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" <usrp-users@lists.ettus.com <mailto:usrp-users@lists.ettus.com>> 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\images\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

        
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