Suggestions for a good used oscilloscope
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From: Jim Yanik on 9 Dec 2009 19:47 D from BC <myrealaddress(a)comic.com> wrote in news:ep40i5dc83n505lmrpigtigjdvh5ede718(a)4ax.com: > On Wed, 9 Dec 2009 12:34:05 -0800 (PST), Too_Many_Tools ><too_many_tools(a)yahoo.com> wrote: > >>Looking for suggestions for a good used oscilloscope. >> >>Also looking for opinions as to how viable Ebay is today for a source >>of good used oscilloscopes. >> >>Thanks >> >>TMT > > I've bought 2 scopes off Ebay.. > So far positive view and feeling lucky. > > Your bids might be competing with power resellers who flip for profit. > Check Craigslist first then Ebay.. > > WRT TEK scopes; #1.Check TEK's Long Term Product Support(LTPS) list first; you may find your prospective purchase is out of support and no parts available. #2. TDS series scopes did not have manuals containing component level schematics,and were supported by module exchange or "repair and return",and NOT an option for out-of-support instruments.TEK -scraps- the modules once the LTPS period is past. #3. any parts marked 155-xxxx-xx are TEK-made ICs and no longer made,no longer stocked,and no substitutes.TEK no longer makes 234-xxxx-xx and 165- xxxx-xx hybrids either.Those production lines were sold off and long gone. your only source is "parts scopes". -- Jim Yanik jyanik at localnet dot com
From: David L. Jones on 9 Dec 2009 19:51 Too_Many_Tools wrote: > Looking for suggestions for a good used oscilloscope. > > Also looking for opinions as to how viable Ebay is today for a source > of good used oscilloscopes. Very viable, you just have to know what you are buying, and willing to accept the risk that it might have a problem. You pay a lot more for a scope from a reputable test equipment dealer who has checked the scope and offer a right of return, than if you get it from someone who says "know nothing about these things, I plugged it in and it lights up, sold as-is". If it's shown displaying basic waveforms OK then your odds are much higher you'll get a winner. You can often get two "dodgy" ones for the price of one guaranteed one, you feeling luck, punk? :-> People will usually bid like crazy on Tek gear, a bit less so on HP, and much less again on say a Philips or other brand. You might bet better band-per-buck with a lesser brand. Dave. -- ================================================ Check out my Electronics Engineering Video Blog & Podcast: http://www.eevblog.com
From: Phil Hobbs on 9 Dec 2009 19:59 David L. Jones wrote: > Too_Many_Tools wrote: >> Looking for suggestions for a good used oscilloscope. >> >> Also looking for opinions as to how viable Ebay is today for a source >> of good used oscilloscopes. > > Very viable, you just have to know what you are buying, and willing to > accept the risk that it might have a problem. > > You pay a lot more for a scope from a reputable test equipment dealer who > has checked the scope and offer a right of return, than if you get it from > someone who says "know nothing about these things, I plugged it in and it > lights up, sold as-is". > > If it's shown displaying basic waveforms OK then your odds are much higher > you'll get a winner. > > You can often get two "dodgy" ones for the price of one guaranteed one, you > feeling luck, punk? :-> > > People will usually bid like crazy on Tek gear, a bit less so on HP, and > much less again on say a Philips or other brand. You might bet better > band-per-buck with a lesser brand. > > Dave. > You just have to be willing to be patient. I got a beautiful TDS744 for $850 including shipping earlier this year. Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal ElectroOptical Innovations 55 Orchard Rd Briarcliff Manor NY 10510 845-480-2058 hobbs at electrooptical dot net http://electrooptical.net
From: Too_Many_Tools on 9 Dec 2009 20:24 On Dec 9, 5:15 pm, "Charles" <charlesschu...(a)comcast.net> wrote: > "Too_Many_Tools" <too_many_to...(a)yahoo.com> wrote in message > > news:130b987d-94c8-43d0-b9be-a41aba1883e0(a)g4g2000pri.googlegroups.com... > > > Looking for suggestions for a good used oscilloscope. > > > Also looking for opinions as to how viable Ebay is today for a source > > of good used oscilloscopes. > > Ebay is hit and miss. You plunks down your money and you takes your > chances. Electronic purchases on Ebay rate lower in customer satisfaction > ... no surprise there. However, a scope is in a different category and you > might investigate/communicate with the seller and come out OK. > > I have been out of ham radio for years now but recall the flea markets at > the bigger hamfests with many good buys on scopes. You get to look at them > and ask questions and threaten to kill the seller if they cheat you. Any > such activities in your area? Reminds me of the biker rallies and gun shows I frequent. Unfortunately no used oscilloscopes there. ;<) TMT
From: Too_Many_Tools on 9 Dec 2009 20:26
On Dec 9, 6:47 pm, Jim Yanik <jya...(a)abuse.gov> wrote: > D from BC <myrealaddr...(a)comic.com> wrote innews:ep40i5dc83n505lmrpigtigjdvh5ede718(a)4ax.com: > > > > > > > On Wed, 9 Dec 2009 12:34:05 -0800 (PST), Too_Many_Tools > ><too_many_to...(a)yahoo.com> wrote: > > >>Looking for suggestions for a good used oscilloscope. > > >>Also looking for opinions as to how viable Ebay is today for a source > >>of good used oscilloscopes. > > >>Thanks > > >>TMT > > > I've bought 2 scopes off Ebay.. > > So far positive view and feeling lucky. > > > Your bids might be competing with power resellers who flip for profit. > > Check Craigslist first then Ebay.. > > WRT TEK scopes; > > #1.Check TEK's Long Term Product Support(LTPS) list first; > you may find your prospective purchase is out of support and no parts > available. > > #2. TDS series scopes did not have manuals containing component level > schematics,and were supported by module exchange or "repair and return",and > NOT an option for out-of-support instruments.TEK -scraps- the modules once > the LTPS period is past. > > #3. any parts marked 155-xxxx-xx are TEK-made ICs and no longer made,no > longer stocked,and no substitutes.TEK no longer makes 234-xxxx-xx and 165- > xxxx-xx hybrids either.Those production lines were sold off and long gone.. > your only source is "parts scopes". > > -- > Jim Yanik > jyanik > at > localnet > dot com- Hide quoted text - > > - Show quoted text - You make some good points. So for used Tek scopes, what model lines are yet supported that one can buy used? TMT |