cable Archives

6 03, 2023

Did You Know? Balancing Amplifiers and Other Critical Broadband Concepts

Mia Colabrese2023-03-06T10:06:23-05:00March 6th, 2023|

Welcome to the latest episode of "Did You Know" with Brady Volpe and special guest John Downey of Cisco. In this episode, we'll be discussing "Did you know? Balancing Amplifiers and Other Critical Broadband Concepts" some of the most important topics related to balancing amplifiers, cable & fiber, signals & spectrum analyzers, downstream signal levels, upstream signal levels, bits, bytes, nibbles, and more. Whether you're a seasoned professional or a newcomer to the industry, this video is packed with high-quality information that will help you stay up-to-date with

23 02, 2023

Why should PNM be on your mind?

Mia Colabrese2023-02-23T13:29:46-05:00February 23rd, 2023|

Why should PNM be on your mind? Discover the power of PNM in this informative panel discussion with industry leaders Brady Volpe, Jason Rupe of CableLabs, and Larry Wolcott of Comcast. Learn why PNM should be top of mind for anyone in the tech industry and the numerous benefits it offers. Tune in now and gain valuable insights from the experts in this must-watch video! Be sure to join and ask your own questions in the live chat! Topics: 0:00 Inro 2:15 What is FMECA 5:00 Where FMECA

22 02, 2023

Are Staples in Coax Cable Impacting My DOCSIS speed?

Mia Colabrese2023-02-22T17:43:08-05:00February 22nd, 2023|

I recently posted a YouTube short (https://www.youtube.com/shorts/n5ucjCb-iGA). ) about how staples in coaxial cable can cause micro-reflections and interfere with subscriber modems. The video was well-received, and I received a lot of feedback, including real-world experiences and questions about the implications of these issues. Let’s take a closer look at this subject. Staples in coax cable meets the real world Let’s start off with an example of real-world feedback I received. The example goes as follows: “I’ve had calls for this. Poor US voice quality. My worst

29 01, 2023

What is a dB?

Mia Colabrese2023-05-01T16:12:26-04:00January 29th, 2023|

What is a dB? RF and Cable Basics :: Brady Volpe and Ron Hranac discuss RF and cable basics in a new series designed to help those who are interested in understanding RF and Cable TV technology a little better. In this first episode we cover what is a decibel (dB). This is a fundamental unit of measure that every person working in the cable industry should understand. To learn more, watch this episode 0:00 Intro 4:30 The Decibel Primer Beginning 5:13 What is a Logarithm 9:15 Question

27 01, 2023

OUDP Leakage Detection

Mia Colabrese2023-01-29T16:29:25-05:00January 27th, 2023|

Brady Volpe, John Downey, Jason Miller (Cisco) and Flavio Marcon (Effigis) discuss how OFDM Upstream Data Profile (OUDP) test burst in cable modems are used in the measurement of cable leakage tests in high-split cable plant. • What is leakage testing and why do we need it? • How is leakage testing done today • What is high-split and why are we do we need it? • Why can’t we do leakage testing the same way we have been in a high split system? • What is OUDP?

13 12, 2022

OFDMA Capacity Estimation

Mia Colabrese2023-01-27T12:27:23-05:00December 13th, 2022|

OFDMA Capacity Estimation, pre-eq, LTE & 5G Ingress and more! Your questions answered Brady Volpe and John Downey discuss OFDMA Capacity Estimation, pre-eq, LTE & 5G Ingress and more! In this episode we cover incoming questions from our listeners covering a wide variety of topics. Be sure to join and ask your own questions in the live chat! 0:00 Intro 3:55 Calculating OFDMA Capacity 11:56 Summary of SC-QAM and OFDMA Calculations 17:40 Understanding 1.6 MHz Upstream power reference 28:14 Entering the industry and finding training 36:17 What are

24 10, 2022

What is Possible with a DOCSIS 3.1 Modem Today

Mia Colabrese2022-10-24T11:38:28-04:00October 24th, 2022|

Brady Volpe and John Downey discuss what you can expect to get out of DOCSIS 3.1 cable modem today. How many modems can transmit in a 6.4 MHz OFDMA channel? How much life is in the DOCSIS 3.1 modem for your network. Also a SCTE EXPO overview and wrap. What is Possible with a DOCSIS 3.1 Modem Today? This is episode 85 of Get Your Tech On, our show on All Things DOCSIS. Our topic for today is What is Possible with a DOCSIS 3.1 Modem, an

12 09, 2022

DOCSIS Softwarization in a DAA and Virtualized Network

Mia Colabrese2022-10-24T10:57:55-04:00September 12th, 2022|

As technology continues to evolve, DOCSIS Softwarization in a DAA and virtualized network is a necessity. What does this mean exactly? Join Brady Volpe with special guest Tadeusz Ciesielski, Chief Technology and Innovation Officer at Falcon V Systems as they discuss the evolving technology hurdles cable operators face as DOCSIS hardware becomes increasingly more DOCSIS software. Management of critical DOCSIS 3.1 and DOCSIS 4.0 infrastructure requires software orchestration. Further, virtualization and virtual CMTSs (vCMTS) can benefit from rapid software deployment cycles. Aligning to these changes requires operational

17 08, 2022

Understanding Cable Network RF Return Path Signal Levels and Balancing

Mia Colabrese2022-08-17T12:43:19-04:00August 17th, 2022|

Brady Volpe and John Downey discuss the theory of operation of return path signal levels in the return path. Why does the transmit power increase, rather than decrease like the downstream? How do two way splitters impact upstream and downstream signal levels? Why is the return always higher than the value the of tap +20? And more examples and discussion on the impact of RF in the cable network and troubleshooting. Here is a link to the SCTE Document: https://www.scte.org/standards/library/catalog/scte-280-understanding-and-troubleshooting-cable-rf-spectrum/ 0:00 Intro 1:00 Understanding FBC doc

7 01, 2021

NanoVNA Calibration to 75 Ohm for CATV

brady2022-07-04T19:38:55-04:00January 7th, 2021|

NanoVNA Calibration for CATV 75 Ohm This article focuses on calibration of the NanoVNA to a 75 ohm environment. There's a lot of talk about the NanoVNA with calibration, the NanoVNA come's standard with 50 ohm SMA connectors on it, but for CATV broadband networks we must calibrate to a 75 ohm standard and not the 50 ohm cal standards that come with the NanoVNA. There are a lot of discussions on the forms about calibrating and that's the proper way of calibrating nano VNAs for a 75