the signals cancel each other
out (multi ath effect). In worst-case situations
this can lead to a loss of rece tion at such
ositions (black s ots).