DOCSIS Archives

3 10, 2013

DOCSIS PNM DEMO SCTE EXPO 2013 CableLabs Booth #1969

Mia Colabrese2020-04-04T09:20:40-04:00October 3rd, 2013|

DOCSIS PNM DEMO SCTE EXPO 2013 - CableLabs Booth #1969 Come See a DEMO of the exciting DOCSIS PNM Technology at this years SCTE Cable Tech Expo in the CableLabs Booth #1969. Brady Volpe will be giving demonstrations. To find out more about PNM you can also attend one of two PNM presentations or watch a brief tutorial overview. "By using PNM as network probes, cable operators can collect device and network parameters. Combining the analysis of the data along with network topology and device location, it is

30 09, 2013

Smart DOCSIS CMTS Upgrade

Mia Colabrese2021-12-14T15:36:26-05:00September 30th, 2013|

Making a DOCSIS CMTS Upgrade? Make sure you have done your homework. With all of the publicity focussed on DOCSIS on DOCSIS 3.1 many cable operators still have existing networks that are running DOCSIS 2.0 or even DOCSIS 1.1. Many conversations arise around what is the best path forward on making a smart DOCSIS CMTS upgrade. Should investments be made in addition DOCSIS CMTSs identical to equipment already installed? This is especially true when there is a lot of existing DOCSIS 1.1 and 2.0 equipment available at rock

12 09, 2013

DOCSIS 3.1: Begin Preparing Now

Mia Colabrese2013-09-12T14:45:51-04:00September 12th, 2013|

DOCSIS 3.1: Begin Preparing Now Posted on September 11, 2013 by Carl Weinschenk-BTR Experts believe that DOCSIS 3.1 is few years off. The specification has not yet been finalized. After that, test and early customer premise equipment (CPE) and corresponding CMTS and CCAP line cards will be sprinkled through systems. The bottom line is that it will be a long time until DOCSIS 3.1 is an element of everyday cable operations. So preparations should start now. The industry has been down this road before. What seems like a long road, with

9 09, 2013

What is DOCSIS PNM?

Mia Colabrese2021-08-17T16:17:19-04:00September 9th, 2013|

What is DOCSIS PNM and How Does it Work? Recently I wrote about DOCSIS PNM technology and a company working on is called Nimble This. In this article I want to highlight a mechanism behind how DOCSIS PNM works. DOCSIS Pre-Equalization DOCSIS PNM begins with a relatively well known DOCSIS feature called DOCSIS pre-equalization. I've previously covered adaptive pre-equalization, but here is a refresher. Starting with DOCSIS 1.1, pre-equaliztion was added to DOCSIS cable modems. It was later improved in the DOCSIS 2.0 standard adding more equalizer taps

22 08, 2013

Troubleshooting Cable Networks

Mia Colabrese2020-04-02T09:57:28-04:00August 22nd, 2013|

CED Presents an Educational Webcast Troubleshooting Cable Networks - Understanding Ingress Impairments Brady Volpe will be a panelist on: "The two-way nature of cable networks is being increasingly exploited for innovative new features and services, including interactive TV applications, video conferencing, data back up, and wireless backhaul (all in addition to high speed data, VoIP, and Internet TV). Growing reliance on the return path highlights the very common problem of upstream cable ingress interferences. MSO's are planning the deployment of DOCSIS 3.1 technology to offer greater downstream/ upstream

6 08, 2013

A Briefer History of CableTV

Mia Colabrese2021-11-29T14:49:22-05:00August 6th, 2013|

A Briefer History of CableTV For those in the know... A briefer history of CableTV provides an abridged version of how we got to where we are now and CableTVs impact on modern-day test equipment. Looking at the history of CableTV, its beginnings were very humble with many taking credit for its first invention. Let us not delve into those disputes, but look towards where CableTV really started to emerge in the mainstream. It was not until 1947, post WWII when TV began to start getting momentum with

22 07, 2013

DOCSIS Channel Emulator – Impairments Made Easy

Mia Colabrese2013-07-22T09:00:55-04:00July 22nd, 2013|

DOCSIS Channel Emulator - Impairments Made Easy by Averna While at ANGACOM this year I came across Averna's DOCSIS Channel Emulator (DCE). It's an interesting product that can be put to good use in an MSO lab, vendor lab or anyone needing to create real-world impairments that impact DOCSIS. Intrigued by the product, I followed up with Averna and got a hands-on demonstration at Averna's Atlanta office. Averna's DOCSIS Channel Emulator - What's Good... So first, if you are doing DOCSIS testing, it is likely that you have

2 07, 2013

DOCSIS & Testing Best Practices in an All Digital Network

Mia Colabrese2021-11-24T10:51:51-05:00July 2nd, 2013|

DOCSIS & Testing Best Practices in an All Digital Network ANGACOM - 2013 Missed ANGACOM 2013? Don't worry, you can still see the presentation on DOCSIS & Testing Best Practices in an All Digital Network along with the speaker notes for each slide. This was only a 15 minute presentation, so time was limited on the depth of material that could be covered in the time given. Slide 2 – Overview What do I mean by all digital networks and why is the cable industry moving in this

30 05, 2013

Brady Volpe Presenting at ANGACOM June 4th – June 6th

Mia Colabrese2013-05-30T10:16:19-04:00May 30th, 2013|

Come See Brady Volpe present at ANGACOM 2013 Topics: You can also see Brady present on - DOCSIS & Testing Best Practice in an All Digital Plant - Tuesday, June 4, 2013, 12.00 to 1.15 p.m. Pre-equalization analysis (PNM) and the benefits this analysis has for cable operators is the topic Brady Volpe will present on at ANGACOM.de in Cologne Germany next week at the - ANGACOM International Breakfast by SCTE , June 5th, 2013. It will include the activity surrounding the CableLabs initiative on PNM. Additionally Brady Volpe will be in Halle 10.2 (upstairs)

10 03, 2013

DOCSIS Reed-Solomon Codewords

Mia Colabrese2013-03-10T20:01:38-04:00March 10th, 2013|

How many bytes can a Reed-Solomon codeword bite? In my previous article on DOCSIS Codeword Errors, reader "Sandy" asked how many Reed-Solomon codewords would be required to transport a 1518 byte length of data? This is a very good question and one that I had never considered until I first faced when designing DOCSIS data-layer models in MATLAB. In the example I used in my previous article I chose a word that was 16 bytes long. I did this because it made it easy to draw an 8x8