Modus 3 RF Network Emulator User Guide
Contents
1. USB Host USB 2 0 USB 2 0 USB socket Host Device Device CF amp USB sockets are on main 5 UL board but presented to front panel o gt CF Storage ac Ethernet Phy Copper 8GB 50 OL 10 100 i i E MAC Hard Disc Drive IDE VF option Rotary Encoder E Memory ea yte Flash Securit flash Novice at Interface SRAM CMOS or etc A LVDS I P N 16 data 22 address Control is 4 Chip selec ee Tene SPI In te ee Rd Wr etc indicators KEL m 5 sri Out MI nterrupt E g lt 7 aa Front DVB H Q FPGA OS se Enas 4S panel LC acquisition a er buttons card Sample Cik m gt ASI p ASI Out Tx 1 lt lt Asi ASI IN Rx ma Equaliser gt HP Syster gt es 27H PF AS ASI Out SPI gt Clocks Lotz Ex ae Tx gt 2 CS gt generation Lsp Func cie DAC Clock pass os sa p e 1PPS i oo J reference ARM uC rd 10 MHz Philips LPC2220 CI external ref Typ 75 MHz a Dual DAC Dual DAC Serial oe cae AD9777 AD9777 Differential number lt gt aa ie DAC signals to device Clock LIL 00 RF card RF ref clock 4 poo Tar PEro Direct RF gt IQ out drivers Up Convert SPI DDS Synth 1 0 2 0 GHz C VCO C UHF SHF PE switch contro 2 ower Fc ec Calibration Level EEPROM Attenuator controlled LC RF Out RF Card shown provi2. 5 6 7 8 MpeFecFlag 0 1 only used in DVB H mode TimesliceFlag 0 1 only used in DVB H mode lt IqModulator gt The pseudo modulator for raw IQ playout Currently there are no settings here so this element is not used lt TsModulator gt The pseudo modulator for raw transport stream output Currently there are no settings here so this element is not used lt RfOutput Power 24 5 RfOn 1 Frequency 506000000 Band UK UHF Spectrum normal Alc 0 gt The RF Output card configuration Power The desired output level in dBm between 110 and 0 RfOn 0 output off 1 output on Frequency An integer between 40000 and 2000000000 representing the output frequency in Hz Band The name of the frequency band that the user is currently using This affects the display of the channel on the UI only Spectrum normal or invert Alc 0 automatic level control is off recommended 1 automatic level control is on in IQ mode this requires that the digital headroom is set appropriately for the signal being played lt lQOuUtpUL Vrimis 0 555 75 The configuration for the baseband IQ output connectors on the back of Modus Vrms The desired rms output voltage in volts 27 Appendix C RF Specification Technical Specification Operating Conditions Power Supply voltage Operating Temperature range Outputs RF Ou
3. 1 LCD Contrast Allows adjustment of the LCD contrast DAB and T DMB I Q Operation Mode Modus 3 supports Digital Audio Broadcast DAB derived multimedia broadcast standards by I Q streaming that is playing pre recorded and Q RF digital samples through it s A D converters and RF up converter I Q samples can be 8 or 16 bit at a clock rate of 2 048 Mbit s To enter I Q mode the System screen should be entered and the System mode selected this should be set to I Q player and then OK Chlimetric Modus3 The right scroll button should then be selected to move to the I Q Stream screen This gives access to the I Q streaming controls CELLMetric Modus3z 22 O Source Source of the stored I Q data O Filename Name of the stored Q data file O Sample rate The clock sample data this is user selectable with the rotary knob but is usually 2 048 Mbit s OF Bit Depth 8 or 16 bit samples O Headroom The headroom required to prevent RF clipping of the transmitted signal For DAB this is usually 16dB Modus 3 I Q Test Patterns The IQ mode allows simple predefined test patterns to be output These are activated by choosing the Pattern source and selecting a pattern type Currently a Carrier wave pattern type is available which consists of a full scale tone at the centre frequency Modus 3 1 Q file format The Modus I Q file format is a binary file with each 4 bytes representing one I Q pair which may be
4. a dollar symbol Text that does not begin with this should be discarded Modus may send a response starting with ERR to indicate an error REQ message sent by PC CFM message sent by Modus in reply SET lt xml gt This sets the internal configuration The lt xml gt part of the text is the same as specified for the CONFIG XML file within the lt Configuration gt element For example the following message will set the output frequency SET lt RfOutput Frequency 506000000 gt Note that the Element should be properly closed and note that not all the attributes need to be specified Incorrect XML will be ignored REQ message sent by PC CFM message sent by Modus in reply SOK PLAY OK This tells Modus to begin playing the stream that has been previously selected BANDS XML Modus supports Bands and Channels This means that rather than the user having to painstakingly select a particular frequency in the RF Output menu by using the knob the user can select a band eg UK UHF and then select a particular channel in the band by name eg Ch 21 A number of Bands are built into Modus but is possible for the user to create a customised list of Bands and Channels instead This is achieved by creating an XML file called BANDS XML and ensuring it is placed on a Compact Flash card that has been inserted before Modus is turned on Strict adherence to XML standards is necessary so for example inverted commas ar
