MidiMod Firmware User's Manual
Contents
1. 11 3 82 Coderate FEC 18 3 2 9 Audio Channel 11 3 9 DVB S2 Settings 18 3 2 10 Audio Volume 11 3 9 1 Symbolrate 18 3 2 11 Audio Mode 11 3 9 2 Constellation 18 3 2 12 Samplerate Audio Samplerate 11 3 9 3 Coderatte 19 3 2 13 Audio Bitrate 12 3 9 4 Rolloff 19 3 2 14 Video PID Program Video PID 12 395 Pilots soea y dee OY wide ary 19 3 2 15 Audio PID Program Audio PID 12 3 10 DVB C Settings 20 3 2 16 PMT PID Program PMT PID 12 3 10 1 Symbolrate 20 3 2 17 Program ID 12 3 10 2 Constellation 20 3 2 18 Program Prov Program Provider 12 3 11 DVB T Settings 20 3 2 19 Program Name 12 3 11 1 Coderate FEC 20 3 2 20 LCN mode 13 3 11 2 Constellation 21 maintechs 3 11 3 Guard Interval 21 3 11 4 Bandwidth 21 3 12 HF Output Settings 22 3 12 1 Frequency Output Frequency 22 3 12 2 Attenuation Attenuation HF 22 3 12 3 Spectrum 22 3 12 4 Carrier Only 2 22 3 12 5 TX Enable 23 4 Verbose Status Report 23 4 1 Product Version Information 23 4 2 Global Status 23 SR Systems 43 Input Status 23 44 Output Status 24 45 PSIStatus 24 4 6 TS Input Status 242. 3 12 5 TX Enable This menu item is the modulator master switch Selected Value Description disable modulation output is disabled enable modulation output is enabled 4 Verbose Status Report When controlling the MidiMod via the RS232 serial port as described in section 2 you can get a verbose status report from the MidiMod by choosing option 1 Show Status in the main menu The meanings of the different lines in the verbose status reports are explained in the sections below 4 1 Product Version Information DVB Midimod CPU V0 2 FPGA 005 This line gives you information about the product DVB MidiMod the CPU and the FPGA software versions 4 2 Global Status Current Status running This line gives you information about the current global status of the MidiMod The status message shown here is the same as shown on the frontpanel display Detailed information on the possible status messages and their meaning can be found in section 5 4 3 Input Status Input 1 0N 2 0FF This status line tells you which of the TS Input Ports are currently active and forwarding their data to the TS output port 99 maintecn SR Systems GmbH 4 4 Output Status Output 1 0N 2 0FF This status line tells you which of the Output Ports are currently active 4 5 PSI Status Basic PSI Generator Active This line shows the status of the built in multiplexer s table generator Status Display De
3. and buttons again to select a different category See MidiMod Menu Structure on page 6 for a list of all available categories and menu items Press the button to edit the menu item currently displayed Press the button to exit the menu and return to the splash screen Figure 3 Category and menu item selection After selecting an item for editing with the button the value can be changed with the and buttons If the item does not represent a distinct set of options but a number or a text string the and buttons move the cursor and and change the character under the cursor Use the button to save the changes and press the button to revert the modifications and return to the item selection Figure 4 Editing an item with distinct options and a string item 2 Controlling the MidiMod via the RS232 All configuration options that are available on the frontpanel can also be modified via the RS232 interface on the MidiMod PCB Please refer to the MidiMod hardware datasheet for the pinout 2 1 Establishing a Connection The RS232 interface can be used with standard terminal software e g HyperTerminal included with some versions of the Windows operating system Putty or any other VT100 compatible terminal software Set your PC serial port to 115200 Baud eight bits per character no parity one stopbit 115k2 8N1 and disable any flow control When powering up your MidiMod you should see
4. 3 2 3 Video Format The Video Format menu item configures the encoder to the format that is used on the input signal tS The Video Format configuration is not available when SDI is selected on an encoder with a new SDI input extension board The SDI extension board will autodetect the video format in that case Selected Value Description PAL Standard PAL television signal PAL 60 The video signal is interpreted as PAL 60 PAL with 60 Hz and 525 lines PAL M 60 The video signal is interpreted as PAL M PAL with 60 Hz and 525 lines PAL N The video signal is interpreted as PAL 60 PAL with 60 Hz and 525 lines NTSC The video signal is interpreted as NTSC NTSC 4 43 NTSC with color carrier at 4 43 MHz SECAM The video signal is interpreted as SECAM t PAL 60 PAL M PAL N and NTSC 4 43 are only available if a newer encoder with T VP video decoder is connected Older encoders with SAA video decoder only support PAL NTSC and SECAM maintecn SR Systems GmbH 3 2 4 Resolution Video Resolution Selected Value Description D1 The video image is encoded with full resolution 720x576 HD1 The video image is encoded with half resolution 360x576 CIF The video image is encoded with quarter resolution 360x288 3 2 5 GOP Mode Video GOP Mode The GOP Mode menu item defines how the encoder uses different frame types while encoding the video stream Selected Value Description l Each GOP consi
