R&S®DSA DOCSIS signal analyzer

Best signal quality for maximum data throughput

R&S®DSA DOCSIS signal analyzer
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R&S®DSA DOCSIS signal analyzer, side view
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R&S®DSA DOCSIS signal analyzer, rear view
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R&S®DSA DOCSIS signal analyzer R&S®DSA DOCSIS signal analyzer, side view R&S®DSA DOCSIS signal analyzer, rear view

Key facts

  • Demodulation and analysis of DOCSIS 3.0/3.1 and EuroDOCSIS 3.0 downstream and upstream signals in realtime
  • Demodulation and analysis of digital TV signals (J.83/A/B/C, DVB-C) in realtime
  • Residual MER ≥ 50 dB with DOCSIS 3.1
  • Residual MER ≥ 56 dB with SC-QAM
  • Dual receivers for downstream (47 MHz to 1794 MHz) and upstream (5 MHz to 204 MHz)

The best in realtime

Only the highest signal quality ensures maximum throughput. The R&S®DSA DOCSIS signal analyzer has been designed to support users by ensuring the highest signal quality. DOCSIS is the standard for transmitting IP data within hybrid fiber coaxial (HFC) cable TV networks. The new DOCSIS 3.1 standard supports unprecedented data rates, meeting the demand for increased data throughput. The R&S®DSA allows precise, gapless signal analysis of DOCSIS 3.0, EuroDOCSIS 3.0 and DOCSIS 3.1 signals on the physical layer in realtime. A user can detect effects that degrade signal quality, e.g. ingress, reflections and laser clipping. With its dual receivers, the R&S®DSA analyzes downstream and upstream signals.

Features & benefits

Powerful, gapless DOCSIS downstream signal analysis

  • FPGA-based demodulation
  • Realtime signal analysis
  • Maximum performance
  • Integrated spectrum analysis
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R&S®DSA - Overview DOCSIS 3.1 downstream signal

Downstream DOCSIS 3.1 overview

Detailed analysis of upstream signals

  • Additional RF receiver for upstream signals (model 03)
  • FPGA-based realtime demodulation
  • Detailed upstream analysis R&S®DSA-K1500
  • Cable modem ranging test
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R&S®DSA – Overview cable modem ranging analysis

Easy testing of a DOCSIS 3.0 cable modem upstream signal

Digital TV signal analysis for interference-free operation in parallel with DOCSIS

  • FPGA-based demodulation
  • Realtime signal analysis
DSA DOCSIS signal analyzer
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R&S®DSA - J.83 SC-QAM IQ constellation - Nothing remains invisible.

Constellation diagram of Digital TV signal

Available models
Model name
Frequency range downstream
Frequency range upstream

Order number 2118.7800.02

Frequency range downstream
47 MHz to 1794 MHz
Frequency range upstream

Order number 2118.7800.03

Frequency range downstream
47 MHz to 1794 MHz
Frequency range upstream
5 MHz to 204 MHz

Available options

Software options

Order number 2118.7723.02

DOCSIS upstream demodulation/analysis

Order number 2118.7730.02

J.83, D3.0 DS demodulation/analysis

Order number 2118.8236.02

R&S®TVSCAN 2.0 Automated measurement of multiple TV and DOCSIS channels

Order number 1175.3104.00

19" Adapter 4E 3/4 T350

Related product videos

SC-QAM downstream signal analysis

Analysis of DOCSIS 3.0 downstream signals and digital TV signals.



Versatile functions for analyzing DOCSIS signals in HFC cable networks. Touchscreen operation.


Spectrum analysis

All-in-one Integrated spectrum analysis for downstream and upstream.


Related application videos

OFDM downstream signal analysis

Analysis of wideband DOCSIS 3.1 downstream signals.


Upstream signal analysis with the R&S®SFD

Convenient upstream measurements for testing network segments with the R&S®SFD DOCSIS signal generator.


DOCSIS cable modem ranging analysis

Testing the RF interfaces of a cable modem with the cable modem ranging analysis function.


DOCSIS upstream signal analysis in live operation

Analysis of DOCSIS upstream signals from selected cable modems in live cable networks using the unique dynamic upstream analysis function.


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General and legal information

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Terms & Conditions of the Prize Draw 10 years Rohde & Schwarz oscilloscopes

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

6. The draw takes place at Rohde & Schwarz headquarters, Muehldorstrasse 15, 81671 Munich. The winner of the prizes will be informed by e-mail within 5 (5) working days.

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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10. Personal data will be processed only for the purpose of this prize draw and deleted four (4) weeks after the draw, if not agreed otherwise.

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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13. The draw and any contractual relationship arising therefrom between R&S and the respective participant shall be governed by and construed in accordance with the laws of Germany, without any recourse to the conflict of laws. The courts of Munich, Germany, shall have exclusive jurisdiction in case of any disputes arising directly or indirectly from the participation in this Competition.