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| Test Equipment Anonymous (TEA) group therapy thread |
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| Cerebus:
--- Quote from: tautech on July 08, 2022, 11:35:59 pm ---... being their biggest focus rather than staying in their lane and sticking to their knitting ... --- End quote --- Would Sir like his metaphors diced, or scrambled? :) (Only Mickey Spillane is allowed to have his metaphors hard boiled.) |
| 25 CPS:
--- Quote from: Cerebus on July 08, 2022, 11:20:53 pm ---The truly worrying thing about the Rogers meltdown is if there is anyone competent at Rogers and they were listened to it would not be possible for all of the infrastructure of a telco, encompassing Internet, voice, private data and so on to collapse together. The only way this can happen is by creating a single point of failure for a collection of systems that, if built organically, or haphazardly, or even randomly, would not naturally have a single point of failure. You have to really go out of your way, and be monumentally stupid, to create a scenario where this is possible. My whole life in the ISP/telco world was about building in as much fail-safe, redundancy, and generally avoiding "house of cards" scenarios as ingenuity and budgets would stretch to. i.e. the exact opposite to what Rogers must have done. I've presided over some nasty outages in my time, but the longest one I can recall that affected multiple customers simultaneously was about 4 hours, and was restricted to just one area, perhaps one Internet PoP, or a set of International voice routes, etc. etc. I never had a whole network fuck up that took out all services and the worst, as in largest number of customers affected, would have BGP related, taken 15-30 minutes to fix and perhaps two hours for everything to settle back to normal. Incredible, truly incredible. There's been a trend recently for larger and larger service providers to somehow manage to cause whole network crashes which affect millions of direct and indirect customers. That's worrying in itself, but no one seems to have managed to fuck up as comprehensively as Rogers appear to have. --- End quote --- The Canadian telecommunications industry has always been very well protected and lacks competition, meaningful regulation, and a whole raft of other complaints. Rogers and Bell aren’t just telecommunications companies, they’re also giant media conglomerates here. Basically, they’re representatives of several over-consolidated industries. Another example, look at the key players behind Maple Leaf Sports and Entertainment. See any names you recognize? The bottom line is, they’re well protected, have no meaningful competition or oversight, and they operate the way they do because they can. |
| vk6zgo:
--- Quote from: 25 CPS on July 09, 2022, 01:54:36 am --- --- Quote from: Cerebus on July 08, 2022, 11:20:53 pm ---The truly worrying thing about the Rogers meltdown is if there is anyone competent at Rogers and they were listened to it would not be possible for all of the infrastructure of a telco, encompassing Internet, voice, private data and so on to collapse together. The only way this can happen is by creating a single point of failure for a collection of systems that, if built organically, or haphazardly, or even randomly, would not naturally have a single point of failure. You have to really go out of your way, and be monumentally stupid, to create a scenario where this is possible. My whole life in the ISP/telco world was about building in as much fail-safe, redundancy, and generally avoiding "house of cards" scenarios as ingenuity and budgets would stretch to. i.e. the exact opposite to what Rogers must have done. I've presided over some nasty outages in my time, but the longest one I can recall that affected multiple customers simultaneously was about 4 hours, and was restricted to just one area, perhaps one Internet PoP, or a set of International voice routes, etc. etc. I never had a whole network fuck up that took out all services and the worst, as in largest number of customers affected, would have BGP related, taken 15-30 minutes to fix and perhaps two hours for everything to settle back to normal. Incredible, truly incredible. There's been a trend recently for larger and larger service providers to somehow manage to cause whole network crashes which affect millions of direct and indirect customers. That's worrying in itself, but no one seems to have managed to fuck up as comprehensively as Rogers appear to have. --- End quote --- The Canadian telecommunications industry has always been very well protected and lacks competition, meaningful regulation, and a whole raft of other complaints. Rogers and Bell aren’t just telecommunications companies, they’re also giant media conglomerates here. Basically, they’re representatives of several over-consolidated industries. Another example, look at the key players behind Maple Leaf Sports and Entertainment. See any names you recognize? The bottom line is, they’re well protected, have no meaningful competition or oversight, and they operate the way they do because they can. --- End quote --- Competition in Telecommunications is pretty much fake anyway. The telecomms "backbones" are usually owned by one or two large organisations, with many of the so-called "Telcos" being basically sellers of phones & similar stuff, & resellers of the services provided by the majors. It is really the only practical way of doing things with the current obsession with private ownership of public utilities. The other day, we had a loss of internet services from our provider. Just out of interest, I had a look on my Telstra connected cellphone to see if I could carry on looking at this forum. Nope! Later, the Internet provider reported that there had been a loss of Optus connectivity, so they had no Internet service to provide. OK, but wait, Telstra is the rival of Optus, & they both are connected to the National Broadband Network (NBN), so surely it would have been a NBN problem? The other possibility is that not only my Internet provider, but Telstra's cellphone service obtain Internet material from Optus. Which all goes back to "fake competition"! |
