Terrestrial Digital PAL

Transcription

1 Montageanleitung anleitung Assembly Instruction tion English Deutsch GSS Grundig SAT Systems GmbH Beuthener Straße 43 D Nuernberg Terrestrial Digital PAL PTDP 3200 PTDP 4200 PTDP 5200 KLASSE ACLASS Phone: +49 (0) 911 / Fax: +49 (0) 911 / info@gss.tv Internet:

2 Contents 1 Safety regulations General information Packing contents Technical data Description Assembly Installing the Cassette Connecting the Cassette The operator control panel at a glance Menu items Navigating in the menu The menu at a glance Programming Preparation Programming the Cassette...52 Selecting the Cassette...52 Selecting the channel strip / Querying the software version...53 Modulator settings...54 Setting the modulation depth (residual carrier)...54 Setting the picture/sound carrier ratio...55 Setting the output channel...55 Setting the frequency offset...56 Settings for TV stations...56 Automatic picture format conversion...56 Adjusting the picture format...57 Setting regional switching...57 Switching teletext mode off/on...58 Activating and entering teletext subtitle pages...58 Setting the teletext standard...59 Setting audio output...59 Setting the audio mode...60 Setting the input channel...60 Hierarchical modulation...61 Configuring the CA module, displaying card information...62 Automatic station search...62 Selecting the TV station sound...64 Setting the volume level...64 Time zone and summer time (offset)...65 Saving settings...65 Decoding 2 stations with one CA module...66 Setting time-controlled, alternate channels Channel and frequency table Technical terms in the digital transmission technology / satellite technology fields

3 1 Safety regulations Note Assembly, installation and servicing must be carried out by an authorised electrician. Switch off operating voltage before the start of assembly or service work or pull out the mains plug. Install the system - in a dust-free, dry environment - so that it is protected from moisture, vapours, splashing water and damp - somewhere protected from direct sunlight - away from the immediate vicinity of heat sources - at an ambient temperature of < 50 C. Make sure the device is adequately ventilated. Do not cover the ventilation slots. Beware of short circuits! No liability is accepted for damage caused by faulty connection or inexpert handling. Observe the relevant norms, regulations and guidelines on the installation and operation of antenna systems. Earth the SAT receiver using the equipotential bonding rail in accordance with DIN EN und VDE Do not perform installation and service work during thunderstorms. Take action to prevent static discharge when working on the device. 2 General information 2.1 Packing contents 1 Cassette PTDP 3200 or PTDP 4200 or PTDP HF connection cables 1 Assembly instruction 1 measuring log ENGLISH

4 2.2 Technical data The devices meet the following EU directives: 73/23/EEC, 89/336/EEC The product fulfils the guidelines and standards for CE labelling. KLASSE ACLASS HF input Frequency range: MHz, MHz Frequency raster: CCIR Level range: dbµv (16 QAM 2/3, GI=1/4, 8k) HF output PTDP 3200 Channels: Frequency range: Channel raster: PTDP 4200 Channels: Frequency range: Channel raster: PTDP 5200 Channels: Frequency range: Channel raster: Output level: Output impedance: Fine tuning of the output signal: Connections HF input: HF output: Connection strip (10-pin): RS232 socket: S3...S24 including C5...C MHz MHz PAL CCIR Standard B/G S21...S MHz MHz PAL CCIR Standard B/G C21...C MHz MHz PAL CCIR Standard G Typ. 90 dbµv 75 Ω nominal ±4.00 MHz in 125 khz increments 2 IEC sockets 1 IEC socket, female for supply voltages and control circuits serial interface (Sub-D, 9-pin) for software updates using a PC or notebook. Control panel software: min. software version V

