R&S®ETL TV Analyzer - Product Brochure - Rohde & Schwarz

Measurements forcable TV networksEven though digitization in cable TV networks is rapidlyprogressing, many programs are still transmitted in bothanalog and digital channels, very often together with FM(radio). The R&S®ETL offers the appropriate demodulatorsand specific measurements needed to reliably determinethe signal quality of cable TV and FM (radio) signals. TheR&S®ETL-B203 RF preselector is recommended for maximumperformance when measuring cable TV systems.The R&S®ETL can measure the performance capacity in acable network today, helping ensure the needed performancefor tomorrow's new, highly efficient transmissionstandards.In addition to these measurements, comprehensive analysisfunctions make it possible to quickly and reliably identifyproblems that can occur when transmitting a "mixture"of digital and analog signals.CSO, CTB and C/NLine amplifiers that are not perfectly linear cause unavoidableintermodulation products, which reduces the S/N ratio.Second and third order intermodulation products areespecially crucial for analog TV channels, because theycan lead to a visible reduction in the picture quality. TheR&S®ETL TV analyzer provides composite second order(CSO), composite triple beat (CTB) and carrier to noise(C/N) measurements to detect and quantify intermodulationproducts.Constellation diagram of a DVB-C signal.Composite triple beat (CTB) measurement.Composite second order (CSO) measurement.Carrier to noise (C/N) measurement.26