CATV / DOCSIS

Comprehensive testing of DOCSIS 3.1 cable modems, CMTS, network amplifiers and components

The DOCSIS®3.1 standard was created to address two primary needs for cable communications providers: higher data throughput to meet consumers’ demand for high data rate applications and flexibility to support a variety of applications. In addition to this, DOCSIS 3.1 needs to work alongside with the previous DOCSIS generations.

Test & Measurement Solutions for:

Cable modems
CATV amplifiers, lasers and cable network components
Cable Modem Termination Systems (CMTS)

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T&M Solutions for Cable Modem

Precise measurements on CM upstream channels with up to 96MHz channel bandwidth

With the latest release of DOCSIS technology, current Cable Modems (CM) will have to handle both DOCSIS 3.0 and DOCSIS 3.1 signals. In particular DOCSIS 3.1 utilises 192MHz bandwidth channels with OFDM providing high data throughput towards the devices.

DOCSIS 3.1 CM PHY Testing
DOCSIS 3.0 CM PHY Testing

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T&M Solutions for Cable Network Amplifier, DFB Lasers, CATV components

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T&M Solutions for Cable Network Amplifier, DFB Lasers, CATV components

Full channel load conditions for cable amplifier, analogue/digital lasers and RF CATV TV components testing

With the addition of DOCSIS 3.1 the frequency of operation will primarily extend to 1.2GHz and then to 1.8GHz. Current DOCSIS infrastructure might or might not be able to support these frequency extensions and therefore it is necessary for these components to be tested.

CATV amplifier testing
BER measurement testing

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T&M Solutions for CMTS

Cable modem termination system (CMTS)

With the latest release of the DOCSIS specification current CMTS will have to handle both DOCSIS 3.0 and DOCSIS 3.1 signals. DOCSIS 3.1, for example, utilizes 192MHz bandwidth channels with OFDM modulation and constellations as high as 16 kQAM. This could become a challenge for CMTS since the modulation error ratio (MER) must be higher than 50dB. The Rohde & Schwarz signal generators and analyzers address this challenge, providing the following capabilities:

DOCSIS 3.1 CMTS PHY Testing
DOCSIS 3.0 CMTS PHY Testing
Emulation of data traffic from multiple cable modems
Ingress and impairment simulation

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Related products for DOCSIS 3.0 and DOCSIS 3.1

R&S®CLGD DOCSIS cable load generator

The R&S®CLGD is a multichannel signal generator for simulating a cable TV network with full channel loading. It generates broadband data signals for DOCSIS 3.1 as well as digital and analog TV channels.

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R&S–FSW Signal and Spectrum Analyzer

Verify your network and components performance for DOCSIS 3.1 with the state of the art signal and spectrum analyzer R&S®FSW and software options R&S®FSW-K192/K193 for downstream and upstream testing.

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R&S®SFD DOCSIS® signal generator

The DOCSIS® 3.1 standard is driving the trend in cable TV networks toward all-IP.

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R&S®DSA DOCSIS signal analyzer

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.

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Related products for CATV

R&S®ETL TV Analyzer

The R&S®ETL TV analyzer stand for all-in-one. The R&S®ETL combines the functionality of a TV and FM (radio) signal analyzer, a video and MPEG TS analyzer and a spectrum analyzer in a single instrument.

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R&S®BTC Broadcast Test Center

The R&S®BTC broadcast test center is a reference signal generator featuring analysis functions and automated tests for audio, video and multimedia applications.

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In Focus

Safe debugging of embedded power supplies

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Testing high-speed digital lines on PCB

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Analyze EMI problems with the R&S®RTO / R&S®RTE

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Fast analysis of sporadic errors with the history function and 460 Msample memory

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Further information