5 2.3 Description The twin transmodulator Cassettes are COFDM-converters, which convert all free stations modulated according to DVB-T 1) -Standard and COFDM 2) into two PAL-modulated cable signals. Each twin Cassette has two digital terrestrial inputs and an HF output. Each Cassette is equipped with two channel strips (A and B). Each channel strip consists of a digital terrestrial tuner, a digital signal preparation unit and an output converter. The channel strip A can decode encoded channels via a corresponding CA module. Depending on the hardware and CA module, two channels can be decoded simultaneously with a CA module, with the second one supplied via channel strip B. The control of the Cassettes takes place via the head end. By means of the a and b levels of the channel strips, channel selection according to a timer is possible. A Cassette s channel strips are indicated by Bx / Box A or B in the control unit display. The prepared input signals reach the HF output collector of the head end via the HF output socket. The common output level of the channel strips A and B of these Cassettes can be set with the level regulator (max. 20 db) at the output collector of the head end. After the head end has been switched on, the software version of the control unit is displayed briefly in the two-line LC display. Approximately five minutes after the last button has been pressed, the display switches off automatically. The Cassettes are designed for use in the following head ends: PSU 8 PGT 8 PSU Display of the software versions To call up the display of the control unit s software version: Hold down two control buttons (e.g. ) simultaneously until (t = approx. 5s) the display darkens and the software version, e.g. V.30, is shown. To call up the display of the Cassette s software version: Press the buttons to select the Cassette. Press and then. ENGLISH 1) DVB-T = Digital Video Broadcasting - Terrestrial 2) COFDM = Coded Orthogonal Frequency Division Multiplexing

6 C101 L104 L100 L101 L103 C100 BREITBA +24 ROT GRUEN +18V Anschl. 3 Assembly 3.1 Installing the Cassette Note Pull the mains plug out of the head end out of the mains socket before inserting or replacing Cassettes. If necessary, loosen or remove the input distributor. Unscrew the fastening screws from the bracket in the head end. Insert the Cassette into a free slot and push it into the housing. Align the Cassette and gently make it contact with the connections of the circuit board and the HF bus bar. Fasten the Cassette with the 1 screws. LNC- +18V CASSETTE CASSETTE CASSETTE CASSETTE CASSETTE CASSETTE CASSETTE CASSETTE CASSETTE CASSETTE CASSETTE CASSETTE INPUT OUTPUT OUTPUT INPUT

7 3.2 Connecting the Cassette Plug the HF input cables into the HF input sockets INPUT A 3 (channel strip A) and INPUT B 1 (channel strip B). Connect the head end to the mains power supply. > The Cassette is now ready for operation. It is connected to all required supply voltages and data cables! Notes: Loop-through OUTPUT A 4/ B 2 The signal fed into the corresponding inputs is located at these connections. Socket RS232 5 The operating software of the Cassette can be updated via the socket RS232 (9-Pin-Sub-D) by means of a PC or notebook. Use the BE-Flash software as the update software. You can find the current operating software of the Cassettes on the website Slot for CA module 6 When you want to decode encoded stations, insert the corresponding CA module. Eject button for CA module 7 Press the button to eject the CA module. ENGLISH

8 4 The operator control panel at a glance 4.1 Menu items Program the Cassette using the buttons on the control unit of the head end. The two-line display of the control unit then shows the menus. You can select the following main menu items with the Cassette and channel strip Modulator settings Modulation depth Picture/sound spacing Output channel Settings for TV stations Input channel TV stations Configure the CA module Automatic station search TV station sound Volume Time zone and summer time More detailed information on using the menu can be found in the settings described below. 4.2 Navigating in the menu scrolls forward through the menu / select parameters in the menus set values, initiate actions selects sub-menus M saves all entries button: BE Remote V. 19 PROFESSIONAL The parameters to be set are displayed underlined (cursor). The following examples show how to program the Cassette PTDP 4200; the output channels can be set from S 21 to S

9 4.3 The menu at a glance Ein / On BE Remote V. 30 PROFESSIONAL t 10 s Bx 1A TWIN-SAT C5-12,S3-24 C07 + Box 4 COFDM-PAL S21-S41 + Bx 1A TWIN-SAT Böx 4 TWIN-SAT Box 5 TWIN-SAT C5-12,S3-24 C07 C5-12,S3-24 C07 C5-12,S3-24 C07 Page 49 A / B Sat.1 COFDM-PAL S25 VERSION: DVBT-PAL A V.07 (A / B) + Bx 4B COFDM-PAL S21-S41 + Page 50 * ) Page 51 Page 50 Modulator: OUTPUT: on on / off HF-Level: OUTPUT: db OUTPUT: Depth: normal normal 10% Pic/Snd OUTPUT: normal 1 normal +2 db ENGLISH Page 48 *) Activation of 2 stations with one CA module

