E6D303: E6000 CER RF Impairments

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This self-paced, online course presents the typical RF impairments that are experienced in a CATV network, which are noise, distortion and power issues. The course examines these impairments and how they are reported and measured in the E6000 CER and presents mitigation considerations. This course is based exclusively on DOCSIS issues.

The course includes a study guide available to download and print for taking notes.

Please note:  This course is part of an E6000 CER Advanced Troubleshooting Suite. This robust program equips operators and technicians to address the real world challenges that come with operating the E6000 CER in today's network. The suite consists of four required web-based courses that must be completed before attending the capstone instructor-led course that has intensive hands-on troubleshooting labs reinforcing the content presented in the web-based courses.

The complete E6000 CER Advanced Troubleshooting Suite consists of:

  • E6D301: E6000 CER Cable Modem Registration (online, self-paced)
  • E6D302: E6000 CER Theft of Service Prevention (online, self-paced)
  • E6D303: E6000 CER RF Impairments (online, self-paced)
  • E6D304: E6000 CER Capacity and Bandwidth (online, self-paced)
  • E6D305: Advanced Troubleshooting Capstone (instructor-led lab)

(Note: Separate registration and payment is required for each course.)


  • RF Impairment introduction
  • Noise issues
  • Cable Modem Power issues
  • RF Impairment Ratios
  • Reducing Impairment issues


  • Understanding of DOCSIS 
  • E6000 CER Operations instructor-led course attendance is required


Approximately 90-120 minutes