Dear all, I have read somewhere that the XCVR2450 daughter boards have an RSSI measurement that can be read from software. Does any one tried it via Simulink or GNURadio or have any knowledge about it. Best Regards Usman Ali

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi Usman Ali, it's a sensor that you can read using get_dboard_sensor() http://gnuradio.org/doc/doxygen/classgr_1_1uhd_1_1usrp__source.html#ac099e8d21b818fb9bc31a357d218021c from within GNU Radio; the sensor name is "rssi", and it returns a value in dBm (as double). Refer to http://files.ettus.com/uhd_docs/doxygen/html/classuhd_1_1usrp_1_1multi__usrp.html#acd37d327931cec64e3701eb2a5aa7bfb to see how it's done directly using UHD. I seem to be repeating myself, but: Be careful when using something like an RSSI. Received Signal Strength *always* relative to some signal model, incorporating considered bandwidth, assumptions on the modulation scheme, duration of transmission, generally: It's a *estimation* of received signal strength based on *some* property of the received signal. If that estimator fits your signal well depends on your signal! The RSSI value depends on the LNA setting! The UHD source code (uhd/host/lib/usrp/dboard/db_xcvr2450.cpp tells us to have a look at the MAX2829 Datasheet p. 16, to understand what's really going on here. http://datasheets.maximintegrated.com/en/ds/MAX2828-MAX2829.pdf Greetings, Marcus On 28.03.2014 16:26, Usman Ali wrote: > Dear all, I have read somewhere that the XCVR2450 daughter boards > have an RSSI measurement that can be read from software. Does any > one tried it via Simulink or GNURadio or have any knowledge about > it. > > Best Regards Usman Ali > > > > _______________________________________________ USRP-users mailing > list USRP-users@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com > -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJTNZhVAAoJEBQ6EdjyzlHtKAsH/2wwjgg2HWQqT37f9VK0Brer Dj6bm+3GNNXPgEQ0FGzGl1m/PM1NI4MEaojjk0WFHChlXjUGEawuD8U7fsiUb0JF YCGF3bfeFBIK8Va5reRwbu5+U4ScF3PgwbvnXpikQOBQDOQ89++BwfTw3pKPt0NG jno6tf7ULTowOghfLl/QFrcL6CHt5C/+dpgMMDzcFyr3OJh51nbRb7DHQ/HvjIS+ p8EW+V4c01Bl9aWCPJRBG9Fyf4gXB7RhAxHTNxPA0sZSglfiQ9JNsS7QJMZWO3oW kb5yoW0PLMyp4TogOmflp0dGv+DE/Fd+bgZZSN4EztsV2fvRJwUdo5kcRkEDpzo= =5Nbl -----END PGP SIGNATURE-----