Author Topic: NOD - New Oscilloscope Day  (Read 794 times)

m-Kresol

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NOD - New Oscilloscope Day
« on: November 02, 2018, 08:13:46 AM »
So this landed today, going to have a lot of fun:



Got a good deal for it. Unused, original packaging for almost 50% off second hand. the guy who bought it, did not use it after all. Capable of up to 50 MHz (way too much for what we do), 2 channels, can add/substract and so forth, FFT and some other bits and bobs I will hardly use.

The image is a "sine" wave btw. from the output of a XR 2206 function generator chip when underpowered (input voltage to the chip around 6V. should be around 10V)
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drog_trog

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Re: NOD - New Oscilloscope Day
« Reply #1 on: November 02, 2018, 08:32:58 AM »
cool. you've just reminded me I must fix mine.

stringsthings

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Re: NOD - New Oscilloscope Day
« Reply #2 on: November 02, 2018, 08:41:26 AM »
Nice find!  Tektronix has a stellar rep!
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pickdropper

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Re: NOD - New Oscilloscope Day
« Reply #3 on: November 02, 2018, 08:47:31 AM »
Thatís a really nice scope.  You should have fun with it.

I have a Chinese scope and Iím thinking of ditching it for something like this.  These Teks are a good balance of form factor and capability.
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nzCdog

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Re: NOD - New Oscilloscope Day
« Reply #4 on: November 02, 2018, 11:17:20 AM »
Hot! I remember when I bought my Tenma 50Mhz scope from Farnell,  an old Technician mate of mine was visibily disappointed when he found out, and asked why I didn't get a Tektronix... Lol!

Well you got a Tektronix, Felix!  Wool! ;D

alanp

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Re: NOD - New Oscilloscope Day
« Reply #5 on: November 02, 2018, 11:42:23 AM »
Score!
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Bio77

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Re: NOD - New Oscilloscope Day
« Reply #6 on: November 02, 2018, 02:54:27 PM »
That's killer!  I have an old analog Tektronix and it works great. 

Incidentally, I haven't had much luck with either the cheap function generators on Amazon or the XR 2206 I built.  I'm using an app on my phone called Audio Function Generator PRO, think it was < 3 bucks.  I made a headphone jack to 1/4 inch patch cable using one of the many broken head phones at my house (damn kids!).


cooder

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Re: NOD - New Oscilloscope Day
« Reply #7 on: November 02, 2018, 05:27:22 PM »
Very nice one there! Great score! I wouldn't mind one myself to complement my old school analog scope...

On a side note: any recommendations for a reliable XR 2206 source? I had ordered two from different sellers on ebay, one was good the other a dud. Problem is I don't remember which seller was the dud one as they came both at the same time. I tested them with my cheapie function generator based on XR 2206 chip into old school analog scope.
As I need a few more XR2206 seller recommendations would be much appreciated!
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m-Kresol

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Re: NOD - New Oscilloscope Day
« Reply #8 on: November 03, 2018, 04:23:51 AM »
i ordered some from job-electronik.de. all of them were fakes and I got my money back. I bought 2 from Reichelt now and those are good. but 5Ä/piece is quite a lot for an IC. I'm also interested in a reliable source.
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stringsthings

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Re: NOD - New Oscilloscope Day
« Reply #9 on: November 03, 2018, 05:24:44 PM »

That's killer!  I have an old analog Tektronix and it works great. 


I am sooooooooooooooooo jealous!~    8)
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cooder

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Re: NOD - New Oscilloscope Day
« Reply #10 on: November 03, 2018, 06:54:24 PM »
i ordered some from job-electronik.de. all of them were fakes and I got my money back. I bought 2 from Reichelt now and those are good. but 5Ä/piece is quite a lot for an IC. I'm also interested in a reliable source.
Well I will let you know if I find a source, just contacted another ebay seller who also sells the function generators based on that chip, so will see if they can assure me that they work.
Also I had one from Tayda that worked, but they have the chip currently not in stock (for awhile now), probably also the problem of sourcing genuine stuff. Or just general slackness restocking as they are out of a bunch of things I'm looking for...
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EBRAddict

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Re: NOD - New Oscilloscope Day
« Reply #11 on: November 03, 2018, 07:18:34 PM »
Nice score. If I could I would have all my bench equipment made by Tektronix and Keysight/HP... if money were no object.

reddesert

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Re: NOD - New Oscilloscope Day
« Reply #12 on: November 04, 2018, 12:51:21 AM »
I bought a few ICL8038 function generator chips on ebay and they work. I have even made a synth VCO with one. It's not a direct replacement for the XR 2206 but you can find function gen circults that use the ICL8038.

I was leery of buying these as it broke my rule of "don't buy formerly out of production parts on ebay," but there are some current production ICL8038 generator kits on import from Asia, so I thought they might not be duds, and they're not. I'm not sure if they would meet every spec of the originals, but for an audio application they seem to work.

stringsthings

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Re: NOD - New Oscilloscope Day
« Reply #13 on: November 04, 2018, 10:54:27 AM »
I bought a few ICL8038 function generator chips on ebay and they work. I have even made a synth VCO with one. It's not a direct replacement for the XR 2206 but you can find function gen circults that use the ICL8038.

I was leery of buying these as it broke my rule of "don't buy formerly out of production parts on ebay," but there are some current production ICL8038 generator kits on import from Asia, so I thought they might not be duds, and they're not. I'm not sure if they would meet every spec of the originals, but for an audio application they seem to work.

Nice.
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stecykmi

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Re: NOD - New Oscilloscope Day
« Reply #14 on: November 10, 2018, 09:51:31 AM »
nice scope, i'm pretty sure i used that model or similar in university. fft mode can be really interesting! try looking at a signal before and after a distortion to see all the additional harmonics that are added.