5. data rate is above that of the stored Transport Stream the modulator will automatically stuff null packets Modulation CELLMetric Modusz BRE Sets all modulation parameters Mode o QPSK o QAM 16 o QAM 64 O Guard o 1 32 o 6 o 1 8 o 1 16 O FFT o 2K o 4K DVB H Only o 8K O Code Rate o 62 o 62 3 o 34 o 5 6 o 7 8 O Deep interleaving DVB H Mode Only TPS DVB H Mode Only Q UU U ceLLmetric Modus3 228 Sets TPS processing parameters Cell ID Any numeric from 0 to 65535 set using scroll knob Time Slice MPE FEC RF Output Q UYU U U CELLmMetric Modus3 28 Sets Frequency channel and level for play out Frequency Band Channel Bandwidth Level 14 RF Processing cELLMetric Modus3 8 O Sets FEC and interleaving parameters O Spectrum Normal or inverted spectrum O Auto Level An Automatic Gain Control AGC function not normally required for DVB T H operation IQ Direct Output CELLMetric Modus3 28 O Differential I Q base band output to feed external up converter O Voltage 50R 555mv rms Housekeeping CELLMetric Modus3 28 y Save Settings Allows user setting to be stored to a XML file on the mass storage device o 15 O Ref Clock Default is internal clock but the external 10MHz reference input can be selected O Auto Play If selected allows Modus 3 to automatically start playing the preferred file on the storage media at power up
6. directory When a file is highlighted pressing OK will select that file LEFT ARROW Pressed from within a directory this collapses the display of its contents RIGHT ARROW Expands a directory CANCEL Returns to the previous menu without making any changes UP and DOWN ARROWS Moves up and down the list of files and directories Fix to allow the Source parameters including the filename to be reliably selected using the serial port XML commands Various other minor bugs resolved Known issues Occasionally when playing from hard disk at high bitrates the playout stops This is now much rarer than before but has still been seen Modus no longer requires that stored transport streams begin with a sync byte hex 47 The stored transport stream may contain a part packet at the start or end of the file and Modus will automatically regain synchronisation Hard disk playback bitrate increased Now suitable for 8 bit IQ files at up to 2MSPS DAB and DMB 16 bit IQ files at up to 1MSPS DVB T and H with 188 byte packets at all legal rates DVB T and H with 204 byte packets at up to 29Mbits Detection of more hard disk types IQ Player mode A new option in the RF Processing menu has been added to enable or disable IQ interpolation processing in the FPGA Note that interpolation is still being performed in the DACs This is a temporary option added because FPGA interpolation seemed to be causing some degradation of
7. e Upload of new firmware using CellMetric s burner tool e CellMetric internal debugging diagnostic and calibration purposes e Configuring and controlling Modus using simple text commands Configuring and controlling Modus using simple text commands Pin out Connect Modus to a PC using a 9 pin socket to 9 pin plug straight through cable It should be sufficient to connect pin 2 3 and 5 in the socket to the corresponding pin in the plug If a fully wired cable is used as used by the Cell Metric Burner application then it will be necessary to ensure that pin 4 and pin 7 are driven low by the PC this is not normally the default Pig eooo Pin 4 System reset when high input to Modus Normally kept low or not connected GND Must be low or not connected input to Modus Settings Baud rate 115200 Partiy None Databits 8 Stop bits 1 Handshake none Protocol The Modus 3 remote control protocol is text based The host PC sends a REQUEST message REQ and Modus always sends a CONFIRM message CFM in reply REQs and CFMs are always shorter than 256 bytes and terminated with ASCII LF 10 or ASCII CR 13 or both Complete messages should be transmitted within 0 5 seconds The host should expect a CFM message to begin within 2 seconds of the REQ message being completely sent If it is not received then it may be assumed that Modus has not received the message and it should be sent again CFM messages always begin with
8. the IQ waveform in some circumstances DVB T H Improvements to the spectral quality of the DVB T H modulation DVB T H A new option in the RF Processing menu has been added to selectively suppress certain carriers Various minor bugs resolved including a very rare lockup 32 Known issues DVB hierarchical modes are disabled in this release Occasionally when playing from hard disk the playout stops This is more likely to occur at higher bitrates 1 10 7 Modus now functions as a USB 1 1 Full Speed mass storage class device 17 September allowing both the CF card and the internal HDD to be browsed from a Windows 2007 XP or Vista PC using a standard USB cable Includes CellMetric USB vendor ID Improvements to the speed of this interface are currently being worked on Improved MER especially when using baseband I Q outputs due to improvements in clock routing within the FPGA Transport stream bitrate may now be automatically derived from the modulation parameters when in DVB T or DVB H mode and this is now the default Press left or right arrow when the bitrate is highlighted to select or deselect this feature If setting the bitrate manually there is now an indication as to whether the bitrate is appropriate for the modulation parameters Bug that corrupted HDD and CF accesses beyond the first 8GBytes now fixed Additional frequency bands added Various minor bugs resolved Improvements to burner application 1 9 5 Suppo
