Rectify 500MHz Small Signal
in [Design]
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From: Nico Coesel on 2 Oct 2009 13:48 Phil Hobbs <pcdhSpamMeSenseless(a)electrooptical.net> wrote: >Nico Coesel wrote: >> Phil Hobbs <pcdhSpamMeSenseless(a)electrooptical.net> wrote: >> >>> Tek 11802 Sampling Scope >>> SD-22 12.5 GHz dual low noise head >>> SD-24 20 GHz dual TDR head >>> SD-42 6.4 GHz OE converter $ 200 >>> SD-14 dual-channel probe sampler 3 GHz $ 175 ( 16) >>> (One channel mildly broken) >> >> That seems very reasonable especially since the Dollar is so low. >> Shipping costs to Europe are still huge though. >> > >;0 Those are just the prices for the plugins. Okay, that figures. Prices on Ebay are a bit higher. -- Failure does not prove something is impossible, failure simply indicates you are not using the right tools... "If it doesn't fit, use a bigger hammer!" --------------------------------------------------------------
From: Nico Coesel on 2 Oct 2009 13:50 Joerg <invalid(a)invalid.invalid> wrote: >Nico Coesel wrote: >> Joerg <invalid(a)invalid.invalid> wrote: >> >>> JosephKK wrote: >>>> On Tue, 29 Sep 2009 20:00:49 -0700, John Larkin >>>> <jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote: >>>> >>>> 20 years away from the lab and i don't remember what is good stuff any >>>> more. The stuff must be functional, but 20+ year old stuff is quite >>>> acceptable. For computer interactivity i expect to buy/use USB to >>>> GPIB converter(s). Serial is acceptable as well. >>>> >>>> My proper email address is in the headers. I have an objection to >>>> dealing with e-prey or preypal myself. >>> >>> Unfortunately EBay has monopolized the market for 2nd hand, they are >>> almost like Walmart. So they call the shots, and thus also the fee levels. >>> >>> The 2465 is a very good choice, this is the scope I always recommend to >>> clients whom I feel are in dire need of a "real" scope. Can't go wrong. >>> But remember that those things can be very tired. >> >> I bet the Lecroy LH314H (rebranded Iwatsu SS-7847A) is just as good as >> the 2465 and more recent. Sometimes they come quite cheap on Ebay. >> > >Got a link? Search engine didn't find it. So far I was less than >impressed with LeCroy scopes but maybe they've got a gem somewhere. The >epitome of ghastliness are Windows-based scopes ... yuck. The is an all analog scope (at least the measurement part) and its not made by Lecroy. Its the first one on this page: http://www.iti.iwatsu.co.jp/en/products/ss/ss_top_e.html -- Failure does not prove something is impossible, failure simply indicates you are not using the right tools... "If it doesn't fit, use a bigger hammer!" --------------------------------------------------------------
From: Joerg on 2 Oct 2009 14:51 Nico Coesel wrote: > Joerg <invalid(a)invalid.invalid> wrote: > >> Nico Coesel wrote: >>> Joerg <invalid(a)invalid.invalid> wrote: >>> >>>> JosephKK wrote: >>>>> On Tue, 29 Sep 2009 20:00:49 -0700, John Larkin >>>>> <jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote: >>>>> >>>>> 20 years away from the lab and i don't remember what is good stuff any >>>>> more. The stuff must be functional, but 20+ year old stuff is quite >>>>> acceptable. For computer interactivity i expect to buy/use USB to >>>>> GPIB converter(s). Serial is acceptable as well. >>>>> >>>>> My proper email address is in the headers. I have an objection to >>>>> dealing with e-prey or preypal myself. >>>> Unfortunately EBay has monopolized the market for 2nd hand, they are >>>> almost like Walmart. So they call the shots, and thus also the fee levels. >>>> >>>> The 2465 is a very good choice, this is the scope I always recommend to >>>> clients whom I feel are in dire need of a "real" scope. Can't go wrong. >>>> But