Wideband Spectrum Monitoring example

[elhatzi]

Hello,

I am using the Wideband Spectrum Monitiring example (https://decibel.ni.com/content/docs/DOC-21823) with a USRP2 and an RFX2400 daughterboard to do some measurments on the ISM band. I have modified it to continiously sweep the band, however I always get some peaks on the received signal even when there is no transmission.

Any suggestion would be of great help.

Thank you in advance,
Lefteris

[johnsold]

That is very periodic at ~700 MHz. Have you looked to see if there is anything at that frequency? It could also be the result of a narrow pulse (~1.4 ns) that is getting in somewhere. Narrow pulses can ahve aspectrum similar to what you are seeing.

Lynn

[DOHAAACB19619]

Hi everybody.
I downloaded the Wide band Spectrum Analysis example as my project is to make spectrum scan for certain area I tried it , but there is a problem that it may be an obstacle in my project .
http://www.ni.com/white-paper/13882/en
the software is: labview 2015
the hardware is:USRP2932
-connecting the laptop to the usrp2932 and inserting the suitable parameters ,the problem is that when I make the scan there are many discontinuities along all the band ,any one can give me an answer for this problem and how I can solve this problem ,there is an screenshot for my code.