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1. Our limited warranty is considered void if a product is returned with removed damaged or tampered labels or any alterations including removal of any component or external cover carried out by unauthorized personnel OUT OF WARRANTY SERVICING We repair and service units of our production even once the warranty has expired if this is economically the best solution to the customer The mechanical and electronic spare parts are replaceable for a five year period after production when the circuits are assembled with discrete components When integrated circuits are used the supply of spare parts is guaranteed up to the depletion of our stock and depending on the possibility of procuring them on the worldwide market To avoid any unnecessary loss of time it is very important that the instrument be returned to our premises accompanied by a proper delivery note duly completed with all the required information as per the legal dispositions currently enforced 7 WARNINGS Content warning This document contains preliminary information about a product of QM Products OM Products reserves the right to make any changes or modifications at any time without prior notice QM Products DHM 2056 manual v2 0 10 APPENDIX The DHM 2056 offers a USB interface with the appropriate software DVProbe exe for advance programming The software can be found in the CD that accompanies the DHM 2056 System requirements e Windows XP SP1 or highe
2. mM Products 1 x HDMI to DVB T COFDM DUAL modulator DHM 2056 Operation Manual DHM 2056 DVB T Full modulator QM Products DHM 2056 manual v2 0 1 1 IMPORTANT SAFETY PRECAUTIONS INFORMATION READ THE FOLLOWING WARNINGS BEFORE YOU USE YOUR DEVICE WARNING The following safety precautions must be observed to prevent fire or electric shock hazard Safety precautions include but are not restricted to the following Power supply Mains cord Operate the unit only within the voltage range defined as appropriate by the manufacturer Occasionally check the power connector and remove dirt or dust that may have accumulated Use only the mains cord that comes with your unit Do not operate the unit or plug in the mains cord if it is broken split or damaged in any way Do not place the mains cord next to heating devices Do not pull it place heavy objects on it or damage it in any way Keep it out of reach of children Ensure that the device is plugged in a properly grounded socket Insufficient grounding may cause electrocution Always carefully disconnect all plugs by pulling on the plug and not on the cord Make sure the unit s power switch is turned off before removing the cord from an outlet Disconnect the mains cord when the unit is not in use for long periods of time or during storms Do not connect the unit to a multiple outlet to avoid plug overheating Disassembling This unit contains
3. 64QAM 1 4 1 8 1 16 1 32 1 2 2 3 3 4 5 6 7 8 RF DVB T COFDM 174 862MHz 90dbuV max 75Q F female 0 20dB 35dB Typical gt 45dBc lt 14 2 female 58 Display keypad USB interface 12VDC 400 mA max 0 C to 50 C 10 C to 70 C Up to 90 205 x 101 80 x 41mm 0 3Kg DHM 2056 manual v2 0 5 DIMENSIONS dimensions in mm QM Products DHM 2056 manual v2 0 9 6 QM PRODUCTS LIMITED WARRANTY This QM Products unit is guaranteed against defects in workmanship and materials for a period of five 5 years beginning on the date of purchase of the product During the applicable warranty period QM Products will repair or replace at our sole option without charge any defective component part of the purchased unit The unit is to be delivered packed in adequate packing AFTER an authorization for return has been received The owner s responsibilities are to use the instrument in accordance with its written instructions to provide transport to and from our facilities in the event service is required and to provide proof of purchase if requested Our warranty does not cover any problem resulting from a accident abuse neglect shock electrostatic discharge heat or humidity beyond product specifications improper installation operation maintenance or modification b any misuse contrary to the instructions in the user manual c malfunctions caused by other equipment WARNING