9. 008 1 11 6 30 October 2007 swapped in some circumstances This has now been fixed The IQ mode now allows simple predefined test patterns to be output These are activated by choosing the Pattern source and selecting a pattern type Currently a Carrier wave pattern type is available which consists of a full scale tone at the centre frequency Minor changes to the UI for selecting PRBS similar to the IQ Carrier wave selection Corresponding changes to the config XML and serial port XML commands If no bands xml frequency bands definition file is found on the compact flash modus will now use a bands xml file on the root of the harddisk if present If neither is present then Modus will use the in built frequency bands definitions as before If no config xml settings file is found on the compact flash modus will now use a config xml file on the root of the harddisk if present A new file selection dialog is provided for loading the settings file and selecting stream files This presents the Compact Flash card and the Hard Disk in a tree structure and it is possible to select the correct file by moving up and down the tree and expanding nodes where necessary Both the settings file and stream files may now reside anywhere on either disk The following keys are used to navigate OK Press this to enter the file selection dialog When a directory is highlighted pressing OK will expand or compact the display of that
10. CELLMetric Intelligent infrastructure Modus 3 RF Network Emulator User Guide CellMetric Limited St Johns Innovation Centre Cowley Road Cambridge CB4 OWS Telephone 44 0 1223 265571 Fax 44 0 1223 281 113 email info cellmetric co uk www cellmetric co uk Registered at the above address number 5456926 y CELLMetric Intelligent infrastructure Modus 3 RF Network Emulator Quick Start Guide Introduction Modus 3 is a transport stream player COFDM modulator and RF up converter in one integrated system It is designed to emulate the signals from terrestrial and mobile TV transmission network and currently support DAB derived systems like T DMB and DVB T derived systems like DVB H Modus 3 has a highly configurable software defined radio architecture and can actas a I Q RF signal generator for emulation of DAB T DMB systems or as a channel modulator for DVB T and DVB H Modus 3 can store I Q files and transport stream files on either a removable Compact Flash card or an optional internal hard disk drive RF output can be in the range 100MHz to 2 2GHz in a continuous range with levels between OdBm and 110 dBm in 0 5dB steps set using the internal electronic attenuator All channel settings are stored in a XML meta data file which resides with the I Q and Transport Stream files on either of the two storage media Modus 3 has a USB interfaces which provides mass storage class connectivity The unit also has differential 1
11. Q RF outputs which can be used to drive a external I Q Vector Signal Generator like the Agilent ESG C to provide a reference quality RF output with 0 1db resolution and very low phase noise Modus 3 support hierarchical ASI inputs and outputs together with SPI inputs and outputs For support issues not covered in this manual please email or phone CellMetric The dedicated support email is support cellmetric co uk DVB Composer CellMetric s DVB Composer application is an optional software package designed to work with the Modus 3 Composer emulates on PC a complete TV head end to either the DVB T or DVB H standard generating test streams and patterns for transmission Functionality includes Multiplexing SI Insertion time slicing MPE FEC and IP encapsulation DVB H DAB amp DAB Test streams CellMetric can provide a library of DVB H DAB and DAB standard test streams for the Modus 3 Getting Started Objectives The objectives of this guide are as follows e To provide an overview of Modus 3 Local Operation outlining the major applications incorporated e To explain how to install and use the Modus 3 in Local Operation mode for correct and safe operation e To describe the physical and electrical features of the Modus 3 in Local Operation to a level necessary for routine maintenance e To describe the functions available in Modus 3 Local Operation and how to access and use them via the software graphical user interface G
12. UI Layout and Content The user guide has a hierarchical structure of sections and sub sections It is suggested that after taking note of the safety advice sections on the Modus 3 Unit Power Supply Front and Rear Panel and DVB H operation are read before attempting to operate the unit Documentation Conventions Safety advice Warning or Caution to equipment or personnel or which is important to the equipment s correct operation Failure to understand and implement the information given may result in equipment failure or injury to personnel This caution symbol is used to mark procedural information that could prevent damage Electric Shock This sign indicates safety procedures or advice relating to the presence of high voltages Advice amp Suggestions o This information direction symbol is used to mark important non safety critical advice gt and suggestions for operation of the Modus 3 Local Operation Modus 3 Kit Modus 3 kits will have the following equipment supplied O Modus 3 RF Vector Signal Generator Auto Switching IEC Mains Power Supply Unit IEC Mains Lead Wideband Antenna 2GByte Ultra 3 Compact Flash Card OU OU l Compact Flash Reader USB Lead RS232 9 Way D Software Firmware Upgrade cable Peli 1500 Transport Case OU l Getting started user guide Power Supply A The mains power supply provided with the Modus 3 units is auto switching 100v to 240v AC Output is 12V DC and i
