# Errors

**URL:** <https://discourse.myriadrf.org/t/errors/2410>\
**Category:** LimeSDR\
**Created:** [1 March 2018 02:35 UTC](https://discourse.myriadrf.org/t/errors/2410 "2018-03-01T02:35:59Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![shenlung](https://avatars.discourse-cdn.com/v4/letter/s/8dc957/32.png) [@shenlung](https://discourse.myriadrf.org/u/shenlung)\
**Post date:** [1 March 2018 02:35 UTC](https://discourse.myriadrf.org/t/errors/2410/1 "2018-03-01T02:35:59Z")

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When following getting started when open the self\_test.ini:  
[02:15:15] INFO: Connected Control port: LimeSDR-USB FW:4 HW:4 Protocol:1 GW:2.12 Ref Clk: 30.72 MHz  
[02:15:20] ERROR: SetFrequencyCGEN(15.36 MHz) failed

when trying to calibrate with: LimeUtil --cal --start=1.0e9 --stop=2.0e9

Reference clock 30.72 MHz  
LMS7002M cache /root/.limesuite/LMS7002M\_cache\_values.db  
Cal sweep over [1000, 2000, 1] MHz, channels=ALL, dir=BOTH  
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@  
@@ Calibrating for freq = 1000 MHz  
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

SetFrequency using cache values vco:1, csw:56  
GetDC\_IQ(1000 MHz, ch=0, tx=0): cannot find match  
MCU error code(3): SXR tune failed  
Error calibrating (skipping): MCU error code(3): SXR tune failed  
SetFrequency using cache values vco:1, csw:56  
GetDC\_IQ(1000 MHz, ch=1, tx=0): cannot find match  
MCU error code(3): SXR tune failed  
Error calibrating (skipping): MCU error code(3): SXR tune failed  
SetFrequency using cache values vco:0, csw:51  
GetDC\_IQ(1000 MHz, ch=0, tx=1): cannot find match  
MCU error code(5): Loopback signal weak: not connected/insufficient gain?  
Error calibrating (skipping): MCU error code(5): Loopback signal weak: not connected/insuffici

I tried setting default values in the gui and loading to chip, Same problem.

So not sure where to go next, brand new unit. I just got it a week or so ago,

Thx

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**Author:** ![andrewback](https://avatars.discourse-cdn.com/v4/letter/a/22d042/32.png) [@andrewback](https://discourse.myriadrf.org/u/andrewback)\
**Post date:** [1 March 2018 11:16 UTC](https://discourse.myriadrf.org/t/errors/2410/2 "2018-03-01T11:16:30Z")

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> [@shenlung](#):
>
> when trying to calibrate with: LimeUtil --cal --start=1.0e9 --stop=2.0e9

I think this is deprecated. Calibration is now automatic and done on the fly.

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**Author:** ![KAKAKs](https://avatars.discourse-cdn.com/v4/letter/k/b782af/32.png) [@KAKAKs](https://discourse.myriadrf.org/u/KAKAKs)\
**Post date:** [19 April 2018 14:36 UTC](https://discourse.myriadrf.org/t/errors/2410/3 "2018-04-19T14:36:34Z")

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Hi When start LimeSDR with GNUradio have same issue.