remember that those things can be very tired. >>> I bet the Lecroy LH314H (rebranded Iwatsu SS-7847A) is just as good as >>> the 2465 and more recent. Sometimes they come quite cheap on Ebay. >>> >> Got a link? Search engine didn't find it. So far I was less than >> impressed with LeCroy scopes but maybe they've got a gem somewhere. The >> epitome of ghastliness are Windows-based scopes ... yuck. > > The is an all analog scope (at least the measurement part) and its not > made by Lecroy. Its the first one on this page: > > http://www.iti.iwatsu.co.jp/en/products/ss/ss_top_e.html > Ok, but that ain't LeCroy. Thanks for the link though, have bookmarked it because there will come a point where I am still recommending Tek 2465 scopes to clients but the supply will have shriveled up. They (unfortunatly) don't make'em like they used to. -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
From: JosephKK on 5 Oct 2009 00:57 On Fri, 02 Oct 2009 11:51:54 -0700, Joerg <invalid(a)invalid.invalid> wrote: >Nico Coesel wrote: >> Joerg <invalid(a)invalid.invalid> wrote: >> >>> Nico Coesel wrote: >>>> Joerg <invalid(a)invalid.invalid> wrote: >>>> >>>>> JosephKK wrote: >>>>>> On Tue, 29 Sep 2009 20:00:49 -0700, John Larkin >>>>>> <jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote: >>>>>> >>>>>> 20 years away from the lab and i don't remember what is good stuff any >>>>>> more. The stuff must be functional, but 20+ year old stuff is quite >>>>>> acceptable. For computer interactivity i expect to buy/use USB to >>>>>> GPIB converter(s). Serial is acceptable as well. >>>>>> >>>>>> My proper email address is in the headers. I have an objection to >>>>>> dealing with e-prey or preypal myself. >>>>> Unfortunately EBay has monopolized the market for 2nd hand, they are >>>>> almost like Walmart. So they call the shots, and thus also the fee levels. >>>>> >>>>> The 2465 is a very good choice, this is the scope I always recommend to >>>>> clients whom I feel are in dire need of a "real" scope. Can't go wrong. >>>>> But remember that those things can be very tired. >>>> I bet the Lecroy LH314H (rebranded Iwatsu SS-7847A) is just as good as >>>> the 2465 and more recent. Sometimes they come quite cheap on Ebay. >>>> >>> Got a link? Search engine didn't find it. So far I was less than >>> impressed with LeCroy scopes but maybe they've got a gem somewhere. The >>> epitome of ghastliness are Windows-based scopes ... yuck. >> >> The is an all analog scope (at least the measurement part) and its not >> made by Lecroy. Its the first one on this page: >> >> http://www.iti.iwatsu.co.jp/en/products/ss/ss_top_e.html >> > >Ok, but that ain't LeCroy. Thanks for the link though, have bookmarked >it because there will come a point where I am still recommending Tek >2465 scopes to clients but the supply will have shriveled up. They >(unfortunatly) don't make'em like they used to. About us$ 8000 new, probes extra it seems. Nor have i ever heard any reason to seriously doubt Iwatsu spec's. 8-)
From: Michael A. Terrell on 5 Oct 2009 11:32
John Larkin wrote: > > > Too much cheap surplus stuff on ebay, too. I'd love to do a cheapish > USB TDR, but there's probably no good market. Target the CATV and telephone installer markets. Something they can use with a laptop should sell What would be nice is a four channel TDR to test ethernet cabling. That would show proper wiring pattern and cable condition. Four differential outputs to test the twisted pairs, and a 4*2 input mux to select each pair in turn. The ability to drive each pair separately would allow testing for crosstalk, as well. The ability to save or print the data on an installation would make it a lot easier to troubleshoot, later on. -- You can't have a sense of humor, if you have no sense! |