10 Page 47 t > 2 s OUTPUT: S25 OUTPUT: S25 Fine Letter VIDEO-OUT: Letter / 16:9 WSS: Signaling: on on / off PIDs: SERVICE: dynamic dynamic / fixed Teletext: OUTPUT: on on / off SUBTITLE: TXT-Page: 150 off / n SUBTITLE: TXT-Norm: West West / East AUDIO-OUT: Dual normal normal / swap Page 49 AUDIO-OUT: MPEG = > Audiomode MPEG / VPS

11 Page 48 t > 2 s INPUT: C05 C69 C40 (626,00) INPUT: C BER.: 0.0e - 8 Module Hauptmenü Priority: Hierarch.: high high / low MENÜ 1/5: Information M TV > Information Smartkarte Jugendschutz Einstellungen Zurück Bitte wählen Sie mit OK AlphaCrypt Light 1.01 (c) Mascom GmbH / Page 51 VIDEO 02/04+ *TV: PROVIDER: Das Erste ARD 01/04 AUDIO-IN: deu Volume: AUDIO-OUT: +2dB OFFSET: 01:15:25? +01 S S / - ENGLISH M Page

12 Time-controlled switching Page 47 Bx 4a COFDM-PAL + Info/Sat.1 Bx 4b COFDM-PAL Info/Sat.1 S25 Bx 4a On Time TIMER on / off Bx 4a On Time TIMER: 21:00 / Bx 4a Off Time TIMER: / Bx 4a Days TIMER: MTWTFSS / Bx 4a INPUT: C 34 (578,0) ok Bx 4a Priority Hierarch: high high / low Bx 4a 01/03+ ZDF TV Bx 4a 01 / 02 AUDIO IN: deu Bx 4a AUDIO OUT: Volume: 0 db db M Page

13 Decoding 2 stations with one CA module Page 47 on / off Bx 4B Modulator: OUTPUT: on Bx 4B S23 OUTPUT: Bx 4B INPUT: C06 (184,5) ok Bx 4B HIERARCH: Bx 4B HIERARCH: high / low Priority high on / off CI at LINE A Page 49 ENGLISH

14 5 Programming 5.1 Preparation Connect the test receiver to the HF output OUTPUT of the head end. Set the output channel (e.g. S21) of the Cassette (see page 55) and adjust the TV test receiver to this channel. Switch on the modulator if necessary. Balance the output levels of the channel strips A and B if the difference in level is 1 db (see chapter Modulator settings, page 54). Measure the output level of the analogue Cassettes and, if necessary, tune them to a uniform output level. 5.2 Programming the Cassette Switch on the head end > The processor reads the Cassettes data (approx. 10 seconds) > The display shows the software version (e.g. V.30) Ein / On BE Remote V. 30 PROFESSIONAL t 10 s Selecting the Cassette Select the Cassette you want to program (box no.) by repeatedly pressing the button. Bx 1A TWIN-SAT C5-12,S3-24 C07 + Box 4 COFDM-PAL S21-S41 + Bx 1A TWIN-SAT Böx 4 TWIN-SAT Box 5 TWIN-SAT C5-12,S3-24 C07 C5-12,S3-24 C07 C5-12,S3-24 C07 By pressing, activate channel strip A

15 Selecting the channel strip / Querying the software version > The display shows e.g. the menu COFDM-PAL. Bx stands for Cassette (box) 4 for Cassette 4 A for channel strip A A / B Sat.1 COFDM-PAL S25 VERSION: DVBT-PAL A V.07 (A / B) + Bx 4B COFDM-PAL S21-S41 Software version of the Cassette: press the Return to main menu: press the + button. * ) button again. By pressing, select channel strip A / B or a / b Notes: > A in the menu VERSION means that 2 programs can be simultaneously decoded with this hardware. Setting time-controlled, alternative channels > By pressing, call up channel strip B. > Press again: Call up timer a / b for time-controlled switching on and off of channels B (page 68). > OUTPUT: Modulator appears in the display. ENGLISH

