Master Link

Master Link
BEOLINK
Master Link Handbook
MASTER LINK
MASTER LINK
PREFACE
This handbook deals with Bang & Olufsen’s BeoLink (Master Link), paying
special attention to the installation requirements applying to it.
Consequently, this handbook is especially targeted on dealers and
installers.
Any product, for example a stereo system, a PC, a natural gas system, etc.,
that has to be incorporated into a network needs to have certain
requirements satisfied by the surroundings in connection with its
installation. These requirements must ensure the optimal operation of the
system after installation.
The same applies to Bang & Olufsen’s BeoLink. Although the
requirements are not many, it is essential that they be known since
compliance with the basic requirements often determines whether or not
the system is able to operate once the installation has been completed.
The handbook gives a brief and precise introduction to the basic rules
that must be observed in connection with a BeoLink installation, and it
describes how compatibility is achieved between Master Link products
and Master Control Link products.
The handbook has been designed partly as a reference book but the
entire handbook should be read in order to obtain the total overview.
Only then will it serve its purpose as a reference book.
MASTER LINK
CONTENTS
1
READING INSTRUCTIONS
How should I read this handbook
2
GENERAL DESCRIPTION
What is a BeoLink system/Master Link system, and what can it do for me?
4
PRODUCT DESCRIPTION
Description of BeoLab 3500, BeoLab 2000 and BeoLink boxes
11
SETUPS
Description of recommended Master Link setups, compatibility setups,
special setups and option programming
22
DIMENSIONING
Description of how much cable may be used
23
INSTALLATION TYPES
Description of various installation types
26
INSTALLATION TIPS
Practical advice for use in connection with installation
29
TECHNICAL DESCRIPTION
Description of various cables which are typically used
32
TROUBLESHOOTING GUIDE
What could be wrong when the system will not operate?
35
GLOSSARY
Description of specific words and abbreviations
39
ACCESSORIES LIST
45
FOR NOTES
MASTER LINK
1
READING INSTRUCTION
This handbook employs various symbols to illustrate audio products, video
products and speakers. Unless otherwise specified in the text, these
symbols merely have to be understood as covering one of these product
areas and not as the specific product which the illustration may depict.
Since the handbook is focusing particularly on the basic rules in
connection with the installation of the systems, variables which are
specific to particular products have been omitted to the greatest possible
extent. This means that the handbook will always be relevant in
connection with installation of the Master Link; both with regard to
products launched prior to the publication of the handbook and products
that will be launched later. The basic rules applying to the Master Link
will always be the same.
If information specific to a particular product is required, please see
Bang & Olufsen’s Product Configuration Guide.
2
MASTER LINK
GENERAL DESCRIPTION
What is BeoLink?
BeoLink is a Bang & Olufsen expression that covers:
1. The ability to create and operate audio-video systems, and
2. The ability to distribute sound and picture from a Bang & Olufsen main
room system to other rooms in the home, and to operate the main
room system from the rooms connected by means of BeoLink.
BeoLink is not a product - it is a number of features that are the result of
the intelligent interaction between products, a synergy effect.
BeoLink may be obtained in different ways, depending upon the products
that are used: basically either the Audio Aux Link/Master Control Link
(MCL) system or the Master Link system. The latter is the most recent
system, and the long-term objective is that it shall replace the other
system.
Introducing Master Link
Master Link perceived as an interconnection method offers some
convenient benefits not available with the MCL system.
An example is that whereas the interconnection in the main room
previously had to be carried out with one type of cable (Audio Aux Link)
and the interconnection between the main room and the link rooms with
another type of cable (Master Control Link), the new Master Link
connection offers a bustype connection that caters for all interconnections
between the main room audio and video systems as well as connections to
the link rooms.
Another benefit is the completely individual volume control and tone
adjustments in each link room, due to the distribution of audio signals at
line level and the application of power amplifiers in each link room.
Contrary to the previous signal distribution system, Master Link signals are
distributed as balanced signals, permitting distribution of CD-quality
sound, even when the cable distances are fairly long.
Finally, the distribution hardware has been improved, e.g. by the
introduction of a reduced signal cable diameter and new cable termination
methods. The benefit of this improvement is that installation has become
simpler and more elegant. The simplification is most evident in smaller
installations, e.g. the installation of an intelligent kitchen loudspeaker
being intuitively and quickly accomplished, whereas larger installations still
require some planning and installation skills - as implied by the presence of
this booklet.
MASTER LINK
3
BeoLink distribution covers the ability to distribute both audio and video
signals. In the Master Link system audio and control signals are
distributed by means of one single cable, whereas the distribution of
video signals requires a coaxial cable network. Only BeoLink compatible
products can be fully integrated in a BeoLink system, but previous system
products may be integrated to a limited extent, as described in the
chapter on Compatibility setups, page 17.
