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| Questions on some older used Scopes and Probe Rec's |
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| Fulmir:
Okay, I think I'm convinced. I ended up digging into some of the slightly higher end scopes from Siglent and it seems I was a bit hasty in proclaiming 4k for something with equivalent or better functionality. The SDS2104X Plus can be hacked up to 500MHz and has most or all of the math features of the Lecroy, more memory depth, and the option of digital signals decoding provided I'm willing to either pay out the nose for a probe or build my own, and it runs about twice what I'd be paying for the LC554DL with shipping and probes. Plus the time spent fiddling to get it set up, and probably a small tower of cable adapters to get it connected to any computer built since 2005... :-/O For the record though I do feel pretty lucky in my ability to pluck good deals out of the ether, I've gotten pretty good at figuring out what looks like it may or may not work well, this is just my first oscilloscope. The one I was looking at was this one BTW, I feel fine posting it since I don't think I'll be jumping on it... https://accusrc.com/product-Lecroy-544DL-10717 BTW are Accusrc and their Bargain Basement a decent source for used older equipment? |
| Fungus:
--- Quote from: nctnico on July 07, 2022, 07:46:08 am ---The lower end scopes from GW-Instek, MicSig or Siglent (I'd skip Rigol!) run circles around the older oscilloscopes in every way. --- End quote --- Yep, Rigol isn't price competitive any more, the price has been creeping up for some reason. The Instek can be had for the same money and it's a better. The Siglent used to cost about 50% more so a case could be made for getting a Rigol but now it's only about 20% more, so... nope. I left out Micsig because they're kinda hard to get in the USA, but it's what I own and I'd get another one in a heartbeat if it breaks. Here in Europe they're a real bargain right now because Micsig just launched a new model so they're dumping old stock. Oh, wait, there's none of the old ones left! Too bad if you didn't get one. >:D ( This is the new one ) |
| G0HZU:
I kind of went through the same dilemma a few days ago when my old HP 54825A Infinium scope started to become unreliable. If I couldn't fix it then I had the choice of buying something like one of the new Siglent HD scopes or to try and buy another used scope from HPAK. On ebay HPAK stuff seems to be really overpriced for the age/condition so bargains are hard to spot. I really like the user interface of the Infinium both in terms of the layout of the controls and also the GUI. I also trust the measurement tools and it's easy to get data from it onto another PC. However, the limited memory depth means that this scope is of limited use for digital stuff, especially for SPI bus work for example. I don't think I'd like to pay out £500-£1000 on a used HPAK scope because this usually buys something quite old like my old 54825A. Mine has the later factory upgrades so it is quite fast but it lacks the modern tools and features of the new stuff from Siglent. I think most people would be better off buying a new scope. I suspect part of the reason the HPAK stuff is so expensive is because it often may be in demand to replace faulty gear that has failed in an ATE rack at a manufacturing company. They have deep pockets and can't afford to halt the ATE for long to wait for a bargain or to rewrite the ATE program for a newer scope. So prices often remain firm for HPAK gear. I managed to get my 54825A working again for the cost of a few capacitors in the PSU but I think I'll look at a new scope as a replacement soon. When the 54825A really became unreliable it happened a couple of days just before I really needed it for a project task. |
| Fulmir:
--- Quote from: G0HZU on July 07, 2022, 08:42:40 pm ---I don't think I'd like to pay out £500-£1000 on a used HPAK scope because this usually buys something quite old like my old 54825A. Mine has the later factory upgrades so it is quite fast but it lacks the modern tools and features of the new stuff from Siglent. I think most people would be better off buying a new scope. I suspect part of the reason the HPAK stuff is so expensive is because it often may be in demand to replace faulty gear that has failed in an ATE rack at a manufacturing company. They have deep pockets and can't afford to halt the ATE for long to wait for a bargain or to rewrite the ATE program for a newer scope. So prices often remain firm for HPAK gear. --- End quote --- The other half of it is that anything in decent condition for a good price gets snapped up fairly quickly. If you search by "Sold" on ebay you find that the "real" price of a lot of this stuff is well below what's actually listed currently. Like $500 scopes selling at Auction or even "Buy It Now" for $200-300, and some of the $1-2k stuff selling for $500-1k, though I'm sure some of that is also going to the bigger resellers who test, refurb, and maybe calibrate it and then post it back up for even higher prices. I think the reason there was such a good deal on that Lecroy is a combination of the damaged bezel and the competition from the newer Siglent scopes. It just wasn't worthwhile for the reseller to go through and spruce it up when the competition is already $800-2k. |
| G0HZU:
Maybe try haggling for a good deal on one of the 100MHz Siglent scopes (and hack it?) and this would then mean you could search in slow time for one of the old 500MHz+ classics from HPAK or Lecroy for a very low price. Patience may be the key here. |
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