16 Modulator settings OUTPUT: Modulator: on on / off HF-Level: OUTPUT: db Switching the modulator on/off. By pressing, switch the output channel off off and on on. > The menu OUTPUT: HF-Level appears in the display. > Check the output level of the channel strips A and B! Compare/Adjust the output levels of the channel strips: Select the channel strips A and B and by pressing adjust the higher output level of one channel strip to the lower output level of the other channel strip incrementally from 0 to 7 db. > The menu OUTPUT: and e.g. Depth: normal appears in the display. Setting the modulation depth (residual carrier) If the sound drones due to the picture content, lower the modulation depth. Depth: OUTPUT: normal normal 10% Press to set the modulation depth ( normal or -5 % or -10 % )

17 > The menu OUTPUT: and e.g. Pic/Snd: normal appears in the display. Setting the picture/sound carrier ratio In the event of moiré interference, the second audio frequency (5.74 MHz) can be lowered. Pic/Snd OUTPUT: normal 1 normal +2 db Press to set the attenuation of the audio frequency. ( 1 db, normal, +1 db, +2 db). > The menu OUTPUT: and e.g. S25 appears in the display. Setting the output channel t > 2 s S25 OUTPUT: S25 OUTPUT: Fine By pressing, set the desired output channel. > The channel range that can be set depends on the type of Cassette used. ENGLISH

18 Setting the frequency offset Warning: Only change the frequency offset in exceptional circumstances and where there is a well-founded reason for doing so, since once you change it, all connected televisions of the cable system must be adjusted to match it by means of corresponding fine-tuning corrections. Press and hold down the button until 0 also appears in the display. Set the offset with the buttons. Press to return to the main menu. Press : the Input menu is activated. > Continue with Setting input channel (see page 60) > The menu VIDEO OUT: Letter appears in the display. Settings for TV stations The following settings Picture format conversion, Teletext mode and Teletext subtitle page are only relevant for TV stations. Automatic picture format conversion TV programmes are transmitted in accordance with DVB Standard in picture format 4:3 or 16:9. The Cassette recognises these picture formats and prepares them automatically for all of the connected TVs (letterbox). The 16:9 setting should only be selected if all of the TVs connected to the head end are 16:9 capable. The factory setting Letter should be retained in normal circumstances, as 4:3 TVs are also supported in this case. The settings are only effective with TV programmes with the picture format 16:9. Letter : black bars at the top and bottom edge of the screen 16:9 : In the case of TVs with the picture format 4:3, the picture content is vertically stretched (e.g. faces appear longer)

19 Letter VIDEO-OUT: Letter / 16:9 Press the buttons to select the desired picture format Letter or 16:9. > The menu WSS: and Signaling on appears in the display. Adjusting the picture format If problems with connected devices arise, the WSS in the VPS line can be deactivated in this menu. Signaling: WSS: on on / off Press to switch WSS on/off. > The menu SERVICE: PIDs appears in the display. Setting regional switching In this menu the dynamic switching for regional stations (providers) can be deactivated. PIDs: SERVICE: dynamic dynamic / fixed ENGLISH Press to activate ( dynamic ) or deactivate ( fixed ) regional switching

20 > The menu OUTPUT: Teletext appears in the display. Switching teletext mode off/on Teletext: OUTPUT: on on / off Press to switch teletext mode on or off ( on/off ). > The menu SUBTITLE: TXT-Page appears in the display. Activating and entering teletext subtitle pages This menu allows subtitles transmitted in teletext to be displayed directly in the station. SUBTITLE: TXT-Page: 150 off / n Press to switch on ( 150 ) or off ( off ) the displaying of teletext subtitles. If necessary, press / to select the 100th, 10th and 1st digit positions of the subtitle page and enter the numbers with the buttons. > The menu SUBTITLE: TXT-Norm appears in the display

21 Setting the teletext standard SUBTITLE: TXT-Norm: West West / East Press to set teletext standard West or East. > To display the characters for Western European languages, set West ; for Eastern European languages, set East. > The menu AUDIO-OUT: and e.g. Dual normal appears in the display. Setting audio output AUDIO-OUT: Dual normal normal / swap For TV programmes with dual tone, swap languages: Press to swap languages ( Dual swap ). > The menu AUDIO-OUT: and e.g. MPEG = > Audiomode appears in the display. ENGLISH