4
MASTER LINK
PRODUCT DESCRIPTION
Below you will find a description of the individual elements included with
the Master Link products as well as their scope of application.
Content
BeoLab 3500
The BeoLab 3500 is an integrated link room speaker consisting of an
active speaker with Master Link (ML) connection, an IR receiver and a
display. BeoLab 3500 also has Master Control Link (MCL) connection.
Furthermore, the BeoLab 3500 has a built-in clock.
The BeoLab 3500 is supplied with a mains lead and a bracket for wall
mounting.
Application
The BeoLab 3500 is used in link rooms where you wish to have an
integrated active speaker. From the BeoLab 3500 it is possible to listen to
all sources from the main room, both audio and video sources.
BeoLab 3500 has built-in sound control, meaning that tone and volume
can be adjusted independently of the main room.
With the tone control it is possible to adjust balance, bass, treble and
loudness individually.
BeoLab 3500 offers the following local operation features:
- Timer on/off
- PLAY / ST.BY
Part no.
1160111 (EU)
1160211 (GB)
1160311 (USA/CDN)
1160411 (JAP)
1160511 (AUS)
Miscellaneous
Besides the parts included with the BeoLab 3500, the installation may
require a Master Link cable as well as plugs, sockets and junction boxes
(see the section on installation types, page 23).
MASTER LINK
Content
5
BeoLab 2000
BeoLab 2000 is an integrated link room speaker consisting of an active
speaker with Master Link (ML) connection, an IR receiver and close-up
operation.
The BeoLab 2000 is supplied with a mains lead and a bracket for wall
mounting.
BANG & OLUFSEN
3m
Application
The BeoLab 2000 is used in link rooms where you wish to have an
integrated active speaker. From the BeoLab 2000 it is possible to listen to
all sources from the main room, both audio and video sources.
BeoLab 2000 has built-in volume control, meaning that volume can be
adjusted independently of the main room.
BeoLab 2000 offers the following close-up operation features:
-
Timer on/off
PLAY / ST.BY
Volume up and down
Close-up selection of Radio, CD or Tape
Step-button for switching programs or tracks
Part no.
1164129 (EU)
1164229 (GB)
1164329 (USA/CDN)
1164429 (JAP)
1164529 (AUS)
Miscellaneous
Besides the parts included with the BeoLab 2000, the installation requires
a Master Link cable as well as plugs, sockets and junction boxes (see the
section on installation types, page 23).
6
Content
MASTER LINK
BeoLink Active
BeoLink Active consists of a control box, an IR receiver, a receiver cable
and a mains lead.
Application
BeoLink Active speakers are used in link rooms where active speakers are
required. All Bang & Olufsen active speakers may be connected.
BeoLink Active has built-in sound control, meaning that tone and volume
can be adjusted independently of the main room.
With the tone control it is possible to adjust balance, bass, treble and
loudness individually.
With a BeoLink Active it is possible to listen to the sound from all main
room products - both the video and audio sources.
BeoLink Active offers the following local operation features:
- Timer on/off
- PLAY / ST.BY
- Volume up and down
Part no.
1161666
1161866, (USA/CDN)
Miscellaneous
Besides the parts included with the BeoLink Active, the installation
requires a Master Link cable as well as plugs, sockets and junction boxes
(see the section on installation types, page 23).
MASTER LINK
Content
7
BeoLink Passive
BeoLink Passive consists of a control box, an IR receiver, a receiver cable
and a mains lead.
Application
BeoLink Passive speakers are used in link rooms where passive speakers
are required. All Bang & Olufsen passive speakers may be connected.
BeoLink Passive has built-in sound control, meaning that tone and volume
can be adjusted independently of the main room.
With the tone control it is possible to adjust balance, bass, treble and
loudness individually.
With a BeoLink Passive it is possible to listen to the sound from all main
room products - both the video and audio sources.
BeoLink Passive offers the following local operation features:
- Timer on/off
- PLAY / ST.BY
- Volume up and down
Part no.
1165566 (AUS)
1165666 (EU)
1165766 (GB)
1165866 (USA/CDN)
Miscellaneous
Besides the parts included with the BeoLink Passive, the installation
requires a Master Link cable as well as plugs, sockets and junction boxes
(see the section on installation types, page 23).
8
Content
MASTER LINK
BeoLink Video
BeoLink Video consists of a control box, a mains lead and a datalink cable.
Apart from this you need an coaxial cable from the HF outlet of the video
system in the main room. This cable is connected to the aerial input of the
link room TV.
Application
BeoLink Video is used in link rooms where both sound and picture are
required via a Bang & Olufsen TV set.
With BeoLink Video it is possible to use all the sources in the main room.
