WL1837MOD: Failing spurious emission test at China SRRC tests - Need to know if CH13 of 2.4GHz can be disabled permanently.

Gunaseelan Murugan

Part Number: WL1837MOD

Dear TI Team,

We are performing wireless test on our product for China market. When continuous Tx is enabled in 2.4GHz C13, the side band is above the limit at 2483.5MHz in 802.11g and 802.11n protocols.

It is not possible to suppress the side band. The power of CH13 has been already set to 00 using the .ini file. But this is not helping.

Is it possible to permanently disable CH13?

Best regards,

Guna

over 1 year ago

0 Jessica M. Torres over 1 year ago

TI__Expert 6580 points

Hi Guna,

I would recommend looking into changing the country code. The INI file will not be able to fully disable the power of certain channel, just roll back the power.

Do note that our WL18xxMOD do NOT have China certification, as such we do not provide certification support.

BR,

Jessica M. Torres

0 Gunaseelan Murugan over 1 year ago in reply to Jessica M. Torres

Prodigy 10 points

Hi Jessica,

Changing country code is not acceptable as some countries(FCC for example that blocks ch12 and 13) allow higher power in 2.4GHz band when compared to China.

Best regards,

Guna

0 Jessica M. Torres over 1 year ago in reply to Gunaseelan Murugan

TI__Expert 6580 points

Hi Guna,

Could you not use a different country code to fully block ch13, then lower the TX power with the INI file?

BR,

JMT

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WL1837MOD: Failing spurious emission test at China SRRC tests - Need to know if CH13 of 2.4GHz can be disabled permanently.