USRP temperature constraints?


#1

hi,

I was just wondering whether the USRP has got some temperature specs
that i should take into account.

e.g.
maximum continuous usage time, need for cooling, possibility to be
enclosed in a case or anything else.

…just because I noticed that during long testing sessions (2 to 4
hours) the FPGA and the TVRX warm up quite a bit.

thanks

vincenzo


#2

On Sat, 2006-05-27 at 01:26 +0200, Vincenzo P. wrote:

hours) the FPGA and the TVRX warm up quite a bit.
All of the chips in the USRP are specified over at least the 0-70C
range. At room temperature the USRP can run all-out continuously for
days at a time. Any enclosure should take the power consumption of the
system into account. This can be as high as 15-18 Watts depending on
what daughterboards you use.

An enclosure for the USRP will be released some time in the next 2
months.

Matt


#3

On Mon, 2006-05-29 at 23:36 -0700, Matt E. wrote:

…just because I noticed that during long testing sessions (2 to 4

Matt

thanks
vincenzo


#4

Vincenzo P. wrote:

Matt

I run my USRP+DBS_RX combination inside a styrofoam cooler box, in order
to stabilize the temperature.
With a room temperature near 20C, it runs at about 38C. I run the
USRP+DBS_RX more-or-less
continuously for radio astronomy applications. In my application
tiny temperature-induced gain
variations can be a real problem, hence the need to stabilize the
temperature.