# Lime SDR Mini RF Loopback Test Failed

**URL:** <https://discourse.myriadrf.org/t/lime-sdr-mini-rf-loopback-test-failed/5062>\
**Category:** Uncategorized\
**Created:** [22 August 2019 07:46 UTC](https://discourse.myriadrf.org/t/lime-sdr-mini-rf-loopback-test-failed/5062 "2019-08-22T07:46:30Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![madhav](https://avatars.discourse-cdn.com/v4/letter/m/50afbb/32.png) [@madhav](https://discourse.myriadrf.org/u/madhav)\
**Post date:** [22 August 2019 07:46 UTC](https://discourse.myriadrf.org/t/lime-sdr-mini-rf-loopback-test-failed/5062/1 "2019-08-22T07:46:30Z")

</div>

Hello,  
I am receiving the following error while performing LimeSDR TestAPP to test my  
LimeSDR Mini: RF Loopback Test Failed. Please suggest required troubleshooting.  
[TESTING STARTED]  
-\>Start time: Tue Aug 20 13:32:01 2019  
-\>Device: LimeSDR Mini, media=USB 3.0, module=FT601, addr=24607:1027,  
serial=1D3AD74F809864  
Serial Number: 1D3AD74F809864  
[Clock Network Test]  
-\>REF clock test  
Test results: 47571; 60768; 8429 - PASSED  
-\>VCTCXO test  
Results : 6711002 (min); 6711168 (max) - PASSED  
-\>Clock Network Test PASSED  
[FPGA EEPROM Test]  
-\>Read EEPROM  
-\>Read data: 12 02 18 12 02 18 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:(-22.4 dBFS, 5.00 MHz) - FAILED  
-\>Run Tests (TX\_1 -\> LNA\_H):  
CH0 (SXR=2100.0MHz, SXT=2105.0MHz): Result:(-28.0 dBFS, 5.00 MHz) - FAILED  
-\>RF Loopback Test FAILED  
=\> Board tests FAILED \<=  
Elapsed time: 2.51 seconds