In particular it is possible to operate SAT and V.TAPE but it is further
possible to watch a decoded programme from the TV set in the main
room. In addition, it is possible to operate all audio sources, thereby
using the speakers in Bang & Olufsen’s TV sets for obtaining audio sound.
If you want even greater sound in the room you can connect Bang &
Olufsen’s active speakers to the TV set.
BeoLink Video is connected to the TV set by means of the 7-pin datalink
cable and to the main room with a Master Link cable. Apart from this an
aerial installation is needed (see page 24).
Part no.
1161566
Miscellaneous
Besides the parts included with the BeoLink Video, the installation
requires a Master Link cable as well as plugs, sockets and junction boxes
(see the section on installation types, page 23).
MASTER LINK
Content
BeoLink Converter
BeoLink Converter consists of a control box and a mains lead.
1.5 m
Application
BeoLink Converter is used when audio and video products with Master
Link and Audio Aux Link (datalink) have to be interconnected.
BeoLink Converter can be used in conjunction with both a video and an
audio master. BeoLink Converter features autoconfiguration, meaning
that it is able to detect automatically whether it is installed in a Master
Link audio or in a Master Link video system. Configuration takes place
when it is connected to the mains.
BeoLink Converter can also be used as ML-driver*, which means that it is
possible to connect e.g. a BeoCenter 2300 via the BeoLink Converter to
the Master Link and thereby distribute sound to all link room products
(see page 17).
BeoLink Converter is used in compatibility setups (see the section on
recommended compatibility setups, page 17).
Part no.
1161166
1161266 (USA/CDN)
1161466 (old version)
Miscellaneous
Besides the parts included with the BeoLink Converter, the installation
requires a Master Link cable as well as plugs, sockets and junction boxes
(see the section on installation types, page 23).
*NOTE!
BeoLink Converter type no. 1161466 can not be used as ML-driver.
9
10
MASTER LINK
Content
ML/MCL Converter
ML/MCL Converter consists of a control box and an amplifier.
1.5 m
Application
ML/MCL Converter is used where a conversion from Master Link (ML) to
Master Control Link (MCL) is wanted. Such a conversion is required if you
want to maintain the existing Master Control Link system although the
audio system in the main room is replaced with a Master Link driver, for
example a BeoSound Ouverture.
ML/MCL Converter can also be used in conjunction with a Beosystem AV
9000 with an AV 9000 Master Panel.
See setups with ML/MCL Converter, page 19.
Part no.
1165066 (AUS)
1165166 (EU)
1165266 (GB)
1165366 (USA/CDN)
Miscellaneous
Besides the parts included with the ML/MCL Converter, the installation
requires a Master Link cable as well as plugs, sockets and junction boxes
(see the section on installation types, page 23).
MASTER LINK
11
SETUPS
Recommended setups
An object consisting of several parts can usually only be assembled in one
way if the intended result is to be achieved. For example, a gearbox for a
car will not perform optimally according to the specifications if you omit
installing some of the gearwheels. If you manage to install one gearwheel
too many, that will most likely cause trouble as well.
The point of the above is that things must be put together in the way
they were designed to, if they are to perform optimally.
The same applies to Bang & Olufsen’s BeoLink. In theory, Bang &
Olufsen’s products may be connected in thousands of different ways.
Since it would be totally impossible to have an overview of just a fraction
of this multitude of connection possibilities, Bang & Olufsen has selected
the most attractive combinations. These selected combinations are called
recommended setups. The recommended setups are the ones which are
focused on in connection with product development and service.
When a BeoLink system is configured it is therefore very important that
this is done in accordance with the recommended setups.
If the recommended setups are not followed, the result may easily be the
same as with the gearbox with too many or too few gearwheels.
Bang & Olufsen services the recommended setups ONLY.
Option programming
One of the conditions for the recommended setups to perform optimally
is that the products included in the setup “know” in what kind of
environment they are placed.
The actual option programming is executed by pressing a certain
sequence of keys on the terminal.
For the Beo4 terminal the key sequence is the following:
Press and hold
then
Press to access the setup function. The Beo4 display reads
[OPTION?] - let go of both buttons
Press to access Option-programming
Press to display [V.OPT] BeoVision, or
[A.OPT] Beomaster/BeoSound, or
[L.OPT] link room products
then
Key in the number of the appropriate Option, e.g. 1
12
MASTER LINK
For the Beolink 1000 terminal the key sequence is the following:
Beovision:
“digit”
Beomaster/BeoSound:
“digit”
Link room products:
“digit”
The digit sequence to be used depends on the setup.
Option 0
Option 1
Option 2
Option 4
=
=
=
=
No IR reception
Two IR-eyes in the same main room
One IR-eye in the main room
Link room product connected to one or two main room
products in the same room
Option 5 = Two IR-eyes in the same link room
Option 6 = One IR-eye in the link room
It applies to most setups that they are delivered with the correct option
setting from the factory, and they are thus “ready for use”.
