ANTIFERENCE CONEXER DMHD04D User manual

USER MANUAL
DIGITAL MODULATOR DMHD04D/C
QUAD HDMI TO DVB-T ENCODER/MODULATOR

Congratulations on your purchase of the DMHD04D/C
This ‘state of the art’ product, is a digital encoder. The video and audio inputs are
taken from HDMI connectors from the source device. The RF output is selectable and
congured as a DVB-T or DVB-C modulator.
Conguration is made through Windows based USB software which can be
downloaded from our website: www.antiference.co.uk/conexer-quad-hdmi-dvb-t-
modulators and select the ‘downloads’ tab.
CONTENTS
1 Safety considerations page 3
1.8 Location of the module page 4
2 Description of the different elements page 4
3 Installation of operating software page 5
3.1 Downloading & installing software page 5
3.2 Powering up page 5
4 Installing & Programming the module using a PC page 6
4.1 Accessing parameters on a PC page 6
4.2 Setting input parameters page 7
4.3 Setting NIT parameters page 8
5 Adding Services (programmes) page 9
6 Using HD LCN page 9
7 Occupied bandwidth & Specications page 9
8 Technical Specications page 10
8.1 Appendix A Constellation & max bit rates page 10
8.2 Appendix B original network ID page 11
9 Declaration of Conformity page 11
DMHD04D/C
2

1 SAFETY CONSIDERATIONS
1.1 Connecting to the mains supply
This product has to be connected to the mains supply. If there is the slightest doubt concerning
the type of connection available on the installation, please contact your supplier of electricity.
Before carrying out maintenance operation or modication of the installation, the modulator
has to be disconnected. Remark : only use the supplied power adaptor.
1.2 Over Voltage
An over voltage on the mains supply, can cause short circuits or re. Never overload the power
lines.
1.3 Liquids
This module should be protected from splashes. Please assure yourself that no containers
containing liquids are placed on this module. Also be aware of other persons splashing liquids
on the module.
1.4 Cleaning
Disconnect the module before cleaning. Use only a damp cloth without solvents.
1.5 Ventilation
In order to assure an adequate air circulation and to prevent overheating, the ventilation
holes should not be obstructed. The module may not be installed in a hermetically sealed
environment. Other electronic products or heat producing items may not be placed upon or
near the module.
1.6 Accessories
The use of accessories not manufactured by the
manufacturer can cause damage to the module.
1.7 Installation of the module
The module must be installed in a place well protected
from direct sunlight. All measures have to be taken
to avoid installation in humid or sunny places. Do not
install near heating elements or other devices producing
heat. Assure yourself that the module is placed at least
10 cm from other equipment which is susceptible to
electromagnetic radiation. Do not install the module on
unstable items, a fall can cause physical or material
damage. Always ensure the module is mounted vertically
and not on its side.
3
DMHD04D/C

C1C2
1.8 - Location of the module
Leave a minimum pace of at least 15cm above and below the product to guarantee an optimal
ventilation. The module should be mounted to assure a maximum natural ventilation. The
module should be xed to a wall using the wall xings on the module.
2 - Description of the different elements
C1 Power supply input of the
modulator (5 VDC / 4 A)
C2 USB input (for programming
the DMHD04D/C by PC)
C3 HDMI input
C4 HDMI input
C5 HDMI input
C6 HDMI input
C7 DVB-T loop input
C8 DVB-T output
4
DMHD04D/C
C6
C3
C4
C5
15cm
15cm
C7
C8

5
DMHD04D/C
3 - Installation of the operating software
3.1 - Downloading and installing the programming software
The DMHD04D/C is programmable via the DTViFace which is a Windows based USB software
which can be downloaded from www.antiference.co.uk/conexer-quad-hdmi-dvb-t-modulators
The software les are located in a zip le on the ‘downloads’ tab on the product page.
The DTViFace supports WindowsXP, Vista & Windows 7 (32bit) and Windows 7 (64bit) and
Windows 8.
Follow the instructions in the set up wizard to
download the software from the website.
Install the software on your PC,
generating a desktop icon if required,
and connect the modulator via the
USB cable (supplied) to your PC.
3.2 Powering Up
Power the modulator up with the PSU supplied. Once all the LED’s on the front panel of the
modulator have turned green, launch the DTViFace software. The start up screen will appear:
Select the DTVHD HDMI icon to navigate the programming screen.

