Need help with LMS7002 TX spectrum

[xin]

Hi

   I am currently working with the LMS7002M and here is the spectrum of the TX output, I was wondering why the background noise is upraised. Could you tell me what caused this phenomenon and what can i do to improve the quality of the signal?Thanks.

Regards,

xin

[r.vad...@limemicro.com]

Hello Xin,

Please share your ‎register setup.

What frequency you want to set your transmitter? Have you calibrated TxPLL (press Tune button after calculate)?

Best Regards,
Ricardas Vadoklis

From: xin Sent: Sunday, 15 November 2015 06:07 To: Lime Microsystems open-source support channel Reply To: limemicro-...@googlegroups.com Subject: Need help with LMS7002 TX spectrum

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[xin]

Hello Ricardas,

Thanks for your reply.

Here is the register setup file, the wanted frequency is 2142 MHz and the LO is 2140 MHz. I have already calibrated the TxPLL but it's no use for this phenomenon.

Is this caused by the LimeLight digital interface or by the TSP module,or other modules ?

Thank you !

Best regards.

Xin

在 2015年11月16日星期一 UTC+8上午12:06:57，r.vad...@limemicro.com写道：

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