5. 4 7 Input Port Status 25 48 ASI Input Status 25 4 9 TunerStatus 25 4 10 Encoder Status 26 4 11 System 27 4 12 Modulator Status 27 5 Status Codes 27 maintecn SR Systems 2010 11 18 11 42 The information in this manual was compiled with care and to our best knowledge nevertheless there are probably some errors left in this document We do not take legal or any other responsibility for the correctness of any information We are happy to receive your feedback If you found an error or think that something should be explained in greater detail don t hesitate to contact us This document is protected by copyright law All trademarks are owned by their respective owners maintech GmbH Phone 49 931 40 70 6 90 Otto Hahn StraBe 15 Fax 49 931 40 70 6 53 D 97204 Hochberg Web http www maintech de Germany EMail docu maintech de maintecn SR Systems 0 Definition The SR Systems MidiMod is a universal software defined radio platform suitable for a wide range of modulation schemes For professional use maintech provides firmware for the following modulation standards DVB T DVB S DVB S2 DVB C and ATSC MidiMod uses a direct Il Q modulation approach which allows for a wide frequency range while maintaining a low component count 1 Frontpanel The MidiMod can be controlled via an optional LCD keypad unit connected to the fron
6. are shown Use this status display to check if a signal is present on the TS Input Port 24 maintecn SR Systems GmbH 4 7 Input Port Status IN1 external clock IN2 input disabled This status line tells you about the status of each TS input port that is set to disabled external clock or generate clock If the port is set to tuner ASI TTX or encoder different status lines which are explained in the following sections are shown Status Display Description input disabled The TS input port has been disabled external clock The TS input port has been configured to receive TS clock and data from an external device generate clock The TS input port has been configured to provide TS clock to and receive data kBit s from an external device The TS clock is set up to receive the specified bitrate on the port 4 8 ASI Input Status INi ASI In HW Error IN2 ASI In V34 locked This status line tells you about the status of a TS input port that is set to ASI and the status of the connected ASI input module It is only shown if a TS input port is set to ASI Status Display Description ASI In V locked The TS input is ok and locked to a ASI signal The firmware version of the ASI input module is shown in the status message ASI In V not The TS input is ok but not locked to a ASI signal locked ASI In HW Error The ASI input module was not detected or is faulty 4 9 Tuner Status IN1 MB86
7. depends heavily on the quality of the RF channel The available coderates depend on the chosen constellation type not every FEC is supported in each constellation Selected Value Description 1 4 Available for QPSK Highest FEC code rate best error correction lowest data rate For each input bit four output bits are sent 1 3 Available for QPSK 2 5 Available for QPSK 1 2 Available for QPSK 3 5 Available for QPSK 8PSK 2 3 Available for QPSK 8PSK 16APSK 3 4 Available for QPSK 8PSK 16APSK 32APSK 4 5 Available for QPSK 16APSK 32APSK 5 6 Available for QPSK 8PSK 16APSK 32APSK 8 9 Available for QPSK 8PSK 16APSK 32APSK 9 10 Available for QPSK 8PSK 16APSK 32APSK Lowest FEC rate worst error correction capability highest usable datarate For nine input bits ten output bits are sent 3 9 4 Rolloff Configures the Rolloff Factor of the MidiMod You can choose between Rollloff Factor 0 20 0 25 and 0 35 3 9 5 Pilots Configures the pilots of the MidiMod Enabling the pilots will decrease the bitrate in favour of a better receiver performance it the receiver supports pilots 10 maintecn SR Systems 3 10 DVB C Settings The following menu items are subitems of the Modulator menu item DVB C Settings They are only available if your MidiMod provides DVB C modulation 3 10 1 Symbolrate Configures the modulation symbol rate of a DVB C MidiMod The e
8. A15 tuner locked IN2 DIB3000 4 Way tuner error This status line tells you about the status of a TS input port that is set to tuner and the status of the connected tuner module NIM It is shown only if a TS input port is set to tuner The type of the detected tuner is displayed in square brackets 25 maintecn GmbH Status Display SR Systems Description MB86A15 DVB S A Fujitsu MB86A15 DVB S tuner SR Systems DVB S NIM has been detected Tuner settings for DVB S are shown in the Tuner Settings menu STV0297 DVB C A ST Microelectronics STV0297 DVB C tuner SR Systems DVB C NIM has been detected Tuner settings for DVB C are shown in the Tuner Settings menu NXT6000 DVB T A NextWave NXT6000 DVB T tuner SR Systems DVB T NIM has been de tected Tuner settings for DVB T are shown in the Tuner Settings menu DIB3000 DVB T A single DibCom DIB3000 DVB T tuner SR Systems DVB T NIM has been detected Tuner settings for DVB T are shown in the Tuner Settings menu 2x DIB3000 A DibCom DIB3000 dual diversity DVB T tuner SR Systems DVB T diversity NIM has been detected Tuner settings for DVB T are shown in the Tuner Settings menu NIMV3 DVB T A DibCom DIB7000 DVB T tuner SR Systems DVB T NIM has been detected Tuner settings for DVB T are shown in the Tuner Settings menu NIMV3 DVB S2 A Fujitsu MB86A15 DVB S2 tuner SR Systems DVB S2 NIM has been de tected Tune
