Oscilloscope - Page 1
Forum section: electronics / general

author: biabeniamin
author_rank: Newbie
timestamp: December 18, 2016, 11:02:18 am
content: Hi,i'm 19 years old, i study computer science at university from Cluj,Romania.I won a national c# programming competition in Romania and few electronics and automations competitions. The problem is that I would need an oscilloscope but it is very expensive for me or for my parents. The cost of a new one is my money for 5-6 months so I cannot afford it.. I was wondering if someone has an old one,even analog one and doesn't used anymore and want to donate it.Is someone who would do this?

author: mk_
author_rank: Regular Contributor
timestamp: December 18, 2016, 04:54:08 pm
content: Quote from: biabeniamin on December 18, 2016, 11:02:18 amAre you willing to repair an older HM605? It`s working... but some kind of nonlinar distortion in the horizontal defliction is visible.regardsmichael

author: ProBang2
author_rank: Frequent Contributor
timestamp: December 18, 2016, 07:56:57 pm
content: If you are willing to repair, then this might be useful:Manual HM605 (german) + Schematics and adjustment instructions (german/english)Manual HM605 (english)

author: biabeniamin
author_rank: Newbie
timestamp: December 19, 2016, 05:48:06 am
content: Yes Michael, at least i will try to fix it. Thank you so much. Can you ship it to me?i will pay the shipping cost.

author: tggzzz
author_rank: Super Contributor
timestamp: December 19, 2016, 11:31:49 am
content: Quote from: mk_ on December 18, 2016, 04:54:08 pmDoes the CRT have a post-deflection mesh? If that is damaged, the CRT would be junk.Personally I wouldn't regard a scope as being a good thing for abeginnerto repair.

author: biabeniamin
author_rank: Newbie
timestamp: December 19, 2016, 11:40:50 am
content: Anyway is better than nothing,don't you think?

author: tggzzz
author_rank: Super Contributor
timestamp: December 19, 2016, 04:17:03 pm
content: Quote from: biabeniamin on December 19, 2016, 11:40:50 amWithin limits, anythingworkingis better than nothing.Example of being outside a limit: using a 100kHz bandwidth scope to look at a typical digital signal on a PCB.

author: picandmix
author_rank: Frequent Contributor
timestamp: December 19, 2016, 05:40:02 pm
content: Though a kind offer by Michael have to agree with Tggzz.Also have an old Hameg but they are big and heavy beasts and at 25 -30 years old all the parts becoming fragile; I certainly would not want to attempt to repair it without any knowledge of how to do so.Do look at the carriage costs for such an item, it might be a cheaper to buy a Hantek 6022BE USB scope, lot of info in the forum about that, a 'beginners' device , but still very handy.

author: Gyro
author_rank: Super Contributor
timestamp: December 19, 2016, 07:50:29 pm
content: You might do well to keep an eye on this current thread (or at least weigh it against shipping cost for Michael's kind offer.https://www.eevblog.com/forum/beginners/best-oscilloscope-under-$100-cad/Edit: link corrected.

author: Dachpappe
author_rank: Contributor
timestamp: December 19, 2016, 10:13:21 pm
content: Quote from: tggzzz on December 19, 2016, 11:31:49 amActually my first scope (an Eo 174 A from former GDR) was my first bigger project in repairing equipment. With a good multimeter, the service manual and some attention on what not to touch a scope is a very interesting project to learn about how analog electronics work. Also older Hamegs tend to blow their caps which can be easily replaced.

author: guenthert
author_rank: Frequent Contributor
timestamp: December 20, 2016, 06:08:37 am
content: Hmmh, I'd ask around locally (shipping costs are prohibitive for this kind of equipment). I found some good deals on local craigslist, but that's probably not going to apply in your situation. Isn't there a local ham radio club? Those folks might have a spare CRO. Analogue 'scopes under 100MHz (good enough for anything on solder-less bread board) go for a song, should be even within your budget.30+yo equipment might just still work (at least I got pretty lucky), some cleaning might be required, but I'd stay away from things which actually need repair (*I* have access to a shop which actually carries 30yo parts, including long obsolete stuff, but you might not), particularly in the high voltage area.

author: tggzzz
author_rank: Super Contributor
timestamp: December 20, 2016, 10:13:45 am
content: Quote from: Dachpappe on December 19, 2016, 10:13:21 pmWere you a beginner and/or with the OP's background? If you spent several years doing electronics and computing without a scope (as I did), then I wouldn't class you as a beginner.

author: Giovanni
author_rank: Newbie
timestamp: December 20, 2016, 10:20:45 am
content: What about a Philips PM3206? 15MHz 2 channel analog oscilloscope. It works fine. However sometimes when turning the nobs it doesn't react, but the second time it does. So I think there is some dust inside the contacts and you should clean it up. It is a perfect scope for starters. It was my first scope.The scope isn't used properly for years, so if you are interested I will first let it run for a few hours to make sure it works fine and no caps will pop bacause of not using it.Also, it is a very lightweight scope, because back then it was a portable scope. (It still is of course, but not to current standards.)Send me a message if you are interested.Giovanni

author: biabeniamin
author_rank: Newbie
timestamp: December 20, 2016, 01:51:09 pm
content: thank you for your answers. I was working with electronics for few years so I think I could do some repairments .But I think you are right,shipping costs are too big to send such a big oscilloscope.I think I will wait until I have enough money to buy one.

author: TopLoser
author_rank: Unknown
timestamp: December 22, 2016, 08:07:38 pm
content: I've got a few new boxed Tenma 20MHz 2 channel scopes lying around. Were returned because the probes were faulty but you can have one with a new set of probes for the cost of shipping.PM me with a shipping address and I'll send it UPS.

author: picandmix
author_rank: Frequent Contributor
timestamp: December 22, 2016, 09:37:07 pm
content: Quote from: TopLoser on December 22, 2016, 08:07:38 pmSanta Cluase has arrived with his UPS sleigh;D

author: biabeniamin
author_rank: Newbie
timestamp: December 25, 2016, 02:13:14 pm
content: Yep,best santa claus:))thank you very much

author: Isad
author_rank: Frequent Contributor
timestamp: December 25, 2016, 08:38:39 pm
content: Quote from: TopLoser on December 22, 2016, 08:07:38 pmDammm Santa arrived in this placeVery nice of you IanHow much i would like to give my Hammeg HM204 away but shipping just costa small fortune hereHappy Holidays evryone