On 02/12/2024 05:43, Muhammad Anas wrote:
Dear,
I'm using USRP N210 with GNU radio companion for transmission of
signal of 50M Hz and testing the signal on the R&S FSH20 Spectrum
analyzer using SMA cable, unfortunately I am not getting the desired
gain level of 20 dBm according to the datasheet of USRP, in the
spectrum analyzer. I'm getting -92 dBm at 0 level gain from the usrp
sink block in GNU radio and getting the only max -68 dBm gain at 25
gain level from USRP sink block. After 25, to even 100 level, I'm
still getting the -68 dBm at the receiving point. Here are my settings
of FSH20:
Ref: -20 dBm
Att: 20 dB
RBW and VBW: 30k Hz
SWT: 1.29 s
Kindly, help me that if the problem is with the USRP or I will do
something to achieve the desired gain of 20 dBm, without using any
external amplifier. What are the reasons behind this problem and how I
can diagnose them.
Regards
Muhammad Anas
You haven't said which daughtercard you're using. I don't think ANY of
our radios will produce +20dBm, even at
MAX gain with high baseband magnitude.
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