However, since in some situations you may have to work with products
that have been installed before, e.g. in connection with a house that has
been rebuilt, the correct option is indicated at ALL illustrations, even
those which are “ready for use” from the factory.
NOTE!
If the option programming is not executed
correctly, a malfunction will occur.
13
MASTER LINK
Recommended
main room setups
Audio system in one room
Option programming BeoSound
Factory setting BeoSound
: Ready for use
: Option 1
Video system in one room
Option programming BeoVision
Factory setting BeoVision
: Ready for use
: Option 1
AV system in one room
1.
Option programming BeoVision
Factory setting BeoVision
: Ready for use
: Option 1
Option programming BeoSound
Factory setting BeoSound
: Ready for use
: Option 1
2.
Option programming BeoVision
Factory setting BeoVision
: Option 2
: Option 1
Option programming BeoSound
Factory setting BeoSound
: Option 0
: Option 1
AV system in two rooms
Option programming BeoVision
Factory setting BeoVision
: Option 2
: Option 1
Option programming BeoSound
Factory setting BeoSound
: Option 2
: Option 1
14
MASTER LINK
Recommended setups for one
product in the link room
BeoLab 3500
Option programming
Factory setting
: Ready for use
: Option 6
BeoLab 2000
Option programming
Factory setting
: Ready for use
: Option 6
BeoVision MX 4002
Master Link
Option programming
Factory setting
: Ready for use
: Option 6
Coaxial
BeoLink Active
Option programming
Factory setting
Master Link
: Ready for use
: Option 6
BeoLink Passive
Option programming
Factory setting
: Ready for use
: Option 6
15
MASTER LINK
BeoVision Avant
Master Link
Option programming BeoVision
Factory setting BeoVision
: Option 6
: Option 1
Coaxial
BeoSound Ouverture
Master Link
Option programming BeoSound
Factory setting BeoSound
: Option 6
: Option 1
BeoLink Video
Master Link
BeoLink
Video
Datalink
Option programming BeoVision
Factory setting BeoVision
Coaxial
NOTE!
Option and setups for a BeoVision connected
to BeoLink Video, see Bang & Olufsen's
Product Configuration Guide.
: Option 6
: Option 1
16
MASTER LINK
Recommended setups for one
Audio and one Video product in
the link room
Master Link
Coaxial
Master
Link
Audio*
Video**
*NOTE!
Valid for all Audio
link room products.
**NOTE!
Valid for Video link
room products incl.
BeoLink Video.
Master Link
Master
Link
Coaxial
1.
Option programming BeoLab/BeoLink
Factory setting BeoLab/BeoLink
: Option 5
: option 6
Option programming BeoVision MX 4002 : Option 5
Factory setting BeoVision MX 4002
: Option 6
NOTE!
Option and setups for a BeoVision connected
to BeoLink Video, see Bang & Olufsen's
Product Configuration Guide.
2.
Option programming BeoSound
Factory setting BeoSound
: Option 5
: Option 1
Option programming BeoVision Avant
Factory setting BeoVision Avant
: Option 5
: Option 1
17
MASTER LINK
Recommended compatibility
setups
Master Link
Master
Link
BeoLink
Converter
Compatibility between products with Master Link connection and Audio
Aux Link (datalink) connection or Master Control Link connection.
One room setup
1.
Option programming BeoVision
Factory setting BeoVision
: Option 2
: Option 1
Option programming Beomaster
Factory setting Beomaster
: Option 0
: Option 1
2.
Option programming BeoVision
Factory setting BeoVision
: Ready for use
: Option 1
Option programming BeoSound
Factory setting BeoSound
: Ready for use
: Option 1
3.
Option programming BeoVision
Factory setting BeoVision
: Ready for use
: Option 1
Option programming Beomaster
Factory setting Beomaster
: Ready for use
: Option 1
4.
Option programming
Factory setting
: Ready for use
: Option 1
5.
Option programming BeoVision
Factory setting BeoVision
: Ready for use
: Option 1
Option programming BeoSound
Factory setting BeoSound
: Ready for use
: Option 1
Datalink
Master Link
BeoLink
Converter
Datalink
Master Link
BeoLink
Converter
Datalink
Datalink
AUXT-branch
NOTE!
Information as to which Beomasters and
BeoVisions can be connected to BeoLink
Converter, see Bang & Olufsen's Product
Configuration Guide.
18
MASTER LINK
Two room setup
1.
Option programming BeoVision
Factory setting BeoVision
: Option 2
: Option 1
Option programming BeoSound
Factory setting BeoSound
: Option 2
: Option 1
2.
