discuss-gnuradio
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Discuss-gnuradio] Re: Q. USRP2+RFX2400 performances on dynamic range, a


From: Yc Park
Subject: [Discuss-gnuradio] Re: Q. USRP2+RFX2400 performances on dynamic range, and decim
Date: Fri, 22 May 2009 04:21:35 +0200

Yc Park wrote:
> Eric Blossom wrote:
>> On Thu, May 21, 2009 at 08:23:31AM +0200, Yc Park wrote:
>>> The recorded signal showed only about 25dB between the in-band spectrum
>>> level(-25dBm/RBW) and the noise floor (-50dBm/RBW) while the original
>>> signal shows at least 45dB.
>> 
>> What gain setting are you using?
>> Have you tried lowering it?
>> 
>> Eric
> 
> The gain was 10dB.  With higher gain, the ACPR gets worse with the given 
> input power.
> 
> I'm sorry that I do not know how to upload the captured spectrum, but it 
> is exactly as I mentioned in the first place: The noise floor is about 
> -50dBm while the in-band signal is at -25dBm over the 8.8MHz of the 
> signal bandwidth.

Forgot to mention: I also tested the gain 0, -10(I guess the result with 
negative gain was same with 0dB). But nothing much different with the 
spectrum.
-- 
Posted via http://www.ruby-forum.com/.




reply via email to

[Prev in Thread] Current Thread [Next in Thread]