13. ame of the band BandBottom BandTop These values in Hz define the range of the band If the frequency that Modus is currently tuned to falls within these limits Modus considers the frequency to be within the particular band ChannelFrom ChannelTo Modus is normally tuned to the centre of a channel these values indicate the extend of the channel below and above the actual tuned frequency in Hz lt Channel Name Ch21 Frequency 474000000 Offset 166666 gt This is the definition of an individual channel There may be as many channels within a band as necessary subject to Modus memory constraints 25 Name This text identifies the name of the channel Frequency This is the centre frequency of the channel in Hz Offset This is an optional attribute not normally needed It specifies an offset to be applied from the centre frequency In the case shown the channel will be displayed as Ch21 167kHz and the frequency will be 473 833334MHz CONFIG XML If a file called CONFIG XML is found on the Compact Flash when Modus3 is turned on it will be read and used to set the initial configuration of the unit Any parameters missing or badly formed will be set to their default values Strict adherence to XML standards is necessary so for example inverted commas around attribute values are always needed All Elements must be closed eg lt Configuration gt Note that everything in this file is case sensitive In genera
14. arameters This config XML file stored on the compact flash card or hard disk and is associated with an individual transport stream or I Q data file Its function is to preset the modulation parameters required to correctly play and modulate the associated data file The config XML files is parsed by the Modus 3 when the unit powers up or the compact flash card is inserted into the compact flash slot at the front of the Modus 3 or the file to be played is selected Appendix A contains the syntax for XML programming The simplest way to generate the file is to use the Modus 3 to generate it by setting the desired modulation parameters from the local Ul and then going to the Housekeeping Screen Save settings will write an XML file to the compact flash disk This can then be edited on a PC using a commercially available XML editor A Please Note that up to software release 1 11 6 only the XML Auto Configuration file on the Compact Flash card is parsed XML files stored on the hard disk will not be parsed at startup From Software Release 1 14 0 multiple XML cofig files can exist on both compact flash and hard disk and are associated with individual transport stream or I Q files O Setting the frequency raster of the modulator This data can be stored on the compact flash card and will be parsed at start up The frequency data on the compact flash card will override the frequency raster stored in the Modus 3 O Calibration data to linearise the dig
15. ation data Product This is always set to Modus Version This should be set to 1 lt Device SoftwareVersion 1 0 10 SerialNumber 0000 OE9D 24A9 gt This is present for information purposes but is currently not used lt System Mode DVB H player AutoPlay 1 gt This element controls the overall functionality of the unit which sources are connected to which modulator and determines the legal values any of the following elements may take Mode IQ player TS player DVB T player DVB H player AutoPlay When set to 1 means that the stream will automatically play if present when the CONFIG XML file has completed loading lt Sources gt Lists the sources for the modulators The SystemMode determines whether IqSource or TsSource parameters are used 26 lt IgSource Channel 0 Input CF Filename STREAM IQ SampleRate 2048000 Headroom 6 000000 BitDepth 16 gt An IQ source Currently there may only be one IQ source and it must be on channel 0 Channel Must be 0 Input CF Filename The 8 3 DOS style filename of the file to be played SampleRate The sample rate required to be used for this stream in Hz as a decimal integer Headroom The digital headroom of the IQ stream in dB and between 0 and 20 inclusive BitDepth Modus is capable of playing both 8 bit 8 and 16 bit 16 IQ streams lt TsSource Channel 0 Input CF Filename N92 TRP BitRat
16. before undertaking any free to air transmission you obtain an appropriate experimental broadcast licence RF Connector Damage may occur to the RF Out SMA connector if the antenna is over tightened when still attached to the connector RF On Off RF output can be switched on and off by pressing the front panel rotary control knob the blue RF LED will switch on when the RF output is enabled Signal Source Overview Modus 3 can be considered as a series of integrated functional blocks O Play out source o Mobile video data from Compact Flash card o Mobile video data from internal hard disk o Mobile video data from ASI hierarchical interface o Mobile video data from SPI interface o PRBS from internal data generator O Modulator o DVB T Real Time Modulator o DVB H Real Time Modulator o IQ Streaming Engine O Upconverter o Converting base band modulator signals to RF signals in the range 100MHz to 2 2 GHz with 1KHz step size O Amplifier o Generating a level controlled 0 dBm signal across the 100MHz to 2 2 GHz band O Attenuator o Attenuating the RF level from 0 dBm to 110dBm in 0 5dB steps Modus 3 Motherboard Noise Fading v i ee R ource Simulator N es 0 2GH O Ol Option A ua utput Hard Disk b Interfaces for these functional blocks are as follows g ASI Interface Asynchronous Serial Interface ASI o 6ASI1 In Hierarchical High Priorit
