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From: | Josh Blum |
Subject: | Re: [Discuss-gnuradio] Cannot change transmit power |
Date: | Sat, 15 Sep 2012 02:37:42 -0400 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:15.0) Gecko/20120827 Thunderbird/15.0 |
> > Although i have defined set_tx_amplitude and at run time i do provide the > user option --tx-amplitude value is set to 0.25 but it still transmits at > 16dBm (max power of a USRP N200) when you would expect it to be around a > quarter of that power. > Any suggestions in this regard would be greatly appreciated. > The code looked correct as far as set_k on the multiplier. I think a good control test would be to transmit zeros and compare that to multiply with set_k(0). You might take a look at the uhd_siggen_gui and try some test waveforms with slide the amplitudes around and see what your measurement equipment is showing. -josh
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