Multi FM Modulator User's Manual for Generator
Contents
1. 9 Transmit RadioText Group 24 64 characters v V send Text A B flag Rate 0 45 4xA Fix Schwyz quakt J rgen bl d vom PaG 4xB Playing 0 from 1 Fix Schwyz qu kt J rgen bl d vom Pali Playing Frozen from Madonna 41 32 transmit two alternating texts 4 B V Transmit enhanced RadioText Group Unicode coding UCS 2LE A 41 00 v F RadioText applies to eRT Rate 0 45 3xA Crewb ew 3THX MarkHx bPaHuyscknx bynok Aa BbINeH Yard 4xB Zaadt gesla jazn 0APlaying 0 From 1 CreWb E 3THX MArKHX bpaHuysckHx bynok aa BbINeH Za gesla jazn Yard Playing Frozen from Madonna 54 51 V Transmit RadioText tags Tag Text 7A vj 0 55 0 Item Title v Frozen E Item toggle bit 1 Item Artist Madonna 4 Item running bit Frl E JEJ Modulator v21 24 channels Remote control Figure 9 RadioText configuration in RDS RadioText can be transmitted as normal RadioText in group 2 or as enhanced RadioText eRT in the ODA extension of the RDS standard with the possibility of using Unicode characters It is possible to transmit both versions simultaneously with different texts but it is uncommon because of the limited bandwidth of RDS Apart from that the RadioText tags effect only eRT in that case as there can be different position and length specifications of the RT tags because2. 8 1 6 Group 3 ODA Open Data Applications ODA groups announce the existence of open data applications that are not defined in the RDS standard Among others those are TMC enhanced RadioText eRT and RadioText Plus RT If no group 3 is sent it is possible that the receiver cannot recognise TMC even if TMC is transmitted in group 8 Transmitting group 3 should be always activated when using ODA for TMC 8 1 7 Group 14 EON Enhanced Other Networks TP 0 off and TA 1 on signals that EON information that refer to at least one other program with traffic information are transmitted Thus RDS receivers can recognize traffic announcements in other programs RDS sources with TP 0 and TA 1 have to refer to a program with TP 1 in at least one EON group In the EON list all data have to be entered either manually channel 0 or the number of another transmitting channel program is entered into the channel field In that case the data is taken automatically from the RDS source of the other channel If the TA flag of the RDS source in the referenced channel is set to TA 1 a burst will be generated 14B groups and the receiver should tune to this channel until TA 0 is recognized again The number of burst groups 14B and their duration can be set separatly for TA 1 and TA 0 If the number is set to 0 no burst will be sent If the duration is O or too low to transmit the number of burst groups in time no other groups will be sent between th
3. File Add at least three MP3s or Ogg Vorbis files ogg with Files Drag amp Drop each one of the files into one of the audio sources Choose the Channel tab Activate channel 1 2 and 3 with the mouse or by pressing the keys 1 2 and 3 Set the audio source of channel 1 to Audio 1 of channel 2 to Audio 2 and of channel 3 to Audio 3 OND OH FP WN FS When you check with a receiver each of the frequencies Figure 15 should play the selected audio file The tracks are repeated continually 87 70 MHz RDS 1 H o e ocB 40 lAudio 1 88 50 MHz lt no RDS gt e 0 aB 40 lt noaudo gt 89 70 MHz RDS 1_ amp A 0dB 40 Au io 3 Figure 15 Play out three audio files on three channels 25 maintech GmbH 11 3 Automatic Change of channel via AF Alternatice Frequencies are transmitted in the RDS signal of a channel In this example the automatic change to a stronger channel is simulated For this the example from paragraph 11 2 is extended An RDS source that transmits the AFs of the other channels is added to the three channels When the tuned signal is attenuated an AF enabled receiver should switch to another stronger channel Open the example from paragraph 11 2 and do the following steps Choose RDS Sources and add a source with Source Change to tab Alternative Frequencies Activate Send AF in G
4. OE RDS Am RDS sources Basic settings I Alternative Frequencies RadioText Packet Statistics RDS 1 Packet counter RDS 2 Channel 8 RDS source 3 z bed Save log A tine E Raw M Group Ort Teram Eor crc ROSS o Group Packets Percent Rate 16 43 55 626 d316 e191 532d c3l4 14A 010 2 u 16 43 55 803 d3l6 8188 0068 Za63 8A 001 1 C 0A 1131 40 7 0 225 16 43 55 980 d316 8188 0068 2a63 8A 001 1 16 43 56 068 d316 e19Z 3120 d314 14A 010 a W 1A 23 0 8 10 16 s 16 43 56 231 d316 8188 0068 Za63 8A 001 1 M34 45 16 5 30 5 16 43 56 409 d3ls 8198 0068 Za63 8A O11 1 16 43 56 587 d316 8188 0068 Za63 8A 001 u 8A 1130 40 6 0 225 16 43 56 676 d316 e193 2020 d314 14A 010 w 144 453 16 3 0 545 16 43 56 854 d316 8198 O0e8 Za63 SA O11 Z 16 43 57 031 d316 8188 0068 6a63 8A O01 1 Sum 2782 100 0 0 095 16 43 57 118 d316 eldd 5001 d314 14A O11 1 16 43 57 282 c3l6 8188 0060 Za63 8A 001 3 16 43 57 461 d3le 8188 0068 Za63 8A 001 1 16 43 57 637 d316 8188 0068 2863 8A 001 1 16 43 57 727 d316 el3d 5001 d714 14A O11 1 16 43 57 905 d216 8188 0068 Za63 8A 001 1 16 43 58 069 d3le 8188 8068 Za63 8A 001 2 16 43 58 156 d316 e194 59cd d3l4 14A 010 16 43 58 334 d316 8188 0068 2863 8A 001 1 16 43 58 511 d3l amp 8188 0068 Za63 8A 001 16 43 58 689 d717 8188 0068 Za63 8A 001 2 16 43 58 778 d316 e190 5244 d315 14A 010 16 43 58 956 5316 3138 0068 2a63 8A 001 3 16 43 59 120 d316 818a 0068
5. REG chinfo 1 rdslog The RDS Log can be configured with SET rdslog time raw data group time is the time stamp raw are the complete 13 Bytes of an RDS block with CRCs data are the 8 Bytes RDS data without CRCs and group is the data extracted RDS group 2 maintech GmbH 10 3 Modulator Status All commands apart from HELP GET and VER produce an OK in case of success or an Error If you get neither OK nor ERROR you have to assume that the UDP packet is lost The command has to be repeated Starting from an empty NEW or a pre defined LOAD project the status of the modulator is always known to the remote control Please note If you make alterations in the generator s GUI simultaneously to the remote controlling the related events have to be registered by the remote control REG for their recognition 10 4 RDS Remote Control The Multi FM Software listens on TCP ports 4001 to 4024 for RDS data to be send out over channels 1 to 24 All formats that can be created in the Packet Statistics as RDS Log s 8 5 2 can be used The reply consists of a counter and the current buffer fill state of the RDS queue The counter gives the number of packets received for the current connection A fill state 0 means there are no more packets to send The internal buffer of the modulator hardware can hold 19 packets less than two seconds sending time A higher fill state means there are more packets waiting
