DOCSIS Signal Generator
The DOCSIS Signal Generator (SFD), developed and produced in cooperation with Rohde & Schwarz is a real-time, high-fidelity single carrier SC-QAM and OFDM downstream and upstream RF generator for tests when the quality of the channel under test is of most importance.
With a 10 Gigabit Ethernet SFP+ interface, the SFD supports real-time burst upstream and downstream modulation of user data.
Complete Suite of DOCSIS Signals
The SFD supports real-time modulation with DOCSIS 3.1 OFDM and OFDMA burst modulation. Legacy SC-QAM J.83 Annex A/B/C and upstream burst A-TDMA and S-CDMA are also supported.
Simulation of RF Impairments
Emulating real world environments in the lab requires the replication of RF impairments. CLGD simulates AM Hum, Phase Noise, Micro-reflections, Narrow-bandwidth Interferers, and AWGN.
The SFD is designed to work with the DSA and offer advanced functions like Cable Modem Ranging and in plant upstream carrier testing.
Generating an exceptionally high-fidelity carrier, the SFD can be used as a channel under test in many applications where it is important to know how the transmission medium affects the carrier. The SFD generates an extremely high-quality upstream or downstream carrier for testing applications:
- DOCSIS 3.0 with live streamed data
- DOCSIS 3.1 with live streamed data
- Testing up to 1.8GHz
- Generate Analog Video & CW
- Apply channel impairments and distortions
STB and Cable Modem Validation
The carrier from the SFD can be used as a channel under test for development and validation of set top box (STB) and cable modem silicon and products. When paired with the DSA, the SFD can range DOCSIS cable modems for manufacturing CM validation.
HFC Equipment Validation
Fiber nodes, RF Amplifiers, Taps, Splitters, and other equipment that is deployed in HFC networks need to be fully characterized and the SFD offers an ideal channel under test this characterization.
HFC network operators can now use the SFD to generate burst upstream carriers at any part of their network and analyze its performance using the DSA.