4. V2 11 197 12 441 13 193 13 572 2 3 14 929 16 588 17 564 18 096 64 QAM 34 16 796 18 662 19 760 20 358 5 6 18 662 20 735 21 995 22 620 7 8 19 595 21 772 23 053 23 751 QM Products DHM 2056 manual v2 0 8 NOTES QM Products DHM 2056 manual v2 0 17 products MAIN DISTRIBUTION Sat Lux S A 15 K Samuel Str Tel 30 210 9968010 Ag Dimitrios Greece Fax 30 210 9640127 www satlux gr Email info satlux gr DEALER INFORMATION QM Products DHM 2056 manual v2 0 18
5. 2056 s using the SSD Button interface of the front panel of the device following the steps below 1 Step Power up the MHD 2056 by adding the external power supply The MHD 2056 will need 20 30secs to initialize itself The SSD Seven Segment Display No2 Figure No 1 depicts the initialization status 21d Step Choose Chanel mode by pressing the Channel Profile button No 1 Figure No 1 and the Channel LED will lit 3 Step Adjust the output power using the output 20dB attenuator 4 Step Choose Profile mode by pressing the Channel Profile button No 1 Figure No 1 and the Profile LED will lit How Profiles works In an installation all the modulators or Mux in general need to have different values of the following fields to avoid conflicts in the automated scan of the TV sets Program Name Service ID TS ID For that reason the user must always select a different Profile number in every modulator starting from Number 1 Eg Let s say we want to install three modulators in a CATV network In step No 4 we will choose e Profile No for the 1 modulator o meaning Program Name DTV 1 o meaning Service ID 1 o meaning TS ID 2240 e Profile No 2 for the 2 modulator o meaning Program Name DTV 2 o meaning Service ID 22 o meaning TS ID 2241 QM Products DHM 2056 manual v2 0 6 e Profile No 3 for the 3 modulator o meaning Program Name DTV 3 o meaning Service ID 23 o meaning TS I
6. 418 19 353 20 491 21 112 V 14 929 16 588 17 564 18 096 2 3 19 906 22 118 23 419 24 128 64 QAM 34 22 394 24 882 26 346 27 144 5 6 24 882 27 647 29 273 30 160 7 8 26 126 29 029 30 737 31 668 QM Products DHM 2056 manual v2 0 DVB T bitrates Mbit s for 7 MHz bandwidth non hierarchical systems Guard Interval Modulation Een 1 4 1 8 1 16 1 32 V 4 354 4 838 5 123 5 278 2 3 5 806 6 451 6 830 7 037 QPSK 6 532 7 257 7 684 7 917 5 6 7 257 8 064 8 538 8 797 7 8 7 620 8 467 8 965 9 237 V 8 709 9 676 10 246 10 556 2 3 11 612 12 902 13 661 14 075 16 QAM 34 13 063 14 515 15 369 15 834 5 6 14 515 16 127 17 076 17 594 7 8 15 240 16 934 17 930 18 473 V 13 063 14 515 15 369 15 834 2 3 17 418 19 353 20 491 21 112 64 QAM 34 19 595 21 772 23 053 23 751 5 6 21 772 24 191 25 614 26 390 7 8 22 861 25 401 26 895 27 710 QM Products DHM 2056 manual v2 0 DVB T bitrates Mbit s for 6 MHz bandwidth non hierarchical systems Guard Interval Modulation Een 1 4 1 8 1 16 1 32 V 3 732 4 147 4 391 4 524 2 3 4 976 5 529 5 855 6 032 QPSK 3 4 5 599 6 221 6 587 6 786 5 6 6 221 6 912 7 318 7 540 7 8 6 532 7 257 7 684 7 917 V2 7 465 8 294 8 782 9 048 2 3 9 953 11 059 11 709 12 064 16 QAM 11 197 12 441 13 173 13 572 5 6 12 441 13 824 14 637 15 080 7 8 13 063 14 515 15 369 15 834
7. D 2242 As a result all the above modulators have different values in the above fields Caution e Every time we choose a different Profile number the DHM 2056 will apply a full reset to itself that will last for 20 30 seconds e Using the USB interface someone has the ability to add custom values to the above fields e The HDMI LED indicates the lock status of the HDMI input 3 3 2 Installation using the USB interface The DHM 2056 provides a USB interface with the appropriate software for advanced programming For more information please read Appendix A t o ComPort DHM 2056 About Comet DVB T Encoder Multiplexer Settings System Notes Board Settings Settings SW Update Instructions dicome es E MHz put Sou ri Upto 16 Characters 1 65535 Y Do NL Make sure that the FW Version version of available Bandwidth Video BR Mbps Program update file is higher than 4 the current version Provider Lo SW Version already installed into the u Constellation Audio BR kbps device X Original NET ID 1 65535 LOT Number Take a note of the U Modulation set cer TSID 1 65535 setting e g Channel EE Program Name e t c Guard Interval ff the device 8 PMT PID Video PID Audio PID 31 8100 31 8100 31 8100 If not already connected c SE LE connect the device to a X this computer by mea
