Products > Test Equipment

Rohde & Schwarz CMU200

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Alfons:
I also bought a CM200 now. I only need the device for a few measurements on filters and to repair an old spectrum analyzer, otherwise I have really little to do with RF. I had looked around for alternatives, but good, functional single devices would have come much more expensive. In this case, I did not want any repair equipment, because I have no proper measuring equipment available for repairs of RF equipment. And the game with the whole China gadgets has annoyed me increasingly.

So I bought a CMU200 for 715 € (inc. Purchase), a lot of money (for a pure base unit, as I later discovered :palm:). However, the seller has assured me, that the device is faultless. Only after the purchase, I noticed that it is a 1100.0008.30, so a basic device without any hardware options. The seller had agreed to a cancellation certainly, but then let it come. So it has only the generator, the analyzer and the power meter (saves electricity costs:)).

I then found that it works well and is completely sufficient for my purposes. I could not find any errors, all self-tests are "passed", the values ​​really good. The buttons work like the first day and the display is clear and bright. I'm impressed. It is easy to operate and even if the device is not a specialist in any of the disciplines, the performance for a relatively "new" device at the price is very good in my view. OK, the right ham radio hobbyists have more knowledge and will probably prefer single units. After the repairs, I'll probably sell it again. Maybe I will keep it too. Have fun with the device.

Bicurico:
The other options, which you don't have, are completely useless, unless you want to specifically measure GSM/GPRS/Edge mobile communications.

You don't want to do these, because you should not transmit in the respective frequencies to begin with.

So be happy that you purchased a fully working CMU200. The price you paid is a great price, so no worries here, either.

The only option that might be somehow interesting (INHO) would be the Audio Measurement option. But again, you could probably do them in a more versatile way with a good PC audio card.

Check my blog for my "VMA Simple Spectrum Analyzer" software, which is available for the CMU200 & CRTU, too.

Regards,
Vitor

Alfons:
Yes, I already know your software and will try it out in the next few days. OK, so the price for the device was OK. Actually, I wanted to update with the latest software, but the device don't accepts either the card reader or the CF card. Is formatted in FAT. Although I can see the files in the file manager, the version manager does not want to read the card.

Edit: Did not know that you have to extract the files. :palm: Now the update is running ...

usagi:
as davey would put it, for the money the cmu200 is a real bobby dazzler  :-+

even barebones it is impressive. but then it should be considering they originally ran anywhere from $20k-$100k depending on options.

markus_jlrb:
@Alfons,

check out in addition the link in the german MC forum too in order
to find usefull infos concerning the CMU200.

https://www.mikrocontroller.net/forum/all?filter=CMU200*&x=0&y=0

Markus

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