6. 2a63 8A 001 2 16 43 59 208 5316 e191 532d d315 14A 010 1 16 43 59 384 d316 8188 0068 aa63 8A 001 2 16 43 59 563 d3l amp 8188 0068 Za63 8A 001 p 16 43 59 652 d316 e192 3220 d315 14A 010 1 _ vi x RDS log transmitted Modulator v21 24 channels Remote control Figure 10 Packet statistics The packet statistics display the sent RDS packets itemized in groups for one channel at a time using the currently chosen RDS source When you have chosen the relevant channel statistics and log will start 8 5 2 Save RDS Log File The log can be filtered by choosing several groups Additional information e g timestamp group or number of CRC errors can be displayed and logged too The log can be saved as text file afterwards you can send this file repeatedly see paragraph 8 4 In Raw format the CRC values are also stored 13 bytes 8 databytes 4 x 10 bits CRC 18 maintech GmbHBEB 9 TMC Sources Project Modulator Help Channels audo GB ros A TMC LTN 1 SID 0 Gap 3groups 0 45 v AFI TMC 1 MGS Y International National E Regional E Urban Repeat 3x TMC messages Deviate Direction Extend Event Duration Location 1 No Don 3 2 undefined 7 10849 Message ix Remove Modulator v21 24 channels Remote control Figure 11 TMC generator The window is built analogously to the RDS
7. N files list of RDS log files to play out instead of using the generator tmc N TMC message list of TMC Source N Example Description get rds 1 eon list all EON entries add rds 1 eon 0 d311 1234 add one EON entry set rds 1 eon 2 0 d311 5 6 7 8 change EON entry 2 if exists del rds 1 eon 2 remove EON entry 2 if exists set rds 1 eon O af 958 1030 set AF to 95 8 and 103 0 MHz for EON entry 0 add rds 1 eon 0 af 1026 add 102 6 to AF list of EON entry 0 del rds 1 eon remove complete EON list del rds 1 afs remove all manual set AFs set rds 1 afs 958 1026 set two manual AFs 95 8 and 102 6 MHz set rds 1 afr 958 mark AF 95 8 MHz as regional add tmc 1 1234 add one TMC message in TMC Source 1 del tmc 1 remove all TMC messages in TMC Source 1 10 2 Channel Info RDS Log In the channel information status changes of the channels 1 24 are displayed These are as follows playlist position 0 1000 chinfo playpos currently played song chinfo playing current samplerate chinfo playrate minimum distance in MHz to the next sending channel chinfo dist RDS Log chinfo rdslog n with n RDS source number number of sent RDS blocks 13 Bytes chinfo rdscount n These values can be read only but cannot be set Example To get the playlist position of a song from 0 start to 1000 end REG chinfo 1 playpos Example To monitor song changes of all channels REG chinfo playing Example To get the RDS Log of channel 1
8. O stereo radio text tag 2 values radio text A group 2 radio text B group 2 enhanced radio text C enhanced radio text D program type name 1 program type name 2 tmc application id should be 0xCD46 or 0x0D45 used tmc source id radio text plus ODA group radio text plus message bits radio text plus items bits radio text mode amp 1 radio text amp 2 enhanced radio text gt 2 amp 3 unicode mode enhanced radio text group enhanced radio text message bits ps scroll mode amp 8 scroll gt 4 1 repeat amp 7 rate af bits 1 use 2 auto 4 manual 8 A B 16 bytes radio text A repeat radio text B repeat radio text C repeat radio text D repeat program type 1 repeat program type 2 repeat group 4 UTC zone hour offset amp 32 mins amp 64 days group 4 minute offset group 4 fix date days since 1 3 1900 error generator O invert 1 set to 0 2 set to 1 amp 128 on bit error rate for error generator fix bits 1 crc 2 group 4 pi amp 128 exact ber bits per group group 1 radio paging 5 bits group 1 slow labeling code group 1 program item number play log files on off play log file list eon data of exact 6 hex values Channel PI PTY TP TA Link eon program service name eon alternate freq list x10 876 87 6 MHz 16100 1610 kHz group 0 15 transmission rate set to 4 to send group each 0 4 seconds tmc source enabled disabled tmc source name location table number service identification bits
9. amp 192 GAP mode amp 32 AFl amp 15 MGS immediate group repeat29 table entry of four values duration extent event place
10. at the output At the bottom of the window the status line displays the hardware status green indicator for an existing network connection to the hardware hardware version and number of activated channels The status line also contains an indicator for remote control For every channel the main window contains a configuration panel A detailed description of the configuration options is in chapter 6 94 30 MHz lt no RDS gt a M i 0 dB 40 40 lt no rs 101 50 MH 0 amp e 0 dB 40 0 aud Ole 0 dB 40 89 70 MHz RDS 1 95 50 MHz lt no RDS gt T N o dio 2 RDS source FM Gaga AN Of p a mu N THC source TMC oj lt no 0 dB _ 40 Bit error rate 2 89 90 MHz lt no RDS 0 dB 40 Playlist 90 90 MHz lt no RDS gt 4 0 dB 40 lt no audio gt yee zno audio gt o aB 40 l __ 99 80 MHz _ ods 40 Modulator v21 24 channels Remote control Figure 2 Multi FM channel overview 5 Project Settings The Multi FM software manages all settings in a project that can be saved and reloaded Thus it is possible to switch between complete sets of parameters and to prepare different test scenarios and process them systematically maintech GmbH 5 1 Creating Saving and Reloading Projects e Choose project New or Ctrl N to set up a new empty FM project e Save a project with Project Save Ctrl S under a new name e Open an existing
11. in the software to be send to the hardware An error will be signaled with fill state 1 the RDS packet with number counter was discarded Action Send Reply Text D314 1234 5678 9ABC d361d283634e4d361398c4830b 0B Test Test 425 51 counter 425 fill state 51 426 52 427 1 51 noRDS The example Client software can open an RDS Log file and send it to any port for demonstration purpose 93 2 maintech GmbH 11 Application Examples The following examples provide a step by step explanation on how to create different FM projects All examples can be downloaded from the following URL http www maintech de multifm 11 1 Sending two Sinusoidal Tones on 100 MHz In this example two sinusoidal tones 110 and 220 Hz are sent on channel 1 on 100 MHz Via remote control the following commands are performed consecutively Command Description new 11 1_remote fm Start new empty project set audio 1 used 1 Add and activate audio source set channel 1 idaudio 1 Choose audio source set channel 1 freq 100 Set channel to 100 MHz set channel 1 used 1 Activate channel sinus should be audible set audio 1 frqi 220 Change frequency for the left channel set audio 1 frq2 110 Change frequency for the right channel set audio 1 name Sinus 1 Change name of the audio source set channel 1 mono 1 Set channel to mono channels are mixed get channel 1 Display values optionally get audio 1 Display values optionally In