8. SSD Seven Segment Display interface and keypad for quick installation or by using the USB interface with the appropriate software accompanying the DHM 2056 for advance programming Finally the DHM 2056 s metal case provides excellent electromagnetic shielding as well as great temperature dissipation and rigidness QM Products DHM 2056 manual v2 0 3 3 2 FEATURES High quality and performance CVBS and HDMI input with redundant source mode Very clean RF spectrum MER value 35dB RF output frequencies 174 862MHz H 264 HD encoder bitrate 1 19Mbps HDCP support Very friendly user interface for quick installation USB interface for advanced programming External power supply 3 2 1 Auto reset functions and watchdog During the normal operation of the DHM 2056 the main CPU monitors all the internal parts in order to ensure that the device works normally In case of an internal error or module failure the DHM 2056 immediately initiates the recovery procedure by resetting the appropriate module or the device Finally watchdog timers ensure that the device will be reset in case of CPU failure 3 2 2 Buttons lock mechanism The DHM 2056 will lock the functionality of its buttons after one minute idle time to avoid of being pushed accidentally Two red dots on the SSD notify the user that the button interface is locked To unlock it the user must press simultaneously the UP DOWN buttons for 5 seconds 3 2 3 Input redundant source
9. e 2 3 Audio BR Kbps Set the audio bitrate 3 Multiplexer Settings In this category the user is able to adjust parameters of the DHM 2056 multiplexer as described below 3 1 Network Name ID Enter the Network name ID 3 2 Program Name ID Enter the Program name ID 3 3 Provider Name Enter the Provider name 3 4 Original Net ID Set the Net ID 0 65535 3 5 TS ID Set the Transport Stream ID 0 65535 3 6 PMT PID Set the PID value 3 7 Video PID Set the Video PID value 3 8 Audio PID Set the Audio PID value 3 9 LCN No Set the LCN No 1 999 must be enabled first 3 10 LCN Provider Set the LCN provider TS ID must always be different between DVB T modulators in the same network QM Products DHM 2056 manual v2 0 12 Caution e Modulation settings must be applied with care and in order to have adequate output bitrate The output bitrate which can be calculated from the tables in Appendix B must be equal or greater than the total sum of the bitrate of the encoders Example Assuming we select the following modulation settings Modulation 8K Constellation 16 QAM Code Rate 5 6 Guard Interval 1 32 Bandwidth 8MHz We have an output bitrate of 20 107 Mbps according to Appendix B This means that encoder s bitrate must be adjusted in such a way that the total bitrate of the encoder does not exceed the 20 107MBps limit otherwise artifacts may occur For example one valid selection i
10. mode When the DHM 2056 detects a valid input source coming eg from the HDMI input it will mark this source as its primary source In case of a failure of the primary source the DHM 2056 will automatically switch to secondary source which in our case the CVBS input 3 2 4 USB interface for advance programming The DHM 2056 provides a USB interface with the appropriate software for advanced programming For more information please read Appendix A 3 3 BLOCK DIAGRAM RF out EN HDM RN CUM H 264 encoder TS Mux QM Products DHM 2056 manual v2 0 4 3 4 FRONT PANEL 5 4 O C E C 1 12VDC L _ Lock INPUT Channel Profile _ 2 3 _ Channel Profile v roducts RF OUTPUT Ne pro pere DHM 2056 DVB T Y Full HD modulator 6 AUDIO RF IN RF OUT CVBS L R HDMI USB f 8 10 Tl 12 13 Figure No 1 Channel or Profile selection button Seven Segment Display UP DOWN buttons LED indicators 12V 2A VDC input 20dB output attenuator RF IN loop through RF OUT main output CVBS input 10 Left audio channel input 11 Right audio channel input 12 HDMI input 13 USB input CANNA QM Products DHM 2056 manual v2 0 5 3 3 INSTALLATION The DHM 2056 can be programmed with one of the following ways e From the front panel display e From the USB interface 3 3 1 Installation using the Front panel display The user is able to install very quick and easy multiple MHD