22 Setting the audio mode Select whether the Mono / Stereo / Dual Tone from the MPEG data stream or the VPS should be used. AUDIO-OUT: MPEG = > Audiomode MPEG / VPS Press to switch mode ( MPEG / VPS ). > The following menu appears in the display: INPUT: and e.g. C40 (626.00). Setting the input channel t > 2 s INPUT: C05 C69 C40 (626,00) INPUT: C Press to enter the desired input channel. Press / (t > 2s) to switch fine-tuning on. Press to set the required value. Press to return to the main menu. Note: If a question mark? appears in the second line of the display, there is no input signal present. Check the configuration of the antenna system and head end as well as the preceding settings of the Cassette in question. > The reception quality menu BER. C/N 0.0e appears in the display

23 Reception quality The reception quality (BER= Bit Error Rate) of the station is displayed. 0.0e - 8 BER.: > Return to main menu. > The menu Hierarch.: Priority appears in the display. Hierarchical modulation Priority: Hierarch.: high high / low Press to set to high or low priority (this does not apply in the case of standard modulation - see chapter 7). Configure the CA module: press the button. > The menu MENU 1/5 and e. g. Information appears in the display. ENGLISH

24 Configuring the CA module, displaying card information This setting supports a menu, which is displayed on the television screen. This menu is dependent on the CA module used. Module Hauptmenü Priority: Hierarch.: high high / low MENÜ 1/5: Information M TV > Information Smartkarte Jugendschutz Einstellungen Zurück Bitte wählen Sie mit OK AlphaCrypt Light 1.01 (c) Mascom GmbH / Press to select the menu item. Press / to activate the menu item. Select the required functions with the Save the settings with the M button. buttons. > The automatic station search (PSI, Program Search Index) is started. > The menu 02/4+ TV : appears in the display. Automatic station search VIDEO 02/04+ *TV: PROVIDER: Das Erste ARD Notes: As soon as the automatic station search has found all of the TV or radio stations, the corresponding data appears in the display of the head end

25 Key: 02/04 TV or Rad: the 2nd of a total of 4 TV and radio channels is being shown or has been set. + TV: (+) means that the sound of the TV programme currently being shown is being broadcast in several languages. *TV or Rad: The star (*) means that these TV and radio stations are encoded. > To enable the stations, the CA module and the appropriate smart card of the station provider are required. > For radio stations, the background of the screen of the connected TV or test receiver is darkened. A menu appears on the screen informing you about the radio station currently selected, the name of the broadcaster, the current time, the title of the current programme along with what time it started and finishes, as well as the title of the following programme. > If a service number (e.g. 131 ) appears instead of TV or Rad, this indicates that an unnamed station or an undefined data stream is being received. To select the TV and radio stations of this broadcaster, use the buttons. By pressing, you can call up various station information about the current TV or radio station. By pressing VIDEO, switch between the menu INPUT e.g. C40 (626.00) (input channel) and the menu 02/04 TV or Radio (automatic station search). > The AUDIO-IN : menu and e.g. 01/04 deu appears in the display. ENGLISH

26 Selecting the TV station sound Four sound options in different languages, for example, are broadcast for this TV station (01/04). 01/04 AUDIO-IN: deu Press to select the desired sound option. > The menu AUDIO OUT and e.g. Volume: 2 db appears in the display. Setting the volume level You can balance diverging volumes of TV and radio stations in this menu. AUDIO-OUT: Volume: +2dB Press to set the volume level (from +6 db to 24 db) as you find best. > The menu OFFSET 13:48:22? +01 S appears in the display

27 Time zone and summer time (offset) This setting is necessary for Radio display and time-controlled channel switching. The internal clock of the Cassettes synchronises automatically to Greenwich Mean Time, longitude 0 (GMT). So that the programmes can be correctly displayed, the time zone (offset) that your location is in in relation to GMT should be entered. 01:15:25? OFFSET: +01 S S / - M 01:15:25? Time (GMT) > the current time is displayed when the question mark? disappears. +01 S +1 hour (offset to GMT) and summer time support ( S ) are switched on. Example: Summertime support for the time zone Germany is in: If S is switched on, one hour is added in addition to offset (+01) during summer time. At the end of summer time the hour is automatically substracted. Press to set the time zone you live in (offset from 12 hours to +12 hours). Press on S. to switch summer time support off or Saving settings Press the M button. > Back to select the Cassettes A (page 52). > The new settings are saved permanently. Note: Going back to select Cassettes A via settings that have not been saved. cancels all ENGLISH

