Generating DOCSIS 3.1 signals in real time with the R&S SFD signal generator from Rohde & Schwarz

Rohde&Schwarz DOCSIS 3.1

Rohde&Schwarz is expanding its DOCSIS portfolio with the R&S SFD DOCSIS® signal generator, which delivers signals in line with the DOCSIS 3.1 transmission standard in real time. This enables cable network operators and component manufacturers to quickly and easily check whether their networks and/or equipment satisfies DOCSIS 3.1 requirements. This one-channel signal generator is extremely compact and highly customizable thanks to its software options concept. Users get a reliable and cost-effective solution that can handle a variety of measurement tasks.

Rohde&Schwarz DOCSIS 3.1

The data-over-cable service interface specifications (DOCSIS) 3.1 enable the fast transmission of data over cable TV networks. Network operators and component manufacturers are currently faced with the challenge of implementing and integrating this standard in order to keep a competitive edge. Along with television services, data streams with extremely high data rates must be transmitted reliably. The R&S SFD from Rohde & Schwarz lets users test DOCSIS networks and devices for standard-compliant performance.

The R&S SFD signal generator produces high-quality upstream and downstream signals in real time in line with DOCSIS 3.1, DOCSIS 3.0 and J.83/A/B/C. It also supports analog cable TV standards. Depending on the standard, the signal undergoes OFDM, A-TDMA, S CDMA or analog modulation. The level, frequency, forward error correction (FEC) and constellation can be configured. The R&S SFD supports the transmission of TV services as well as data services. Data can be generated internally or fed from external sources over IP.

Thanks to its digital signal generation capabilities, the R&S SFD is ideal for testing tuners, cable modems and upstream CMTS receivers in R&D and production, as well as for simulating DOCSIS 3.1 signals in real cable segments. For realistic signal generation, the generator can add interference such as noise, phase noise, hum, tilt and even a defined bit error rate. It has an ARB generator that can generate signals with up to 200 MHz bandwidth.

The R&S SFD comes in a one-half 19" housing that takes up merely two height units. The complex signal generation process can be conveniently configured from a PC via a web GUI. Remote control via SCPI commands enables the generator to be used in automatic test systems. The R&S SFD can be adapted to different applications thanks to its software options concept.

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