# LimeQuickTest fails on TX\_1 -\> LNA\_W (CH1) (LimeSDR-USB)

**URL:** <https://discourse.myriadrf.org/t/limequicktest-fails-on-tx-1-lna-w-ch1-limesdr-usb/4153>\
**Category:** LimeSDR\
**Created:** [9 February 2019 00:25 UTC](https://discourse.myriadrf.org/t/limequicktest-fails-on-tx-1-lna-w-ch1-limesdr-usb/4153 "2019-02-09T00:25:13Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![zeewox](https://avatars.discourse-cdn.com/v4/letter/z/a5b964/32.png) [@zeewox](https://discourse.myriadrf.org/u/zeewox)\
**Post date:** [9 February 2019 00:25 UTC](https://discourse.myriadrf.org/t/limequicktest-fails-on-tx-1-lna-w-ch1-limesdr-usb/4153/1 "2019-02-09T00:25:13Z")

</div>

Hello,

I have an issue with my LimeSDR USB since I received it. The basic LimeQuickTest program fails the test TX\_1 -\> LNA\_W (CH1) :

```
[TESTING STARTED]
->Start time: Sat Feb 2 00:13:13 2019

->Device: LimeSDR-USB, media=USB 3.0, module=FX3, addr=1d50:6108, serial=00090726XXXXXXXX
  Serial Number: 00090726XXXXXXXX

[Clock Network Test]
->FX3 GPIF clock test
  Test results: 65211; 3431; 7187 - PASSED
->Si5351C test
  CLK0: 17554 / 17554 - PASSED
  CLK1: 17554 / 17554 - PASSED
  CLK2: 17554 / 17554 - PASSED
  CLK3: 17554 / 17554 - PASSED
  CLK4: 17554 / 17554 - PASSED
  CLK5: 17554 / 17554 - PASSED
  CLK6: 17554 / 17554 - PASSED
->ADF4002 Test
  Result: 10 - PASSED
->VCTCXO test
  Results : 5112947 (min); 5113081 (max) - PASSED
->Clock Network Test PASSED

[FPGA EEPROM Test]
->Read EEPROM
->Read data: 12 07 19 12 07 19 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_L):
  CH0 (SXR=800.0MHz, SXT=805.0MHz): Result:(-16.9 dBFS, 5.00 MHz) - PASSED
  CH1 (SXR=800.0MHz, SXT=805.0MHz): Result:(-18.1 dBFS, 5.00 MHz) - PASSED
->Run Tests (TX_1 -> LNA_W):
  CH0 (SXR=1800.0MHz, SXT=1805.0MHz): Result:(-18.3 dBFS, 5.00 MHz) - PASSED
  CH1 (SXR=1800.0MHz, SXT=1805.0MHz): Result:(-24.6 dBFS, 5.00 MHz) - FAILED
->Run Tests (TX_2-> LNA_H):
  CH0 (SXR=2500.0MHz, SXT=2505.0MHz): Result:(-17.9 dBFS, 5.00 MHz) - PASSED
  CH1 (SXR=2500.0MHz, SXT=2505.0MHz): Result:(-16.6 dBFS, 5.00 MHz) - PASSED
->RF Loopback Test FAILED

=> Board tests FAILED <=

Elapsed time: 2.54 seconds

```

So far I’ve tested many different configurations to try to solve the issue :

- different computers (Windows, Linux, or even VM Ubuntu)
- USB 3 and USB 2 ports
- with and without enclosure
- swap antennas
- firmware downgrading

But the problem persists anyway.

The TX\_1 level seems really low, I think there’s a hardware defect.

@andrewback , @Zack , could you please advise ?

Thank you

Regards,  
Fred

---

<div class="post-metadata">

**Author:** ![zeewox](https://avatars.discourse-cdn.com/v4/letter/z/a5b964/32.png) [@zeewox](https://discourse.myriadrf.org/u/zeewox)\
**Post date:** [12 February 2019 21:36 UTC](https://discourse.myriadrf.org/t/limequicktest-fails-on-tx-1-lna-w-ch1-limesdr-usb/4153/2 "2019-02-12T21:36:08Z")

</div>

Hello @andrewback

my board is unusable, could you please provide support for RMA ?

Thank you  
Regards,  
Fred

---

<div class="post-metadata">

**Author:** ![andrewback](https://avatars.discourse-cdn.com/v4/letter/a/22d042/32.png) [@andrewback](https://discourse.myriadrf.org/u/andrewback)\
**Post date:** [14 February 2019 08:19 UTC](https://discourse.myriadrf.org/t/limequicktest-fails-on-tx-1-lna-w-ch1-limesdr-usb/4153/3 "2019-02-14T08:19:39Z")

</div>

@Zack can you please diagnose and advise whether an RMA is in order.

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<div class="post-metadata">

**Author:** ![hades](https://avatars.discourse-cdn.com/v4/letter/h/ba8739/32.png) [@hades](https://discourse.myriadrf.org/u/hades)\
**Post date:** [11 January 2020 19:31 UTC](https://discourse.myriadrf.org/t/limequicktest-fails-on-tx-1-lna-w-ch1-limesdr-usb/4153/4 "2020-01-11T19:31:20Z")

</div>

Hi @zeewox,  
Did you get any updates? I got the same issue as you did.

Bin