28 Decoding 2 stations with one CA module This feature is only possible via channel strip B. The settings not described below are the settings pertaining to channel strip A. on / off Bx 4B OUTPUT: Modulator: on Select channel strip B > This can be seen via connection C in the flow chart. Switching the modulator on/off: By pressing, switch the output channel off off and on on. > OUTPUT: and e.g. S23 appears in the display. Setting the output channel Bx 4B S23 OUTPUT: By pressing, set the desired output channel. > The menu INPUT and e.g. C06 (184.5): appears in the display

29 Setting the input channel Bx 4B INPUT: C06 (184,5) ok > The input channel of channel strip A is used. > The menu HIERARCH Priority: appears in the display. Switching on decoding You switch decoding on or off in this menu. high / low Bx 4B Priority HIERARCH: high on / off Bx 4B HIERARCH: CI at LINE A To activate decoding: press the button. > The menu HIERARCH: CI at LINE A appears in the display to indicate that the common interface of channel strip A is being used for decoding. Press. > Return to main menu via connection I (page 62). ENGLISH

30 Setting time-controlled, alternate channels Stations can be switched on and off by means of a timer in this menu. Here, for the set switch-on time ( On Time ), a switch over occurs from box A to box a ; for the switchoff time ( Off Time ), from a to A. Bx 4a COFDM-PAL + Info/Sat.1 Bx 4b COFDM-PAL Info/Sat.1 S25 Press. > TIMER On Time appears in the display. Bx 4a On Time TIMER on / off Press to switch the timer on (or off, as required). > On Time 21:00, for example, appears in the display. Setting the switch-on time Bx 4a On Time TIMER: 21:00 / Press cursor with to set the desired switch-on time. Move the /. > TIMER Off Time, for example, appears in the display

31 Setting the switch-off time Bx 4a Off Time TIMER: / Press to set the switch-off time. Move the cursor with /. > TIMER: Days MTWTFSS appears in the display. Setting the days of the week Bx 4a Days TIMER: MTWTFSS / Press to switch on / off the days on which the timer should and should not be active (e.g. Bx 4a MTWTF ). Move the cursor with /. Key: M Monday T Tuesday W Wednesday T Thursday F Friday S Saturday S Sunday > INPUT: C34 (578.0), e.g., appears in the display. Bx 4a INPUT: C 34 (578,0) ok Setting the channel ENGLISH Press to set the desired channel

32 Press the button > Hierarch: Priority appears in the display. Setting hierarchical modulation Bx 4a Priority Hierarch: high high / low Press to set to high or low (this does not apply in the case of standard modulation - see chapter 7). > Bx 4a 01/03+ TV, e.g., appears in the display. Selecting stations Bx 4a 01/03+ ZDF TV Press to set the desired station (e.g. ZDF). > The display shows: AUDIO IN: 01 / 02. Setting the language Various stations broadcast programmes in additional languages alongside the basic language. Bx 4a 01 / 02 AUDIO IN: deu Press to set the desired language (e.g. deu ). > AUDIO OUT Volume appears in the display

33 Setting the volume Bx 4a AUDIO OUT: Volume: 0 db db M Press to set the desired volume. Press M. > The entered data is saved. > Return to main menu D (page 53). ENGLISH Alterations reserved. Technical data E. & O.E

34 6 Channel and frequency table 6.1 Band I/III Kanal Channel Kanalmittenfrequenz Channel centre frequency [MHz] Bildträgerfrequenz Picture carrier frequency [MHz] Kanal Channel Kanalmittenfrequenz Channel centre frequency [MHz] Bildträgerfrequenz Picture carrier frequency [MHz] C C C S S S S S S S S S C C C C C C C C S S S S S S S S S S

35 6.2 Hyperband Kanal Channel Kanalmittenfrequenz Channel centre frequency [MHz] Bildträgerfrequenz Picture carrier frequency [MHz] S S S S S S S S S S S S S S S S S S S S S ENGLISH

