Technology of Q 2500 colour TV set
Technology of Q 2500 colour TV set Technology of Q 2500 colour TV set
Technology of Q 2500 colour TV set3.4 Components3.4.1 Satellite front end3.4.2 Functional distributionThe satellite front-end processes the signal ofthe 1. satellite IF coming from the Universal-LNC or Multiswitch up to the MPEG-2 carriercurrent, fed to the MPEG-2 demultiplexer/decoder.It also houses the componentsfor the supply and control of the antennaunits. The functions mentioned are distributedto blocks of the Sat 6 (Tuner, LNCsupply) unit DVB decoder (AD conversion,demodulation, forward error correction). Theseparation is implemented via an analogue/digitalsatellite tuner in order to be ableto use redundancy free processing of TV andDVB signals. The reasons for the choice ofinterfaces are:Fewer requirements for the screening of theSat 6 unit and low-interference quasianaloguebaseband interface to DVB decoder.Due to the functional unity, the relevant parametersfor DVB reception of the Sat 6 unitare specified in the following.3.4.3 TunerThe tuner converts the signal of the 1. satelliteIF in the base band. Signal processing foranalogue and DVB signals is distinguishedonly in respect of demodulation, and is thereforealmost identical with respect to the prefilteringand amplification stages, mixing onthe 2. IF, channel selection and amplification.For this the implementation of an analogue/digitalcombi-tuner is advised.The Sat 6 unit incorporates theBS2W7VG2002 (Sharp) analogue/digital satellitetunerDocument Q 2500 54 © Loewe ProCollege
Technology of Q 2500 colour TV setSat6: Main - analog/digital Twin: analogRF inIoutQoutIout DVBQout DVBLNB1/2SCLSDAAGC InTunB2B4B6B5AFT2AFT1CVBSTSA5523P6Port P0 ... P7W100 toDVB-BoardSCL4 SDA4 U5 U12Video-TPW680 toSignal-Board5.5 10FM InS1 R OutAF Rf/MHzSTV0056S1 L OutAF LSGS LNB2LM2574SAA1300digitalanalog10f/MHzBB InI/OSCLSDAU5U12S1 Vid OutS2 Vid RtrnS3 Vid RtrnS2 Vid OutFBASSDA SatSCL SatMax4546U16U26GNDW390 toBasic-BoardAGCSCL DVBSDA DVBDiSEqCGNDW120 toDVB-BoardGND5V12VSCL4SCD4N.C.30VW260 toBasic-BoardDiSEqCW760 toSignal-BoardUlncPhilipstunerCVBSAS SCL SDA Ud U5TDA6151-5xAmplitude+/-/BBMuteFBASSIFW770 fromBasic-BoardSGS LNB2LM2574SAA1300P4P5P7P0P1(TSA5523)P3: Clamping on/offP2: MuteCVBSSIFU26DiSEqCSCL4SDA430V 5VDocument Q 2500 55 © Loewe ProCollege
- Page 3 and 4: Technology of Q 2500 colour TV set1
- Page 5 and 6: Technology of Q 2500 colour TV set1
- Page 7 and 8: Technology of Q 2500 colour TV set1
- Page 9 and 10: Technology of Q 2500 colour TV setF
- Page 11 and 12: Technology of Q 2500 colour TV setS
- Page 13 and 14: Technology of Q 2500 colour TV setQ
- Page 15 and 16: Technology of Q 2500 colour TV setQ
- Page 17 and 18: Technology of Q 2500 colour TV setW
- Page 19 and 20: Technology of Q 2500 colour TV setQ
- Page 21 and 22: Technology of Q 2500 colour TV set2
- Page 23 and 24: Technology of Q 2500 colour TV setD
