a2b MyM 3T User manual

User manual MyM DVB-3T , rev D eng Page 1
English
MyM 3T
User Manual
•NICAM or A2 stereo
•12-volt power supply
•Low power consumption
•Compact unit with 2 DVB-T tuners
•MPEG-2 and MPEG-4 compliant
•3 analogue modulators
•Two CI for decryption or multidecryption

User manual MyM DVB-3T , rev D eng Page 2
1Contents
1 Contents ...................................................................................................... 2
2 Unpacking Your MyM......................................................................................... 2
3 Introduction .................................................................................................. 3
4 Information about digital terrestrial television ......................................................... 3
5 Installation Part one ........................................................................................ 4
6 Connectors and buttons .................................................................................... 4
7 Installation Part two ........................................................................................ 5
7.1 Connection to one TV ....................................................................................... 5
7.2 Connection to a Cable network ............................................................................ 5
7.3 Automatic installation and channel search .............................................................. 6
7.4 TV channel search ........................................................................................... 6
8 Menu settings................................................................................................. 7
8.1 Basic settings ................................................................................................. 7
8.1.1. Information ................................................................................................. 7
8.1.2 Choosing channels (Channel 1, 2,3) ..................................................................... 7
8.1.3 Channel search ............................................................................................. 7
8.1.4 National...................................................................................................... 8
8.1.5 National – Subtitling ....................................................................................... 8
8.1.6 National – Audio language................................................................................. 9
8.1.7 National – Menu language ................................................................................. 9
8.2 Advanced settings ........................................................................................... 9
8.2.1 Aspect ratio (Picture format)............................................................................10
8.2.2 Output channels ...........................................................................................10
8.2.3 Quality ......................................................................................................10
8.2.5 Channel indicator .........................................................................................11
8.2.6 Output audio type.........................................................................................11
8.2.6.1 TV System for audio ....................................................................................12
8.2.7 Loopthrough................................................................................................12
8.2.8 CI 1 and CI 2 ...............................................................................................12
9 Multiple installation and Factory reset ................................................................13
9.1 Installation of multiple MyM’s............................................................................13
9.2 Connecting a Set-Top-Box with the MyM ...............................................................13
10 Support and trouble-shooting.............................................................................14
10.1 Trouble-shooting ...........................................................................................14
11 Technical specification ....................................................................................15
12 Declaration of Conformity.................................................................................16
2 Unpacking Your MyM
When unpacking the carton following items should be included.
1. MyM
2. Power adaptor
3. User Manual

User manual MyM DVB-3T , rev D eng Page 3
3 Introduction
Thank you for purchasing the MyM Micro Master, a quality product developed and
manufactured by A2B Electronics.
The MyM is a unique solution that allows you to watch digital television on all your
TV sets. The MyM receives all terrestrial digital programs, and re-transmits 3
programs simultaneously to all your TV’s.
This User Manual describes how to install and connect your MyM quickly and easily .
In the unlikely event that you experience any difficulties please refer to Chapter
10, Support and Trouble Shooting.
4 Information about digital terrestrial television
Today there are digital terrestrial channels available, both free to air and
encrypted channels.
The terrestrial digital channels are transmitted in muxes. A mux (or multiplex) is a
package of channels that are transmitted on the same frequency. Each mux
normally contains between 4 and 7 channels. Frequently a mux will contain both
free to air and pay TV channels.
The MyM receives transmissions from 2 muxes, and re-transmits 3 of the digital
channels in analogue with Nicam or A2 stereo to all connected receivers (TV’s,
VCR’s etc.) in the cable TV network. There is also a loop through of the digital
muxes, which makes it possible to connect a Set Top Box (STB) after the MyM.
Kommentar [ DS1] : need to
consider whether to have a
generic support site in English
with links to each country site
– or delete the reference to
the multibox.se