9. The TS input mode of TS input port x is set to encoder but a MPEG encoder was not detected or an error occurred while starting the encoder Please make sure that your encoder is connected properly or try a different encoder if you suspect a hardware problem The TS input mode of TS input port x is set to tuner but a tuner was not detected or an error occurred while configuring the tuner Please make sure that your tuner is connected properly or try a different tuner if you suspect a hardware problem The TS input mode is set to tuner a tuner was detected but is not locked to a signal Check if your tuner settings are correct and make sure that the tuner gets a good signal The PLL of the modulation DAC is not locked This status probably indicates a hardware failure Please ask for support The PLL of the modulation frequency VCO is not locked This happens if the MidiMod is configured to a frequency that is not in the specified frequency range for your model See MidiMod frequency ranges on page 22 for a list of MidiMod models and their supported frequency ranges The upconverter connected to the upconverter control port could not be initialized reported an error or is incompatible Look at the boot messages on the RS232 port for details The upconverter connected to the upconverter control port is not locked Make sure that the MidiMod is configured for a output frequency in the range specified for your spe
10. a boot message similar to this example DVB Midimod Firmware V0 2 c 2009 2010 maintech GmbH FPGA firmware v005 successfully uploaded SI570 XTAL 114309326 Hz REF 100000000 Hz OnBoard REF SI570 OnBoard VCO ADF4350 i MidiMod hardware datasheet http www maintech de DS2MO Download Putty at http www chiark greenend org uk sgtatham putty download html maintecn SR Systems OnBoard Gain I Q Real HF output range on boad upconverter 68750 2300000 kHz 2 2 Changing Settings After the boot process is complete the MidiMod displays its main menu which also can be re displayed by pressing Enter in the terminal software MidiMod Mainmenu 1 show status 2 HF Output Settings 3 Modulator 4 Inputi 5 Input2 gt The contents of the main menu depend on the connected transport stream source a tuner will need other settings than the MPEG2 encoder A menu option is selected by entering its number followed by pressing Enter 3 Menu Structure 3 1 IN x Input Settings The options in the Input Settings category tell the MidiMod what kind of device is connected to the TS input connectors and how the transport stream is configured For devices like the MPEG2 encoder it also enables uploading of the required firmware image 3 1 1 Mode Input Mode This menu item tells the MidiMod what kind of device is connected to the TS input connector maintecn SR Systems Sele
11. al settings for each modulation type of the Midimod 5 maintecn SR Systems 3 7 1 Mode This menu item decides which TS from which TS input port is modulated on the output port Selected Value Description 1 only Only data from TS input port 1 are modulated 2 only Only data from TS input port 2 are modulated multiplex The MidiMod multiplexes data from input port 1 and 2 1 over 2 The MidiMod modulates data from input port 1 if no TS is found on input port 1 the MidiMod modulates data from input port 2 2 over 1 The MidiMod modulates data from input port 2 if no TS is found on input port 2 the MidiMod modulates data from input port 1 3 7 2 PSI PSI Settings The MidiMod has a built in PSI table generator which generates ETSI EN 300 468 compliant PSI and SI tables for up to two connected MPEG encoders or in extended mode for an arbitrary number of external services The configuration for the extended mode is created with the help of our maintech Mux Configurator and uploaded to the MidiMod via XModem PSI Tables PSI Table Generator Selected Value Description disabled The table generator in the MidiMux is disabled simple The simple table generator which generates tables for the encoders directly connected to the MidiMux is enabled extended The extended table generator which is configured with the help of the maintech Mux Configurator is enabled Stream ID S
12. atched on rising clock edge e Clockrate Sets the clock rate Valid values are between 10 and 100000 kbps e PSI Tables See the section 3 1 2 about PSI Tables on page 8 for the relevant parameters continued on next page maintecn SR Systems continued from previous page Selected Value Description external clk A transport stream is expected on the TS input port The MidiMod will expect a TS clock from the connected device The data will be latched on rising clock edge See the section 3 1 2 about PSI Tables on page 8 for the relevant parameters Use this setting when connecting one of the following devices e MiniMux or MidiMux multiplexer See the maintech application note http www maintech de ANCHM for infor mation on how to chain multiplexers e legacy 4 TS multiplexer 3 1 2 PSI Tables This option is only available when Input Mode is set to Tuner to ASI to generate clk or to external clk Selected Value Description pass PSI Tables are not blocked block PSI Tables are blocked 3 2 Encoder Encoder Settings The following menu items are subitems of the Input x Settings submenu Encoder They are only available if the Input Mode is set to MPEG encoder and an encoder is physically connected 3 2 1 System Bitrate Set the encoder s system bit rate audio video and tables to the given value The modulator does not check if your configured system bitrate fits into the bandwidth