4 - Installing and programming the module using a PC
4.1 - Accessing the parameters on a PC
After downloading and installing the DTViFace software, open the programme and select
the DMHD04D/C symbol to get access to the parameters of the DMHD04D/C module. The
following will appear.
6
DMHD04D/C

7
DMHD04D/C
4.2 - Setting the input parameters on the DMHD04D/C module.
Both the A to C inputs can have their individual parameters set:
• Name - give the programme name.
• S.I.D.- enter the service ID number
• Bit Rate Video - select a value between
6000 and 120000 kb/s
• Audio - select AAC or MPEG
• Programme List - The four programmes will appear in the programme list.
• Programme Activation - Programmes are activated by a double click on the red or green
symbol. Further details can be found on page 9.
• The programme is activated
• The programme is not activated

4.3 - Setting the N.I.T. parameters of the DMHD04D/C modulator.
The following parameters can be set on the DMHD04D/C Modulator:
• Version - enter the N.I.T version.
• ONID - enter the decimal code for the
original Network ID, This is the country
where you are located.
• NID - enter the network ID.
• Network Name - enter the network name.
• Frequency -
Under the N.I.T. Parameters you will nd the output frequency of the modulator.
The DMHD04D/C has a secondary adjacent output channel, but the output frequency is set
by the rst channel. The frequency of the other channel is automatically adjusted and cannot
be changed by the user. This secondary channel is present to add services to if required. The
user should ensure that 2 adjacent channels are available in the band for the modulator in the
location where the output is to be tuned to.
• T.S. ID - For each channel, a T.S. ID should be assigned.
• Constellation - Select the ‘Const.’ control to adjust
• Bandwidth - Select the ‘Bandwidth’ control to adjust
• F.E.C. - Select the ‘F.E.C.’ control to adjust
• Guard Interval - Select the ‘Guard Interval’ control to adjust
• Output Level - An internal attenuator allows to lower the output level of the modulator.
The attenuator can be adjusted between 0dB (max output) and -20dB.
Some notes on setting the N.I.T parameters and T.S. Id.:
When you make a headend you will probably have more than one modulator in your system. In
order to keep consistency throughout your complete headend, please follow these guidelines:
a. For your complete headend make sure that the N.I.T. (version/ONID/NID/Network
Name) are IDENTICAL throughout the entire system.
b. For your complete headend make sure that all T.S. Id. (Transport Stream ID) are
UNIQUE. Every output channel should have a unique ID in the system. Make sure that a
T.S.Id. does not appear more than once in the system.
8
DMHD04D/C