User manual MyM DVB-3T , rev D eng Page 4
5Installation Part one
The MyM should be mounted correctly to ensure excellent performance over a long
period of time.
Please note that it is important to mount the MyM vertically for correct airflow.
Attach the MyM to a suitable surface using the holes on the back side. There is also
a wall mount plate that can be used together with a padlock for protection of the
CA modules.
Install the MyM for easiest connection of the cables. If the MyM is installed in the
attic, mount it close to the aerial. Also, make sure you have a 230V AC power
outlet. For more information about how to install the MyM please refer to Chapter
7 Installation.
6Connectors and buttons
Connectors and buttons
1. Aerial in
2. Antenna loop through
3. TV out
4. DC-power (12 V)
5. RJ-45 for updates 1)
6. LCD operation indicator
7. Arrow up for menu navigation
8. Arrow down for menu navigation
9. OK button for showing menus and
for menu choice
1) See www.a2b.se f or inf ormat ion about new sof t war e.
1
2
3
4
5
6 7
8
9
Kommentar [ DS2] : need to
consider whether to have a
generic support site in English
with links to each country site
– or delete the reference to
the multibox.se

User manual MyM DVB-3T , rev D eng Page 5
7Installation Part two
7.1 Connect ion t o one T V
If you only want to connect one TV, or one TV combined with a VCR / PVR, the
most straight-forward installation is to mount the MyM on the wall close to the TV.
1. Connect the aerial cable to the aerial
input on the MyM
2Connect the one end of a RF cable to
the RF output on the MyM, and connect
the other end to the aerial in socket on
your TV.
3Connect the power adaptor (only use
the adaptor delivered with the MyM).
4The MyM will now start an automatic
channel search. When the channel
search is finished the LED on the MyM
will turn red or green ( depending on if
the selected services are encoded or
not). You now have to do a channel search on your TV to get the 3 channels
from the MyM. See Chapter 7.3 Automatic installation and channel search,
for more information.
Not e! Do not use any ot her t he power adapt or t han t he or iginal one wit h t he MyM.
7. 2 Connect ion t o a Cable net work
The MyM should be connected close to the aerial, before the signals are split to the
cable network.
If there is an amplifier connected to the
splitter you should first try to install
the MyM without the amplifier, because
the MyM has an embedded amplifier.
If there are long cables in the cable
network, an amplifier can be needed
and should then be connected after the
MyM.
1
2
3
Splitter
MyM
TV TV
TV TV

User manual MyM DVB-3T , rev D eng Page 6
7. 3 Aut omat ic inst allat ion and channel search
The MyM will automatically start a channel search when it is connected to a TV
aerial and the power adaptor is connected. The MyM will search for the strongest
transmissions, and after that it will start transmitting three channels according to
the table below:
Channel Frequency
S11 231,25 MHz
S13 245,25 MHz
S15 259,25 MHz
The channel search takes about 60 seconds. When the channel search is complete,
the LED on the MyM will turn to red or green depending on if found channels are
FTA or encrypted services.
NOT E! In normal operat ion t he LED f lashes green.
7. 4 TV channel search
Once the channel search on the MyM is complete you will
need to do a channel search on all TV’s and VCR’s in the
cable network. Many TV sets have an automatic channel
search facility - for more information please refer to the
TV and VCR User Manuals. Channels coming from the MyM
will be highlighted by a text box with “MyM 1”, “MyM 2”
and “MyM 3” in the upper right corner. This text box will
disappear automatically after 8 hours. You can also
remove the text box manually via the menu system of the
MyM, see Chapter 8 Menu settings, for more information.
If you need help to install your MyM, please contact your local dealer/installer. You
can also visit our web site for more information: www.a2b.se
LED

User manual MyM DVB-3T , rev D eng Page 7
8Menu settings
The MyM has a menu system for changing
settings and functionality. The menus are shown
on the TV screen. Press the OK button on the MyM
(see Chapter 6 Connectors and buttons) to display
the menus. The picture to the right shows the
main menu. Use the arrow up and arrow down
buttons on the MyM to navigate the menus. Exit
the menu by moving the indicator to “Return” and
then press the OK button on the MyM.
8. 1 Basic set t ings
In the basic settings you can find information about your MyM, choose what
programs are transmitted by the MyM and/or start a new channel search.
8.1.1. Information
The information box displays the hardware
version and the software version of your MyM.
It also displays the serial number of your
MyM.
8. 1. 2 Choosing channels (Channel 1, 2,3)
This menu is used for selecting which digital
television channels are transmitted by the MyM on
Channels 1, 2 and 3.
Move the indicator (using the arrow buttons
on the MyM) to the Channel you want to
change.
NOTE! There could be more channels t han
you can see in t he window. Scroll up or
down t o see all channels
Press the OK button on the MyM to show all
the digital television channels.
Select the digital television channel and
press the OK button again.
8. 1. 3 Channel search
The first time the MyM is installed it will do an
automatic channel search to tune in all available
digital channels. This menu can be used for

