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R&S®SFD DOCSIS signal generator

Single channel DOCSIS 3.1 in realtime

R&S®SFD DOCSIS signal generator
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R&S®SFD DOCSIS signal generator
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R&S®SFD DOCSIS signal generator
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R&S®SFD DOCSIS signal generator
Open Lightbox
R&S®SFD DOCSIS signal generator
Open Lightbox
R&S®SFD DOCSIS signal generator
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R&S®SFD DOCSIS signal generator, Front viewR&S®SFD DOCSIS signal generator, Front HighR&S®SFD DOCSIS signal generator, Side viewR&S®SFD DOCSIS signal generator, Back viewR&S®SFD DOCSIS signal generator, Hero viewR&S®SFD DOCSIS signal generator, Application Image

Key facts

  • Downstream: 47 MHz to 1218 MHz/1794 MHz, Upstream: 5 MHz to 204 MHz
  • DOCSIS3.1, DOCSIS3.0, J.83/A/B/C and analog TV
  • Signal interference and distortion simulation
  • Simultaneous generation of at least 80 SC-QAM channels between 1002 to 1794 MHz
  • ARB generator bandwidth up to 200 MHz

DOCSIS 3.1 single channel realtime generator

The R&S®SFD generates a DOCSIS 3.1 channel in realtime with flexible setting of the level, frequency, constellation and all other parameters according the DOCSIS 3.1 standard. The R&S®SFD can alternatively generate a digital realtime modulated TV signal according the J83A/B/C specification. The content can be fed in via IP or internally generated by the R&S®SFD.

Features & benefits

Signal generation in the downstream

Flexible realtime downstream modulation

The R&S®SFD modulates signals for DOCSIS 3.1, DOCSIS 3.0, digital cable TV in line with J.83/A/B/C in real time. Its downstream frequency range is 47 MHz to 1794 MHz for DOCSIS 3.1 and 47 MHz to 1218 MHz for DOCSIS 3.0 and digtal TV. All parameters can be set via GUI or via SCPI remote commands. The user data to be transmitted can be fed in via IP or internally generated by the R&S®SFD from PRBS or an user file. The SFD-K202 option allows the simultaneous generation of at least 80 SC-QAM channels in the extended operating range of 1002 to 1794 MHz.

R&S®SFD GUI - Downstream configuration
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R&S®SFD GUI - Downstream configuration

Easy to use GUI allows the setup of the downstream signal with all required parameters. Predefinded values speed up the time to the first results.

Signal generation in the upstream

Flexible realtime upstream modulation

The upstream frequency range is 5 MHz to 204 MHz. Within this range, a DOCSIS 3.1 orthogonal frequency division multiple access (OFDMA) signal can be generated in realtime. A DOCSIS 3.0 TDMA or CDMA signal can be produced in realtime in the 5 MHz to 85 MHz range. The trigger function allows precise burst timing control. The R&S®SFD is an ideal solution for testing tuners, cable modems and upstream CMTS receivers.

R&S®SFD GUI - Upstream configuration
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R&S®SFD GUI - Upstream configuration

Easy to use GUI allows the setup of the upstream signal with all required parameters. Predefinded values speed up the time to the first results.

Signal interference and distortion simulation

Simulate realistic receive conditions

For realistic signal generation, the R&S®SFD can add interference such as noise, phase noise, hum, tilt and even a defined bit error rate (BER). The signal tilt can be set positive or negative for simulation or compensation of the frequency response of a real coax CATV cable.

R&S®SFD GUI - Impairments configuration
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R&S®SFD GUI - Impairments configuration

The impairments settings can be mixed and set independed. RF tilt settings (dB/GHz) are set on the home GUI section.

Powerful ARB generator

The integrated ARB generator can generate up to 200 MHz wide signals and is usable in the entire downstream or upstream frequency range. The maximum sample rate is 240 Msamples/s and the ARB file size up to 256 Mbyte.

R&S®SFD GUI - ARB files
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R&S®SFD GUI - ARB files

The most popular signals from worldwide CATV networks can be modulated with the ARB files. The factory files can be extended by user files.

Available options

Software options

Order number 2118.7423.02


Downstream Generator

DOCSIS 3.1/3.0, J.83/A/B/C, downstream modulation, 47 MHz to 1218 MHz


Order number 2118.7830.02


Enhanced Downstream Functions

Insertion of DOCSIS timestamps in downstream PLC, flow rate indicator and additional transmission of DPD messages for profiles B, C and D on the PLC (FSW compatibility mode)


Order number 2118.8242.02


Extended Spectrum Multi-Carrier SC-QAM

DOCSIS 4.0 FDD Multi-Carrier SC-QAM Generation J.83A/B, 1002 to 1794 MHZ 


Order number 2118.7430.02


Upstream Generator

DOCSIS 3.1 and 3.0, upstream modulation, 5 MHz to 204 MHz


Order number 2118.7452.02


Downstream Frequency Range Extension to 1794 MHz


Order number 2118.7446.02


Signal Interference Simulation

Interferer simulation, AWGN, phase noise, AC hum, defined BER


Order number 2118.7469.02


Basic Waveform Library

Bundle of frequently used waveforms

General accessories

Order number 1177.8184.00


19" Adapter BW2010-ADV, 2HU 1/2 + Spare


Order number 1177.8149.00


19" Adapter BW2010 Advanced, Cabinet 2HU 1/2 + ½

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1. The prize draw “10 years Rohde & Schwarz oscilloscopes” (herein referred to as “Draw”) is organized by Rohde & Schwarz GmbH & Co. KG, Mühldorfstraße 15, 81671 Munich, Germany, Tel. +49 89 41 29 0 (herein referred to as “R&S).

2. All participators can register to the draw during January 01, 2020 to December 31, 2020 with their name, company name and business e-mail.

3. Participation is free of charge and not dependent on the purchase of goods or services.

4. The draw is only open to legal entities and only the legal entities are able to win the prizes. An individual person is not allowed to participate on its own name and its own account but as a representative of a legal entity filing the participation form in the name of and on behalf of the legal entity.

5. The prizes to win are 1 of 10 R&S®RTB2000 within the time frame January 1, 2020 to December 31, 2020:

Prize: 1x R&S®RTB2000 Digital Oscilloscope

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7. The authorized representative of the legal entity shall inform Rohde & Schwarz about the acceptance of the price. In case of the denial of the acceptance, or no answer within two (2) weeks, a new winner will be drawn. If no winner can be determined within four (4) weeks, the draw ends and the prize forfeit.

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11. Any Participant who does not comply with these Terms & Conditions may be disqualified by R&S from this Competition. In such cases, prizes can also be withdrawn retrospectively. In case a prize is withdrawn retrospectively due to the non-compliance with these Terms & Conditions, it shall be returned by the respective participant at his cost to R&S’ address mentioned under Nr.1 and a new winner will be drawn.

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