17. ced in build 1 14 0 10 April 2009 Fix to DVB hierarchical modes which were broken in build 1 14 0 Various other minor bugs resolved Known issues Occasionally when playing from mechanical hard disk at high bitrates the playout stops This problem does not occur when playing from SSD solid state hard disks 1 20 0 Modus now supports playing of both very long gt 4GBytes and concatenated streams If you wish to use this feature please contact CellMetric 23 October 2008 When a file on the compact flash or hard disk was fragmented sometimes Modus would stream bad data at the fragmentation point When playing a DVB TH stream this might have resulted in brief visual or audio disturbances This problem has now been fixed In the previous release when loading config information from compact flash or hard disk at start up the name of the frequency band selected was not loaded This has now been fixed Various other minor bugs resolved Known issues Occasionally when playing from mechanical hard disk at high bitrates the playout stops This problem does not occur when playing from SSD solid state hard disks ASI input is broken in this release and in release 1 14 0 DVB hierarchical modes may be broken in this release and in release 1 14 0 1 14 0 Playout rate from hard disk has been improved a DVB hierarchical modes are now re enabled In releases 1 10 7 onwards the baseband IQ outputs were incorrectly 31 18 April 2
18. des continuous output from 0 1 to 2 2 GHz Other RF cards may be developed for alternative needs Operational Mode and Transmit Data File Formats Modus 3 support two storage file formats depending on its mode of operation Transport Stream O DVB T and DVB H mode In DVB mode the Modus accepts DVB Transport Streams of either 188 or 204 Byte format These can be fed as live streams into the hierarchal ASI inputs or stored on the hard disk or compact flash disk and played from these storage devices Modus 3 auto detects whether a transport stream is 188 or 204 byte format IQ Files DAB and DMB T mode In DAB and T DMB mode the Modus accepts pre stored streams of 8 or 16 bit and Q data at a clock rate of 2 048 Mbit s For continuous looping it is advisable to terminate data files on an integer increment of 188 Bytes File Directory and Selection l y A file selection dialog is provided for loading the XML config settings file see below and selecting stream files This presents the Compact Flash card and the Hard Disk in a tree structure and it is possible to select the correct file by moving up and down the tree and expanding nodes where necessary Both the settings file and stream files may reside anywhere on either disk The following keys are used to navigate OK Press this to enter the file selection dialog When a directory is highlighted pressing OK will expand or compact the display of that directory When a file is high
19. e 4970000 gt An MPEG2 transport stream source There may be up to two TS sources When using DVB T H modulator channel 0 is connected to the HP input of the modulator channel 1 is connected to the LP input of the modulator Channel 0 1 Input CF ASI1 ASI2 SPI Filename The 8 3 DOS style filename of the file to be played BitRate The bitrate that the stream should be played out at in bits second lt Modulators gt This section contains a list of the modulators supported lt DvbthModulator Mode 640AM GuardInterval 1 16 Bandwidth 8MHz Hierarchy alphal FFT 8k CellId 204 gt The DVB T H modulator Mode QPSK 16QAM 64QAM QPSK not allowed in hierarchical modes Guardinterval 1 4 1 8 1 16 1 32 Bandwidth 5MHz 6MHz 7MHz 8MHz Hierarchy none alpha alpha2 alpha4 FFT 2k 4k 8k 4k only for DVB H mode Cellld decimal integer only used in DVB H mode Deepinterleaving 0 DVB H deep interleaving off or 1 DVB H deep interleaving on FFT mode must be 2k or 4k lt Channel Name HP CodeRate 1 2 MpeFecFlag 1 TimesliceFlag 1 gt The DVB T H modulator is fed with two channels HP and LP When not performing hierarchical modulation only the HP channel is used Name HP LP CodeRate 1 2 2 3 3 4
20. ese will currently be running version 1 x x of the software If in doubt please contact Cell Metric Released Build Major new features 1 26 0 Fix to display of directory structure on CF card and Hard Disk It is now 14 October 2009 possible to navigate directory structures Known issues Occasionally when playing from mechanical hard disk at high bitrates the playout stops This problem does not occur when playing from SSD solid state hard disks 1 25 0 Additional serial port commands 3 July 2009 Known issues Occasionally when playing from mechanical hard disk at high bitrates the playout stops This problem does not occur when playing from SSD solid state hard disks 1 24 2 Fix to occasional issues when Modus would fail to mount an internal harddisk 10 June 2009 Australian VHF and UHF frequency bands added Burner application now supports serial ports from COM1 through to COM19 Known issues Occasionally when playing from mechanical hard disk at high bitrates the playout stops This problem does not occur when playing from SSD solid state hard disks 1 24 0 Minor fix to calibration procedures DVB TH code rate now defaults to 3 4 previously 5 6 14 May 2009 Known issues Occasionally when playing from mechanical hard disk at high bitrates the playout stops This problem does not occur when playing from SSD solid state hard disks 1 23 0 Fix to USB problem introduced in build 1 20 0 Fix to ASI problem introdu
21. ettings are accessed by scrolling down the menu using the up down buttons Selected menu items are in reversed graphics Settings are changed by scrolling fields or digits using the left right buttons of the 4 way switch or the rotary knob then pressing OK to confirm Stream play out can only be activated once an appropriate file has been selected for play from the stream control panel you need to manually enter the stream bitrate into the Ul y Play out is activated by pressing the up key of the 4 way switch from the player default menu Pause is the down key You can always get to the play menu by pressing Cancel twice Once you have selected appropriate modulation settings they can be saved by scrolling to the Housekeeping screen and selecting save settings DVB H amp DVB T Control Screens are System O Allows selection of the mode of operation of the unit Select from o DVB H o DVB T o IQ streaming o TS Player O Hierarchy o None o Alpha 1 o Alpha2 o Alpha 4 TS Source CeLLMetric Modus3 RE O Allows selection of data source Select from o Compact Flash memory card o Hard Disk If option fitted o ASI 1 in o ASI 2 in o SPI LVDS in o PRBS 12 N23 Pseudo Random Binary Sequence generated internally by the Modus 3 which is then modulated and transmitted O Filename The filename of the data file to be transmitted O Select data rate for play out Data rate for play out in Kbits s If the selected