User manual MyM DVB-3T , rev D eng Page 8
starting a new channel search, for example if you take the MyM to a new location.
Connect the TV aerial before starting the channel search. To follow the channel
search process tune a TV to channel S11 (231,25 MHz). During the channel search
all the signals that come from the aerial are shown at the bottom of the screen by
individual channels (frequencies) and signal strength. The digital muxes have green
indicators. Other signals have blue indicators. Please refer to Chapter 8.2 Advanced
Installation, for more information about signal quality and how to how to adjust
the TV aerial.
All the channels that are received and identified are
displayed in the background.
8.1.4 National
This menu is used to change the country settings. You can
choose your preferences for Subtitling, Audio language,
and Menu language.
8. 1. 5 Nat ional – Subt it ling
Use this menu to set your preferences for subtitling. It is
possible to set the type of subtitling, choose the subtitle
language and select between DVB or teletext subtitling,
select Auto Conversion and set the teletext character set.
This menu can also be used to switch subtitling off (None).
8. 1.5. 1 Type
Use this menu to choose between normal subtitling or
special subtitling for the hearing impaired. This offers
enlarged subtitles and colour coded text. Alternatively all
the subtitling can be switched off. The MyM is preset to
“Normal”.
8. 1.5. 2 Language
In this menu you select what language that should be used
for subtitling.
NOTE! There are more choices t han you can see in t he
window. Scroll up or down t o see all choices.
Kommentar [ DS3] : Is this
correct if the Auto Mux search
option is switched on?

User manual MyM DVB-3T , rev D eng Page 9
8. 1. 5. 3 Pr iorit y
Subtitling can be transmitted in different formats; via
“Teletext subtitling” or “DVB subtitling”. The format is
automatically selected by the MyM. Sometimes both
formats are transmitted and the MyM then automatically
chooses the format according to the priority set here.
8. 1. 5. 4 Aut o conversion
If Aspect ratio is 16:9 and some of the subtitling is out of
the image area you can get all text within the image area
by select “On” for Auto conversion.
8. 1. 6 Nat ional – Audio language
This menu is used to set your preference for audio
language, when a TV program is broadcast in more than
one language.
8. 1. 7 Nat ional – Menu language
This menu is used to set your preference for the language
used in all menus in the MyM.
8.2 Advanced set t ings
In the advanced settings menu you will find settings for
Aspect ratio, Output channels, Quality, Channel indicator,
Output audio type, Loopthrough, CI1 and CI2.

User manual MyM DVB-3T , rev D eng Page 10
8. 2. 1 Aspect rat io (Pict ure f ormat )
The picture format can be set to 4:3 or 16:9 (Widescreen).
If the main TV is 4:3 choose 4:3 to watch 4:3 programs in
full screen and widescreen programmes (16:9) in the
letterbox format where the full width of the picture is
shown and the top and bottom of the picture are black.
Choose 16:9 if the main TV is widescreen to watch 16:9
programmes in full screen.
8.2.2 Output channels
Use this menu to choose the output frequencies for the
MyM. After automatic installation you will find the preset
channels on VHF output at channels S11, S13 and S15
respectively. This menu allows you to choose between VHF
(S10 to S41) or UHF (E21 to E69) as output channels.
8.2.3 Qualit y
This menu is used to test the signal quality and the aerial
reception quality. It may be necessary to adjust or upgrade
the TV aerial to ensure good picture and sound on all
channels. For more information see Chapter 8.2.3.1
Reception.
The MyM has an inbuilt spectrum analyser to help optimise
the aerial installation. For more information see Chapter
8.2.3.2 Antenna Quality.
8. 2.3. 1 Reception
Use this menu to measure the reception quality of each
channel. If these are not optimal it is possible that the
picture and sound quality will deteriorate in poor reception
conditions and it may be necessary to adjust the aerial.
The information refers to the 2 installed muxes for the 3
channels.

