topic about KW45 Freq Range in Wireless MCU

about KW45 Freq Range

Annie_he — Thu, 25 Apr 2024 08:49:00 GMT

Hi NXP,

We will use KW45 blurtooth board to get certification SRRC.

But now when we test Frequency Range and Found that is is out of the lower limit, which is requested Less than -30dBm/100Khz, and its requested Frenquency is more than 2400Mhz, when operating in 2402Mhz.

And We test result as below:

1M(when power=-30.120, its freq error=2.400971GHz>2.4GHz, pass and The margin is sufficient)

2M(when power=-30.03, its freq error=2.400015GHz>2.4GHz, pass and The margin is no more margin)

If You have any Ideas to fix this issue in 2M TEST? It may cause us fail in the certification. If you have any ideas, please let us know, thanks.

Best Regards,

Annie

Re: about KW45 Freq Range

nxf77486 — Thu, 25 Apr 2024 22:21:40 GMT

Hello,

Thank you for contacting NXP support.

Can you please help me with the following information:

Are you using an EVK or this is a custom board?
Are you using any example from the SDK?

What SDK version are you currently using
What MCUXpresso version
If you are using an SDK example did you perform any changes on the example?

Please let me know this information.

Re: about KW45 Freq Range

Annie_he — Fri, 26 Apr 2024 03:24:52 GMT

Hi,

We using custom boards

SDK version: SDK_2_12_5_KW45B41Z-EVK

MCUXpresso version: 11.8.0_1165

FW: connctivity_test

and We set XtalTrim=26 in SDK example as below:

hope your support, thanks

Best Regards,

Annie

Re: about KW45 Freq Range

nxf77486 — Thu, 02 May 2024 22:06:46 GMT

Hello,

Thank you in advance for the response. I will comment this query with our internal team, as we do not have many information regarding the Power certifications. I will be back with some information.