Hi Zhongyuan. The USRP N310 does not have any internal lighting surge protection. It is intended as a benchtop SDR. For other use cases, you are free to customize the device as you see fit. Marcus's suggestions are good ones.
-Robin On Fri, May 11, 2018 at 10:06 AM, Marcus D. Leech via USRP-users < usrp-users@lists.ettus.com> wrote: > On 05/11/2018 12:57 PM, Zhongyuan Zhao via USRP-users wrote: > > Hi, > > I have an USRP N310 that will be connected to rooftop antennas. The USRP > is located in an equipment room filled with telecom equipments on the > rooftop of a high building. The antenna is outdoor along with many other > cellular/microwave antennas. > > Does the USRP N310 has any internal lightning surge protection circuit? > What is your recommend practice for lightning surge protection? Or do you > have any documents for this? > Shall I use lightning surge arrester on every antenna cable including the > active GPS antenna? > > Thanks! > > Zhongyuan Zhao > > PhD Candidate, > Department of Computer Science & Engineering, > University of Nebraska-Lincoln > > > Yes, you should probably have well-grounded lightning protection in front > of the device. The telecom folks probably already have an "entry bulkhead" > where > all their coax comes through, with inline arrestors on every circuit. > It would be wise to follow their practice in this regard. > > Here at CCERA (http://www.ccera.ca) we use an aluminum bulkhead panel on > the cable entrance to the lab, and that panel is directly grounded to > a ground rod right outside the lab window. Each coax circuit has a > relatively-inexpensive inline coaxial surge protector on it--designed for > 75 ohm > CATV circuits. > > You may want to look at products by companies like Polyphaser. > > > > > _______________________________________________ > USRP-users mailing list > USRP-users@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com > >
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