User manual MyM DVB-3T , rev D eng Page 11
The menu shows the channels numbers and frequencies of the 2 installed muxes.
Good reception quality requires a strong incoming signal. For more information on
the optimal signal strength see Chapter 8.2.3.2 Antenna Signal. It may be necessary
to adjust the aerial for optimal signal strength. The signal quality C/N (Carrier to
Noise) value is a measurement of the relationship between the aerial signal and
disturbance in the channel. This should be higher than 20 dB. The BER (Bit Error
Rate) measures the ratio of the number of faulty bits received to the total number
of bits received. The BER should be as low as possible and less than 2.00E-4 (2*10-4)
to ensure good quality picture and sound.
If all the parameters for the incoming signal are good but there are still problems
with the picture or sound quality it is likely that there is a problem with the cable
that connects the TV / VCR to the MyM.
8. 2. 3. 2 Ant enna qualit y
The MyM has an inbuilt spectrum analyser. This
shows the level of the incoming signals on the VHF
and UHF band (47 to 862 MHz). The picture to the
right shows the signal level of the incoming
channels. The two chosen muxes for the installed
channels are green. The recommended level for the
incoming channels is between 35 dBμV and 75 dBμV
(between the 2 red horizontal lines).
Check that the green columns are between the 2 red horizontal lines. If not it may
be necessary to adjust or upgrade the TV aerial.
8.2. 5 Channel indicat or
The MyM Channel indicator can be switched On or
Off. When the channel indicator is On, a text box
with ”MyM 1”, “MyM 2” and “MyM 3” will be shown in
the upper right corner of the picture on the three
output RF channels. After installation, channel
indicators is automatically switched on for 8 hours to
make it easier to do a channel search on the TV’s.
During normal operation, the channel indicator is Off.
8. 2. 6 Out put audio t ype
In this menu it’s possible to choose between different
Audio types like Nicam, A2 or A2*.

User manual MyM DVB-3T , rev D eng Page 12
8. 2. 6. 1 T V Syst em f or audio
Here you select which TV system
that will be selected for the sound.
Most common in Western Europe is
B/G.
8. 2. 7 Loopt hrough
In this menu you can choose whether you want the
antenna signals to pass through the MyM. If you select
mode "On" then the FM, VHF and UHF band to be
imported and thus these signals will be available in the
antenna network after the MyM. Appropriate to put in
the "On" mode if the MyM is connected to a network with
digital TV boxes or TV sets with built-in digital receiver.
8.2.8 CI 1 and CI 2
The CI 1 and CI 2 menus gives you the possibility to get
information about CAM and Smartcard. CAM Interface 1
(CI 1) is used for decryption of services that is selected
for Output channel 1 and 2. CAM Interface 2 (CI 2) is used
for decryption of one service for Output channel 3.
NOTE! If t wo services should be decrypt ed in Common
Int er face slot 1 (CI1), make sure t hat t he CAM and
t he Smart card allows mult idecrypt ion.

User manual MyM DVB-3T , rev D eng Page 13
9Multiple installation and Factory reset
9. 1 Inst allat ion of mult iple MyM’ s
You can link MyM’s to view more programs on all your TVs. The maximum number
of MyM’s you can cascade is 4. The limit is set by the S/N value that has to be
above a certain level to give a good picture quality in a SMATV network.
To link 2 MyM’s:
Install the first MyM
Do a channel search on
the TV
Change output channels in the
MyM no 1.
Link the MyMs with a cable from
“Ant 2” connection on the first
MyM to “Ant 1” connection on the
second MyM. Connect the output
of the two MyM’s with a combiner
(see picture).
Power up and install the second MyM
Do another channel search on the TV and find the MyM channel one for each
MyM. Please remember that you can’t use neighboring output channels, not
even if they are on different MyM’s.
NOT E! If t he Loopt hr ough is act ivat ed it should be act ived only in
MyM #1 t o make sure t o have good qualit y on looped services (analogue
and digit al). T urn t he Loopt hrough t o Off in t he ot her MyM’s.
9. 2 Connect ing a Set -T op-Box wit h
t he MyM
The MyM has a loop-through facility that
makes it possible to connect digital Set
Top Boxes (STB) after the MyM for
households in the Cable network that
want to watch other channels than those
supplied with the MyM.
Fact ory reset
Factory reset can be done by doing as
follows:
- Remove power from unit and Press and hold the two arrow buttons and reconnect
the power to unit still holding the two arrows button. When the LED is flashing red
TV TV
MyM
STB
MyM #1
MyM #2