13. cific upconverter When an upconverter is connected to the upconverter control port you have to set the desired output frequency for this upconverter in the MidiMod Do not configure your MidiMod to an intermediate frequency the MidiMod automatically selects the right IF for the connected upconverter The MidiMod is working The MidiMod is ready and running but modulation is disabled Enable modulation if you wish to transmit a signal The MidiMod is transmitting The MidiMod is in an unknown state This indicates a severe hardware or software error Power cycle your MidiMod and if the problem persists ask for support 28
14. cted Value Description MPEG Encoder The MidiMod will configure and control an SR Systems MPEG2 encoder module con nected to the TS input port Tuner The MidiMod will configure and control an SR Systems tuner module NIM Supported tuner modules are e DVB S tuner Datasheet http www maintech de DSNS1 e STV0297 DVB C tuner Datasheet http www maintech de DSNC1 e DiBcom 3000 DVB T tuner diversity or single Datasheet http www maintech de DSNTD or http www maintech de DSNT1 e NXT6000 DVB T tuner The MidiMod will also control SR Systems intelligent tuner modules Intelligent tuner modules can be used standalone and be configured via display or serial port When they are connected to a MidiMod the MidiMod will control the tuner module and the tuner s local settings are disabled Plase note that for this feature the NIM s firmware version must be 0 28 or later Supported intelligent tuner modules are e ATSC tuner Datasheet http www maintech de DSIA1 e DiBcom 7000 Datasheet http www maintech de DSIT1 e DVB S S2 tuner Datasheet http www maintech de DSIS2 The MidiMod automatically detects the connected tuner type ASI generate clk The MidiMod will control an SR Systems ASI input module ASI In on the TS input port A transport stream is expected on the TS input port The MidiMod will generate the TS clock with a clock rate configured in the menu item nput x The data will be l
15. eo Joint Stereo and Dual Channel 64 96 112 128 160 192 224 and 256 kBit s CD quality is reached at approx 224 kBit s Possible values for Single Channel 32 48 56 64 80 96 112 128 160 and 192 kBit s CD quality is reached at approx 160 kBit s 3 2 14 Video PID Program Video PID Sets the DVB PID used to transmit the video data Valid values are between 0x0020 and Ox1FFE The video PID must be unique make sure that it is not used for anything else e g audio PMT etc If you plan to multiplex multiple streams make sure that the video PID is unique among all other PIDs in the resulting multiplex 3 2 15 Audio PID Program Audio PID Sets the DVB PID used to transmit the audio data Valid values are between 0x0020 and 0x1FFE The audio PID must be unique make sure that it is not used for anything else e g video PMT etc If you plan to multiplex multiple streams make sure that the audio PID is unique among all other PIDs in the resulting multiplex 3 2 16 PMT PID Program PMT PID Sets the DVB PID used to transmit the PMT for the encoded service Valid values are between 0x0020 and Ox1FFE The PMT PID must be a unique PID that is not used for video audio or anything else If you plan to multiplex multiple streams make sure that the PMT PID is unique in the whole multiplex 3 2 17 Program ID Sets the service ID transmitted in the PAT PMT NIT and SDT 3 2 18 Program Prov Program Provider Sets the
16. et the transport stream ID that is transmitted in PAT NIT and SDT for the encoded services Network ID Set the network ID that is transmitted in the NIT for the encoded services Repetition Set the PSI table repetition time in ms Valid values are between 25 ms and 500 ms Setting the repetition rate to 250 ms results in the complete set of PSI tables being transmitted 4 times per second Network Name Set the network name that is transmitted in the NIT for the encoded services Upload PSI tables 3 See http www maintech de en support information for the actual MuxConfigurator 16 maintecn SR Systems ts This menu item is only available if the extended table generator is enabled It is also only accessible via the serial RS232 port Select this menu item to upload a binary configuration file generated by the maintech MUX configurator After selection you need to send the file via XModem 3 7 3 BISS BISS Settings This menu item is only available if your MidiMod features BISS encryption It enables you to select the following output modes Selected Value Description Out Mode Decides about the encryption mode Possible options are CSA BISS and BISS E en cryption In every mode there is a menu item Discard Packet You are able to choose between none and only crypted e Discard Packet none all TS packets are passed to the modulator TS packets that are already encrypted are NOT encrypted again by the m