Option programming BeoVision
Factory setting BeoVision
: Option 2
: Option 1
Option programming Beomaster
Factory setting Beomaster
: Option 2
: Option 1
NOTE!
Information as to which Beomasters and
BeoVisions can be connected to BeoLink
Converter, see Bang & Olufsen's Product
Configuration Guide.
19
MASTER LINK
Setups with ML / MCL Converter
This product is used where the customer wishes to maintain his current
MCL system and to replace the audio system in the main room with a
Master Link driver.
The ML/MCL Converter can be connected to all recommended MCL link
room setups, see the Master Control Link Handbook.
MCL
Master Link
BeoLink
Video
Datalink
1.
Option programming BeoSound
Factory setting BeoSound
: Ready for use
: Option 1
2.
Option programming BeoVision
Factory setting BeoVision
: Ready for use
: Option 1
Option programming BeoSound
Factory setting BeoSound
: Ready for use
: Option 1
3.
Option programming BeoVision
Factory setting BeoVision
: Ready for use
: Option 1
Option programming BeoSound
Factory setting BeoSound
: Ready for use
: Option 1
Master
Link
20
MASTER LINK
Special setups
Further to the recommended setups, there are two additional combinations. The reason why they are not mentioned under recommended
setups is that they do not fully live up to Bang & Olufsen’s own standards
as regards operating simplicity. They have been included anyway, because
in some situations they might be appropriate, and they will always permit
operation of the basic functions such as source selection (radio, CD,
a.tape, etc.), source control (fast forward and rewind, step, selection of a
certain track, etc.) and volume control.
Link room products or link
room kits in the main room.
If an additional listening area is required in the main room, e.g. if it is an
L-shaped room, it is possible to operate it without activating the listening
area by the AV system (the speakers connected to the centrally placed
audio system), it is possible to install link room products and link room
kits in the main room.
Option programming link room product
: Option 4
Audio/video system
: See main room setups
Note:
- The AV system is operated in the ordinary
way.
- The extra listening area will only
understand information from the terminal
if the LINK key is actuated prior to a source
selection (CD, radio, a.tape, etc. )
MASTER LINK
21
Moreover, option 4 can be used if the link room and the main room are
located in such a way that both rooms will be operated simultaneously.
By setting the link room to option 4, the room can be operated
independently of the main room, because the link room will only accept
information from the terminal if the LINK key has been actuated.
NOTE!
The BeoLink Video cannot be set to option 4!
All link room products and link room kits with Master Link connection,
with the exception of BeoLink Video, can be incorporated into this special
setup.
NOTE!
The Beolab 3500 S/W version must be 1.1 or
higher
22
MASTER LINK
DIMENSIONING
Max. 400m ML Cable
It is possible to interconnect 16 Master Link products, including the main
room products, in one system, and a maximum of 400 m of Master Link
cable may be used.
The cable between the receiver and BeoLink Active/Passive may not
exceed 5 m.
5 m is included from the factory.
A special 15 m low capacity receiver cable can be ordered,
part no. 6270668.
MASTER LINK
23
INSTALLATION TYPES
The following section gives a brief introduction to two typical installation
types, namely the visible and the invisible installation. The examples
include various applications of Bang & Olufsen’s installation accessories,
which are shown at the end of the handbook.
The illustrations give only a few installation examples. There are many
alternatives, of course.
Visible installation
A visible installation is used where it is not possible to hide cable and
installation materials in the attic and/or in conduits in the wall.
In this example the following has been used:
1.
2.
3.
4.
5.
4 x Master Link cable with one plug
Master Link cable without plugs
2 x Master Link junction box
1 x BeoLink Video
1 x datalink cable (included with BeoLink Video)
Invisible installation
This type of installation makes it possible to hide the cables and
installation materials in the wall and/or in the attic.
In this example the following has been used:
1.
2.
3.
4.
5.
6.
4 x Master Link cable with two plugs
Master Link cable without plugs
4 x Master Link wall socket
1 x Master Link junction box
1 x BeoLink Video
1 x datalink cable (included with BeoLink Video)
24
MASTER LINK
Another type of invisible installation is shown below. This installation can
be made for example in apartments with no access to the attic or
basement.
In this example the following has been used:
1.
2.
3.
4.
5.
4 x Master Link cable with two plugs
Master Link cable without plugs
4 x Master Link wall socket
1 x datalink cable (included with BeoLink Video)
1 x BeoLink Video
Aerial installation
Aerial installation with built-in splitter.
Aerial installation with external splitter.
MASTER LINK
Build-in kit for IR-eye
25
The build-in kit for IR-eye is used for invisible installations.
There are two different build-in kits.
One for solid walls (part no. 3375187), which contains a fixture box, a
spacer piece, a plastic cover (to close the box under construction) and an
ornamental ring.