11. n case of four encoders would be to set each encoder bitrate to 5Mbps since 4 x 5Mbps 20Mbps 20 107MBps 4 System Settings This category depicts information about the system s settings as follows 4 1 4 2 4 3 4 4 4 5 Buttons Status Depicts the status of the modulator Idle or Running FW Version Depicts the firmware version of the up SW Version Depicts the software version of the DV Probe HW Version Depicts the hardware version of the DHM 2056 Serial number Depicts the serial number of the device e By pressing the Get button in any sub category all the settings of this category are downloaded from the modulator e By pressing the Apply button in any sub category all the settings of this category are uploaded to the modulator e The Factory Defaults button sets the modulator s setting to factory default e The Reset System button applies a reset to the modulator QM Products DHM 2056 manual v2 0 13 APPENDIX DVB T bitrates Mbit s for 8 MHz bandwidth non hierarchical systems Guard Interval Modulation dee 1 4 1 8 1 16 1 32 V 4 976 5 529 5 855 6 032 2 3 6 635 7 373 7 806 8 043 QPSK 34 7 465 8 294 8 782 9 048 5 6 8 294 9 216 9 758 10 053 7 8 8 709 9 676 10 246 10 556 V 9 953 11 059 11 709 12 064 2 3 13 271 14 745 15 612 16 086 16 QAM 34 14 929 16 588 17 564 18 096 5 6 16 588 18 431 19 516 20 107 7 8 17
12. nnect the device to A gt this computer by means of a USB cable Es LCN 1 999 LCN Provider Turn on the device while v E m mm EE ENEE mx Get All Parameters Not Connected Figure No 2 QM Products DHM 2056 manual v2 0 11 Software guidelines 1 From the ComPort combo box select the correct USB port that connects the DHM 2056 and press Connect 2 Once the software has successfully connected with the device it will automatically download all the settings of the DHM 2056 3 The DV Probe consists of four sub categories as described below DVB T Settings Parameters regarding the modulator part Encoder Settings Parameters regarding the H 264 encoder Multiplexer Settings Parameters regarding the multiplex part System Settings Parameters regarding system information 1 DVB T Settings In this category the user is able to adjust several parameters of the modulator RF output part as described below 1 1 Channel Output channel selection VHF 5 12 amp UHF 21 69 1 2 Bandwidth Bandwidth selection 1 3 Constellation Constellation selection 1 4 Modulation Modulation selection 1 5 Guard Interval Guard Interval selection 1 6 Code rate Code rate selection 2 Encoder Settings In this category the user is able to adjust parameters of the H 264 encoder as described below 2 1 Input source Select the primary input source 2 2 Video BR Mbps Set the video bitrat
13. ns of a USB cable LCN 1 999 LCN Provider Turn on the device while v Not Connected QM Products DHM 2056 manual v2 0 7 4 TECHNICAL SPECIFICATIONS Input Type Connector Video coding Profile Resolution HDCP support Audio Standard Audio Bit Rate Level H 264 Encoder Standard Bit Rate Configurable Parameters Transport Stream Processing Automatic Regeneration Configurable Parameters LCN support LCN Providers DVB T Output Standard Bandwidth Mode Constellation Guard Interval Code Rate RF Output Type Output Frequencies Output Level Connector Output Attenuator MER Shoulder Attenuation Output loop through loss Connectors Programming Interface General Power Supply Power supply consumption Operating Temperature Storage Temperature Humidity Dimensions Weight QM Products 1 x HDMI amp 1 x CVBS 1 x HDMI amp 1 x RCA Female White Red Yellow MPEG 4 AVC H 264 High profile 4 0 1920x1080 30p for HDMI PAL 720x576 25fps Yes HDMI amp Mono Stereo MPEG 1 Layer 64 96 128 192 256 320 384 kbps 0 5Vpp to 1 0Vpp adjustable MPEG 4 AVC H 264 1 19 Mb s adjustable Service Name Service ID Video PID Audio PID PMT PID NIT PAT CAT SDT PMTs EITs tables TS ID Original Network ID Network ID Provider Name Yes Nordin ITC UK EICTA Europe New Zealand EN 300 744 5 6 7 8 MHz 2K 8K QPSK 16QAM
