Lime sdr mini quick test failed

Projects LimeSDR
1

Hello Myriad rf community, my lime sdr mini failed its test could i please get some help.

-> here is my logs

[ TESTING STARTED ]
->Start time: Thu Mar 26 15:33:53 2020

->Device: LimeSDR Mini, media=USB 3.0, module=FT601, addr=24607:1027, serial=1D53C91C68FEB9
Serial Number: 1D53C91C68FEB9

[ Clock Network Test ]
->REF clock test
Test results: 4648; 17845; 31042 - PASSED
->VCTCXO test
Results : 6711060 (min); 6711215 (max) - PASSED
->Clock Network Test PASSED

[ FPGA EEPROM Test ]
->Read EEPROM
->Read data: 13 07 11 13 07 11 02
->FPGA EEPROM Test PASSED

[ 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):
CH0 (SXR=1000.0MHz, SXT=1005.0MHz): Result:(-37.3 dBFS, 5.00 MHz) - FAILED
->Run Tests (TX_1 -> LNA_H):
CH0 (SXR=2100.0MHz, SXT=2105.0MHz): Result:(-15.3 dBFS, 5.00 MHz) - PASSED
->RF Loopback Test FAILED

=> Board tests FAILED <=

2

If you re-run the test, and also while the board is still cold, do you consistently get a failure for TX_2 -> LNA_W loopback?

3

have the same with my Lime SDR mini. Except, in my case sometimes test failed and sometimes not. When it failed it is always at the tx2/lnaw loop test.
But…that was with the recent PothosSDR-2020.01.26-vc14-x64.
This morning i have downloaded a version PothosSDR-2019.01.26-vc14-x64, and programmed again the lime sdr mini with the lime suite gui.
When i look in lime suite gui i see at device info that the "gateware"version was 1.3 and now is 1.28.
Now i started again the lme sdr quick test again and again and maybe 30 times: ALL TESTS PASSED.
So do not send back your Lime SDR mini but first try this. Maybe a bug in the recent software???

1 Like
4

Thanks, this is a useful data point.

@Zack, @Garmus, any thoughts on this?

5

Well…i am not sure if it is useful anymore since i had again some loop test failed. Even with 1.28.
I know the test has to be done with no cables or equipment connected and a few days ago i saw in another topic that you have to do the test when the Lime is cold.

I have done some more tests now just after start-up and then the test is passed.
Anyway, when the test is NOT passed…the Lime is still working perfect in transmit as far a i can tell.
So, i stop testing and continue in normal use.