Author Topic: Rohde & Schwarz CMU200 RXTX board  (Read 296 times)

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Offline szszjdb

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Rohde & Schwarz CMU200 RXTX board
« on: August 27, 2020, 03:23:21 am »
Hi Sir,
I am repairing my CMU200 which have not output on TX side. The issue is located on the RXTX board.  There have a yellow part with 4 signal port and 4 GND port confuse me.
Please refer to the atttached picture. The part is on the output signal path for band switching.
Does anyone recognize the part or its function?

Best Regards,
 

Offline szszjdb

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Re: Rohde & Schwarz CMU200 RXTX board
« Reply #1 on: August 28, 2020, 01:32:05 pm »
Hi Sir,
Is there anyone view the topic?
From the layout, it seems 2 port pass the 10Mhz-1.2G signal and the other 2 pass the 1.2-2.2g signal. It is interesting to learn about the function of it.
What kinds of filter?
Any comment would be appreciated!

Best Regards,
 

Offline DigitalDeath

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Re: Rohde & Schwarz CMU200 RXTX board
« Reply #2 on: August 28, 2020, 03:31:08 pm »
That looks like a components from the Xinger components line from Anaren. There are other brands, this is just one example.
In this case it looks more like a RC bridge to cross RF lines without doing multi-layer PCBs.

https://www.anaren.com/catalog#xinger
« Last Edit: August 28, 2020, 03:33:04 pm by DigitalDeath »
 
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Offline szszjdb

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Re: Rohde & Schwarz CMU200 RXTX board
« Reply #3 on: August 28, 2020, 06:00:17 pm »
Hi DigitalDeath,
Many thanks!
You mean it is just a RF jumper? But the main PCB is already the multi-layer type.
I am sorry that I can not open the component website due to my network issue. Could you help to attach an example PDF here?

Best Regards,
 

Offline szszjdb

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Re: Rohde & Schwarz CMU200 RXTX board
« Reply #4 on: August 29, 2020, 03:30:19 am »
Hi DigitalDeath,
Many thanks again!
It is a jumper indeed! Attached the PDF ,if someone else need it.

Best Regards,

 


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