Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Cursitor Doom Newsgroups: sci.electronics.design Subject: Re: A Complex Metaphysical Conundrum Date: Thu, 11 Apr 2024 20:52:24 +0100 Organization: A noiseless patient Spider Lines: 68 Message-ID: <4ifg1j1uadn3opvi48vd6q3u3uok7t795g@4ax.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Injection-Date: Thu, 11 Apr 2024 21:52:27 +0200 (CEST) Injection-Info: dont-email.me; posting-host="3ee569d00c4084ce2e4c35b0d486ea2c"; logging-data="1974035"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX184FLqwV/1sd8niAaEuFeyQa9zQ1h5420s=" User-Agent: ForteAgent/8.00.32.1272 Cancel-Lock: sha1:suYt+to9MgFXmmi6KU5bd2jdXl4= Bytes: 3935 On Thu, 11 Apr 2024 15:08:44 -0400, "Edward Rawde" wrote: >"Cursitor Doom" wrote in message >news:qjbg1jh7baj22i618rcafvo80rcgcm7ojn@4ax.com... >> On Thu, 11 Apr 2024 14:33:45 -0400, "Edward Rawde" >> wrote: >> >>>"Cursitor Doom" wrote in message >>>news:ar1g1jdn81s994gd5brslvrrlns8jrtq13@4ax.com... >>>> On Wed, 10 Apr 2024 18:02:50 +0100, Cursitor Doom >>>> wrote: >>>> >>>>>Gentlemen, >>>>> >>>>>This is an exam question that trips up even some of the best students. >>>>>See what you make of it! >>>>> >>>>>Q: Is this statement correct: 'The signal level at the modem input >>>>>increased by 2dBmV going from +3dBmV to +5dBmV.' >>>>> >>>>>Your pal, CD. >>>> >>>> Okay, here's the answer you've been waiting for from some guy on the >>>> internet in this record-low participation quiz. This URL takes you >>>> directly to the relevant section to save time: >>>> >>>> https://youtu.be/jOVa4xJSLiA?list=PLl-kpmJ-_T4DMeDalokqXz7u-ReHZi08p&t=1466 >>>> >>>> So it turns out that John, Edward and myself were all wrong and only >>>> Jason and Jeroen were right! And the proof is right there in the >>>> video. >>>> >>>> >>> >>>I don't see any proof of anything in the section of the video you posted. >>>I didn't watch the entire video. >>>Maybe you should post the proof for this example in text and ask why a 30 >>>minute video is needed if a few lines of text is enough. >>>DOCSIS isn't my field but I would have thought that the average cable >>>modem >>>could report whether or not it's happy with the signal levels. >>>The ISP/Cable company I use ripped the cable and phone lines out and put >>>fibre to the home into the small town I live in about a year ago. >>>So DOCSIS is history here. >>> >> >> Sorry, sarcasm doesn't come across very well at all via this medium! >> John knows what I mean as we're both veterans here. I actually agree >> with you. The question itself is just plain stupid if the answer >> suggests that two absolute quantities added together cannot make an >> absolute total. > >Pompous twit might be going a bit far but that's what came to mind while I >watched a few minutes of the video. >The guy with the headphones seems embarrassed. > >I did manage to find this >https://www.scte.org/standards/library/catalog/scte-270-mathematics-of-cable/ >I'll add it to my collection of pdfs I've had a quick look through but never >read. > The guy with the phones introduces him as a 50 year veteran of the cable industry but doesn't set out his precise qualifications, so perhaps he has none! Thanks for the link. I save all such documents for off-line reading on plane flights and such like.