Great, that worked. /Johan
2018-08-28 17:06 GMT+02:00 Marcus D. Leech via USRP-users < usrp-users@lists.ettus.com>: > On 08/28/2018 10:51 AM, Johan Lans via USRP-users wrote: > > Hi > I'm a hardware developer who is trying to get the B200 working. > Everything seemed fine until I actually connected a spectrum analyzer to > the tx output to find no output when the TX led is red. Ive measured the > output with both spec and oscilloscope during benchmark and tx_waveforms > with this command > ./tx_waveforms --freq 915e6 --rate 5e6 --gain 10 --wave-type SINE > --wave-freq 915e1 > > I've probed the circuit board along the TX signal path up to the analog > devices chip, nothing but DC-voltages. Receiveing works excellent. > > Does this mean that the board output is dead or can in be software > related? > I'll paste the uhd probe output: > > ~ $ uhd_usrp_probe > [INFO] [UHD] linux; GNU C++ version 8.2.0; Boost_106200; > UHD_3.13.0.HEAD-0-g0ddc19e5 > [INFO] [B200] Detected Device: B200 > [INFO] [B200] Loading FPGA image: /usr/local/share/uhd/images/us > rp_b200_fpga.bin... > [INFO] [B200] Operating over USB 3. > [INFO] [B200] Detecting internal GPSDO.... > [INFO] [GPS] No GPSDO found > [INFO] [B200] Initialize CODEC control... > [INFO] [B200] Initialize Radio control... > [INFO] [B200] Performing register loopback test... > [INFO] [B200] Register loopback test passed > [INFO] [B200] Setting master clock rate selection to 'automatic'. > [INFO] [B200] Asking for clock rate 16.000000 MHz... > [INFO] [B200] Actually got clock rate 16.000000 MHz. > _____________________________________________________ > / > | Device: B-Series Device > | _____________________________________________________ > | / > | | Mboard: B200 > | | revision: 5 > | | product: 1 > | | serial: 3134BB7 > | | name: MyB200 > | | FW Version: 8.0 > | | FPGA Version: 15.0 > | | > | | 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 Dboard: A > | | | _____________________________________________________ > | | | / > | | | | RX Frontend: A > | | | | 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: B200 RX dual ADC > | | | | Gain Elements: None > | | _____________________________________________________ > | | / > | | | TX DSP: 0 > | | | > | | | Freq range: -8.000 to 8.000 MHz > | | _____________________________________________________ > | | / > | | | TX Dboard: A > | | | _____________________________________________________ > | | | / > | | | | TX Frontend: A > | | | | 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 0.2 dB > | | | | Bandwidth range: 200000.0 to 56000000.0 step 0.0 Hz > | | | | Connection Type: IQ > | | | | Uses LO offset: No > | | | _____________________________________________________ > | | | / > | | | | TX Codec: A > | | | | Name: B200 TX dual DAC > | | | | Gain Elements: None > > > best regards /Johan > > > The gain-control range on the AD936x is about 90dB, so try a higher gain > value. > > > > _______________________________________________ > USRP-users mailing list > USRP-users@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com > >
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