14. parts that cannot be repaired by the user Do not disassemble or try to repair it as this will void all warranties Please contact the manufacturer if you experience any problems with your unit Water humidity Fire e Do not keep the unit in a humid place or near water Do not plug unplug the unit with wet hands Never place a candle or another source of fire on the unit as it may fall and start a fire If the mains cord or the power connector is damaged or destroyed or if there is a sudden loss of picture during operation or if you notice a strange smell or there is smoke immediately switch the unit off disconnect the mains cord and contact the manufacturer s technical support department QM Products DHM 2056 manual v2 0 2 Installation Storage e This unit contains high precision pieces of electronics To ensure optimal performance and avoid damage do not store it in any location where it may collect dirt duct lint etc Do not expose it to extreme heat or cold e g in direct sunlight near a heater or in the car during the day Place the unit in a secure place to avoid falls e Before moving the unit always unplug all cords first e When installing the unit make sure that an outlet is within easy reach In case of malfunction switch the unit off and unplug the power cord When the unit is not in use for a long period of time make sure that the mains cord is disconnected Connectivity e Before connecting the unit to o
15. r e Windows Vista e Windows 7 32 amp 64bit e Windows 8 32 amp 64bit Device connection via software 1 Insert the supplied software CD into your CD ROM drive 2 Connect the DHM 2056 via the USB cable A male to B male type 3 In case Windows cannot install the USB drivers automatically when prompt insert the correct path of the CD folder named USB drivers which contains the DHM 2056 USB drivers 4 Once Windows have successfully installed the USB drivers of the DHM 2056 a pop up message appears to verify this process 5 Run the DVProbe exe file and the main screen will appear Figure No 2 e m x ComPort DHM 2056 About DVB T r Encoder Multiplexer Settings System Notes Board Settings Settings SW Update Instructions Name ID SL ans E Channel MHz put Source Up to 16 Characters 1 65535 X M E Make sure that the J essendi FW Version version of available Bandwidth Video BR Mbps Program update file is higher than K the current version Provider SW Version already installed into the u Constellation Audio BR kbps device E Original NET ID 1 65535 LOT Number Take a note of the U Modulation TERES _ amc i TSID 1 65535 setting e g Channel Program Name e t c Guard Interval E Po PMT PID Video PID Audio PID en 31 8100 31 8100 31 8100 If not already connected Code Rate co
16. ther electronic devices always switch off and unplug all devices Maintenance e Do not spill liquids on the unit Do not use any diluents or volatile liquid to clean the unit Instead use a soft slightly damp cloth and allow the unit to dry completely before using again Handling e Do not poke your finger into the openings on your unit e Never put paper metal parts or other objects into the openings of your unit If you suspect that there are foreign parts in your unit switch it off and unplug the mains cord Contact the manufacturer s technical support department e Do not step on or place heavy objects on top of the unit To avoid hardware damage handle all buttons connectors and switches gently 2 INTRO Congratulations on purchasing the DHM 2056 You now own a high quality DUAL DVB T HD modulator To get the most out of your purchase please take the time to carefully read through this manual 3 INSTRUCTIONS 3 1 DESCRIPTION The DHM 2056 is a high quality DVB T DUAL modulator which accepts one HDMI and one analog Stereo Audio CVBS signal and converts it into one RF DVB T channel on its output The excellent picture Full HD 1920 1080 30p and modulation quality MER 35dB renders the DHM 2056 the ideal solution for distributing HD or analog TV signals coming from e g a DVD player STB or camera in a CATV network using the DVB T technology The user has the ability to control the device by either using the onboard

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