22. hat Modus expects i e DTR and RTS One USB adapter we have successfully used is this available here http www directusbstore com cnb shop directusbstore productID 490 amp o0p catalogue product_info null When installed this product will typically make the serial port appear as COME Procedure Connect the serial cable from COM1 or COM2 on the PC to the rear serial port connector on Modus Open a DOS box on the PC and navigate to the directory that the Modus Burner application and download image have been placed Type the following burner COM1 lt image name gt Where COM1 is the serial port on the PC which is connected to Modus Other COM ports may be 20 also be used lt image name gt is the name of the image to be burnt into Modus For example modus_1x8x1 mot This will programme the flash which takes around 5 minutes As it is programming it displays the number of bytes successfully burnt 21 Modus 3 Typical RF Performance The following plots give indicative results of the RF performance that can be expected from the Modus 3 modulator Modulated Broadband Spectrum 22 8K Modulated DVB COFDM 23 Appendix A Serial Port Remote Control XML Config Files XML Band Files Information contained in this document is based on version 1 9 5 of the Modus 3 software It is likely to be extended and possibly changed in future releases Serial Port The Modus serial port is used for three purposes
23. he host PC to the Modus storage devices A When the Modus 3 is connected to a host PC via the USB interface playout is disabled to prevent memory contention issues which may occur if the Modus 3 and host PC attempt to access a stored file This is indicated by the RED Rec LED flashing on the front panel To play a file disconnect the USB interface Remote Upgrade BASEBAND IF INTERFACE 220 Se ee LA OQO E 7 ASI2 out Ce OG 10MHz Ref 1PPS O Modus 3 can be upgraded remotely using the 9 way RS232 port on its rear panel Upgrade instructions are as follows Required Modus 3 unit with power supply The Modus Burner application and image to be downloaded These are normally supplied zipped and therefore will need to be unzipped and copied to a clean directory on the PC The image will have a MOT extension Motorola S record file format A fully wired straight through serial cable sometimes called a modem cable 9 pin socket to 9 pin plug with each pin connected to the same numbered pin at the other end A PC with a 9 pin serial connector and running Microsoft Windows XP the tool should work with other versions of Windows but has not been tested However some PCs no longer come with serial ports We have found that it is possible to use some of the USB to serial converter cables that are on the market although some of them will not work because they do not correctly control the extra signals t
24. ital RF radio This data is programmed into E memory on the radio module during manufacture and is not accessible to the user DVB T and DVB H Operation Mode Modus 3 has a intuitive LCD based graphical user interface that allows setting of all play out and modulation parameters Individual control screens are context sensitive and will only be displayed if appropriate to the modulation mode chosen for the unit Scrolling the control screen right Right Arrow directly follows the logical signal flow modulation processing from data source to modulation to RF up conversion All settings on the Modus 3 are accessible from the front panel control keys and the rotary control RF OUTPUT Frequency T3s0000 kHz Band LIK TU Channel Bandwidth vel CELLMEetric Modus3 a _ _ USB Compact Flash HDD Active Play Highlight using down arrow Modify with L or R arrow or Knob OK to Set y Modus 3 always defaults to the player screen on power up To quit this screen hit Cancel this takes you to the control menus which are scrolled left or right LiiMetric Modusz BS Modus 3 control screens scroll left or right across the LCD display and are selected by the right or left hand control buttons of the 4 way round switch D Quitting any screen is actioned by pressing the Cancel button l y Accepting any setting is actioned by pressing the central OK button of the 4 way switch Once on a settings screen individual s
25. l all Elements and Attributes start with a capital letter whereas most attribute values start with a lower case letter Numbers may only be expressed in decimal hexadecimal is not supported Example lt xml version 1 0 gt lt Configuration Product Modus Version 1 gt lt Device SoftwareVersion 1 0 10 SerialNumber 0000 OE9D 24A9 gt lt System Mode DVB H player AutoPlay 1 gt lt Sources gt lt IqSource Channel 0 Input CF Filename STREAM IQ SampleRate 2048000 Headroom 6 000000 BitDepth 16 gt lt TsSource Channel 0 Input CF Filename N92 TRP BitRate 4970000 gt lt TsSource Channel 1 Input CF Filename HD12SD LP BitRate 17564000 gt lt Sources gt lt Modulators gt lt DvbthModulator Mode 640AM GuardiInterval 1 16 Bandwidth 8MHz Hierarchy alphal FFT 8k CellId 204 DeepInterleaving 0 gt lt Channel Name HP CodeRate 1 2 MpeFecFlag 1 TimesliceFlag 1 gt lt Channel Name LP CodeRate 3 4 MpeFecFlag 0 TimesliceFlag 0 gt lt DvbthModulator gt lt IqModulator gt lt TsModulator gt lt Modulators gt lt RfOutput Power 24 5 REOn 1 Frequency 506000000 Band UK UHE Spectrum normal Alc 0 gt lt loOutput Veme e555 gt lt Configuration gt Description lt xml version 1 0 gt This must be present unchanged lt Configuration Product Modus Version 1 gt The lt Configuration gt element encloses all the configur
