Hi Derek, That makes sense, yeah. Thanks!
2018-02-12 23:42 GMT+01:00 Derek Kozel <[email protected]>: > Hello Jonathan, > > The gain setting in the USRPs are indexed from minimum gain. On most this > means a gain of 0 is actually an attenuation of the signal. The N210's gain > range is based on what amplifiers and attenuators are on the daughterboard > that is installed. The ranges aren't calibrated to be aligned across > different USRP products so what you are seeing is completely normal. > > On Feb 12, 2018 10:21 PM, "Jonathan B via USRP-users" < > [email protected]> wrote: > > Hi Marcus, > > Thanks! Didn't realise there was a larger range for the B2xx family. At > 60dB it seems to perform as well as 20dB on the N210. Is that normal? > > But either way - something I can work with. Thanks. > > > <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=icon> > Virus-free. > www.avast.com > <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=link> > <#m_3513110979629845876_m_-3868461721852336890_m_4051027392395733961_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> > > 2018-02-09 20:53 GMT+01:00 Marcus D. Leech via USRP-users < > [email protected]>: > >> On 02/09/2018 02:48 PM, Jonathan B via USRP-users wrote: >> >> Hi Jeff, >> >> Thanks for the response. >> >> In both cases a gain of 20dB. >> >> Best, >> Jonathan >> >> The total gain-control range on the B2xx family is larger (80dB) than on >> the cards used on X3xxx, N2xx, etc (typically 30.5dB) >> >> Try larger gain values on the B210, like 40 or 50dB. >> >> >> >> On Feb 9, 2018 8:23 PM, "Jeff Long via USRP-users" < >> [email protected]> wrote: >> >>> What are you using for gain settings? >>> >>> On 02/09/2018 01:09 PM, Jonathan B via USRP-users wrote: >>> >>>> Hi everyone, >>>> >>>> I seem to be having issues with the B210 transmitting at an incredibly >>>> low power. >>>> >>>> I seem to be getting a 60db difference at the receiver (spectrum >>>> analyzer) between the B210 and N210 with perfectly identically configured >>>> transmissions using the simple uhd "tx_waveform" example program. >>>> >>>> Has anyone experienced such an issue. I have two B210s that seem to be >>>> acting the same way. >>>> >>>> Thanks in advance. >>>> >>>> Best Regards, >>>> Jonathan >>>> >>>> ----------------------------------------- >>>> >>>> Probe Output of the B210: >>>> >>>> -- Loading firmware image: C:\Program Files\GNURadio-3.7\share\uhd\i >>>> mages\usrp_b200_fw.hex... >>>> -- Detected Device: B210 >>>> -- Loading FPGA image: C:\Program >>>> Files\GNURadio-3.7\share\uhd\images\usrp_b210_fpga.bin... >>>> done >>>> -- Operating over USB 3. >>>> -- Detecting internal GPSDO.... No GPSDO found >>>> -- Initialize CODEC control... >>>> -- Initialize Radio control... >>>> -- Performing register loopback test... pass >>>> -- Performing register loopback test... pass >>>> -- Performing CODEC loopback test... pass >>>> -- Performing CODEC loopback test... pass >>>> -- Setting master clock rate selection to 'automatic'. >>>> -- Asking for clock rate 16.000000 MHz... >>>> -- Actually got clock rate 16.000000 MHz. >>>> -- Performing timer loopback test... pass >>>> -- Performing timer loopback test... pass >>>> _____________________________________________________ >>>> / >>>> | Device: B-Series Device >>>> | _____________________________________________________ >>>> | / >>>> | | Mboard: B210 >>>> | | revision: 4 >>>> | | product: 2 >>>> | | serial: 3113A66 >>>> | | name: MyB210 >>>> | | FW Version: 8.0 >>>> | | FPGA Version: 14.0 >>>> | | >>>> | | Time sources: none, internal, external, gpsdo >>>> | | Clock sources: internal, external, gpsdo >>>> | | Sensors: ref_locked >>>> | | _____________________________________________________ >>>> | | / >>>> | | | RX DSP: 0 >>>> | | | >>>> | | | Freq range: -8.000 to 8.000 MHz >>>> | | _____________________________________________________ >>>> | | / >>>> | | | RX