Fringe Archives

9 02, 2021

NanoVNA testing Taps, Coax, passives and more part two

Mia Colabrese2021-08-15T16:11:56-04:00February 9th, 2021|

Another power hour of cable with Brady Volpe and John Downey CMTS Technical Leader at Cisco, show real world examples of testing Coax, Taps and other passives. The discussion is on all things DOCSIS. NanoVNA (Vector Network Analyzer) testing: General intro Test equipment RF basics Test One Diplex filter explained active equipment has a diplex filter It enables the plant to be upstream and downstream capable 75 Ohm world Cross over Cold solder joints, fingers touching surface mount components issues with diplex filters The higher the split

NanoVNA testing Taps, Coax, passives and more part one

Mia Colabrese2021-08-15T16:12:51-04:00January 27th, 2021|

Another power hour of cable with Brady Volpe and John Downey CMTS Technical Leader at Cisco, show real world examples of testing Coax, Taps and other passives. The discussion is on all things DOCSIS. NanoVNA (Vector Network Analyzer) testing: General intro Test equipment Test for bad cable, passives and amps Test return loss, insertion loss, etc Why is it important to terminate Question of event error log Loss connectors impact return loss nanoVNA and VNA explained MainLine Tap You can see the entire cable spectrum Return Loss

Fringe – President’s Day Topics

Mia Colabrese2020-07-02T15:20:04-04:00February 20th, 2011|

In case you have some free time on President's Day, here are of couple of things for you to take a look at. On the DOCSIS side, once you have had your dose of tutorials here, head over to the DOCSIS Help Forums at http://www.docsishelp.com/forums . Learn about Alice. While many of you are here to learn about DOCSIS, you may want to take an opportunity to find out the latest in educational software training out of Carnegie Mellon University (CMU). If you got excited about Alice, you may want to take the time to learn about one of the key creators of Alice, Randy Pausch.