how can i measure SNR(S/N)value using FSP Spectrum analyser

[tadhika]

hi ,

 I want to measure S/N value using spectrum analyser.i already installed rsspecan instrument driver.I also configured span,center frequency ,RBW,VBW etc but i am not able to get measured S/N value.I have attached my vi here with.how could i measure SNR Ratio??can you please help me!

thanks.

Tadhika

[tadhika]

Actually, i have to set one refrence marker and two delta marker and then read the value of this delta marker.Refrence marker should be in the center and

average of these two delta marker gives me the desired value.but i am not able to connect these markers in my vi..pls can anyone help me?

[Andrea_Perin]

HI tadhika,

have you checked if with the instrument dirver of Rohde&Schwarz you have also example for S/N measurement ?

Have you tried to ask their support if they have something that goes in this direction.

This is pretty an instrument issue more than a LV one.

Best regards

Andrea P.

[juergenstraub]

Hi, first of all I'd recommend to contact the R&S customer support center to be shure the measure the correct value. Did you really measure the actual noise, or do you measure the noise which is "only" displayed?

But anyway, did you have had a look at this example: http://www2.rohde-schwarz.com/file/rsspecan_lv8_noise_marker_example.zip

There is the setup of one noise marker shown. With your already existing marker value this should do the trick, also in case of two noise markers; just use the rsspecan Configure Marker Noise Measurement.vi again with input parameter <YourMarker+1> of the "Marker" input of the VI.

Hope that helps?

juergen

[tadhika]

Thanks a lot for your support.