| mnementh:
--- Quote from: tautech on July 09, 2022, 12:15:49 am --- --- Quote from: mnementh on July 08, 2022, 11:50:48 pm ---Actually, I was thinking to make a header so I could plug the HP pod and whip leads directly into the oz2cpu scope PCB. As I said, those will probably be more than long enough for anything I'd be doing, unless I change my mind and put the scope up higher on my bench, which is pretty unlikely ATM. I was asking about MK's project since you linked to it at the beginning of the SDS2000X thread. :-// Not knowing what the difference is between the Siglent frontend and the HP braided cables, I'm leery of just plugging random lengths of either braided cable or micro-coax into the front of the scope without any compensation, or the wrong compensation. I saw the issues oz2cpu was having there in the beginning. mnem :-/O --- End quote --- OK so if you already have the HP pod den go widdat ! Be aware you only need get something 1/2 clean into the LA input terminals as what's shown on the display in Digital mode bares little resemblance to the actual signal. IIRC there's discussion about this in the DIY thread. IMO coax LA probe set compensation is likely to be pretty much an industry standard however the truth of the matter is suck it and see. But the fact that we don't see cries that 'it don't work properly' for any of these DIY creations which points to them being fairly forgiving. --- End quote --- I don't have the [hp] pod yet... but they are available pretty reasonably, and sometimes you even get a few genny HP grabbits. It's trying to get a full set with the grabbits and the braided cable and not in train wreck condition that's difficult. Vince has no idea how lucky he got. ;) That said... I was thinking that getting the MSO functions working on LeSiglent was probably a better place to put that recovered money than trying to find/fix a 546xxD. In all honesty, I bought the 54621D in a moment of weakness; when I saw Kosmic's issues with his purchase, I started to think my sale was going to evaporate too, so I got the tekyard turd for myself as I dunno... a consolation prize...? :-DD Don't get me wrong... if I see another 546xxD at a crazy good price I'll probably get it, but I am not stalking them as I once did. mnem *heeds Hypnos' siren call* :=\ |
| tautech:
--- Quote from: mnementh on July 09, 2022, 02:41:42 am --- --- Quote from: tautech on July 09, 2022, 12:15:49 am --- --- Quote from: mnementh on July 08, 2022, 11:50:48 pm ---Actually, I was thinking to make a header so I could plug the HP pod and whip leads directly into the oz2cpu scope PCB. As I said, those will probably be more than long enough for anything I'd be doing, unless I change my mind and put the scope up higher on my bench, which is pretty unlikely ATM. I was asking about MK's project since you linked to it at the beginning of the SDS2000X thread. :-// Not knowing what the difference is between the Siglent frontend and the HP braided cables, I'm leery of just plugging random lengths of either braided cable or micro-coax into the front of the scope without any compensation, or the wrong compensation. I saw the issues oz2cpu was having there in the beginning. mnem :-/O --- End quote --- OK so if you already have the HP pod den go widdat ! Be aware you only need get something 1/2 clean into the LA input terminals as what's shown on the display in Digital mode bares little resemblance to the actual signal. IIRC there's discussion about this in the DIY thread. IMO coax LA probe set compensation is likely to be pretty much an industry standard however the truth of the matter is suck it and see. But the fact that we don't see cries that 'it don't work properly' for any of these DIY creations which points to them being fairly forgiving. --- End quote --- I don't have the [hp] pod yet... but they are available pretty reasonably, and sometimes you even get a few genny HP grabbits. It's trying to get a full set with the grabbits and the braided cable and not in train wreck condition that's difficult. Vince has no idea how lucky he got. ;) mnem *heeds Hypnos' siren call* :=\ --- End quote --- What's pretty reasonably ? TBH you should do the research to find the Pt#'s for the same or close LeCroy, Tek and Rigol LA PCie probes and try and pick one of them up reasonably. The grabbers are no big deal if you can get the rest of the probe complete. https://www.aliexpress.com/item/1005001445436599.html?spm=a2g0o.productlist.0.0.6d8235f6zMmebI&algo_pvid=54d566f8-b897-48d2-b287-45631fddc89e&algo_exp_id=54d566f8-b897-48d2-b287-45631fddc89e-35&pdp_ext_f=%7B%22sku_id%22%3A%2212000016137429774%22%7D&pdp_npi=2%40dis%21USD%21%2110.89%21%21%21%21%21%4021086d9416573250026213809e2b95%2112000016137429774%21sea Just don't buy this garbage: https://www.aliexpress.com/item/32981701765.html?spm=a2g0o.productlist.0.0.6d8235f6zMmebI&algo_pvid=54d566f8-b897-48d2-b287-45631fddc89e&algo_exp_id=54d566f8-b897-48d2-b287-45631fddc89e-33&pdp_ext_f=%7B%22sku_id%22%3A%2266800661735%22%7D&pdp_npi=2%40dis%21USD%21%212.79%21%21%21%21%21%4021086d9416573250026213809e2b95%2166800661735%21sea |
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