Does anyone know these scopes? And are they any good?
Voltcraft 2040 dual trace 20MHz oscilloscoop
-Coupling: DC - AC - GND
-Vertical: 5mV/div -5V/div
-CH1 , CH2, ALT, CHOP, ADD, INV
-Hold Off
-Time/div : 1µs - 2s
-Trigger select: 1, 2, 1/2, EXT
-Triggercoupling: AC, DC, LF, HF
-Triggerlevel adjestment
-Time delay
-Component test
-Beam find
Don't know the age of the thing...
Marc
Voltcraft 2040 dual trace 20MHz oscilloscoop
-Coupling: DC - AC - GND
-Vertical: 5mV/div -5V/div
-CH1 , CH2, ALT, CHOP, ADD, INV
-Hold Off
-Time/div : 1µs - 2s
-Trigger select: 1, 2, 1/2, EXT
-Triggercoupling: AC, DC, LF, HF
-Triggerlevel adjestment
-Time delay
-Component test
-Beam find
Don't know the age of the thing...
Marc
Figures don't tell the whole story...
It's a strange thing, but oscilloscopes are personal things. The reason that many people like Teks is that the triggering has (traditionally) been better. But its difficult to put a number to good triggering. Similarly, some CRTs give a clearer trace than others.
At the 20MHz level (very basic), there probably isn't much between one oscilloscope and another. I would guess that this Voltcraft oscilloscope is fairly recent because of the inclusion of holdoff and delay, but component testing is a gimmick.
Unless you absolutely need the facilities of a new oscilloscope, second-hand oscilloscopes are much better value.
It's a strange thing, but oscilloscopes are personal things. The reason that many people like Teks is that the triggering has (traditionally) been better. But its difficult to put a number to good triggering. Similarly, some CRTs give a clearer trace than others.
At the 20MHz level (very basic), there probably isn't much between one oscilloscope and another. I would guess that this Voltcraft oscilloscope is fairly recent because of the inclusion of holdoff and delay, but component testing is a gimmick.
Unless you absolutely need the facilities of a new oscilloscope, second-hand oscilloscopes are much better value.
Salut Bricolo
Are you looking for a service manual, or an operators manual? This guy sells a scanned service manual for about $24: http://www.aa4df.com. I have never dealt with him, but it's not much of a risk.
I also have some experience with the 2232, and it's predecessor the 2230. Let me know if you have a specific question about using it. I might be able to help. If I haven't fried too many braincells in the meantime.
Cheers, BC
Are you looking for a service manual, or an operators manual? This guy sells a scanned service manual for about $24: http://www.aa4df.com. I have never dealt with him, but it's not much of a risk.
I also have some experience with the 2232, and it's predecessor the 2230. Let me know if you have a specific question about using it. I might be able to help. If I haven't fried too many braincells in the meantime.
Cheers, BC
Re: Salut Bricolo
I'm looking for the operator's manual.
The questions I have for now are
-what is the "select waveform" button?
-why, when I use both timebases in store mode, don't I see the selected part of the curve in the second timebase? (I see another part of the graph)
-can I connect it to a computer to get data?
BC108man said:Are you looking for a service manual, or an operators manual? This guy sells a scanned service manual for about $24: http://www.aa4df.com. I have never dealt with him, but it's not much of a risk.
I also have some experience with the 2232, and it's predecessor the 2230. Let me know if you have a specific question about using it. I might be able to help. If I haven't fried too many braincells in the meantime.
I'm looking for the operator's manual.
The questions I have for now are
-what is the "select waveform" button?
-why, when I use both timebases in store mode, don't I see the selected part of the curve in the second timebase? (I see another part of the graph)
-can I connect it to a computer to get data?
I found that for the basics of audio a used B&K from e-bay for about $75 filled the bill. Any oscillation problems that a DMM can't detect show up and I can see any nasties when clipping. There are other things that might be nice but these have been the important on's for me. If I had the cash to be shopping in the $500 range, I would consider a Pico-Tech or Velleman unit that uses the PC monitor for a display but uses an external module so you are not limited to the resolution of a sound card. Both come with FFT soft ware which is a big plus.
Don't waist you time with pc scope. you loose all of the portabillity and won't have the resolution. A nice Tec 465 can be had on Ebay for $300. I went a little cheaper and got a B&K for $60 (only 20mhz) Works great and came with owner and service manual.
Lots of people talk about 7XXX tecs, but I would thing about size and weight if you don't have a permanent audio workbench like me.
Lots of people talk about 7XXX tecs, but I would thing about size and weight if you don't have a permanent audio workbench like me.
A B&K for about $60-70 is what I've actually got. In terms of benefit/$ it's about the best piece of gear I've got. I had an "oscillation situation"ot long ago that I would not have been aware of (until smoke appeared!) with the limited bandwidth of a PC scope. I was thinking more of augumenting it with affordable FFT capability even of limited to the audio band plus a little more.
For that use, one might be nice to have. Expecially if you also have some toher real time soundcard based speaker testing software on a machine dedicated to stereo stuff. If your talking about miked speaker test (or whole system test) a full duplex sound card can test speakers while ignoring room interaction. And it makes a decent function generator too.
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