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RE: [Discuss-gnuradio] USRP 4 Questions

From: Weber, Michael J. \(US SSA\)
Subject: RE: [Discuss-gnuradio] USRP 4 Questions
Date: Sun, 4 Mar 2007 19:41:51 -0500

The v4 USRP has a fan header next to the power jack. I don't know what
the recommended solution for v3 USRPs is, although I suspect it's along
the lines you mentioned. :-) Some v3 USRPs already have a power lead
takeoff for an oscillator sub-board on the bottom of the USRP; I suspect
the fan leads could attach to the same place. Hopefully there is
filtering enough that the fan motor would not butcher the oscillator
signal, but someone else will have to speak to that.


-----Original Message-----
From: Eric A. Cottrell [mailto:address@hidden 
Sent: Sunday, March 04, 2007 7:27 PM
To: Weber, Michael J. (US SSA)
Cc: gnuradio mailing list
Subject: Re: [Discuss-gnuradio] USRP 4 Questions

Weber, Michael J. (US SSA) wrote:
> Eric, I also recently received some enclosures... this is my two 
> cents, YMMV, etc:
> If the fan is installed such that it blows in onto the USRP, it will 
> receive the direct benefit of the airflow. However, the fan makes a 
> lot of noise in this configuration because the blades are right next 
> to the perforated enclosure wall.


I got some fuses from Mouser so I am all set.

The only unanswered part is where do you hook the fan up to?  Does the
USRP 4 have the holes for a connector or is it cut the fan connector off
and wire direct to the board?

73 Eric

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