Just got a Tek 2245A, Fluke 7260A, and Fluke 8600A for $40!!! - Page 1
Forum section: electronics / testgear

author: MatCat
author_rank: Frequent Contributor
timestamp: January 07, 2015, 08:37:29 pm
content: A nice little bounty for $40!!! I put out a craigslist ad looking for anyone that has a scope for < $50, about 2 weeks later this lady e-mails me up saying her late husband used to be an EE and had some equipment floating around, and this is what I got! Very interesting story too, apparently her husband designed over 90% of the B-52 electronics, and she herself though not an EE is a prototype soldering tech for a local RF design company I had no idea was here.The scope sofar appears to be running absolutely perfectly, and I did a quick check on the counter by plugging in a 20MHz crystal oscillator and it came right up 19.9996 literally 20 seconds after being powered on, though I cannot find a manual for this thing anywhere, if anyone has a copy of it please let me know! I haven't fully tested the DMM yet, though I did do a quick check and it seemed to work (I don't have proper bananna lead probes for it, all the ones I have are the shielded over type).Now my desk is starting to look like a lab

author: JoeO
author_rank: Frequent Contributor
timestamp: January 07, 2015, 08:45:23 pm
content: http://w140.com/tekwiki/wiki/2245

author: KJDS
author_rank: Super Contributor
timestamp: January 07, 2015, 08:48:56 pm
content: That's an excellent score

author: MatCat
author_rank: Frequent Contributor
timestamp: January 07, 2015, 08:56:08 pm
content: Quote from: JoeO on January 07, 2015, 08:45:23 pmThank you for that link, a nice little source for sure, though I do have a mint condition operators manual that came with itWhat I really need to find is the 7260A manual.

author: devanno
author_rank: Regular Contributor
timestamp: January 07, 2015, 09:09:15 pm
content: Try this guy on eBay for Tektronix manualshttp://www.ebay.com/itm/Ultimate-Tektronix-Repair-Service-Owner-Manuals-Schematics-Manual-s-on-DVD-/121261806996?pt=BI_Books_Manuals&hash=item1c3bc45594He says he'll help you find any Tektronix manual if it's not already on his DVD.

author: MatCat
author_rank: Frequent Contributor
timestamp: January 07, 2015, 09:11:44 pm
content: Quote from: devanno on January 07, 2015, 09:09:15 pmThe 7260A is a fluke! But thanks.

author: RedOctobyr
author_rank: Contributor
timestamp: January 07, 2015, 09:20:35 pm
content: Wow, that's awesome, congratulations!Sent using Tapatalk.

author: Vgkid
author_rank: Super Contributor
timestamp: January 07, 2015, 10:00:17 pm
content: The fluke 7261a manual is on BAMA.edibris. there is a chance they might be similiar.

author: rob77
author_rank: Super Contributor
timestamp: January 07, 2015, 10:07:14 pm
content: a bit ancient gear, but a nice one$40 is a reasonable price especially when talking about gear in unknown condition

author: MatCat
author_rank: Frequent Contributor
timestamp: January 07, 2015, 11:52:03 pm
content: Quote from: Vgkid on January 07, 2015, 10:00:17 pmLooking at a pic of the 7261a and the 7260A infront of me, the only different I see is a little 3 pin plug on mine right between Chan A and B marked ACC Power that isn't on the 7261a

author: MatCat
author_rank: Frequent Contributor
timestamp: January 07, 2015, 11:53:47 pm
content: Quote from: rob77 on January 07, 2015, 10:07:14 pmI had a good feeling about it, the lady I got it from said it has been in climate controlled storage at the lab she works at the entire time it wasn't being used. May be ancient but 100MHz with cursors is fantastic!

author: Vgkid
author_rank: Super Contributor
timestamp: January 08, 2015, 12:36:30 am
content: Dont think badly about the 2245A, a few of us use the 1 larger, 2246.

author: Electro Fan
author_rank: Super Contributor
timestamp: January 08, 2015, 12:58:39 am
content: Quote from: MatCat on January 07, 2015, 11:53:47 pmIt is a great scope - enjoy it

author: MatCat
author_rank: Frequent Contributor
timestamp: January 08, 2015, 05:03:34 am
content: Not sure what happened to the counter, but the 10MHz reference is not working for some reason now (In check function it just reads 0, and no longer counts anything), not sure what happened!

author: TerraHertz
author_rank: Super Contributor
timestamp: January 08, 2015, 05:35:22 am
content: You didn't change something to "external reference" I suppose?

author: MatCat
author_rank: Frequent Contributor
timestamp: January 08, 2015, 05:36:47 am
content: No I checked that, It's still set to internal, and I switched it around a few times etc to make sure.

author: Fat
author_rank: Regular Contributor
timestamp: January 08, 2015, 05:48:03 am
content: Quote from: MatCat on January 07, 2015, 08:37:29 pmNice score. I hope to find one of those type of deals in the future.

author: miguelvp
author_rank: Super Contributor
timestamp: January 08, 2015, 06:20:44 am
content: Quote from: MatCat on January 07, 2015, 11:52:03 pmIn case you don't have the link to the bama site for that, here you go:http://bama.edebris.com/manuals/fluke/7261a/Edit: and if you really want to hunt for the exact 7260a maybe one of the links here will help:https://www.eevblog.com/forum/repair/repair-documents-and-links-sticky-me-please-mods/For specs differences between the 7260A and the 7261A this doc might help you (I didn't go through it in detail):http://www.teknetelectronics.com/DataSheet/FLUKE/FLUKE_7200series83614.pdf

author: MatCat
author_rank: Frequent Contributor
timestamp: January 08, 2015, 07:13:33 am
content: I did take the DMM apart today though to fix loose solder joints on the mains input, some pics.

author: devanno
author_rank: Regular Contributor
timestamp: January 08, 2015, 08:52:56 pm
content: Quote from: MatCat on January 07, 2015, 09:11:44 pmUh.. d'oh. I need more coffee. :-) But the service manuals can come in handy for your Tek stuff anyway.

author: crystal
author_rank: Contributor
timestamp: January 08, 2015, 10:00:25 pm
content: Quote from: Fat on January 08, 2015, 05:48:03 amIn my country these piles of devices would cost about 500€.

author: sorenkir
author_rank: Regular Contributor
timestamp: January 09, 2015, 10:42:04 am
content: Hi MatCat,I have just finished fixing a Fluke 7260A (2 TTL ICs were defective).I have found that the counter architecture is similar to the Fluke 7250A (same custom counter and logic chips).Pin-out of these chips and architecture is well described in the Instruction Manual:http://exodus.poly.edu/~kurt/manuals/manuals/Fluke/FLUKE%207250A%20Instruction.pdfBoard layout, however, is completely different.Michel.

author: MatCat
author_rank: Frequent Contributor
timestamp: January 09, 2015, 03:36:09 pm
content: Quote from: sorenkir on January 09, 2015, 10:42:04 amThanks, I did find a manual for the 7261A which appears to be identical accept for a little 3 pin connector mine has in the middle of Channel A and B marked ACC Power which the 7261A does not have, but regardless of that the PCB layout is even the same as in the manual. An odd thing is when I went to take the lid off it it started working again! No idea why. I left it on overnight and it is still working.

author: MatCat
author_rank: Frequent Contributor
timestamp: January 10, 2015, 10:31:01 am
content: Decided to test the bandwidth by scoping out a fast pin toggle from my xCore Startkit, also secondarily been practicing getting the best scope shots with my cell phone hehe.