Re: [Discuss-gnuradio] [USRP2]Receiving a DC voltage

[Karthik]

On Tue, Mar 17, 2009 at 9:37 AM, Johnathan Corgan <address@hidden> wrote:

On Tue, Mar 17, 2009 at 5:26 AM, dbeken <address@hidden> wrote:

> last time I didn´t get a solution for my problem of interpolating and
> decimating using a sinusoidal signal. Now i went even easier. I connected a
> DC Power Supply (with 0.01A max limit) to my LFRX daughterboard. The USRP2
> Source is only connected to a Scope Sink. But with 0.5 Voltage input, I only
> see very small variations about the 0 line. The current is 0.01 A. So, what
> can I do to see a signal?

Make sure you don't have AC coupling turned on in your scope block.

Johnathan

For receiving DC signals, you need to disable the DC offset removal which is automatically performed in the USRP. I am not sure if this happens in USRP2 as well, most likely it does. This thread has the discussion and how it was solved. http://lists.gnu.org/archive/html/discuss-gnuradio/2008-10/msg00465.html

Karthik