- Page 25 and 26: Technology of Q 2500 colour TV set2
- Page 27 and 28: Technology of Q 2500 colour TV setC
- Page 29 and 30: Technology of Q 2500 colour TV setW
- Page 31 and 32: Technology of Q 2500 colour TV setV
- Page 33 and 34: Technology of Q 2500 colour TV setT
- Page 35 and 36: Technology of Q 2500 colour TV setJ
- Page 37 and 38: Technology of Q 2500 colour TV setc
- Page 39 and 40: Technology of Q 2500 colour TV setL
- Page 41 and 42: Technology of Q 2500 colour TV setT
- Page 43 and 44: Technology of Q 2500 colour TV setO
- Page 45 and 46: Technology of Q 2500 colour TV setI
- Page 47 and 48: Technology of Q 2500 colour TV setc
- Page 49 and 50: Technology of Q 2500 colour TV setF
- Page 51 and 52: Technology of Q 2500 colour TV setF
- Page 53: Technology of Q 2500 colour TV sett
- Page 57 and 58: Technology of Q 2500 colour TV setP
- Page 59 and 60: Technology of Q 2500 colour TV set3
- Page 61 and 62: Technology of Q 2500 colour TV setB
- Page 63 and 64: Technology of Q 2500 colour TV setr
- Page 65 and 66: Technology of Q 2500 colour TV setA
- Page 67 and 68: Technology of Q 2500 colour TV set-
- Page 70 and 71: Technology of Q 2500 colour TV setT
- Page 72 and 73: Technology of Q 2500 colour TV setI
- Page 74 and 75: Technology of Q 2500 colour TV setT
- Page 76 and 77: Technology of Q 2500 colour TV set4
- Page 78 and 79: Technology of Q 2500 colour TV setC
- Page 80 and 81: Technology of Q 2500 colour TV set4
- Page 82 and 83: Technology of Q 2500 colour TV setQ
- Page 84 and 85: Technology of Q 2500 colour TV setH
- Page 86 and 87: Technology of Q 2500 colour TV setB
- Page 88 and 89: Technology of Q 2500 colour TV setr
- Page 90 and 91: Technology of Q 2500 colour TV setB
- Page 92 and 93: Technology of Q 2500 colour TV set5
- Page 94 and 95: Technology of Q 2500 colour TV setQ
- Page 96 and 97: Technology of Q 2500 colour TV setQ
- Page 98 and 99: Technology of Q 2500 colour TV setK
- Page 100 and 101: Technology of Q 2500 colour TV set2
- Page 102 and 103: Technology of Q 2500 colour TV setV
<strong>Technology</strong> <strong>of</strong> Q <strong>2500</strong> <strong>colour</strong> <strong>TV</strong> <strong>set</strong>Sat6: Main - analog/digital Twin: analogRF inIoutQoutIout DVBQout DVBLNB1/2SCLSDAAGC InTunB2B4B6B5AFT2AFT1CVBSTSA5523P6Port P0 ... P7W100 toDVB-BoardSCL4 SDA4 U5 U12Video-TPW680 toSignal-Board5.5 10FM InS1 R OutAF Rf/MHzS<strong>TV</strong>0056S1 L OutAF LSGS LNB2LM2574SAA1300digitalanalog10f/MHzBB InI/OSCLSDAU5U12S1 Vid OutS2 Vid RtrnS3 Vid RtrnS2 Vid OutFBASSDA SatSCL SatMax4546U16U26GNDW390 toBasic-BoardAGCSCL DVBSDA DVBDiSEqCGNDW120 toDVB-BoardGND5V12VSCL4SCD4N.C.30VW260 toBasic-BoardDiSEqCW760 toSignal-BoardUlncPhilipstunerCVBSAS SCL SDA Ud U5TDA6151-5xAmplitude+/-/BBMuteFBASSIFW770 fromBasic-BoardSGS LNB2LM2574SAA1300P4P5P7P0P1(TSA5523)P3: Clamping on/<strong>of</strong>fP2: MuteCVBSSIFU26DiSEqCSCL4SDA430V 5VDocument Q <strong>2500</strong> 55 © Loewe ProCollege