The other kit is for light partition walls (part no. 3375188) and contains
two brackets and an ornamental ring.
26
MASTER LINK
INSTALLATION TIPS
Placing of receiver
The receiver must be placed so that nothing prevents it from receiving the
signals from a Bang & Olufsen remote control.
When deciding on the position of the receiver, remember that it should
not be possible to activate more than one receiver at a time using a
remote control terminal.
The diagram shows that receiver 3 is placed appropriately, whereas
receiver 1 can be activated from room 2. Receiver 1 should be placed as
receiver 2 instead.
The receiver should not be placed in direct sunlight or direct artificial
light ( e.g. spotlight) or near objects producing electric noise (e.g.
dimmers) as this reduces the sensitivity of the receiver (shorter range).
If the receiver is placed outdoors, please note that it does not function at
temperatures above 55ºC or below 0ºC. If higher or lower temperatures
may occur, it should be possible to switch it off by means of a switch.
Otherwise it can block the operation of the whole system.
It might be a good idea to place the receiver next to a door so that it is
easy for the person entering or leaving the room to operate it.
It might also be an advantage to place the receiver close to the telephone
so that the speakers can easily be muted by the person talking on the
phone.
Placing of control box
The control box need not be placed in the same room as the receiver, but
may be placed in the attic, for example. Please, note that temperatures
may not be above 55ºC or below 0ºC.
MASTER LINK
27
Use of Master Link junction box:
1.
Length-adjustment of cable, e.g. from 10 m to 8.5 m.
2.
Colour-change of cable.
For aesthetical reasons all ML cables with plugs are available in the colour
black only. When making visible installations it may be necessary to use a
grey cable which can easily be connected via the junction box.
3.
Connections between products.
Max. 4 ML cables in one junction box.
28
MASTER LINK
Central placing of BeoLink boxes
BeoLink Passive
BeoLink Active
Cupboard or basement or attic
BeoLink Video
As appears from the illustration, BeoLink boxes can be placed in a central
location. (However, maximum cable lengths may not be exceeded, and
the same applies to maximum and minimum ambient temperatures. See
the sections 'Dimensioning', page 22, and 'Placing of control box',
page 26, for further information).
Possible advantages of a central placing could be that the BeoLink units
are easier to hide, BeoLink boxes can use a joint current output, etc.
The BeoLink boxes are designed to function within a temperature range of
10 – 40°C.
29
MASTER LINK
TECHNICAL DESCRIPTION
The following section contains a brief description of the cabling most
often used in connection with a BeoLink installation.
Pictures (satellite, video tape recorder and ordinary TV broadcasts) are
distributed through a 75 ohm coaxial cable.
Regarding part nos., see 'Accessories', page 39.

Master Link cable
Pin no. in the Master
Link socket
1
2
3
4-10
11
12
13
14
15
16
Screen
‚
Cable colour
Function
white/green (WH/GN)
green (GN)
white/blue (WH/BL)
data data +
ML-sense
N.C.
- supply voltage
+ supply voltage
-L
+L
-R
+R
Ground
blue (BL)
pink (PI)
white/orange (WH/OR)
orange (OR)
white/red (WH/RD)
red (RD)
3 x solid wire
Power Link cable with wire for display data.
pin 1
pin 2
pin 3
pin 4
pin 5
pin 6
pin 7
pin 8
=
=
=
=
=
=
=
=
grey =
shield =
brown =
yellow =
green =
white =
shield =
pink =
power up/down
ground
signal, left channel
loudspeaker relay
signal, right channel
Datalink
ground
overload
30
ƒ
MASTER LINK
Power Link cable without wire for display data
pin 2
pin 3
pin 4
pin 5
„
17
15
13
20
18
16
14
12
11
10
9
8
7
6
5
4
3
2
1
…
1
2
3
6
4
15
13
11
9
7
5
16
18
20
17
19
8
21
10
12
14
2
1
6
3
4
15
13
11
9
7
5
16
17
19
18
20
8
21
10
12
14
pin 1 =
pin 2 =
pin 3 =
pin 4 =
pin 5 =
pin 6 =
pin 7 =
pin 8 =
pin 9 =
pin 10 =
pin 11 =
pin 12 =
pin 13 =
pin 14 =
pin 15 =
pin 16 =
pin 17 =
pin 18 =
pin 19 =
pin 20 =
pin 21 =
ground
signal, left channel
loudspeaker on
signal, right channel
audio out, right channel
audio in, right channel
audio out, left channel
audio ground
blue ground
audio in, left channel
blue signal (C out)
12 V sense and Datalink
green ground
data 2
green signal
data 1
red ground
fast blanking, ground
red signal (C in)
fast blanking
video out, ground
video in, ground
video out, signal (Y out)
video in, signal (Y in)
shield, ground
Datalink cable
pin 1
pin 2
pin 3
pin 4
pin 5
pin 6
pin 7
†
shield =
brown =
yellow =
green =
21-pin A/V cable with RGB connection:
21
19
=
=
=
=
Coaxial cable
Regarding coaxial cable for aerial
installation, see the section on
aerial installation, page 24.
