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SFQ彩色电视信号发生器 SFQ彩色电视信号发生器Basic models·DVB-T：R&S SFQ02+ R&S SFQ-B10·ATSC：R&S SFQ02+ R&S SFQ-B12·ISDB-T：R&S SFQ02+ R& SFQ-B26·DVB-C：R&S SFQ02+ R&S SFQ-B21·J.83-B：R&S SFQ02+ R&S SFQ-B13·DVB-S/-DSNG：R&S SFQ02+ R&S SFQ-B23·Satellite Turbo: R&S sfq02+ R&S SFQ-B23+ R&S SFQ-B25·FM: R&S SFQ02+ R&S SFQ-B2DVB/VSB options·Input interface(ASISPISMPTE310:settable symbol rateaccurate data clock)·DVB-T coder·Hierarchical coding for DVB-T coder·ATSC/8VSB coder·ISDB-T coder·DVB-C coder·J.83-B coder·DVB-S/-DSNG coder·Satellite Turbo·I/Q output/inputTransmission simulation·Fading simulator(6 or 12 paths)·Noise generator·BER measurementBroadband FM options·Broadband FM modulator·FM sound subcarrier with internal audio generators·ADR sound subcarrier with internal MUSICAM generatorsBasic features·Frequency range 0.3MHz to 3.3GHz·Large level range -99.9 dBm to +13 Dbm·Simpleuser-friendly hardkey and softkey control·Large display with all important parameters in headline·Status menu for supplementary information·User-definable transmitter tables·Storage of instrument settings internally and on memorycard·online help·IEC 625/IEEE488 busRS-232-C interface·Modular design·Software update via RS-232-C interface(or memory card)GeneralThe TV Transmitter R&S SFQ is a complete solution for testing digital TV links and receivers.The open-end software and modular hardware make the R&S SFQ future-proof. The standards for DVB-T DVB-S/DVB-DSNG turbocoding DVB-CJ83.-B ATSC/8VSB and ISOB-T are fully complied with. Owing to its adaptability to future system changesthe R&S SFQ is a useful and rewarding investment for your launch onto the digital TV market.Moreoverthe R&S SFQ also processes analog frequency-modulated satellite signals in line with PALSECAMNTSC standards. The sound signals are transmitted using analog FM and digital ADR sound subcarriers.The test signals produced are of high precision and comply with the standardsbut they can also be varied and provided with predefined errors to determine the performance of your products at their limits. The reproducible simulation of real transmission conditions by means of the noise generator and the fading simulator enables the specification of modules under test.ApplicationsBecause of its high signal quality and versatile parameters variationsthe R&S SFQ is ideal as a source for digital terrestrial signals(DVB-TATSC and ISDB-T)for testing satellite (DVB-S/-DSNGturbocoding and FM)and digital cable links (DVB-CJ83.-B)as a standard-signal generator in development as a reference in quality monitoringEMC labs inspectior and test centers and for use in production.The output frequency range allows the R&S SFQ to be used as a back-channel generator and covers future extensions of th satellite IF range.Operational parameters(e.g.roll-offpuncturing rate of QAM mode )can easily be varied. For laboratory applications＆#118alues outside those defined in the standard can be selected. For special measurementse..g.DVB-Tit is possible to switch off modulationindividual carriers or groups of carriers.Sweep can be performed over the complete RF range.A shift function for frequency level and C/N makes it possible to determine the functional limits of the DUTcompensate for extemal matching pads adjust two units to give exactly the same output signaletc.The advantage is that the output signal can be changed as required while the standard/nominal ＆#118alue continues to be displayed on the R&S SFQ.The analog R&S SFQ sulloies frequency-modulated satellites signals conforming to standards.Various TV standards can be selected and up to six sound subcarriers(FM and ADR)can be integrated.In additionexternal sound subcarriers can be applied.Operational parameters are in line with standards; parameters such as amlplitudefrequency and deviation are variable.Signals such as noise or energy dispersal can be added.It is thus possible to test satellite links and recerivers with the aid of standard signals and to check the response to nonstandard signals.