R&S®CLGD DOCSIS cable load generator

Multichannel signal generator for DOCSIS 3.1 downstream and upstream

R&S®CLGD DOCSIS Cable Load Generator
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R&S®CLGD DOCSIS Cable Load Generator, rear view
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R&S®CLGD DOCSIS Cable Load Generator
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R&S®CLGD DOCSIS Cable Load Generator, side view and GUI
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R&S®CLGD DOCSIS Cable Load Generator R&S®CLGD DOCSIS Cable Load Generator, rear view R&S®CLGD DOCSIS Cable Load Generator R&S®CLGD DOCSIS Cable Load Generator, side view and GUI

Key facts

  • Downstream: 47 MHz to 1218 MHz/1794 MHz, Upstream: 5 MHz to 204 MHz
  • Frequency range in upstream: 5 MHz to 204 MHz
  • DOCSIS 3.1, DOCSIS 3.0, J.83/A/B/C and analog TV
  • Up to eight times 192 MHz signal bandwidth for DOCSIS 3.1
  • ARB generator bandwidth up to 200 MHz

DOCSIS 3.1 full channel load, realtime 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. Signals can be freely combined in the downstream or upstream, allowing users to simulate any conceivable channel loading scenario in the lab.

Features & benefits

Full channel load in the downstream

Flexible realtime downstream modulation

The R&S®CLGD 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 DOCSIS3.1 and 47 MHz to 1218 MHz for DOCSIS3.0 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®CLGD.

CLGD DOCSIS Cable Load Generator
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R&S®CLGD GUI - Multiple DOCSIS 3.1 channels

The R&S®CLGD provides up to eight DOCSIS 3.1 channels. All channels can be set via GUI independently of each other.

Multichannel upstream signal generation

Flexible multichannel upstream modulation

The upstream frequency range is 5 MHz to 204 MHz. Within this range, a flexible combination of DOCSIS 3.1 (OFDMA) and DOCSIS 3.0 (TDMA or CDMA) signals can be generated. The trigger function allows precise burst timing control. The R&S®CLGD is an ideal solution for testing tuners, cable modems and upstream CMTS receivers.

CLGD DOCSIS Cable Load Generator
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R&S®CLGD GUI - Upstream generation

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®CLGD can add interference such as noise, impulsive noise, phase noise, AC hum, tilt and microreflections. The signal tilt can be set positive or negative for simulation or compensation of the frequency response of a real coax CATV cable.

CLGD DOCSIS Cable Load Generator
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R&S®CLGD GUI - Impairments configuration

The influence of signals in adjacent channels with impairments is a research topic of great interest. The R&S®CLGD makes such simulations possible.

From DOCSIS 3.0 to DOCSIS 3.1

Simulate any conceivable channel loading scenario in the lab

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. In the downstream or upstream, signals can be freely combined, allowing users to simulate any conceivable channel loading scenario in the lab.

CLGD DOCSIS Cable Load Generator
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R&S®CLGD - Flexible CATV channel plans

The R&S®CLGD is ideal for examining the mutual influence between DOCSIS 3.1, 3.0 and TV channels to ensure the coexistence of new data services.

Available options

Software options
Product Description

R&S®CLGD-K2

Order number 2118.7469.02

Description

Basic Waveform Library

Bundle of frequently used waveforms

R&S®CLGD-K200

Order number 2118.6962.02

Description

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

R&S®CLGD-K201

Order number 2118.7798.02

Description

Enhanced 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®CLGD-K300

Order number 2118.6979.02

Description

Upstream Generator - DOCSIS 3.1 and 3.0, upstream modulation, 5 MHz to 204 MHz

R&S®CLGD-K1050

Order number 2118.6991.02

Description

Impairments Simulation - DOCSIS 3.1/3.0, J.83/A/B/C, analog TV, Downstream modulation, 47 MHz to 1218 MHz

R&S®CLGD-K3018

Order number 2118.6985.02

Description

Extended Frequency Range - Interferer simulation, AWGN, phase noise, AC hum, micro reflections

Recommended extras
Product Description
ZZA-KN2_19inAdapter.jpg

R&S®ZZA-KN2

Order number 1175.3010.00

Description

19" Rack Adapter

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