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, rear view
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R&S®SFD DOCSIS® Signal Generator
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R&S®SFD DOCSIS® Signal Generator, side view and GUI
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R&S®SFD DOCSIS® Signal Generator R&S®SFD DOCSIS® Signal Generator, rear view R&S®SFD DOCSIS® Signal Generator R&S®SFD DOCSIS® Signal Generator, side view and GUI

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
  • Up to 192 MHz signal bandwidth for DOCSIS3.1
  • ARB generator bandwidth up to 200 MHz
  • 3 years waranty icon

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.

SFD DOCSIS® Signal Generator
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R&S®SFD GUI - Downstream configuration

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.

SFD DOCSIS® Signal Generator
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R&S®SFD GUI - Upstream configuration

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.

SFD DOCSIS® Signal Generator
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R&S®SFD GUI - Impairments configuration

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.

SFD DOCSIS® Signal Generator
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R&S®SFD GUI - ARB files

Available options

Software options
Product Description

R&S®SFD-K200

Order number 2118.7423.02

Description

Downstream Generator

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

R&S®SFD-K201

Order number 2118.7830.02

Description

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)

R&S®SFD-K300

Order number 2118.7430.02

Description

Upstream Generator

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

R&S®SFD-K3018

Order number 2118.7452.02

Description

Downstream Frequency Range Extension to 1794 MHz

R&S®SFD-K1050

Order number 2118.7446.02

Description

Signal Interference Simulation

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

R&S®CLGD-K2

Order number 2118.7469.02

Description

Basic Waveform Library

Bundle of frequently used waveforms

General accessories
Product Description

R&S®ZZA-KNA22

Order number 1177.8184.00

Description

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

R&S®ZZA-KNA24

Order number 1177.8149.00

Description

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

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