[USRP-users] SBX LO Lock

Marcus D. Leech mleech at ripnet.com
Tue Apr 9 21:13:01 EDT 2013

> I have 2 SBX daughterboards in USRP N210s that I am using with UHD 
> 3.4.1. After tuning (set_rx_freq()), I immediately check the lo_locked 
> sensor and have never gotten false back. Is this normal that the SBX 
> LO locks instantly from the perspective of the host? Thanks.
> -Nathan Perelman
It takes a few dozen usecs, typically.  And with network-stack latency, 
you're likely to never see it go "false", unless it's broken.  By the 
time you ask,
   it's already happened.

Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium

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