26. lighted pressing OK will select that file LEFT ARROW Pressed from within a directory this collapses the display of its contents RIGHT ARROW Expands a directory CANCEL Returns to the previous menu without making any changes UP and DOWN ARROWS Moves up and down the list of files and directories Compact Flash Card Types and File Sizes A Modus 3 is qualified for use with SanDisk Extreme IIl Compact Flash cards Other makes of Compact Flash card may work with the unit but have not been qualified by CellMetric Access speeds of at least X133 are required to enable full bandwidth streaming of transport stream or Q files Modus 3 supports individual file sizes of up to 4GByte limit is set by its FAT32 filing system The maximum Compact Flash card size supported is 16GByte Hard Disk File Systems A If the optional 100GByte hard disk is fitted to the Modus 3 8 bit I Q files and DVB Transport stream files can be stored and played from the disk up to a maximum individual file size of 4 G Byte Maximum data rate for I Q and transport stream playout from the hard disk IS 8 bit I Q files at up to 2MSPS 16 bit 1 Q files at up to 1MSPS DVB T and H with 188 byte packets at all legal rates DVB T and H with 204 byte packets at up to 20Mbits s Q QOO XML File Systems Modus 3 uses XML files for a number of configuration tasks These include O Auto configuration of transport stream and 1 Q files to preset the Modus 3 modulator p
27. nectors supporting Hierarchical modulation Optional Synchronous Parallel Interface SPI 25way D connector Compact Flash Memory Card 210 W x 74mm H x 220mm D 2 5Kg Appendix D Use of the Agilent ESG Vector Signal Source as an external RF precision up converter i ger ae a annn TA a 2 oo Wii i 3 Wo 2 t E nasd m por FA Te A a es Lf p l st To S ee FS Bae 500 RF 8 ega 000 300 500 eA gt e Modus 3 has differential Q analogue base band RF outputs which can be used to drive a external I Q Vector Signal Generator like the Agilent ESG C to provide a reference quality RF output with 0 1db resolution and very low phase noise The I Q outputs from the Modus 3 are of 16 bit resolution and are the same Q data used internally by the Modus 3 up converter stage The Q outputs are 50Q output impedance DC coupled and will drive up to 555mV rms into a 500 load This I Q level is controllable from the Modus 3 I Q Direct Output screen by scrolling down to highlight the RMS voltage range and adjusting using the front panel rotary control CELLMetric Modus3 24 To drive the ESG C the Q and I outputs should be directly coupled to the ESG C analogue I Q inputs with the ESG set to external analogue I Q modulation mode 30 Modus 3 Software Release Note NB This build is only suitable for Modus products that contain the 4000 series FPGA Th
28. o Card 4 1 6 3 Uses Radio calibration data 26 January 2007 Modus 3 User Guide Version 1V2 8 CellMetric Ltd 2010 33
29. ound attribute values are always needed All Elements must be closed eg lt Bands gt Note that everything in the file is case sensitive In general all Elements and Attributes start with a capital letter whereas most attribute values start with a lower case letter Example This example file shows how to make a band called UHF which has presents two channels Ch21 at 474MHz and Ch22 at 482MHz lt xml version 1 0 7 gt lt Configuration Version 1 gt lt Bands gt lt Band Name UHF BandBottom 466000000 BandTop 866000000 ChannelFrom 4000000 ChannelTo 3999999 gt lt Channel Name Ch21 Frequency 474000000 gt lt Channel Name Ch22 Frequency 482000000 gt lt Band gt lt Bands gt lt Configuration gt Description lt xml version 1 0 gt This must be present unchanged lt Configuration Version 1 gt The lt Configuration gt element encloses all the configuration data Version This should be set to 1 lt Bands gt The lt Bands gt element encloses one or more frequency band descriptions lt Band Name UK UHF BandBottom 466000000 BandTop 866000000 ChannelFrom 4000000 ChannelTo 4000000 gt The lt Band gt element provides the description of a particular band including the list of Channels within that band There may be specifications for as many bands as needed subject to Modus memory constraints Name This text identifies the n
30. repeated as many times as necessary I LSB I MSB Q LSB Q MSB Together the LSB and the MSB make a 16 bit signed value The sample rate of the IQ stream should be 2 048MSPS and cannot be significantly changed on the Modus 3 units for DAB based systems The file should have the suffix IQ The compact flash should be formatted using FAT32 with a sector size of 512 bytes and a minimum cluster size of 8 sectors more would be better sincos exe This utility can be supplied by CellMetric and creates an IQ test file such that 16883 5 cos 2 PI Fm t Q 16383 5 sin 2 PI Fm t Where Fm is 200kHz When modulated to RF such an IQ file will generate a single peak at the carrier frequency PLUS Fm assuming that the sampling frequency is set for 2 048MSPS The output file is always called SINCOS IQ USB Mass Storage Class Device File O Back a pi Search Address W My Computer Folders E Desktop My Documents 5 My Computer Gat Local Disk C3 25 DRYCD Ds 28 DVD RW Drive Ei aw Modus 3 CFs Edit View Favorites Tools Help Modus 3 Implements a USB complaint plug and play slave device This interface makes the Modus 3 look like an external mass storage device when connected to a host PC Both the internal hard disk and the Compact Flash card will look like storage devices on the host PC and will support drag and drop of transport stream or I Q files from t