17. maintecn SR Systems MidiMod Firmware User s Manual Contents 0 Definition 4 3 2 21 LCN number 13 3 3 Tuner Settings Basics 13 1 Frontpanel 4 3 3 1 TXEnmable 13 11 Status Screen 4 3 3 2 Frequency 13 1 2 Configuration Menu 5 3 4 Tuner Settings DVB T DVB T Div 14 3 4 1 Frequency 14 2 Controlling the MidiMod via the RS232 5 342 Bandwidth 14 2 1 Establishing a Connection 5 3 5 Tuner Settings DVB S S2 14 2 2 Changing Settings 6 3 5 1 Frequency 14 3 5 2 Symbolrate 14 3 Menu Structure 6 3 5 3 LNC Power 14 3 1 INx Input Settings 44 6 3 5 4 LNC 22kHz Tone 15 3 1 1 Mode Input Mode 6 3 6 Tuner Settings DVB C 15 3 1 2 PSI Tables 8 3 6 1 Frequency 15 3 2 Encoder Encoder Settings 8 3 6 2 Symbolrate 15 3 2 1 System Bitrate 8 3 6 3 Constellation 15 3 2 2 Video Input 6 4 4p dah we ae 8 3 7 Modulator Settings 15 3 223 Video Format 9 3 7 1 Mode 16 3 224 Resolution Video Resolution 10 3 7 2 PSI PSI Settings 16 3 2 5 GOP Mode Video GOP Mode 10 373 BISS BISS Settings 17 3 2 6 VideoAGC 10 3 8 DVB S Settings 17 3 2 7 Video Gain 10 3 8 1 Symbolrate 18 3 2 8 Audio Input
18. minor problems 3 4 Good choice for reliable connections with good SNR 5 6 Intermediate setting for very good links 7 8 Lowest FEC rate worst error correction capability highest usable datarate For seven 3 11 2 Constellation input bits eight output bits are sent Configures the modulated constellation of data carriers inside the COFDM DVB T signal Selected Value Description QPSK 2 bits per symbol most robust transmission lowest data rate QAM16 4 bits per symbol used by most commercial broadcasters QAM64 6 bits per symbol very delicate signal highest data rate 3 11 3 Guard Interval Configures the guard interval of the DVB T signal The guard interval is a gap between OFDM symbols which is filled with a repetition of the last symbol to help the receiver compensate the effects of multipath propagation Selected Value Description 1 4 Longest guard interval lowest usable bitrate best protection against multipath propa gation 1 8 1 16 1 32 Shortest guard interval highest usable bitrate least protection against multipath prop 3 11 4 Bandwidth agation Configures the bandwidth of the DVB T signal Contrary to all other transmission parameters the bandwidth can not be automatically detected by the receiver Most countries use fixed bandwidths in specific ranges of the RF spectrum you should obey these guidelines as many consumer receivers cannot be switched to a different bandwidth
19. ntered value is interpreted as kSym s Enter a symbol rate between 1000 kSym s and 7000 kSym s 3 10 2 Constellation Configures the QAM modulation constellation of a DVB C MidiMod Selected Value Description QAM16 4 bits per symbol most robust transmission lowest useable data rate QAM32 5 bits per symbol QAM64 6 bits per symbol QAM128 7 bits per symbol QAM256 8 bits per symbol least robust transmission highest usable data rate 3 11 DVB T Settings The following menu items are subitems of the Modulator menu item DVB T Settings They are only available if your MidiMod provides DVB T modulation Using the TPS bits of the pilot carriers the DVB T parameters are included into the modulated signal Any DVB T receiver can lock onto any DVB T signal without exact knowledge of the configuration only the bandwidth setting needs to be known on the receiving side 3 11 1 Coderate FEC Configures the modulation code rate FEC rate of a DVB T MidiMod For the perfect value a little experimentation might be needed as the optimal setting depends heavily on the quality of the RF channel Selected Value Description 1 2 Highest FEC code rate best error correction lowest data rate For each input bit two output bits are sent continued on next page 20 maintecn SR Systems GmbH continued from previous page Selected Value Description 2 3 Use for channels with some
20. odulator e Discard Packet only crypted encrypted packets that are fed into the TS input of the modulator are discarded Unencrypted packets are encrypted by the modulator before they are transmitted CSA Encryption mode is CSA You are able to decide about the following parameters e Discard Packet none only crypted e CSA Key xxxxxxxxxxxxxxxXx BISS Encryption mode is BISS You are able to decide about the following parameters e Discard Packet none only crypted e BISS Key invisible xxxxxxxxxxxx BISS E Encryption mode is BISS E You are able to decide about the following parameters e Discard Packet none only crypted e BISS Key invisible xxxxxxxxxxxxxxxx e Private Key invisible xxxxxxxxxxxxxx 3 8 DVB S Settings The following menu items are subitems of the Modulator menu item DVB S Settings They are only available if your MidiMod provides DVB S modulation 17 maintecn SR Systems 3 8 1 Symbolrate Configures the modulation symbol rate of a DVB S MidiMod The entered value is interpreted as kSym s Enter a symbol rate between 1000 kSym s and 45000 kSym s 3 8 2 Coderate FEC Configures the modulation code rate FEC rate of a DVB S MidiMod For the perfect value a little experimentation might be needed as the optimal setting depends heavily on the quality of the RF channel Selected Value Description 1 2 Highest FEC code rate best error correction lowest data
