Ed Criscuolo wrote: > Anyone know what the allowable gain settings are when using the USRP > with the LFRX daughterboard? I believe I read somewhere that 20 is > the default and units are dB, but what are the min/recommended/max > values? I tried digging them out of usrp1_source_c.cc, > usrp1_source_base.cc, and usrp_standard.cc (all from rel 3.0.3) but > had no luck.
The allowable gain range for the LFRX is 0 to 20. The LFRX board has no inherent gain itself; what you are actually adjusting is the programmable gain amplifier at the input to the motherboard AD9862 ADC. You are setting the ADC full-scale value to 2V p-p when gain is set to 0, and at 0.2V p-p when gain is set to 20. -- Johnathan Corgan Corgan Enterprises LLC http://corganenterprises.com _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
