How to set the 4 Rx channel of USRP X310

Hi,

I did not find how to set my USRP X310 with 4 Rx channels. It runs well with 2 channels but I was unable to go to 4.

My X310 includes 2 Twin Rx boards having 2 Rx channels for each board (see the config below).

The X310 has only one IP address..

Thank you

JJ

>> findsdru
Checking radio connections...
Win32; Microsoft Visual C++ version 14.1; Boost_106501; UHD_3.13.1.0-vendor

---------- see libuhd version information above this line ----------

ans = 

  struct with fields:

     Platform: 'X310'
    IPAddress: '192.168.10.2'
    SerialNum: '3192B92'
       Status: 'Success'

>> probesdru

ans =

    '[INFO] [UHD] Win32; Microsoft Visual C++ version 14.1; Boost_106501; UHD_3.13.1.0-vendor
     [INFO] [X300] X300 initialization sequence...
     [INFO] [X300] Maximum frame size: 1472 bytes.
     [INFO] [X300] Radio 1x clock: 200 MHz
     [INFO] [GPS] Found an internal GPSDO: LC_XO, Firmware Rev 0.929b
     [WARNING] [UDP] The MTU (1472) is larger than the FastSendDatagramThreshold (1024)!
     This will negatively affect the transmit performance.
     See the transport application notes for more detail.
     
     [INFO] [0/DmaFIFO_0] Initializing block control (NOC ID: 0xF1F0D00000000000)
     [INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1308 MB/s)
     [INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1298 MB/s)
     [INFO] [0/Radio_0] Initializing block control (NOC ID: 0x12AD100000000001)
     [INFO] [0/Radio_1] Initializing block control (NOC ID: 0x12AD100000000001)
     [INFO] [0/DDC_0] Initializing block control (NOC ID: 0xDDC0000000000000)
     [INFO] [0/DDC_1] Initializing block control (NOC ID: 0xDDC0000000000000)
     [INFO] [0/DUC_0] Initializing block control (NOC ID: 0xD0C0000000000000)
     [INFO] [0/DUC_1] Initializing block control (NOC ID: 0xD0C0000000000000)
     [WARNING] [X300] Cannot update master clock rate! X300 Series does not allow changing the clock rate during runtime.
       _____________________________________________________
      /
     |       Device: X-Series Device
     |     _____________________________________________________
     |    /
     |   |       Mboard: X310
     |   |   revision: 11
     |   |   revision_compat: 7
     |   |   product: 30960
     |   |   mac-addr0: 00:80:2f:26:07:52
     |   |   mac-addr1: 00:80:2f:26:07:53
     |   |   gateway: 192.168.10.1
     |   |   ip-addr0: 192.168.10.2
     |   |   subnet0: 255.255.255.0
     |   |   ip-addr1: 192.168.20.2
     |   |   subnet1: 255.255.255.0
     |   |   ip-addr2: 192.168.30.2
     |   |   subnet2: 255.255.255.0
     |   |   ip-addr3: 192.168.40.2
     |   |   subnet3: 255.255.255.0
     |   |   serial: 3192B92
     |   |   FW Version: 6.0
     |   |   FPGA Version: 35.1
     |   |   FPGA git hash: d0360f7
     |   |   RFNoC capable: Yes
     |   |   
     |   |   Time sources:  internal, external, gpsdo
     |   |   Clock sources: internal, external, gpsdo
     |   |   Sensors: gps_gpgga, gps_gprmc, gps_time, gps_locked, gps_servo, ref_locked
     |   |     _____________________________________________________
     |   |    /
     |   |   |       RX Dboard: A
     |   |   |   ID: TwinRX Rev C (0x0095)
     |   |   |   Serial: 3193709
     |   |   |     _____________________________________________________
     |   |   |    /
     |   |   |   |       RX Frontend: 0
     |   |   |   |   Name: TwinRX RX0
     |   |   |   |   Antennas: RX1, RX2
     |   |   |   |   Sensors: lo_locked
     |   |   |   |   Freq range: 10.000 to 6000.000 MHz
     |   |   |   |   Gain range all: 0.0 to 93.0 step 1.0 dB
     |   |   |   |   Bandwidth range: 80000000.0 to 80000000.0 step 0.0 Hz
     |   |   |   |   Connection Type: II
     |   |   |   |   Uses LO offset: No
     |   |   |     _____________________________________________________
     |   |   |    /
     |   |   |   |       RX Frontend: 1
     |   |   |   |   Name: TwinRX RX1
     |   |   |   |   Antennas: RX1, RX2
     |   |   |   |   Sensors: lo_locked
     |   |   |   |   Freq range: 10.000 to 6000.000 MHz
     |   |   |   |   Gain range all: 0.0 to 93.0 step 1.0 dB
     |   |   |   |   Bandwidth range: 80000000.0 to 80000000.0 step 0.0 Hz
     |   |   |   |   Connection Type: QQ
     |   |   |   |   Uses LO offset: No
     |   |   |     _____________________________________________________
     |   |   |    /
     |   |   |   |       RX Codec: A
     |   |   |   |   Name: ads62p48
     |   |   |   |   Gain range digital: 0.0 to 6.0 step 0.5 dB
     |   |     _____________________________________________________
     |   |    /
     |   |   |       RX Dboard: B
     |   |   |   ID: TwinRX Rev C (0x0095)
     |   |   |   Serial: 3193707
     |   |   |     _____________________________________________________
     |   |   |    /
     |   |   |   |       RX Frontend: 0
     |   |   |   |   Name: TwinRX RX0
     |   |   |   |   Antennas: RX1, RX2
     |   |   |   |   Sensors: lo_locked
     |   |   |   |   Freq range: 10.000 to 6000.000 MHz
     |   |   |   |   Gain range all: 0.0 to 93.0 step 1.0 dB
     |   |   |   |   Bandwidth range: 80000000.0 to 80000000.0 step 0.0 Hz
     |   |   |   |   Connection Type: II
     |   |   |   |   Uses LO offset: No
     |   |   |     _____________________________________________________
     |   |   |    /
     |   |   |   |       RX Frontend: 1
     |   |   |   |   Name: TwinRX RX1
     |   |   |   |   Antennas: RX1, RX2
     |   |   |   |   Sensors: lo_locked
     |   |   |   |   Freq range: 10.000 to 6000.000 MHz
     |   |   |   |   Gain range all: 0.0 to 93.0 step 1.0 dB
     |   |   |   |   Bandwidth range: 80000000.0 to 80000000.0 step 0.0 Hz
     |   |   |   |   Connection Type: QQ
     |   |   |   |   Uses LO offset: No
     |   |   |     _____________________________________________________
     |   |   |    /
     |   |   |   |       RX Codec: B
     |   |   |   |   Name: ads62p48
     |   |   |   |   Gain range digital: 0.0 to 6.0 step 0.5 dB
     |   |     _____________________________________________________
     |   |    /
     |   |   |       TX Dboard: A
     |   |   |   ID: Unknown (0x0094)
     |   |   |   Serial: 3193709
     |   |   |     _____________________________________________________
     |   |   |    /
     |   |   |   |       TX Frontend: 0
     |   |   |   |   Name: Unknown (0x0094) - 0
     |   |   |   |   Antennas: 
     |   |   |   |   Sensors: 
     |   |   |   |   Freq range: 0.000 to 0.000 MHz
     |   |   |   |   Gain Elements: None
     |   |   |   |   Bandwidth range: 0.0 to 0.0 step 0.0 Hz
     |   |   |   |   Connection Type: IQ
     |   |   |   |   Uses LO offset: No
     |   |   |     _____________________________________________________
     |   |   |    /
     |   |   |   |       TX Codec: A
     |   |   |   |   Name: ad9146
     |   |   |   |   Gain Elements: None
     |   |     _____________________________________________________
     |   |    /
     |   |   |       TX Dboard: B
     |   |   |   ID: Unknown (0x0094)
     |   |   |   Serial: 3193707
     |   |   |     _____________________________________________________
     |   |   |    /
     |   |   |   |       TX Frontend: 0
     |   |   |   |   Name: Unknown (0x0094) - 0
     |   |   |   |   Antennas: 
     |   |   |   |   Sensors: 
     |   |   |   |   Freq range: 0.000 to 0.000 MHz
     |   |   |   |   Gain Elements: None
     |   |   |   |   Bandwidth range: 0.0 to 0.0 step 0.0 Hz
     |   |   |   |   Connection Type: IQ
     |   |   |   |   Uses LO offset: No
     |   |   |     _____________________________________________________
     |   |   |    /
     |   |   |   |       TX Codec: B
     |   |   |   |   Name: ad9146
     |   |   |   |   Gain Elements: None
     |   |     _____________________________________________________
     |   |    /
     |   |   |       RFNoC blocks on this device:
     |   |   |   
     |   |   |   * DmaFIFO_0
     |   |   |   * Radio_0
     |   |   |   * Radio_1
     |   |   |   * DDC_0
     |   |   |   * DDC_1
     |   |   |   * DUC_0
     |   |   |   * DUC_1