31. rt for simple RS232 control protocol 15 May 2007 Ul enhancements including messages indicating various events eg Saving configuration data or unable to play stream The UI will now only show streams with the correct extension to be selected Transport streams should have a TS extension MPG MPEG and TRP also permitted IQ streams should have a IQ or IQ8 extension BIN also permitted Additional frequency bands added for Japan and Korea 1 9 3 Modification to radio software to eliminate problem with radio occasionally 27 April 2007 failing to start up 1 9 2 Modifications to RF level control algorithms to reduce overloading of 26 March 2007 intermediate stages in some cases and hence intermodulation products Disables DVB T H modes if lock chip not fitted 1 9 1 New FPGA image fixes intermittent ASI1 output on some boxes 23 March 2007 Burner application improvements including the ability to work with more flash parts Additional built in diagnostics including flashing LED sequences on fatal errors RF level control added to main screen IQ signal headroom may now be specified when in IQ playout mode 1 8 1 New FPGA image fixes loss of DVB T H modulation when continually 20 February swapping between modes 2007 1 8 0 Direct IQ DAC output enabled 9 February 2007 Improved RF level control algorithms to improve MER Auto play feature selection of 10MHz reference source internal or external Support for Radi
32. s overload protected Modus 3 can be powered from a 12v car battery with terminal voltage in the range 12 to 15V at 3A Front Panel The Modus 3 has the following front panel controls and connectors Play OK f Frequency Ts0000 kHz f Band Channel eee 0 Rotary Control Left Scroll o P Push for RF CELLMetric Modus3 P2 On Off Compact Flash Right Scroll Cancel Pause Compact Flash Rear Panel The Modus 3 has the following rear panel connectors O RF Out 100 MHz to 2 2 GHz O VQ Differential out O 10MHz Reference in 1PPS timing reference in ASI 1 amp 2 in ASI 1 amp 2 out LVDS SPI In LVDS SPI Out USB 10 100 LAN Not currently enabled and not part of released 1 0 RS232 Serial Port Only used for software upgrade and remote control 12 V DC Power in Earth stud OOUOUUOUOUUOUOUU 16 Bit I Q Baseband SPI Input amp Output Outputs RF OUT 100MHZz to 2 2 GHz LVDS IN BASEBAND AIF INTERFACE U Car RF out ia r gt Q LVDS OUT N F x O i MODUS3 EARTH s am o smo C g www cellmetric co uk f ASI1 In ASI1 LAN 10 100 out ASI2 in ASI2 out 10MHz RefIn pps Ref In RS232 USB 2 0 Remote Upgrade ASI IN and OUT amp Control Hierarchical RF Antenna The Modus 3 Demo Kit is supplied with a 500 wideband antenna In many countries it is illegal to transmit RF signals without an appropriate broadcast transmission licence CellMetric strongly recommend that
33. tput Output channels UHF Output Offset kHz offset Output frequency accuracy temperature range Output Band III amp L Band Signal output level Output Impedance 50 Q Resolution Repeatability Output RLR Spectral flatness Gain Taper Intermodulation products Modulation DVB T H DAB FFT Mode Modulation Guard Interval FEC Bandwidth Hierarchical Code support Spectral Polarity Transport Stream Max Bitrate rate 100 to 260V 47 400 Hz AC 0 to 40 C 100MHz to 2 2GHz resolution 1KHz 470 to 862 MHz 62 5kHz minimum with 166 66 capability better than 3ppm over 174 to 240 MHz 1452 to 1492MHz and 1675 MHz OdBm nominal to 110dBm 0 5dB typ 1dB typ Better than 10dB typ Better than 0 5dB typ Across any 8MHz channel Better than 2dB typ Across the UHF band Better than 45dBc typ In channel 60dBc typ Out of channel EN 300 744 EN 300 401 I Q Streaming Mode 2k 4k 8k QPSK 16 QAM 64 QAM 1 8 1 16 1 82 Y2 2 3 3 4 5 6 7 8 1 7 5 6 7 8 MHz Hierarchy 1 2 4 16 QAM 64 QAM Normal or inverted 31 67Mbits sec maximum usable Interfaces External Frequency Ref In Timing Ref RF Out Q Out Serial Transport Stream In Transport Stream In Removable Memory Installation Desk top case Weight 29 10MHz SMA Connector 1PPS SMA Connector SMA Connector 500 8 16 Bit Differential I Q Output 500 USB 2 0 Slave Dual DVB ASI BNC con
34. y Input o ASI2 In Hierarchical Low Priority Input o ASI1 Out Hierarchical High Priority Output o ASl2 Out Hierarchical Low Priority Output O SPI Interface synchronous Parallel Interface o LVDS IN o LVDS OUT O 1Q interface I Q Baseband Interface 50Q output Impedance o Q Q O O O O RF Interface Main RF output 0 dBm to 110 dBm 500hm O USB Interface USB Type B Connector supporting mass storage class O Ethernet 10 100Base T Interface This Interface is not enabled on Modus 3 and is reserved for future use by CellMetric O RS 232 Interface 9 Way D RS282 with full handshake used for firmware and software upgrade of the Modus 3 and remote control OM 10 MHz Reference input External frequency reference input If selected from the Modus 3 user interface the Modus will lock its internal operational clocks to a precision 10 MHz reference clock O 1PPS Input One Pulse Per Second input used to lock the output RF transmission to Single Frequency Network SFN transmission if the SFN adaptor option is fitted and enabled A detailed system diagram of the functional hardware of modus 3 is shown below Modus Project System Architecture Rev 2 0 Permanent sample stream storage on CF or USB stick
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