Products > Test Equipment

Rohde & Schwarz CMU200

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Sas:

--- Quote from: Alfons on December 21, 2019, 02:15:22 pm ---https://de.aliexpress.com/item/4000433902250.html?spm=a2g0s.9042311.0.0.672a4c4dukbieC

--- End quote ---

Wow 499 pieces! It's madness  :wtf:. Is the choice which item will ship?
Pay attention to this auction for example https://www.ebay.com/itm/123957032489. One of these two B2 / B12 is damaged, the diode or resistor on the pcb is missing. This element is probably responsible for temperature measurement. It is easy to tear off during assembly and disassembly, as it is on the housing line when inserting and removing the ocxo. The fixing plate at the pins will also be useful.

Alfons:
I often order things in China, mostly small things, but sometimes things that are a little more expensive. I've never had trouble. Defects are very rare and if you do, you can get your money back. I think buying is not a risk. Where did the dealer get 500 of them from? Perhaps R&S has already had production in China and are these remaining stocks? Fakes would not be worth it. I will see... Also: one bad rating and the dealer no longer sells more of this B12.

Sas:
Perhaps these are unused or removed parts that were sent for recycling to China and went on sale again at a lower price. Write as you receive and it will work.

Qw3rtzuiop:
These parts are probably from CMU200 that were used in china. A lot of CMU200 are used for cell phone prodution. Just take a look at CMU200 listings on Taobao.

Alfons:
For 14 € I bought a cable on Ebay, which is equipped with Suhner plugs. Cable is F&G 213/U. Probably comes from military stocks, but in very good condition. With screw caps :D
I wanted to see, if anything actually happened in the frequency plot, connect with this cables. Yes, the frequency response is actually significantly better, now lies within -1.2dBm at -20dBm. That looks better.



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