12. of the different coding The ODA groups for eRT and RT have to be selected differently The identification is transmitted in group 3 see paragraph 8 1 6 8 3 1 Standard RadioText Group 2 Normal RadioText is transmitted in group 2 Up to 64 characters can be transmitted in 2A groups up to 32 characters in 2B groups The coding refers to table E 1 of the RDS standard xxxx creates a single character from the hex value xxxx 0021 becomes 000A a line break 16 maintech GmbH If Text A B is activated the Text A B bit will be toggled each time the RadioText changes This can happen when changing from Text A to Text B or by filling a tag from RT information from a new playing audio file 8 3 2 Enhanced RadioText Unicode There are 3 Unicode variants available Depending on the chosen variant the encoded byte string for character A looks as follows e UTF 8 0x41 e UCS 2LE 0x41 0x00 little endian e UCS 2BE 0x00 0x41 big endian The description in the RDS standard doesn t state explicitly which of both UCS 2 codings table E 2 has to be used Therefore the software features both formats Correspondingly to normal RadioText one can create a Unicode character directly with xxxx With RadioText applies to eRT the RT eRT Flag in group 3A can be set If set the tags from RT are valid for the enhanced RadioText else for the standard RadioText in group 2 8 3 3 RadioText Pl
13. the generator software you will get the same result doing the following 1 Choose menu Project New or Ctrl N and choose a new project name 2 Choose Audio Sources and add a new source with the button Source 3 Set the frequencies to L 220 Hz left and R 110 Hz right 4 Edit the source name from Audio 1 to Sinus 1 5 Choose the Channel index 6 Activate channel 1 by pressing the 1 button or press key 1 7 Click the frequency and set 100 00 MHz with the slider 8 Set the audio source for channel 1 from none to Sinus 1 9 Click the displayed stereo symbol to switch to mono The status display for channel 1 should be similar to 14 using a receiver both tones should be audible 100 00 MHz lt no RDS gt amp Hl 0dB 30 Sinus 1 Figure 14 Channel 1 with sinusoidal tones You can open the created project with a text viewer It should contain the following content 24 maintechs channel 1 freq 100 gain 0 volm 60 idaudio 1 used 1 mono 1 audio 1 used 1 frqi 220 frq2 110 name Sinus 1 11 2 Sending Three Different Audio Files on Three Channels In this example different music tracks are played on three different channels Execute the following step Choose menu project New or Ctrl N and choose a new project name Choose Audio Sources and add three sources with the button Source Set all channels to
14. Repeat the same with enhanced Radio Text 1 Deactivate Send RadioText and activate Send enhanced RadioText 2 Enter You re hearing 0 by 1 in the first line 3 Activate Group 3 in the RDS Basic Settings If you can see no RadioText anymore please change the Unicode coding until the receiver displays the text see paragraph 8 3 2 26 maintech GmbH 11 5 Sending Hex Signs with RadioText In this example any desired hex sign is sent in the RadioText Therefore a new project is created and saved afterwards the Radio Text is changed continually The following commands are performed consecutively Command Description new 11 5_radiotext fm Create a new empty project set channel 1 idrds 1 Choose RDS source set channel 1 freq 100 Set channel 1 to 100 MHz set channel 1 used 1 Activate channel 1 set rds 1 used 1 Activate RDS source 1 set rds 1 rtxt 1 Activate Standard Radio Text set rds i rta 41 42 43 Create RadioText ABC of hex signs set rds 1 2 4 Set sending rate of RadioText group 2 important save 11 5_radiotext fm Save project get channel 1 Display values optionally get rds 1 Display values optionally Afterwards you can create freely chosen RadioText with set rds 1 rta nn mm For example set rds 1 rta 48 41 4C 4CH4FH 20 57 4F 52 4C 44 creates gt HALLO WORLD 11 6 Generating two TMC Congestion Announcements In this example two TMC congestion announcements are con
15. TA Bursts Channel PI PTY PSName TP TA Link AF list 0 55 48 FON 158 3 r m r Ta 1 an TA 1 an 1 D314 10 RDS 1 0000 94 4 Fe SZ 2 D315 11 RDS 2 0000 88 5 1 05 1 05 none D317 13 RDS 4 wv 0000 95 8 102 6 94 3 95 8 9 E5 Tet off 4x Ox 3 2 05 0 0s F Group 0 PS program service name amp AF alternative frequencies PS RDS 3 E scroling 4x 2 Characters 0 2 s E Group 4 UTC clocktime and date zone 1h Time 0 min Date 01 03 1900 2012 02 21 14 21 00 1 h 7 Group 8 TMC I Group 3 ODA TMC source TMC 1 x Fil 0 25 eRT 0000 RT 0000 5 05 E Group 10 PTYN program type name I Biterror generator fe source X Invert bits Bit error rate 1 V per group Correct V Group 7 pr V CRC L Generate RDS stream with bit errors Modulator v21 24 channels Remote control Figure 7 RDS sources The RDS source configuration consists of several parts Each of them has its own tab in the window Basic settings with options like PI PTY PS etc Alternative Frequencies Radio Text e Packet statistics Each RDS source creates a defined bitstream that can be sent on several channels frequencies independently The channel tab shows which RDS bitstream is sent on which channel Bild 2 and allows to set it see paragraph 6 2 If no RDS source is chosen lt no RDS gt no RDS carrier is sent on the channel In all other cases a RDS carrier is generated as well in mono as
16. arl Heinz Schmitt Q Musik Open Music Contest 4 117 Jst 12 099 Files Remove Modulator v21 24 channels Remote control Figure 6 Audio sources You can set up new sources change or delete existing ones in the column Audio Sources A source consists of a name mode of operation and the relating parameters 7 1 Constant Sinus You can set frequency and volume separately for the left and right channel If you choose mono both frequencies are transmitted on both L R channels mixed 7 2 Sinus Sweep Ramp You can set starting frequency end frequency volume and period between start and end The ramp is repeated repeatedly on both L R channels 7 3 Audio Files and Playlists A playlist contains a list of audio files that are played back successively When the end of the playlist is reached playback starts again with the first entry To create a new playlist and assign it to an audio source you have to execute the following steps 10 maintech AA WN e GmbH Create a new playlist in column Playlists with the plus list button Change the name of the playlist if necessary doubleclick the name or press the F2 key Add several files to the playlist in the right column Files with the plus files button To assign a playlist to an audio source you have to change the type of the source to File Then the playlist has to be dropped on
