RF Loopback Test FAILED As Usual

Impossible to make my Lime Mini to work, and looks like I am not the only one.
Is there a way to reset via command line, or any other magic tweak?

Tested on Linux Ubuntu, Windows 7, Windows 10

Worked once 6-month ago during 10 minutes in RX only with sdr console for listening to FM Radio

Now impossible to replicate



LimeUtil --info
Version information:
Library version: v20.10.0-g1480bfea
Build timestamp: 2020-11-10
Interface version: v2020.10.0
Binary interface: 20.10-1

System resources:
Installation root: /usr/local
User home directory: /home/daniel
App data directory: /home/daniel/.local/share/LimeSuite
Config directory: /home/daniel/.limesuite
Image search paths:
- /home/daniel/.local/share/LimeSuite/images
- /usr/local/share/LimeSuite/images

Supported connections:

  • FT601
  • FX3
  • PCIEXillybus

->Start time: Wed Nov 11 23:26:59 2020
->LimeSuite version: 20.10.0-g1480bfea

->Device: LimeSDR Mini, media=USB 3.0, module=FT601, addr=24607:1027, serial=1D4C20586F8373, HW=2, GW=1.30
Serial Number: 1D4C20586F8373
Chip temperature: 62 C

[ Clock Network Test ]
->REF clock test
Test results: 51836; 65033; 12694 - PASSED
->VCTCXO test
Results : 6711088 (min); 6711244 (max) - PASSED
->Clock Network Test PASSED

->Read data: 13 02 0B 13 02 0B 02

[ LMS7002M Test ]
->Perform Registers Test
->External Reset line test
Reg 0x20: Write value 0xFFFD, Read value 0xFFFD
Reg 0x20: value after reset 0x0FFFF
->LMS7002M Test PASSED

[ RF Loopback Test ]
->Configure LMS
->Run Tests (TX_2 -> LNA_W):
Failed to read samples: Timeout
CH0 (SXR=1000.0MHz, SXT=1005.0MHz): Result:(-14.0 dBFS, 5.00 MHz) - FAILED
->Run Tests (TX_1 -> LNA_H):
Failed to read samples: Timeout
CH0 (SXR=2100.0MHz, SXT=2105.0MHz): Result:(-14.0 dBFS, 5.00 MHz) - FAILED
->RF Loopback Test FAILED

=> Board tests FAILED <=

Elapsed time: 4.82 seconds

Frankly, Iā€™d start with proper cooling - 62C seems way too high for normal operation.

1 Like

Yes indeed, that temperature is way to high.
Get a cheap 5V fan, put it with some glue on the enclosure and connect it to the 5V points on the Lime SDR Mini. In my case temp is always max 39 degrees C.

62 degrees is too high even for a barebone limesdr mini. I never seen my LimeSDR mini go that high, not matter how hard I pushed it. Probably a faulty unit?