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USRP B210 10 MHz Reference Input - Minimum Power

KP
Kazakoff, Peter (ASC/CSA)
Tue, Aug 12, 2025 8:27 PM

NON CLASSIFIÉ / UNCLASSIFIED

I am putting together a parts list for a test station, and I am currently planning the reference clock distribution scheme. What is the minimum power for the B210 10 MHz reference clock input? The knowledge base indicates +15 dBm maximum, but provides no minimum: https://files.ettus.com/manual/page_usrp_b200.html

I was planning on distributing a 0 dBm sinusoidal 10 MHz reference clock to all the test equipment. Any problems with this approach with a B210?

-Peter

NON CLASSIFIÉ / UNCLASSIFIED I am putting together a parts list for a test station, and I am currently planning the reference clock distribution scheme. What is the minimum power for the B210 10 MHz reference clock input? The knowledge base indicates +15 dBm maximum, but provides no minimum: https://files.ettus.com/manual/page_usrp_b200.html I was planning on distributing a 0 dBm sinusoidal 10 MHz reference clock to all the test equipment. Any problems with this approach with a B210? -Peter
MD
Marcus D. Leech
Tue, Aug 12, 2025 9:08 PM

On 2025-08-12 16:27, Kazakoff, Peter (ASC/CSA) wrote:

NON CLASSIFIÉ / UNCLASSIFIED

I am putting together a parts list for a test station, and I am currently planning the reference clock distribution scheme. What is the minimum power for the B210 10 MHz reference clock input? The knowledge base indicates +15 dBm maximum, but provides no minimum: https://files.ettus.com/manual/page_usrp_b200.html

I was planning on distributing a 0 dBm sinusoidal 10 MHz reference clock to all the test equipment. Any problems with this approach with a B210?

-Peter


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The data sheet for the PLL that is driven by the REF clock input says
-5dBm minimum.   My guess is that if your distributor is able to deliver
0dBm on all ports, it should be fine.

On 2025-08-12 16:27, Kazakoff, Peter (ASC/CSA) wrote: > NON CLASSIFIÉ / UNCLASSIFIED > > I am putting together a parts list for a test station, and I am currently planning the reference clock distribution scheme. What is the minimum power for the B210 10 MHz reference clock input? The knowledge base indicates +15 dBm maximum, but provides no minimum: https://files.ettus.com/manual/page_usrp_b200.html > > I was planning on distributing a 0 dBm sinusoidal 10 MHz reference clock to all the test equipment. Any problems with this approach with a B210? > > -Peter > _______________________________________________ > USRP-users mailing list -- usrp-users@lists.ettus.com > To unsubscribe send an email to usrp-users-leave@lists.ettus.com The data sheet for the PLL that is driven by the REF clock input says -5dBm minimum.   My guess is that if your distributor is able to deliver 0dBm on all ports, it should be fine.