17. channel mute channel mono channel devi channel emph channel rate channel auto channel aof channel att channel rds channel idrds channel idaudio chinfo playpos chinfo playing chinfo playrate chinfo dist chinfo rdslog chinfo rdscount Parameter audio used audio name audio type audio frql audio frq2 audio voll audio vol2 audio time audio file playlist name playlist Range 0 1 87 5 108 MHz 60 0 dB 0 100 0 1 0 1 0 130 kHz 0 1 2 Hz 0 1 1000 1000 dB string string link rds link audio 0 1000 string Hz MHz string int Range 0 1 string 0 1 2 10 22000 Hz 10 22000 Hz 0 100 0 100 0 60 s string string string list Description toggle channel on off transmission frequency japan 76 90 gain from 0 full power to 60 noise floor audio pcm volume linear mute audio channel is 1 mono or 0 stereo deviation preemphasis O none 1 50 2 75 us sample rate 32000 44100 or 48000 Hz auto sample rate change on song change atttenuation offset atttenuation unit rds file to replay used rds source id used audio source id current playback position current playing song filename current samplerate minimum distance in MHz to next transmitting channel transmitted RDS Log of RDS Source number number of transmitted RDS blocks one block 13 bytes Description audio source enabled disabled audio source name audio type O sinus 1 ramp 2 fi
18. d 101 Al L Stau stationary traffic 102 1km Stau stationary traffic for 1 km 103 2 km Stau stationary traffic for 2 km Figure 13 TMC event search 20 maintech GmbH 10 Remote Control Remote controlling the Multi FM Generator software is possible by connecting to TCP port 1248 With a simple Telnet program e g Putty in Telnet mode one can send commands and monitor events On request a more comfortable client software with a simple command history and event management is available The following commands are implemented Command Description HELP key Show information about a key e g help rds 1 pty REG key Register events for a key i e adjustments are monitored UNR key Do not monitor events for a key any more GET key Output the value of a key SET key value Set the value of a key on the new value value ADD key value Add a list entry DEL key Delete list entry or complete list NEW file Create a new empty project with the name file DIR path mask List files in directory path e g dir fm LOAD file Load project with the name file SAVE file Save project under the name file VER Show the versions of software generator and hardware A key always has the format g w with g group number or range n m 0 lt n lt m lt 25 and w value Kommando Beispiele Bechreibung get channel 1 freq show frequency of channel 1 get audio 2 file show file or playlist name of Audio Source get r
19. ds 3 ps show Program Service Name of RDS Source 3 set channel 1 3 5 used 1 turns the channels 1 3 4 and 5 on get lists all currently available groups sources with numbers get channel 1 list all values of channel 1 get channel 1 3 list all Values of channels 1 2 and 3 dir lists all project files in the current directory help channel 1 volm show a short description about this key channel 1 volm channel audio pcm volume linear 0 100 If a unknown command is entered a list of all commands will be shown valid commands REG UNR GET SET ADD DEL NEW LOAD SAVE DIR HELP VER If a parameter of a command is missing a short description will be shown f i for SET set key data example SET channel 1 freq 88 For a list of all available parameters and their description see chapter 12 The paths for the commands DIR NEW LOAD SAVE can be set absolutely C Users or relatively fmfiles to the open project file Important All character strings have to be sent as UTF 8 code 21 s maintech GmbH 10 1 List Management The commands ADD SET and DEL are used to manage lists List Key Description playlist N song list for playlist N rds N af sending AF list of RDS Source N read only rds N afs manual AF Alternative Frequencies list entries rds N afr regional AF entries within manual AFs rds N eon EON value list rds N eon af AF list of an EON entry rds N rttag RadioText tag list rds
20. e COM port the MAC address will be displayed Fill in host IP and port number for the modulator Confirm by Save and Close The IP address of the computer can be displayed on the command prompt with ipconfig The modulator has to be assigned an IP address in the same network range maintech oR WN Hm GmbH Config via R5232 on COMm2 USB Serial Port PLL Offset 1 300 Hz PLL Offset 2 200 Hz IP address 10 0 11 231 Connect via network to Port 1234 a IP 10 0 11 231 MAC 00 22 2E 03 00 08 Port 1234 Ca De el Figure 1 Building up a network connection with the Modulator Connecting the Modulator via Network Start the generator software Choose menu Modulator Connect or Ctrl O Fill in host IP and port number of the modulator Click Search board button with binoculars icon and choose the modulator with a double click Confirm the selection by Connect and Close See figure 1 for examples of the Connect Window 3 3 Calibrating PLLs The device design is based around two PLLs that are in charge of the lower and upper half of the output spectrum To avoid a gap in the middle of the spectrum these two PLLs have to be aligned to each other This alignment also is necessary to remove the absolute offset of the output frequencies All devices are properly aligned during manufacturing and testing by maintech but it can be repeated by the customer if needed T
21. e burst groups A burst can be triggered by toggling the TA flag of the RDS source in the linked channel or if no channel is given 0 directly by the TA entry in the EON table row 8 1 8 Error Generator The error generator creates intentional bit errors in the transmitted RDS data stream This function enables the simulation of difficult receiving conditions in the lab According to the configured error rate bits are either inverted or set to constant 0 or 1 If the error rate is set to per group the same number of bits are changed in every RDS group One RDS group consists of 104 bits so an error rate of 1 means about one bit per group 14 maintech GmbH After the bit errors have been inserted certain parts of the RDS group can be rectified again These parts are the Pl code the current group and the CRC This way one can transmit incorrect data with correct CRC to the group related receiver parts as a test This possibility should help in finding software errors in decoder parts that get the data only after the CRC check and therefore cannot receive data errors under normal conditions 8 2 Alternative Frequencies AF Project Modulator Help O Channels RDSsources Basic settings Alternative Frequencies RadioText Packet Statistics F Group 0 Transmit alternative Frequencies F Automatic channel operation F manual frequencies 24 OB E Bytes Channel PICode Regional Freq