21. pply power to the HF input 13V The DVB S tuner supplies 13V to the HF input 18V The DVB S tuner supplies 18V to the HF input 14 maintecn SR Systems tS The supply of 13 or 18V to the HF input works only if you have connected an additional 24V power supply to your DVB S tuner The NIM does not contain a step up regulator 3 5 4 LNC 22kHz Tone Selected Value Description Off The DVB S tuner does not apply 22kHz to the LNC power supply On The DVB S tuner applies 22kHz signal tone to the LNC power supply t The 22kHz tone works only if you have connected an additional 24V power supply to your DVB S tuner and if you have selected 13V or 18V as LNC power 3 6 Tuner Settings DVB C These menu items are displayed when a DVB C NIM is attached to the MidiMod 3 6 1 Frequency Set the reception frequency for the DVB C tuner in kHz Valid values are between 85000 kHz and 860000 kHz 3 6 2 Symbolrate Set the reception symbol rate for the DVB C tuner in kSym s Valid values are in the range between 1000 kSym s and 45000 ksym s 3 6 3 Constellation Set the reception constellation for the DVB C tuner Possible values are QAM16 QAM32 QAM64 QAM128 and QAM256 3 7 Modulator Settings The options in this menu item select all needed parameters for the modulation Depending on the selected MidiMod type different menu items for the modulation are available See the general settings below and then the speci
22. provided by the configured modulation settings The user has to make sure that the system bitrate is at least 3 below the modulation bitrate Please enter a bitrate value based on 188 byte packets in kBit s with possible values between 1000 kBit s and 20000 kBit s If the given value is too low the encoding process will stop at the first buffer overflow 3 2 2 Video Input This selects the used hardware input for the video signal maintecn SR Systems Selected Value GmbH Description disabled Do not encode a video signal The stream will be announced as radio service CVBS Encode signal from the encoder s CVBS input YC Encode signal from the encoder s Y C S Video input YCbCr Encode YCbCr signal from the encoder s external video connector Pin 10 is Y pin 12 Is Cb Pin 14 is Cr RGB Encode RGB video signal from the encoder s external video connector Pin 10 is green pin 12 is blue pin 14 is red SCART Encode RGBS RGB with external sync video signal from the encoder s external video connector Pin 8 is sync pin 10 is green pin 12 is blue pin 14 is red SDI Encode signal from the attachable SDI input board tS YCbCr RGB and SCART are only available if a newer encoder board with TVP video decoder chip is connected Older encoders with SAA video decoder only support CVBS and Y C See the MPEG encoder datasheet at http www maintech de DSENC for information about the external video connector
23. r settings for DVB S2 are shown in the Tuner Settings menu tuner not found No tuner module was detected Check the cable connecting the MidiMod and the tuner module tuner error A tuner module was detected but a fatal error occured while controlling the tuner module The MidiMod continues trying to reinitialize the tuner Check the cable connections and if the problem persists ask for support tuner not locked A tuner module was detected and configured but it could not lock to a signal The MidiMox continues trying to retune to the signal Check frequency and modulation settings in the Tuner Settings Menu tuner locked A tuner module was detected configured and locked to a signal 4 10 Encoder Status IN1 encoder running IN2 encoder error BOOT This status line tells you about the status of a TS input port that is set to Encoder and the status of the connected MPEG 2 encoder module It is shown only it a TS input port is set to Encoder Description The MPEG 2 encoder on the TS Input Port could not be booted This could happen if there is no encoder connected if there is a problem with the cable between encoder and MidiMod or if the encoder is defective Status Display encoder error BOOT continued on next page 26 maintecn SR Systems continued from previous page Status Display Description encoder error The MPEG 2 encoder on the TS input por
24. rate For each input bit two output bits are sent 2 3 Use for channels with some minor problems 3 4 Good choice for reliable connections with good SNR 5 6 Intermediate setting for very good links 7 8 Lowest FEC rate worst error correction capability highest usable datarate For seven input bits eight output bits are sent 3 9 DVB S2 Settings If you have a MidiMod for DVB S2 modulation you can choose between the standards DVB S and DVB S2 in the menu item Modulator submenu DVB S2 For the parameters for DVB S modulation please see above The following menu items are only available if your MidiMod provides DVB S2 modulation 3 9 1 Symbolrate Configures the modulation symbol rate of a DVB S2 MidiMod The entered value is interpreted as kSym s Enter a symbol rate between 1000 kSym s and 32000 kSym s 3 9 2 Constellation Configures the constellation type of the DVB S2 MidiMod Selected Value Description continued on next page 18 maintecn SR Systems GmbH continued from previous page Selected Value Description QPSK Most reliable operation 8 PSK Better data rate compatible with consumer receivers 16 APSK Only compatible with professional receivers 32 APSK Only compatible with professional receivers 3 9 3 Coderate Configures the modulation code rate FEC rate of the MidiMod For the perfect value a little experimentation might be needed as the optimal setting