Answer 1

[Karunya Choppara]

The 4 channel support for TwinRx daughterboard with X300 and X310 is enabled in R2020a release.

[Papatoux]

Hi Karunya,

Sorry for the delay.

Thank you for this update. I have tested the running without enabling the synchronization between the 4 channels. The signal seems OK into the 4 channels.

But the init time of the exchange between the USRP and Matlab is still very long. > 1 minute for findsdru and opening of comm.SDRuReceiver. + more than 20 sec to get the first data...

Do you encounter this issue with the init time ? any progress regarding UHD 3.13 and ML2019.

Is it possible to open a support about this issue ? In this situation, the use of the USRP is impossible (too long init regarding the data acquisition time).

Thank you. I will accept the answer after your answer. Take care about your health !

JJ

[Karunya Choppara]

Hi JJ

The R2020a version of MATLAB uses UHD 3.15.0.

Please refer to the release notes for new features enabled in R2020a https://www.mathworks.com/help/supportpkg/usrpradio/release-notes.html

we are actively investing on improving the init time and data acquisition time for the USRP

Thanks

Karunya Ch

[Papatoux]

Hi Karunya,

Yes, the init time and data acquisition time are a huge issue. It is very heavy to use USRP + Matlab with this timing.

Do you have a delivery time for a solution ?

How can I be informed ?

Best regards and thank you.

JJ

[Karunya Choppara]

Hi JJ

The information about new features/capabilities for every release, will be updated on the release notes.

https://www.mathworks.com/help/supportpkg/usrpradio/release-notes.html

[Karunya Choppara]

The init time and data acquisition with USRP are optimized in R2022a MATLAB release