22. ements At the moment only single group messages are sent each line in the table corresponding to one traffic announcement To search fot a code or event click on either using the right mouse button and select search from the appearing context menu A search for the event Stau meaning traffic jam in German should produce 123 matches A code can be moved from the search dialog to the event or location field using drag amp drop Hammelburg Code Type Area Ref Street Num Country Name Date Info 1443 A10 329 D BY Hammelburg 26 09 07 16 37 00 W rzburg 9150 L3 329 50518 B287 DBY Hammelburg Bad Kissingen 26 09 07 17 06 00 31428 W rzburg 12293 P1 3 1164 7191 AT D BY Hammelburg 05 08 09 07 28 23 60732 60733 26024 22403 P3 37 1443 36031 B27 DBY Hammelburg 26 09 07 17 19 00 22402 22404 26023 26023 P3 37 1443 9150 D BY Hammelburg 26 09 07 17 35 00 26024 22403 582502 26024 P1 3 1164 9150 D BY Hammelburg 26 09 07 17 35 00 26023 31429 12293 50518 11 2 DBY Hammelburg M nnerstadt 26 09 07 16 33 00 W rzburg Figure 12 TMC location search Stau N lt all gt lt ai gt ru lt all gt Q lt all gt lt a gt ic lt all gt Code Zeile N Q T D U C Refer Text 2 48 u AZAID L stockender Verkehr Staugefahr queuing traffic with average sp 23 c52 Tank und Rastanlage Rastst tte geschlossen service area restaura 37 cag Rastst tte wieder ge ffnet restaurant reopene
23. enerated e Constant sinus seperately configurable for left and right channel e Sinus sweep ramp e A single MP3 or Ogg Vorbis file mp3 ogg e A playlist consisting of several MP3s and OGGs maintech GmbHBEB See figure 6 for the configuration of the audio sources Project Modulator Help Channels w sili CD os A Tmc Audio sources Playlists Files drag into playlist or source Sinus 1 Sinus 7 L 440 Hz 100 R 880 Hz 100 Bliss 0 Musik Open Music Contest 4 101 Pornophonieque Sad Robot ogg Ramp 2 440 Hz 100 to 880 Hz 100 Duration 10 s Q Musik Open Music C add to playlist or audio source using dra Audio 3 G 101 Pornophonieque Sad Robot ogg Q Musik Open Music Contest 4 103 Yeathbutnow At second sight ogg Playlist Playlist QifMusik Open Music Contest 4 104 Kitchen Cowboys Schlaflos ogg Qi Musik Open Music Contest 4 107 Lax o Mat Smoke ogg Q Musik Open Music Contest 4 108 Geist Wer wenn nicht ich ogg Q Musik Open Music Contest 4 109 Abzolut Shoes ogg Q Musik Open Music Contest 4 110 Chinese Whisper No clue ogg Q Musik Open Music Contest 4 111 Waste of Time Gewissen ogg Q Musik Open Music Contest 4 112 Velvet June Still ogg Q Musik Open Music Contest 4 113 Paul Simpson Project Show me Q Musik Open Music Contest 4 114 Mistaa Schw ne ogg Q Musik Open Music Contest 4 115 Cre radix Haus No Logg Q Musik Open Music Contest 4 116 Fuzzy Tunes K
24. figured and sent e Create a new project with one channel one RDS and one TMC source e Acticate Group 8 and Group 3 in the RDS Basic Settings e In Group 8 choose TMC 1 as TMC source e Set the Pl Code to D314 see notice in paragraph 9 e Add two traffic announcements in index TMC Sources e Open menu Search Event right mousekey in the traffic announcements e Search for Stau e Pull or enter codes 101 and 352 into the event fields e Open menu Search Location e Search for Kist e Pull or enter codes 10849 and 10851 into the location fields e Activate an channel and choose RDS 1 as RDS source Configure your receiver to display traffic announcements It may be necessary to connect an GPS antenna to your receiver 297a maintec GmbH 12 Parameter List N The following parameters can be changed via the GUI or via remote control The parameters are separated into groups Groups Name channel Channels chinfo Channel information audio Audio Sources playlist Playlists tmc TMC Sources rds RDS Sources Description 1 24 channel number 1 24 channel number read only number of the Audio Source number of the Playlist number of the TMC Source number of the RDS Source To set and get a parameter the number must be provided Parameter channel used channel freq channel gain channel volm
25. ft right arrow keys the frequency can be changed in kHz steps The reach such destionation frequencies as close as possible it may be neccessary to do a calibration of the PLL units s chapter 3 3 It is also possible to enter 958 to set the frequency to 95 8 MHz directly The adjustments of attenuation and volume work correspondingly 6 2 Choosing Audio and RDS Sources Different channels are able to send the same audio or RDS data Therefore the software distinguishes different audio and RDS sources that refer to the channels in the channel overview The mechanism is like a switching matrix which is able to route different input signals to the outputs Clicking the audio or RDS source of a channel opens a list of all available sources The right mouse key opens a menu that allows a quick jump to the configuration page of the chosen source If no RDS source is chosen lt no RDS gt no RDS carrier is sent on the channel In all other cases a RDS carrier is generated as well in mono as in stereo mode maintech GmbH 6 3 Status Icons Muting Channel Editor Clicking the button with the loudspeaker symbol mutes the audio source temporarily the RDS TMC datastream is still transmitted which means that the HF channel stays active Clicking the button with the gearwheel symbol opens the channel editor see figure 5 The channel editor allows the setting of preemphasis frequency deviation sample rate and mono stereo mode The f
