Hi Arthur. As the Ettus Knowledge Base points out, the DBSRX2 is a very old product and has been EOLed. The schematic is available here: http://files.ettus.com/schematics/dbsrx2/dbsrx2.pdf .
The tunable filter capability is provided by the MAX2112 IC. Datasheet here: https://datasheets.maximintegrated.com/en/ds/MAX2112.pdf The relevant UHD driver code is here: https://github.com/EttusResearch/uhd/blob/maint/host/lib/usrp/dboard/db_dbsrx2.cpp -Robin On Sun, Sep 10, 2017 at 10:14 AM, Chu, Arthur H via USRP-users < usrp-users@lists.ettus.com> wrote: > Dear all, > > I am building a DBSRX2-based USRP application that requires > highly-selective filtering characteristics (~1 MHz). With the UHD > multi_usrp::set_rx_bandwidth function, the lowest value I can achieve is 8 > MHz, as specified in > > https://kb.ettus.com/About_USRP_Bandwidths_and_Sampling_ > Rates#Analog_Bandwidth > > However, in the product page > > https://kb.ettus.com/DBSRX2 > > it is stated that the daughterboard is also equipped with a "1-60 MHz > channel filter". I have gone through the documentation and the mail list > archive, but could not find any description regarding how this channel > filter is set. > > I am wondering if anyone has experience regarding this matter. Thank you. > > Kind regards, > > Arthur Chu > Research Assistant > Dept of Electrical and Computer Engineering > University of Illinois at Urbana-Champaign > > _______________________________________________ > USRP-users mailing list > USRP-users@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >
_______________________________________________ USRP-users mailing list USRP-users@lists.ettus.com http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
