EEVblog Electronics Community Forum
General => General Technical Chat => Topic started by: TImusan on November 07, 2016, 10:39:21 am
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Hi all!
My apologies if this is in the wrong part of the forum, just wanted to say hi to the community, long time lurker but finally decided to subscribe and put out a message. I'm a Belgian freelance programmer currently living in Okinawa (Japan). Studied electronics engineering and general electrics a long time ago and left it for dead as I headed into the computer realm ... but recently decided to pick up the old hobby (although I most certainly consider myself a beginner again :) ) Thus slowly getting equipped with some decent lab material. This means much scouting on Yahoo Auction (Ebay is nearly non-existent here) ... some material I think you should really get new (soldering iron, ...) but I could not resist the temptation to see if I could find a 50$ scope (just for kicks).
And sure enough ... I could score an ancient Yokogawa DL3120B for just under that price :-D Besides a very very faint screen burn the thing is fully operational. I also did not know (care) anything about its specs, I just remembered Yokogawa being quite a good brand and who can resist an orange monochrome screen? As far as I could find (Yokogawa does not like to give out manuals on discontinued products so it appears) this is a 10 Mhz scope with a 25MS/s / 12bit sampling rate. From what I can find in the menus on the scope itself it is quite elaborate on the amount of analyzer tools in there ... it even has a tiny printer installed on the top and two "memory card" slots :) But 10Mhz is of course not that much of a bandwidth.
Anyway ... I'm rambling ... my question is actually if anyone has any experience with this scope and its performance? Was this a decent scope in its day? Are there known "hacks" out there to increase its bandwidth or other?
If I decide to actually use it I think it is a good idea to recap this beast as well since this is ~20 years of ago currently.
Attached some visuals of the huge bastard >:D
Cheers,
Tim
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Since you are in "Japan" you would do better with an Iwatsu or Kenwood analog crt scope..easily 20-100mhz. Be patient. ;) Oh.. Ohaiyo gosaimas or konichiwa. ;D
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@singapol
Since you are in "Japan" you would do better with an Iwatsu or Kenwood analog crt scope
Hmm, interesting ... Iwatsu is indeed quite common around here but if I am correct it is mainly their older equipment which is worth salvaging if you can get your hands on it.
@blueskull I don't like analog scope too much
Haha, I have to agree with you there ;D Well, I like them in that they have a great nostalgic feel and these days can be very cheap to pick up even with a "high" bandwidth. I recently had my hands on an old HP 300 Mhz analog scope in a thrift store here for 8000 Yen (~$80) and it was fully operational as well but somehow did not have the heart to buy it. The Owon SDS7102 you mention looks like a neat little scope for that money. But I guess I have to see if I outgrow the Yokogawa DL3120B first 8)
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...but I could not resist the temptation to see if I could find a 50$ scope (just for kicks).
And sure enough ... I could score an ancient Yokogawa DL3120B for just under that price
Same here! I just got two of these for $40 from a local eBay seller. I'm replacing my ancient B&K analog scope. I've already torn one down for spares and they're really well-made tanks. It's nice to have proper measurement tools at last.
Both screens have some pretty awful burn-in, but I thought I might be able to dig out the video signal(s) and get them on a small LCD. The video signals are a little bonkers. ~56.5Hz vertical and 47.85kHz (~20.8uS sync interval) horizontal, which looks like a combination of two different 800x600 VGA "standards" (http://martin.hinner.info/vga/timing.html).
Hope you're enjoying yours. :)
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Here’s my BWD vintage scope with it’s kinda matching audio sig gen :)
(http://img.photobucket.com/albums/v186/ArtArt/ScreenShot2014-11-26at55937PM_zps059a1487.png)
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But for the color (and the fact that yours are clean!), it's interesting how closely the BWD knobs resemble those on old HP gear. Did they have any affiliation?
(https://photos.smugmug.com/Other/Miscellaneous/i-B5J4jXx/0/M/IMG_4620-M.jpg)
(https://photos.smugmug.com/Other/Miscellaneous/i-L6KjGJ8/0/M/IMG_4619-M.jpg)
-Pat
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Aside from the colour they do look close. They are cleaner than they appear in the pic :) The scope was in use until it’s owner left us.
BWD are (were) Australian. Apart from that, I don’t know anything about the company. I wasn’t around at the time :D
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Hi all, I know this is not directly related but I noticed that most equipment still have the GPIB connections in back. Does anyone ever use these anymore? When I use to do electronic board testing, of course we had Labview setup and we used the GPIB ports, but that was over 20 years ago. Since I use my scope for troubleshoot and design, I have no need for that type of automation.
Oh well, it sure was nice for automating tests back then.
PEACE===>T
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Hi all, I know this is not directly related but I noticed that most equipment still have the GPIB connections in back. Does anyone ever use these anymore? When I use to do electronic board testing, of course we had Labview setup and we used the GPIB ports, but that was over 20 years ago. Since I use my scope for troubleshoot and design, I have no need for that type of automation.
Oh well, it sure was nice for automating tests back then.
PEACE===>T
A physics lab I sometimes work at has a bunch of 90's era HP DSOs and network analyzers, and they use GPIB whenever they need to do something more complicated or long-term. They just don't have many computers with a GPIB card, so you have to plan ahead or be willing to wait your turn.
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You can still buy GPIB cards for modern PCs - but be prepared for sticker shock.