Interpreting Full Band Capture and RxMER

In this episode Brady Volpe of Nimble This and The Volpe Firm, and John Downey of Cisco discuss interpreting Full Band Capture (FBC) and RxMER which is the MER of the subcarriers in the OFDM channel. Cable is a technology business and we seem to always come up with new terms and new things to understand and interpret. FBC has been around now but still not everyone knows what it means and how to understand it correctly. RxMER is a bit newer but can still be mysterious to many. There are things you can see with RxMER that are not visible with FBC. We will look at how to interpret each below 50 MHz and with water in the cable.

The discussion is on all things DOCSIS. Tips, suggestions and recommendations. Another power hour of cable.

Interpreting Full Band Capture and RxMER:

1. Intro
2. What is FBC (Full band Capture)
3. Typical View of Full band capture
4. Impairments we see with Full Band Capture
   1. Standing Wave
   2. Resonant Peaking
   3. LTE Ingress
   4. FM Radio Ingress
   5. Suckout
   6. Roll-off
   7. Filter
   8. Adjacency
5. Mapping of Modulation to MER
6. Good Full Band Capture and MER
7. Not all impairments show in Full Band Capture
8. Clustered Impairments
   1. Very good at identifying OSP issues
   2. Don’t send techs to house send to OSP
9. Standing wave
   1. Root cause likely due to no termination or severe impedance mismatch
10. Roll Off
    1. Impacts RxMER
       1. Improper balancing
       2. Bad amplifers
       3. Exceeding amplifier specifications
11. OFDM Support
12. DOCSIS 3.1 Channel (5DB / DIV)
13. 204 in Broadband Library
14. 204 Mhz upstream
15. SCTE EXPO
16. Celebrity Cable Games!!!  Watch Brady and John look inexperienced!  It will be Ugly!
17. DOCSIS Going Green
18. Machine Learning and PMA
19. Jeopardy games

End Podcast

John thank you for your time today. This was a great episode.  Our next Episode 78 in September

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