[srslte-users] LimeSDR mini SXT tune failed

[Aren Müller]

Hi all,
I'm trying to use limeSDR mini as front-end to run the enb. With LimeSuiteGUI I can set the desired frequency for TX and RX and get no tune fail, but when i run the enb i get an error message saying [ERROR] Tx Calibration: MCU error 4 (SXT tune failed). What could be the problem? attached find you the enb.log and the enb.conf files. When I run "sudo srsenb" i also get [ERROR] Rx calibration: MCU error 3 (SXR tune failed).

Furthermore, when i run the LimeQuickTest the board pass all the test sucessfully.

Here is the console output for the enb:

# srsenb

Built in Release mode using 19.3.0.

---  Software Radio Systems LTE eNodeB  ---

Reading configuration file /root/.config/srslte/enb.conf...
[INFO] [UHD] linux; GNU C++ version 8.3.0; Boost_106700; UHD_3.14.0.0-0-unknown
Soapy has found device #0: addr=24607:1027, driver=lime, label=LimeSDR Mini [USB 3.0] 1D4C2F57FB99AC, media=USB 3.0, module=FT601, name=LimeSDR Mini, serial=1D4C2F57FB99AC,
[INFO] Make connection: 'LimeSDR Mini [USB 3.0] 1D4C2F57FB99AC'
[INFO] Reference clock 40.00 MHz
[INFO] Device name: LimeSDR-Mini
[INFO] Reference: 40 MHz
[INFO] LMS7002M calibration values caching Disable
Setting up Rx stream with 1 channel(s)
Setting up Tx stream with 1 channel(s)
[INFO] RX LPF configured
Set Rx bandwidth to 2.50 MHz
[INFO] Filter calibrated. Filter order-4th, filter bandwidth set to 5 MHz.Real pole 1st order filter set to 2.5 MHz. Preemphasis filter not active
[INFO] TX LPF configured
Set Tx bandwidth to 5.00 MHz
Available device sensors:
 - clock_locked
 - lms7_temp
Available sensors for Rx channel 0:
 - lo_locked
[ERROR] Tx Calibration: MCU error 4 (SXT tune failed)
[INFO] Rx calibration finished
State of gain elements for Rx channel 0 (AGC not supported):
 - TIA: 9.00 dB
 - LNA: 30.00 dB
 - PGA: -4.00 dB
State of gain elements for Tx channel 0 (AGC not supported):
 - TIA: 9.00 dB
 - LNA: 30.00 dB
 - PGA: -4.00 dB
Rx antenna set to LNAH
Tx antenna set to BAND1

Warning burst preamble is not calibrated for device lime_mini. Set a value manually

Setting frequency: DL=1842.1 Mhz, UL=1747.1 MHz
[INFO] Selected TX path: Band 2
Set master clock rate to 23.04 MHz
Setting Sampling frequency 5.76 MHz
[INFO] RX LPF configured
Set Rx bandwidth to 4.32 MHz
[INFO] Rx calibration finished
^CStopping srsENB... Press Ctrl+C 9 more times to force stop
[INFO] Filter calibrated. Filter order-4th, filter bandwidth set to 5 MHz.Real pole 1st order filter set to 2.5 MHz. Preemphasis filter not active
[INFO] TX LPF configured
Set Tx bandwidth to 5.00 MHz
[INFO] Tx calibration finished

Warning TX/RX time offset has not been calibrated for device lime_mini. Set a value manually


==== eNodeB started ===
Type <t> to view trace
[WARNING] L
[WARNING] L
[WARNING] L
[WARNING] L
[WARNING] L
[WARNING] L
[WARNING] L
[WARNING] L
[WARNING] L
[WARNING] L
[WARNING] L
Warning could not stop properly PHY
Saving MAC PCAP file
[WARNING] popping from TX, samples popped 600/1020
---  exiting  ---

Best Regards,
Aren
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