DSP: 1 >>>> | | | >>>> | | | Freq range: -8.000 to 8.000 MHz >>>> | | _____________________________________________________ >>>> | | / >>>> | | | RX Dboard: A >>>> | | | _____________________________________________________ >>>> | | | / >>>> | | | | RX Frontend: A >>>> | | | | Name: FE-RX2 >>>> | | | | Antennas: TX/RX, RX2 >>>> | | | | Sensors: temp, rssi, lo_locked >>>> | | | | Freq range: 50.000 to 6000.000 MHz >>>> | | | | Gain range PGA: 0.0 to 76.0 step 1.0 dB >>>> | | | | Bandwidth range: 200000.0 to 56000000.0 step 0.0 Hz >>>> | | | | Connection Type: IQ >>>> | | | | Uses LO offset: No >>>> | | | _____________________________________________________ >>>> | | | / >>>> | | | | RX Frontend: B >>>> | | | | Name: FE-RX1 >>>> | | | | Antennas: TX/RX, RX2 >>>> | | | | Sensors: temp, rssi, lo_locked >>>> | | | | Freq range: 50.000 to 6000.000 MHz >>>> | | | | Gain range PGA: 0.0 to 76.0 step 1.0 dB >>>> | | | | Bandwidth range: 200000.0 to 56000000.0 step 0.0 Hz >>>> | | | | Connection Type: IQ >>>> | | | | Uses LO offset: No >>>> | | | _____________________________________________________ >>>> | | | / >>>> | | | | RX Codec: A >>>> | | | | Name: B210 RX dual ADC >>>> | | | | Gain Elements: None >>>> | | _____________________________________________________ >>>> | | / >>>> | | | TX DSP: 0 >>>> | | | >>>> | | | Freq range: -8.000 to 8.000 MHz >>>> | | _____________________________________________________ >>>> | | / >>>> | | | TX DSP: 1 >>>> | | | >>>> | | | Freq range: -8.000 to 8.000 MHz >>>> | | _____________________________________________________ >>>> | | / >>>> | | | TX Dboard: A >>>> | | | _____________________________________________________ >>>> | | | / >>>> | | | | TX Frontend: A >>>> | | | | Name: FE-TX2 >>>> | | | | Antennas: TX/RX >>>> | | | | Sensors: temp, lo_locked >>>> | | | | Freq range: 50.000 to 6000.000 MHz >>>> | | | | Gain range PGA: 0.0 to 89.8 step 0.3 dB >>>> | | | | Bandwidth range: 200000.0 to 56000000.0 step 0.0 Hz >>>> | | | | Connection Type: IQ >>>> | | | | Uses LO offset: No >>>> | | | _____________________________________________________ >>>> | | | / >>>> | | | | TX Frontend: B >>>> | | | | Name: FE-TX1 >>>> | | | | Antennas: TX/RX >>>> | | | | Sensors: temp, lo_locked >>>> | | | | Freq range: 50.000 to 6000.000 MHz >>>> | | | | Gain range PGA: 0.0 to 89.8 step 0.3 dB >>>> | | | | Bandwidth range: 200000.0 to 56000000.0 step 0.0 Hz >>>> | | | | Connection Type: IQ >>>> | | | | Uses LO offset: No >>>> | | | _____________________________________________________ >>>> | | | / >>>> | | | | TX Codec: A >>>> | | | | Name: B210 TX dual DAC >>>> | | | | Gain Elements: None >>>> >>>> <https://www.avast.com/sig-email?utm_medium=email&utm_source >>>> =link&utm_campaign=sig-email&utm_content=webmail&utm_term=icon> >>>> Virus-free. www.avast.com <https://www.avast.com/sig-ema >>>> il?utm_medium=email&utm_source=link&utm_campaign=sig-email&u >>>> tm_content=webmail&utm_term=link> >>>> >>>> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> >>>> >>>> >>>> _______________________________________________ >>>> USRP-users mailing list >>>> [email protected] >>>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >>>> >>>> >>> _______________________________________________ >>> USRP-users mailing list >>> [email protected] >>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >>> >> >> >> _______________________________________________ >> USRP-users mailing >> [email protected]http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >> >> >> >> _______________________________________________ >> USRP-users mailing list >> [email protected] >> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >> >> > > _______________________________________________ > USRP-users mailing list > [email protected] > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com > > >
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