9
DMHD04D/C
5 - Adding services (programmes) to the modulator:
In the list of programmes, you will nd two or four
columns with a GREEN ‘+’ symbol or a RED ‘-’ symbol.
The columns indicate the output channels of the
modulator. If a green ‘+’ symbol appears besides a
certain programme, this means that this programme is added to that specic channel in the
modulator. The status can be changed by double clicking the activation symbol besides the
requested programme. In the far right columns you can add a LCN number or HDLCN number
for channel numbering.
6 - Using High Denition HD LCN
In some systems you may want to broadcast a version of a programme in Standard Denition
(SD) at the same time as High Denition (HD). With HD LCN numbering, you can force HD
Television sets to follow the HD LCN numbering and SD Television sets to follow the LCN
numbering for those programs which are transmitted in duplicate.
For example: You want to broadcast a BBC television programme in SD version as well
as in HD. Application of HD LCN would be:
BBC1 LCN: 5 HDLCN: 55
BBC1HD LCN: 55 HDLCN: 5
Television sets with the HD tuner will now put BBC1 HD on number 5 and BBC1 on channel 55
Television sets without the HD tuner will now put BBC1 HD on number 55 and BBC1 on
channel 5
7 - Occupied Bandwidth
The terrestrial Aerial symbol features a number beneath that signies the total occupied
bandwidth of the modulator. This number should not exceed the maximum available
bandwidths of the modulator. The maximum available bandwidth is calculated on the maximum
available bandwidth per channel x the number of channels. The maximum available bandwidth
per channel is depending on the modulation parameters (Constellation / Bandwidth / F.E.C. /
Guard interval). (See technical specication list)
For example: for a DMHD04D/C modulator, the maximum available bandwidth is 4 x 31.6Mbit/s =
approx. 126.4Mbit/s.
The occupied bandwidth of each channel in the modulator is
showed by bar graphs in the modulator window.
The occupied bandwidth will increase as the number of programmes added to that channel
is increased. It also depends on the bandwidth of each individual programme. Please avoid
overloading a channel as this will lead to defects in the programmes.

8 - Technical Specications
8.1 Appendix A - Constellation and maximum Bit Rate
10
DMHD04D/C
DMHD04D/C Technical Specification
DMHD04D/C
Video Inputs Inputs X4 HDMI
Resolutions 720p - 1080p
Compression H.264 - bitrate 5-15 Mb/s
Audio Inputs Input HDMI
Sample Rate HDMI (35kHz / 44.1kHz / 48kHz)
Compression AAC-LC or MPEG1-L2 - bitrate 128-384 kb/s
DVB Processing Table Insertion PAT, PMT, SDT, NIT, EIT
Configuration Channel/network name, SID, LCN, TSID, ONID, NID, EIT versions, audio/video PIDs
DVB-T Output Output frequency / level 170-230 MHz + 470-862 MHz / > 95dB V
2 adjacent channels
Constellation - FEC QPSK/16QAM/64QAM - 1/2, 2/3, 3/4, 5/6, 7/8
Guard Interval 1/4, 1/8, 1/16, 1/32
Mode - MER 2K/8K - 35dB
DVB-C Output Frequency Level 50-862 Mhz / 95dB V
2 adjacent channels
Constellation - symbol rate 16, 32, 64, 128, 256, QAM (EN 300 429) - 4,00 - 6,96 Msps
Power Supply DC 2.1mm connection +5V
Consumption 15 Watts
Dimensions LxWxH 250 x 200 x 38mm (DMHD04D), 200 x 135 x 67mm (DMHD04C)
Weight 0.6 kg
Modulation Code Rate Guard 1/4 Guard 1/8 Guard 1/16 Guard 1/32
Mb/s Mb/s Mb/s Mb/s
QPSK 1/24 0.976471 5.529412 5.854671 6.032086
2/36 0.635294 7.372549 7.806228 8.042781
3/47 0.464706 8.294118 8.782007 9.048128
5/6 8.294118 9.215686 9.757785 10.05348
7/88 0.708824 9.676471 10.24567 10.55617
16 QAM 1/29 0.952941 11.05882 11.709341 12.06417
2/3 13.27059 14.74510 15.61246 16.08556
3/4 14.92941 16.58824 17.56401 18.09626
5/6 16.58824 18.43137 19.51557 20.10695
7/8 17.41765 19.35294 20.49135 21.11230
64 QAM 1/2 14.92941 16.58824 17.56401 18.0926
2/3 19.90588 22.11765 23.41869 24.12834
3/4 22.39412 24.88235 26.34602 27.14439
5/6 24.88235 27.64706 29.27336 30.16043
7/8 26.12647 29.02941 29.27336 31.66845