25. s extracted and encoded from the attached SDI input port 3 2 9 Audio Channel This menu item selects the audio channels for de embedding from SDI It is only available when a SDI input module with support for embedded audio is connected to the TS input port Possible values are 1 12 1 34 2 12 2 34 3 12 3 34 4 12 and 4 34 3 2 10 Audio Volume The Audio Volume menu item lets the user attenuate the received SDI audio signal before encoding It is only available when a SDI input module with support for embedded audio is connected to the TS input port Possible values are in the range 0 dB to 60 dB 3 2 11 Audio Mode Configures the audio channel mode for the encoded audio data Selected Value Description Stereo The audio from the left and right input is encoded as stereo signal Joint Stereo Stereo encoding with better quality but less stereo channel separation Dual Channel The signal from the left and right input is encoded as two separate mono channels Single Channel The audio is encoded as single mono channel 3 2 12 Samplerate Audio Samplerate Configures the sample rate for analog audio input Possible values are 32 kHz 44 1 kHz 48 kHz J maintecn SR Systems 3 2 13 Audio Bitrate Configures the bitrate that the encoder uses for audio encoding More bitrate results in better audio quality Possible values depend on the selected Audio Mode see 3 2 11 Possible values for Ster
26. scription PSI Generator The multiplexer s PSI Generator was disabled The multiplexer will not generate disabled any PSI or SI tables Basic PSI Generator The multiplexer s Basic PSI Generator is active The multiplexer will generate active PAT SDT NIT and PMTs for the connected MPEG 2 encoders Custom PSI Filter The multiplexer s Extended PSI Generator is active and a custom tableset and or active PID filter was uploaded and is now active Custom PSI Filter The custom tableset PID filter you have uploaded is incompatible with this incompatible MidiMod s firmware Please use the latest version of the maintech Mux Config urator see http www maintech de en support information to generate the mbn File and update the multiplexer firmware to the latest version Custom PSI Filter The multiplexer s Extended PSI Generator is active but no custom tableset and or empty PID filter was uploaded Use the maintech Mux Configurator to set up a custom table set and or PID filter Export this configuration as a mbn file and upload this file to the MidiMod Custom PSI Filter The multiplexer s Extended PSI Generator is active and an error occured while error executing the custom table set or filter program Please ask for support 4 6 TS Input Status TSIi external clock TSI1 Okbps 0 0 stuffing This status line tells you about the status of each TS Input Port The current TS bitrate and the percentage of stuffing packets
27. service provider name transmitted in the SDT 3 2 19 Program Name Sets the service name transmitted in the SDT sibs maintecn SR Systems 3 2 20 LCN mode Determines if a Logical Channel Number for this service is sent in the NIT Selected Value Description disabled No Logical Channel Number is signalled for the service visible The Logical Channel Number is signalled as visible channel hidden The Logical Channel Number is signalled as hidden command 3 2 21 LCN number Sets the Logical Channel Number that is sent in the NIT for this channel t This menu item is only shown if LCN mode is set to visible or hidden 3 3 Tuner Settings Basics The Tuner Settings submenu is part of the menu Input x Settings It is available when the TS input is configured to Tuner mode see 3 1 1 and a compatible NIM network interface module is attached to the physical interface The MidiMod will automatically detect the tuner type and display the corresponding settings 3 3 1 TX Enable This menu item controls the behaviour of the MidiMod when the attached tuner loses signal lock Selected Value Description Always The MidiMod always transmits even when no valid signal is received by the attached tuner On Tuner Lock The MidiMod only starts transmission when the attached tuner is locked to a valid carrier 3 3 2 Frequency All NIM modules need a frequency to tune onto The frequency is given in kH
28. sts only of l frames IP The encoder uses one l frame and then only P frames inside a GOP For a GOP size of ten the resulting GOP will look like this IPPPPPPPPP IBP The encoder uses an I frame at the beginning of the GOP and encodes the rest in B and P frames For a GOP size of ten the resulting GOP will look like this IBPBPBPBPB IBBP The encoder uses an I frame at the beginning of each GOP and encodes the rest in B and P frames For a GOP size of ten the resulting GOP will look like this IBBPBBPBBP 3 2 6 Video AGC The Video AGC menu item controls the automatic gain control of the video input Selected Value Description disabled The video gain is set manually using the Video Gain setting enabled The automatic gain control of the video input is active tS The video AGC and video gain settings are not available for older encoders with SAA video ADC If the input is set to SDI the video AGC is also not available 3 2 7 Video Gain The Video Gain menu item controls the video gain if the automatic gain control is disabled Possible values are from 0 to 300 where 148 is the default value 10 maintecn SR Systems 3 2 8 Audio Input This menu item decides if audio is encoded and transmitted For video only mode set this to disabled Selected Value Description disabled No audio data is encoded and transmitted analog Audio is encoded from the encoder s analog inputs SDI Audio i