26. he realign the PLLs follow these steps 1 2 3 O ON DO Ff Start Multi FM Software see figure 2 Connect service cable to computer USB and modulator RS232 Configure the system to use the European FM frequencies and start two channels one at 93 and one at 103 MHz with the following parameters e No audio e No RDS e Mono e 0 dB attenuation Open the menu Board Connect or press Ctrl O Choose Config via RS232 Choose the correct COM port Set PLL Offset 1 for frequencies lower than 98 MHz Set PLL Offset 2 for frequencies above 98 MHz Save the settings Verify 93 MHz and 103 MHz with a spectrum analyser 11 Start again at step 7 if necessary maintech GmbHE 4 Multi FM Software The Multi FM software is structured in four main categories Channel overview audio sources RDS sources and TMC sources The channel overview functions as distributing matrix for all channel settings audio RDS TMC and for the configuration of the HF parameters As you can see in figure 2 you can switch between the different categories using the tabs in the upper part of the window Right next to the tabs a schematic representation of the output signal spectrum is shown green lines with the expected intermodulation products red parts and a display for the currently chosen VHF frequency range Europe Japan On the right you find the On Air button which enables or disables the HF signal
27. in stereo mode The packet statistics allows analysis of the transmitted bitstream blocks or groups depending on nomenclature It also helps verify that the the information really arrives at the RF signal at the necessary rate Apart from that you can save the created datastream in a file to analyse it with an alternative software or to replay it out without the need to rebuild the configuration etc 1 maintech GmbH 8 1 Basic Settings The basic settings in figure 7 include the most commonly used flags RDS groups and an error generator that generates intentional bit errors in the created RDS data stream e g for fuzzing If no further RDS groups are defined only 15B groups are created in the bitstream 8 1 1 Group 0 15B Flags PI Code and PTY The flags set several bits for music speech traffic program TP traffic announcement TA and the decoder information Changing a flag or other parameters immediately affects all channels transmitting this RDS source Setting e g the TA flag makes a compliant FM radio switch to the traffic announcement mode These flags are transmitted in groups OA OB and 15B The PTY program type defines the kind of content as a value between 0 and 31 PTY and TP are always transmitted in the second block of each RDS group You will find a table with the meanings of the different values for the PTY in the RDS standard The PI code program identification is sent in the first bl
28. le or playlist first frequency for sinus ramp second frequency for sinus ramp first volume for sinus ramp second volume for sinus ramp ramp duration file playlist name playlist name playlist file names 28 maintech GmbH Parameter rds used rds name rds ps rds pi rds tp rds ta rds ms rds pty rds dec rds rttag rds rta rds rtb rds rtc rds rtd rds pn1 rds pn2 rds tmcai rds tmcsi rds rtgrp rds rtbit rds rtitm rds rtxt rds ertg rds ertb rds pss rds afu rds rpa rds rpb rds rpc rds rpd rds rp1 rds rp2 rds zone rds mins rds days rds err rds ber rds fix rds page rds slow rds pin rds fused rds files rds eon rds eon ps rds eon af rds tmc used tmc name tmc ltn tmc sid tmc gam tmc rpt tmc Range 0 1 string string 0 Oxffff 0 1 0 1 0 1 0 31 0 3 list 2 string string string string string string 0 Oxffff link tmc 0 255 0 65535 0 255 0 255 0 255 0 65535 0 255 0 31 255 255 255 255 255 255 12 12 h 960 960 min days 0 255 0 100 0 255 0 255 0 65535 0 65535 0 1 oo0000 hex list 6 string list 876 16100 0 6000 dsec 0 1 string 1 63 0 63 0 255 2 10 list 4 Description rds source enabled disabled rds source name program service name program identifier traffic program bit traffic announce bit music speech bit program type decoder bits 3 dynPTY 2 compressed l artific
29. maintech Multi FM Modulator User s Manual for Generator Software v2 40 maintech GmbH Multi FM Modulator User s Manual for Generator Software v2 40 Contents 1 Package Contents 2 Starting up 3 Hardware Settings 3 1 Configuring the Modulator s IP Address 3 2 Connecting the Modulator via Network 3 3 Calibrating PLLs 4 Multi FM Software 5 Project Settings 5 1 Creating Saving and Reloading Projects 5 2 Switching Frequency Band Europe Japan 5 3 Stopping and Resuming Modulation 6 Configuring Channels 6 1 Frequency Attenuation Volume 6 2 Choosing Audio and RDS Sources 6 3 Status Icons Muting Channel Editor 7 Audio Sources 7 1 Constant Sinus 7 2 Sinus Sweep Ramp 7 3 Audio Files and Playlists 8 RDS sources 8 1 Basic Settings 8 1 1 Group 0 15B Flags Pl Code and PTY 8 1 2 Group 0 PS AF TA Programme Service 8 1 3 Group 1 ECC and PIN 8 1 4 Group 4 Date and UTC Time 8 1 5 Group 8 TMC Traffic Message Channel 8 1 6 Group 3 ODA Open Data Applications 8 1 7 Group 14 EON Enhanced Other Networks ant A NNNO O O oe 14 14 14 8 1 8 8 2 8 2 1 8 2 2 8 3 8 3 1 8 3 2 8 3 3 8 4 8 5 8 5 1 8 5 2 9 1 9 2 10 10 1 10 2 10 3 10 4 11 11 1 11 2 11 3 11 4 11 5 11 6 12 Error Generator 4 Alternative Frequencies AF Channel Automatic Method A B Radio Text au anne S
30. ng von Abl ufen o verwendet maintech GmbH Telefon 0931 40 70 6 90 Otto Hahn Stra e 15 Fax 0931 40 70 6 53 D 97204 H chberg http www maintech de Deutschland mailto docu maintech de maintech GmbH 1 Package Contents Included in the delivery of the Multi FM Modulator are e 1x Multi FM Modulator hardware incl power supply e 1x Multi FM generator software download from http www maintech de multifm e 1x RJ45 network cable e 1x USB RS232 service cable 2 Starting up For the initial start up of the modulator please proceed as follows oar WN Install generator software on a computer http www maintech de multifm Connect control computer and modulator using the network cable and switch them on Start generator software on the control computer icon on desktop Choose IP address of the modulator via RS232 see chapter 3 1 and connect Ctrl O Enter licence key if existing Ctrl K Modulator and generator software communicate via Ethernet UDP Therefore both devices must be assigned with IP addresses of the same segment see chapter 3 1 Starting up has to be done only once if you restart the software and switch the modulator on the connection is reestablished automatically 3 Hardware Settings 3 1 Dot WN m Configuring the Modulator s IP Address Start the generator software Connect service cable to computer and modulator Choose Menu Modulator Config Choos