User manual MyM DVB-3T , rev D eng Page 14
you can release the two arrow buttons. This will bring the output frequencies back
to default (S11, S13 and S15).
10 Support and trouble-shooting
If you need more help with installation, please contact your local dealer. You can
also find more information on our web site: www.a2b.se
10.1 T rouble-shoot ing
Check CAM and
smartcard in the MyM.
CAM is not
working properly or
smartcard is not
authorised.
No Pay-TV
reception.
Consider purchasing a
TV with Nicam/A2
stereo sound.
No stereo decoder
in your TV.
Does your TV set
have stereo? Is stereo
selected?
No stereo
sound.
Install the MyM
vertically according to
the instructions.
Overheating due to
faulty installation.
Is the MyM lying
down?
Flickering sound
and blockings in
the picture.
Adjust or replace the
aerial for a better
signal.
Low signal level
from the aerial.
Flickering sound
and blockings in
the picture.
Adjust or replace the
aerial for a better
signal.
Low signal level
from the aerial.
Is the picture OK?Flickering sound.
Go to ”Return” with the
arrow buttons, then
press the [OK] button
on the MyM.
Menu not switched
off.
The TV picture
shows a menu.
Do a channel search
on the TV.
Channel search
not done on TV.
Indicator LED green.No sound or
picture.
Adjust or replace the
aerial for a better
signal.
No or poor signal
from the aerial.
Indicator LED red.No sound or
picture.
ActionProbable causeAnalysisError
Remove the aerial
signal amplifier.
The input level to
the MyM or to the
TV is too high.
Are you using an
aerial signal amplifier?
Flickering sound
and/or blockings
in the picture.
Kommentar [ DS4] : Usual
question about the websites!

User manual MyM DVB-3T , rev D eng Page 15
11 Technical specification
2 x DVB-T TERRESTRIAL RECEIVER
Frequency range 47-862 MHz
Connector Type F female, 75 ohm
Input level range Nom. 35 – 75 dBμV
Bandwidth 7/8 MHz
Number of tuners 2
3 x MPEG DECODER – VIDEO - AUDIO
Video standard MPEG2 MP@ML, MPEG4
h.264 MP@Level3
Audio standard AAC HE or MPEG1
Layer II AC-3 (option)
Aspect ratio Letterbox, Anamorphic,
Teletext Insertion in VBI
Subtitling Teletext or DVB subtitling
3 x MODULATOR
Modulation standard PAL B/G, I, D/K (DSB)
Audio FM-mono, NICAM stereo
A2 or A2*
Output channels 160 to 862 MHz
Pre-selected:
S11, S13, S15
Output level typ. 80 dBuV, fixed
Loop-through 47 - 862 MHz
Selectable On/Off
Built-in aerial amplifier 5 dB
RF output connector Type F female, 75 ohm
DECRYPTION
Decryption interface Common Interface
(PMCIA 5VDC)
Decryption type Single or Multidecryption CAM’s supported
OTHERS
AC Power supply 230 VAC typ (94-264 VAC)
AC Power consumption Typ. 18 W
DC output power 12 VDC +/- 10%
DC power consumption Typ. 15 W
Size 301x215x53mm (excl. connectors)
Weight approx. 900 g
Operating temperature -20 to +45C
We reserve t he right t o t echnical changes wit hout prior not ice.
Formaterat: Svenska
(Sverige)

User manual MyM DVB-3T , rev D eng Page 16
12 Declaration of Conformity
Declaration of Conformity
EC Directives
Can be found at www.a2b.se
Further information on www.a2b.se
655300-01 D