= yellow
= shield
= blue
= red
= green
= black
= white
= output, left channel
= signal ground
= input, left channel
= output, right channel
= input, right channel
= data ground
= datalink
31
MASTER LINK
‡
Receiver cable
1
2
3
4
5
1
2
3
4
5
=
=
=
=
=
Yellow
Grey
Green
White
Brown
NOTE!
Disconnect your entire Bang & Olufsen
system from the mains while you make the
connections!
32
MASTER LINK
TROUBLESHOOTING GUIDE
Master Link products,
e.g. BeoLab 3500
When carrying out troubleshooting on a Master Link installation, the first
thing to do is to apply the method of exclusion. First disconnect the main
room and the link room, one at a time, to ascertain whether the fault is in
the main room or in the link room. Then disconnect the individual
products, one at a time, until the faulty product or the faulty connection
has been found.
Simple measurements on the Master Link can be made by means of a
voltmeter or an oscilloscope. All listed specifications are measured to
ground.
The following specifications apply to Master Link:
Pin no. in
the Master
Link socket
Cable colour
Function
Specification
1
2
3
4 - 10
11
white/green
green
white/blue
-0.25 V ± 0.1 V
+0.25 V ± 0.1 V
blue
data data+
ML-sense
no connection
- supply voltage
12
pink
+supply voltage
13
white/orange
audio -L
14
orange
audio +L
15
white/red
audio -R
16
red
audio +R
Screen
Ground
(N.C.)
-7 V to -15V
in standby -3V to -15V
+7 V to +15 V
in standby +3V to +15V
1 V Bal
Rin 2.2 Mohm,
Rout 75 ohm
1 V Bal
Rin 2.2 Mohm,
Rout 75 ohm
1 V Bal
Rin 2.2 Mohm,
Rout 75 ohm
1 V Bal
Rin 2.2 Mohm,
Rout 75 ohm
3 x solid wire
The data speed is 19,200 bits/sec.
By way of comparison, the data speed for the Master Control Link is
160 bits/sec.
MASTER LINK
Trouble
No sound and no operation
33
Possible cause
The product is connected to the mains and the stand-by diode is on.
If the above is OK, do as follows:
-
Meter data+ (pin 2) relative to ground
Meter data- (pin 1) relative to ground
Where no transmission, +/- 200 to 300 mV should be metered.
When data is being transmitted, 0V should be metered.
Measurement with oscilloscope.
Meter the following:
No transmission
———————————— + 0.25
———————————— 0
———————————— -0.25
Transmission
If data- and data+ are not as shown at “No transmission” and are unable
to transmit, the fault may be in the main room’s BeoVision or BeoSound,
since it is one of these two units that supplies this voltage.
Please note that in setups with a BeoLink Converter it is always the
Master Link driver that supplies the voltage. If there are two Master Link
drivers, one of them will, when connected, configure itself as being the
one that supplies the data voltage.
The fault is found by applying the method of exclusion. If the fault is not
in one of the Master Link drivers, there is another product that pulls data
low or high respectively. Alternatively there could be a cable fault or a
connection fault. Data errors can also be displayed in service mode; see
the section on service mode.
If data is OK, proceed with the measurement of the supply voltage which
should be as stated under the specifications. If the voltage is not OK,
apply the method of exclusion until the faulty product or the faulty
connection has been found.
No sound but operation OK
The data and supply voltages are in this case OK. Meter the signal levels
at pins 13 to 16 in relation to the stated specifications. If the signal levels
are OK, the fault is in the link room product, perhaps in the converter
box, or it may be a faulty cable or connection.
Play only at half volume
One of the balanced audio signals has dropped out.
34
Service mode
MASTER LINK
Products with a display feature a service mode in which Master Link faults
can be displayed. Please note that the error reading indicates that the
fault is a system fault, which does not mean that the fault is in the
particular product that is displaying it.
Beolab 3500 and BeoVision Avant are examples of products providing the
service mode feature. Check the service manual for the individual
products to see how these procedures are accessed.
This example of service mode is from Beolab 3500.
ERROR 1:
-
Address configuration is impossible.
Error during address configuration. No address has been allocated
because too many units are connected to the Master Link.
- Remove all products from Master Link, and connect them again one at
a time until the error code occurs. Disconnect that product from Master
Link.
ERROR 2:
-
Master Link data pulled low
It is not possible to transmit on Master Link, because it has been pulled
low. The error may occur if there is no Master Link driver circuit, or as a
result of a physical short-circuit on Master Link or in the data transceiver
circuits.