31. ock two bytes of each RDS group When switching the TA bit a burst of 15B groups can be sent The number of the groups and their duration can be set for TA 1 and TA 0 If the number is set to 0 no burst will be sent If the duration is 0 or too low to transmit the number of burst groups in time no other groups will be sent between the burst groups 15B groups are also transmitted as filling groups when the set sending rates of all other groups would produce gaps in the RDS data stream or when no other groups are configured 8 1 2 Group 0 PS AF TA Programme Service In group 0 program service name PS and alternative frequencies AF are configured 0A 0B and the flags music speech and TA are transmitted The code for PS is defined in table E 1 of annex E in the standard Characters can be created directly by xx from a Hex value xx Hello 21 creates a Hello 0x21 is the hex value for the exclamation mark All in all four 0 groups are necessary to transmit the PS name 8 characters completely At least two 0 groups per second should be sent which means that the sending rate should be less or equal to 0 5 seconds According to the standard scrolling PS is not allowed and RadioText should be used instead Nevertheless the RDS generator features this function for testing purposes To create a scrolling PS the PS has to be longer than 8 characters Additionally you have to set how often a PS segment 8 characters is repea
32. project with Project Load Ctrl L e The last n projects for n 1 9 can be reopened with Ctrl Shift n 5 2 Switching Frequency Band Europe Japan The chosen frequency band can be changed by a click on the flag top right in the window or by pressing Ctrl B Eee Europe 87 50 to 108 00 MHz KJ Japan 76 00 to 90 00 MHz 5 3 Stopping and Resuming Modulation y Clicking the DD button disables the RF output of the Multi FM hardware Clicking again reenables the modulator maintech GmbH 6 Configuring Channels You can configure up to 24 single carriers depending on your licence in the channel overview Pressing key 1 0 switches the modulation of channel 1 10 on or out pressing key Ctrl 1 0 of channel 11 20 See figure 3 for an example of the channel status The following information are displayed e Channel 4 is active transmitting e Transmitting frequency is 96 00 MHz e Attenuation is 5 dB e Audio volume is 50 e Audio source is Audio 1 e RDS TMC source is RDS 1 96 00 MHz RDS 1 amp A 5 dB 50 Audio 1 T Figure 3 Channel status 6 1 Frequency Attenuation Volume Clicking on the frequency opens the slider which sets the transmitting frequency of the channel See figure 4 for an example 87 5 94 00 MHz 108 Figure 4 Frequency setting The frequency is changed by moving the red circle or by the keys Home End PageUp PageDown or by the arrow keys With the le
33. requency deviation can be chosen arbitrarily between 0 and 130 kHz The channel editor allows to copy the settings to all other channels or a selected range of channels amp Channel Settings Preemphasis none 2 SOus D 75ys 50 kHz 75 kHz Deviation C 75 kHz Samplerate 32kHz 44 1 kHz 48 kHz Channel Mode Mono Stereo kHz Auto Attenuation 0 0 de v Copy settings to these channels all from 2 ko Cancel Figure 5 Status icons and channel editor The green dots that are displayed in a 3x3 grid for each channel correspond to the settings in the channel editor The dots and the stereo symbol can be clicked directly switching the related setting This way settings can be changed faster than by opening the channel editor When the mouse rests a moment on an option the current value is displayed in a tooltip window Additionally the channel overview displays three bargraphs representing the following values e On the left the audio PCM fifo fill level is displayed from red to green for empty to full e In the middle the RDS TMC fifo fill level is displayed colors similar to audio e On the right the multiplex power is displayd in dB from blue to white The multiplex power depends on the audio source volume Ideally the volume should be chosen so that the value is about 0 dB 7 Audio Sources For audio sources the following signals can be g
34. roup 0 and Channel Automatic see paragraph 8 2 1 Activate Group 0 in Basic Settings Choose the Channel tab Set the RDS sources for the channels 1 3 to RDS 1 Check the currently set receiver frequency or the music track ON DO FWY FE Attenuate the signal of this frequency gradually with the attenuation slider At a certain signal level the receiver should switch to one of the stronger channels You can observe this change in the played music or in the frequency displayed by the receiver Attenuate and amplify the signal level of all three channels and observe the receiver performance At which attenuation n dB does it change the channel Is there a hysteresis in dB 11 4 Enhanced RadioText with RadioText In this example a RadioText is configured and sent with additional RT tags Create a new project with one channel and one RDS source Activate in RDS Sources part RadioText Send RadioText Enter You re hearing 0 by 1 in the first line Activate Send RadioText Tags Add two lines with the tags Item Title and Item Artist Enter a track for Item Title Enter an artist for ltem Artist NOOR WBN Ee Now you should see the following RadioText in the receiver You re hearing a track by an artist If you play out tracks with ID3 tags the RadioText will change e g You re hearing Pass This On by The Knife
35. sources On the left one can add new sources or delete them on the right a currently chosen source is edited Traffic announcements are sent in group 8 of the RDS data stream Accordingly the corresponding TMC source has to be chosen in the RDS source Apart from group 8 group 3 should be also active otherwise the TMC detection in the receiver is not ensured It is advisable to set the relevant country code for the RDS source if not many TMC receivers will discard the announcements For Germany for example Pl codes should with D and the enhanced country identification in group 1 is OxE0 Some receivers also need the clock included in the RDS stream to decode TMC if it is not provided by other means like GPS If needed it can be enabled in group 4 TMC announcements are coded according to the Alert C Standard ISO 14819 For a detailed explanation of the following parameters please refer to this standard 9 1 System Information The TMC system information SI consists of Location Table Number LTN Service Identifier SID Gap Parameter Alternate Frequency Indicator AFI and Message Geographical Scope MGS Bits This SI is sent alternating with the TMC Application ID AID usually 0xCD46 in RDS group 3A The repeat field configures how often each traffic announcement is repeated in direct succession The announcements are transmitted consecutively in RDS group 8A 10 maintech GmbH 9 2 Traffic Announc
