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Old 18th November 2008, 10:25 PM   #1
joetama is offline joetama  United States
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Default New Oscilloscope?

I'm looking for a new oscilloscope. Mine is an ancient Tektronix Type 422 and the trace is getting super weak. It is to the point where I have to turn off all the lights in the room to use it. It's also showing some distortion on the faster trace speeds. I got it about 10 years ago for $10. So its had a good life before me and with me.

Anyway, I'm looking for something to replace it. I was looking at buying a new Tektronix TDS1001B since they are only $900. But, I really don't want to spend that much money.

Are there any good used O-Scopes (preferably newer) that are in the $300- $500 range?

Thanks
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Old 18th November 2008, 10:58 PM   #2
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For audio a cheapy like this will do,
but the switches get dirty (and seem
uncleanable) after ~5 years.
http://www.tequipment.net/EZDigitalOS5020.asp
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Old 18th November 2008, 11:12 PM   #3
joetama is offline joetama  United States
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How does this unit compare?

http://www.tequipment.net/InstekGOS620.html
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Old 18th November 2008, 11:48 PM   #4
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Looks about the same.
I've had Hitachi and now LG
and they are very similar.
There are several scopes at
~ that price point and specs.
Maybe there is a scope forum
somewheres ?
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Old 19th November 2008, 12:41 AM   #5
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I've thought about for Mr. Nextscope
trying a dedicated WIN98 PC with
simply an AD adaptor to the parallel
port.
Or just research for an allready made version
(of the adaptor and software)
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Old 19th November 2008, 01:42 AM   #6
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You can buy a brand new (most came from military storage) in the box 4 trace Tektronix 2246 on eBay right now for $485.00, $400.00 without probes.
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Old 6th October 2009, 03:22 AM   #7
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In your tektronix there should be a beam cutoff or sub-brightness pot or similar on one of the boards. With the brightness set to mid way turn this pot until the trrace gets bright enough to use again. Just about every pro scope I've ever worked on has this adjustment. It may be labeled something else and there's also a good chance you can download the manual for free of you google it on the internet.
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Old 6th October 2009, 05:25 AM   #8
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You might want to check this out, http://cgi.ebay.com/OWON-EDU5022-Dig...d=p3286.c0.m14

I'm not the seller but I think it's a pretty good deal.
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Old 6th October 2009, 07:41 AM   #9
slam is offline slam  United States
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Since you are coming from the analog scope world you might want to play with a digital scope before commit to it. Digital scope is very convenient in may ways but the budget ones do not show the z-axis. Also the aliasing will take effort to get use to.

For a DSO for your budget, I would vote for Rigol DS 1052E. Rigol tends to have better reputation on quality for the low end DSO market.
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Old 6th October 2009, 08:49 AM   #10
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The manual is available through the "Boat Anchor Manual Archive".

Through Mark's suggestion you might be able to squeeze some more years out of it and use it as a secondary scope to supplement the new one. You can get new CRTs from some surplus places and from Ebay.

Judging by the units you've shown interest in, you could probably get by with an old Tek 465B if you can find one. They have a very good reputation. (it will probably outperform those 300-500$ ones you've linked to). Downside is that, being so old, it may need service immediately or soon after purchase.

- keantoken
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