- Disconnect one product from Master Link at a time, and see if it starts
up.
- Reset the faulty product, and check the connection (cable/plug) and
signal path (the data transceiver circuit). See repair tips for the data
transceiver circuit.
ERROR 3:
-
Master Link data pulled high.
It is not possible to transmit on Master Link, because it has been pulled
high. This error is caused either by the pull-up resistance in the system
having become too small or by an error in the data transceiver circuit.
- Disconnect one product from Master Link at a time, and see if it starts
up.
- Reset the faulty product, check whether the Master Link cable is too
long, and check the signal path (the data transceiver circuit). See repair
tips for the Master Link data transceiver circuit.
ERROR 4:
-
Data collision on Master Link
The data traffic on Master Link has been excessive, or a product has
jammed and will not receive data telegrams.
- Press the operating sequence again.
- Disconnect one product from Master Link at a time to determine which
product has jammed. Reset the faulty product, and check the Master
Link connection (cable/plug) and signal path (amplifiers in the data
transceiver circuit).
See the service manual for the individual products for further
information.
MASTER LINK
35
GLOSSARY
Audio Aux Link
Perhaps better known as AV connection . Connection between the audio
and video systems. The connection is established through a 7-pin datalink
cable.
21-pin AV cable / SCART
Standard connection between a TV set and a video tape recorder. The
cable is specified for transferring RGB signals.
AV system
Audio/video system. Integration of audio and video, permitting sound to
be transferred from one system to the other.
BeoLink
The brand name and a general term describing Bang & Olufsen’s way of
distributing sound and picture. BeoLink may be obtained in different
ways depending on the products used: either the Audio Aux Link/Master
Control Link (MCL) system or the Master Link system.
Beomaster
Designation of audio masters, e.g. Beomaster 7000 and Beocenter 9500.
In future this designation will be replaced by BeoSound.
BeoSound
Common designation of audio products, e.g. BeoSound Ouverture.
BeoVision
Common designation of TV sets, e.g. Beovision MX 6000 and BeoVision
Avant.
Compatibility
The ability to interconnect products from different seasons.
Control box
A box that controls data and signals, for example in BeoLink Active.
Datalink cable
7-pin datalink cable used for Audio Aux Link connection between audio
and video systems.
Link room
Designation of the other room/rooms in the home in which sound and/or
picture are installed.
Link room kits
Kits specially designed for link rooms, e.g. BeoLink Active and BeoLink
Video.
Link room products
Products specially designed for link rooms, e.g. Beolab 3500.
Main room
Designation of the room in which the audio and/or video systems are
placed. There are two kinds of main rooms
ONE-room = audio and video systems placed in the same room
TWO-room = audio and video systems placed in separate rooms.
Main room products
Products which serve as driver in a BeoLink system, e.g. BeoVision and
BeoSound.
36
MASTER LINK
Master Control Link (MCL)
Master Control Link is the name of the former connection between main
room and link room.
Master Link (ML)
Bang & Olufsen’s new systems interface. Master Link is the connection
between the products in the main room and those in the link room but it
is also the connection between the audio system and the video system.
Master Link driver
BeoSound and BeoVision with Master Link socket. One of these products
is always required in a Master Link setup.
Master Link product
All products with a Master Link socket.
One-way remote control
A remote control terminal that operates the products by transmitting a
command to them without requiring an answer (e.g. BL 1000 and Beo4).
BL 5000 and BL 7000 are two-way remote control terminals which require
an answer from the product being operated.
Option programming
Option programming is executed via a Bang & Olufsen terminal and with
the products concerned in stand-by.
Upon completed option programming, the products “know” what kind of
environment they are placed in, and they can then be operated and
function optimally.
Power Link (PL)
The Power Link connection contains all necessary signals and data
required for driving active speakers. Two different types of cable are
available: one with wire for display data and one without wire for display
data. Note that the latter cannot be used for active speakers with display.
Product Configuration Guide (PCG)
A PC-based tool in which it is possible to compose the setup you want and
which provides answers to any questions concerning compatibility, setups,
options, terminals, special conditions, and much more.
Receiver
IR receiver built into video, audio and link products. The products can
thus be operated by means of a one-way remote control terminal, e.g.
Beolink 1000 and Beo4.
MASTER LINK
Notes :
37
38
MASTER LINK
MASTER LINK
Notes :
45
46
Notes :
MASTER LINK
MASTER LINK
TELEPHONE 96841122*
CABLE ADDRESS BANGOLUF
TELEFAX 97853911
3540230
04-97
B
PRINTED IN DENMARK BY BOGTRYKKERGÅRDEN AS, STRUER
BANG & OLUFSEN
DK - 7600 STRUER
DENMARK
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