36. tandard RadioText Group 2 Enhanced RadioText Unicode RadioText Plus RT Replaying RDS log files Packet Statistics General Save RDS Log File TMC Sources System Information 2 222 222 Traffic Announcements Remote Control List Management Channel Info RDS Log Modulator Status RDS Remote Control Application Examples Sending two Sinusoidal Tones on 100 MHz Sending Three Different Audio Files on Three Channels Automatic Change of channel via AF Enhanced RadioText with RadioText Sending Hex Signs with RadioText Generating two TMC Congestion An nouncements Parameter List 25 26 26 27 27 28 maintech GmbH 2012 09 26 12 39 Die Angaben und Informationen in diesem Handbuch wurden mit gr ter Sorgfalt und nach bestem Wissen und Gewissen zusammengestellt trotzdem sind vermutlich noch einige Fehler darin zu finden Die maintech GmbH bernimmt keine Haftung f r Sch den die aus eventuellen Fehlern in diesem Handbuch oder der Software entstehen k nnen Wir freuen uns ber Ihre R ckmeldung Wenn Sie einen Fehler gefunden haben oder der Meinung sind dass etwas in gr erer Ausf hrlichkeit erkl rt werden sollte dann z gern Sie nicht uns darauf hinzuweisen Dieses Handbuch ist urheberrechtlich gesch tzt Alle Handelszeichen Marken etc geh ren ihren entsprechenden Besitzern und werden hier nur zur Beschreibu
37. ted and by how many characters the text is advanced afterwards When the PS is sent completely it starts from the beginning again 8 1 3 Group 1 ECC and PIN In Group 1 the extended country code ECC can be transmitted First set Code O and then set Data to the ECC The first character of the Pl code is the country code CC The settings for Germany are ECC 0xE0 and CC Dorl The program item number PIN contains the scheduled transmission start 5 bit day of the month 1 31 5 bit hour 0 23 and 6 bit minute 0 59 of the currently sent program segment Month 0 e g PIN 0 tells the decoder that the PIN is not set maintech GmbH 8 1 4 Group 4 Date and UTC Time In this group date and time can be sent Time is sent once every full minute and the receiver receives the message at second 0 Reference time is the current time of the computer running the software When noticing discrepancies you should check the Windows system time 8 1 5 Group 8 TMC Traffic Message Channel In Group 8 TMC messages are sent if a TMC source has been chosen Apart from that you can configure the applications identification AID that is transmitted in group 3 With fill you can use free groups for TMC if the maximum sending rate for RDS is not used up by the other groups With fill active the sending rate go below the configured setting for TMC Otherwise the free groups are filled up with 15B groups quick info
38. the parameter field of the source by drag amp drop Press the left mouse key on the name of the playlist und drag the mouse arrow with pressed key onto the audio source until you see a symbol If you want only a single file on the playlist to be played in a loop you can pull the file name directly onto the audio source 6 You can copy selected files by drag amp drop to other playlists 7 Finally you should ensure that the newly created audio source is assigned to an RF channel The audio source must be chosen for at least one channel of the channel overview see paragraph 6 2 11 maintech GmbH 8 RDS sources The RDS generator implements the RDS standard according to DIN EN 62106 Understanding the configurable parameters requires an understanding of the standard and a detailed explanation of the values and of their function would go beyond the scope of the manual Therefore it is assumed that the user of the Multi FM Modulator is well acquainted with the RDS standard Project Modulator Help O Channels 5 Audio RDS sources Basic settings Alternative Frequencies _RadioText Packet Statistics DS Gruppe 15B Bits F Group 1 Extended country code amp PIN RDS 1 FES Music PI Code V dynamic PTY V stereo compressed TP Pager o Code g Rate wes D Speech D316 E artificial head V TA PIN 0 Data E0 10 05 ji F Group 14 EON enhanced other networks
39. uency Regional Frequency F1 byte F2 byte 1 CAFE yes 87 7 MHz yes 90 9 MHz 1 7AFsfolgen 88 5 MHz 2 CAFE no 88 5 MHz 2 88 5 MHz 87 7 MHz 3 CAFE no 89 7 MHz 3 88 5 MHz 89 7 MHz 4 90 9 MHz 88 5 MHz F1 gt F2 regional Frequency xX Modulator v21 24 channels Remote control Figure 8 Alternative frequencies in RDS 8 2 1 Channel Automatic The channel automatic mode finds the frequencies of all channels using the same RDS source This means that all frequencies that belong to a certain transmitting station same PI PS are used All these channels are transmitting the frequencies of the other channels automatically in the AFs in group 0 Additionally one can add frequencies manually even if they are not transmitted by the FM modulator e g to include the frequencies of transceivers with a different PI 8 2 2 Method A B The standard defines two methods for the encoding of the AF Procedure A transmits a list with up to 25 AFs Procedure B can be used for bigger lists or when it is necessary to mark regional stations similar programs with different Pl 15 maintech GmbH Double clicking the Regional field changes between yes and no Regional programs can only be sent with procedure B 8 3 RadioText Project Modulator Help Dome O com Ane Te RDSsources Basic settings Alternative Frequencies RadioText Log Files Packet Statistics
40. us RT Using RT one can mark certain areas in RadioText and use them as data fields position length A possible application is e g signalling the position of the componist s name or the song title in the text With each line a tag is defined and numbered consecutively with n The RadioText You hear 0 from 1 includes the references 0 and 1 In the first line 0 the tag Item Title in the second line 1 the tag Item Artist is chosen If a Vorbis file with ID3 tags is played as the audio source of the channel the RT tags from the ID3 tags are transferred automatically Otherwise the text deposited in the table is used for the tags 8 4 Replaying RDS log files Instead of generating a new RDS signal it is possible to play a recorded RDS log from a file The requested files have to be added in the Log files tab All lines from all files are sent continually After the last line of the last file the playout starts with the beginning of the first file again Paragraph 8 5 2 describes how to save an RDS log file To create faulty CRCs too there is a special format ABCD D314 1592 6535 8979 If there is a O in the place of A B C or D the correct CRC for the relevant block is computed and inverted In Raw format the CRC values can be set directly 13 bytes of these 4 x 10 bits CRC 17 maintech GmbHHEB 8 5 Packet Statistics 8 5 1 General Project Modulator Help Channels
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