29. t was started but an error occured during configuration The abbreviations in the round brackets indicate what part of counfiguration failed Possible values are VID AUD BR and PID encoder running The MPEG 2 encoder on the TS input port is running 4 11 System SYSTEM ONAIR This status line tells you if the Modulator is on air or not 4 12 Modulator Status MOD 38153 kbps 99 9 stuffing This status line tells you about the transport stream on the modulator output The total bitrate and the percentage of stuffing packets are shown 5 Status Codes Possible status codes that are reported by the MidiMod on its frontpanel and on the RS232 user interface Status Display Description The MidiMod firmware is booting and initializing the hardware This state is reported only for a short time during powerup The MidiMod is loading the FPGA responsible for the modulation This state is reported only for a short time during powerup and when changing the modulation type The MidiMod is uploading firmware to an MPEG encoder connected to a TS input port This state is reported for a short time during powerup and after changing the TS input mode to MPEG Encoder Loading the FPGA failed This status probably indicates a hardware failure Please ask for support continued on next page 97 a maintecn SR Systems GmbH continued from previous page Status Display Description
30. than the default one Standardised values are 6MHz 7MHz and 8MHz SR Systems tuners also support 5 MHz as a low bandwidth mode The MidiMod can be configured from 1MHz to 8MHz in 1MHz steps 92 s maintecn SR Systems t The negative impact of phase noise and jitter introduced by the VCO PLL on the MidiMod and any external upconverters increases with lower bandwidth 3 12 HF Output Settings The options in this menu item provide all needed parameters for the output signal 3 12 1 Frequency Output Frequency Sets the output frequency Valid values are 10000 10000000kHz 3 12 2 Attenuation Attenuation HF Selects the HF Output Attenuation You can choose values between 0 and 36 dB in steps of 3 dB 3 12 3 Spectrum The output spectrum can be inverted to compensate for inversion introduced by an upconverter Selected Value Description normal The spectrum of the MidiMod s output signal is not inverted inverse The spectrum of the MidiMod s output signal is inverted e g the lowest frequency becomes the highest 3 12 4 Carrier Only To allow simple measurements and power calibration the modulation can be reduced to a single unmodulated carrier on the configured output frequency Selected Value Description no Carrier only mode is disabled the MidiMod outputs the final modulated signal yes Only a single carrier with maximum amplitude is output O maintecn SR Systems
31. tpanel connector The frontpanel consists of a LC Display several LEDs and buttons eeoeeoeo OeO Figure 1 Frontpanel display and button arrangement e Power LED e RF Status LED e Encoder Tuner Status LED e FPGA Status LED e Encoder Status LED ON AIR LED Enter and exit the menu abort data entries Edit the current menu item and commit the changes Browse menu categories change character while editing an item Browse menu items within a category move cursor while editing an item Switch display backlight on and off Press and hold for several seconds to disable modulator output 1 1 Status Screen Under normal conditions the frontpanel display shows the MidiMod status screen On this screen the first line shows the product name which can be slightly different from the example shown here The second line shows the current status code See the MidiMod Status Codes in section 5 on page 27 for a list of possible messages and their meaning Figure 2 MidiMod status screen without and with error message maintecn SR Systems GmbH 1 2 Configuration Menu Whenever you see the status screen on the frontpanel display pushing the button enters the configuration menu The menu items are grouped in various categories To select a category use the and buttons The and buttons will browse the items within the selected category Use the
32. z and refers to the center of the channel See the specific sections for DVB T S S2 and C for the allowed ranges 3 maintecn SR Systems 3 4 Tuner Settings DVB T DVB T Div These menu items are displayed when a DVB T NIM is attached to the MidiMod t FEC constellation setting and guard interval are automatically detected from the TPS bits embedded into the carrier Only frequency and bandwidth need to be set to receive a signal 3 4 1 Frequency Set the reception frequency for the DVB T tuner in kHz Valid values are between 145000 kHz and 858000 kHz The DVB T frequency refers to the center of the channel independently of the bandwidth 3 4 2 Bandwidth Set the reception bandwidth for the DVB T tuner in MHz Valid values are between 1 MHz and 8 MHz 3 5 Tuner Settings DVB S S2 These menu items are displayed when a DVB S NIM is attached to the MidiMod 3 5 1 Frequency Set the reception frequency for the DVB S tuner in kHz Valid values are between 950000 kHz and 2150000 kHz tS The MidiMod does not account for the LOF of an LNB that you might use If you use an LNB to receive the DVB S signal you need to calculate the IF and set the frequency to that value 3 5 2 Symbolrate Set the reception symbol rate for the DVB S tuner in kSym s Valid values are in the range between 1000 kSym s and 45000 ksym s 3 5 3 LNC Power Selected Value Description Off The DVB S tuner does not su
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