Blank FFT Viewer

Projects LimeSDR
1

Hello,
I’ve just got a LimeSDR-mini to learn about GSM and DBTV in a practical way, having a STEM background.
Now, I’m trying to view the spectrum of a 433MHz transmitter. I’ve set up the frequency in LimeSuiteGUI software, clicked Calculate and then Tune and lastly opened the FFT Viewer which shows an empty graph.
If I try running the GUI->Chip command, I always get the following error:

WARNING: SetPllFrequency: error configuring phase
ERROR: LML RX phase search FAIL

while in the terminal

 warning [darwin_abort_transfers] aborting all transactions on interface 1 pipe 4

I’m using OSX, is the unit faulty? How can I get it to work?
Thank you

2

@Zack @IgnasJ could you advise, please.

3

Hi @Anelito,

Execute LimeQuickTest and post log file here, please.

4

Here it is

$ LimeQuickTest --no-gui

[ TESTING STARTED ]

->Start time: Tue Dec 3 10:55:03 2019

->Device: LimeSDR Mini, media=USB 3.0, module=FT601, addr=24607:1027, serial=1D49835FC4C1AB

Serial Number: 1D49835FC4C1AB

[ Clock Network Test ]

->REF clock test

Test results: 41556; 54753; 2414 - PASSED

->VCTCXO test

Results : 6711044 (min); 6711211 (max) - PASSED

->Clock Network Test PASSED

[ FPGA EEPROM Test ]

->Read EEPROM

->Read data: 12 0C 14 12 0C 14 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:(-13.0 dBFS, 5.00 MHz) - PASSED

->Run Tests (TX_1 -> LNA_H):

CH0 (SXR=2100.0MHz, SXT=2105.0MHz): Result:(-12.8 dBFS, 5.00 MHz) - PASSED

->RF Loopback Test PASSED

=> Board tests PASSED <=

Elapsed time: 4.99 seconds

Apparently all tests are ok, yet there is no signal on the 433MHz band despite using a low-power transmitter next to the LimeSDR mini.

5

Board looks OK.
What LimeSuiteGUI version do you use? Make sure it is the latest one.

6

I am using the stable release from GitHub