36 6.3 Band IV/V Kanal Channel Kanalmittenfrequenz Channel centre frequency [MHz] Bildträgerfrequenz Picture carrier frequency [MHz] Kanal Channel Kanalmittenfrequenz- Channel centre frequency [MHz] Bildträgerfrequenz Picture carrier frequency [MHz] C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C

37 7 Technical terms in the digital transmission technology / satellite technology fields CA (Conditional Access) An encrypted digital channel (conditional access) can only be viewed with the CA module for the encryption system in conjunction with the corresponding smart card. The smart card contains all of the necessary subscriber and channel data for the authorisation and enabling of the corresponding channel provider. The digital encryption systems most commonly in use in Europe are: Conax, CryptoWorks, Irdeto, Nagravision, Seca and Viaccess. CI (Common Interface) The common interface slot (CI) is the interface for DVB receivers, into which a CA module of the various encryption systems can be inserted. DVB (Digital Video Broadcast) With DVB, the limited resources of terrestrial transmitters and satellite transponders can be used in a considerably more efficient manner. It is possible to store 6 digital TV and radio channels on one channel/transponder without compromising quality. FEC (Forward Error Correction) FEC is a standardised error protection system for digital television transmissions. In this process, redundant data (only back-up data containing no picture or audio data) is transmitted along with the original picture and audio data. This is necessary since there is no saved data protocol between the transmitter and the satellite receiver. If transmission faults occur, the receiver can reconstruct the missing information using the redundant data. The FEC describes the relationship of original picture and audio data to redundant data. An FEC of 3/4 states that a data volume consisting of 3/4 original data and 1/4 redundant data is being transmitted. Hierarchical modulation In order to attain with less field strength a greater range for broadcasters, with DVB-T so-called hierarchical modulation is used. In this process, several data streams are modulated onto a DVB-T data stream using Quadrature Amplitude Modulation (QAM). The robust High Priority data stream (HP) with a lower data rate is modulated onto the more sensitive Low Priority data stream, which possesses a higher data rate. In good reception conditions, the receivers can receive both data streams; in poorer reception conditions, only the HP portion. Several receivers can be supplied simultaneously with various services via one channel. ENGLISH MCPC (Multi Channel Per Carrier) This is a common process for accomodating several picture and audio channels on one carrier per transponder

38 MPEG (Motion Picture Expert Group) This internationally recognised norm group has created the basis for digital television (DVB) and many other interactive digital services. Digital television as it stands works with MPEG-2, where HDTV is also defined (see also ISO norm - ISO ). PID (Program ID) To be able to filter out a single channel from the data stream of an MCPC carrier, identity codes are transmitted for every channel for picture and audio transmissions (i.e. video PID and audio PID). The receiver has saved the PIDs in its channel list for every station and can route the correct data to the television. The PIDs are determined anew during every automatic search. In order to view a certain station, it may be necessary (only in exceptional cases) with some receivers to enter the PIDs manually. QPSK (Quadrature Phase Shift Keying) Quadrature Phase Shift Keying With QPSK, the carrier oscillation can take in four discrete phase conditions, which are allocated the four possible combinations or two consecutive bits of the binary code signal. This makes it possible to transmit two bits with one phase condition. Correspondingly, carrier oscillation phase jumps of 90, 180, 270 and 360 (0 ) are possible. The amplitude and frequency of the carrier oscillation therefore remain constant. SCPC (Single Channel Per Carrier) In an SCPC process, only one digital picture or audio channel is on one carrier. A number of carriers can be stored on one transponder. SR (Symbol Rate) The symbol rate specifies at which speed data is to be sent. The receiver must synchronise to this speed. Symbol rates between and kilosymbols per second are common for MCPC channels; SCPC channels work with symbol rates between 2000 and 7000 kilosymbols per second. Smart card Access/Authorisation card of a channel provider with which the paying subscriber can view the encrypted satellite channels of this provider. The smart cards contain a chip, in which all necessary subscriber and channel data for the authorisation and enabling of encrypted satellite channels are saved. Cyclical information is sent for all subscribers via the transmitter. The CA module filters the relevant information for the subscriber noted on the card and checks their authorisation

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40 Änderungen vorbehalten. Technische Angaben ohne Gewähr Alterations reserved. Technical data E. & O.E. GSS GmbH