Linux/WILINK-BT_WIFI-WIRELESS_TOOLS: URGENT CERTIFICATION: WL1273 How to disable 2,4 ghz channels ?

user5135954

Part Number: WILINK-BT_WIFI-WIRELESS_TOOLS

Tool/software: Linux

Hi,

By conception, our product only uses the 5ghz band only and in station mode. The product certification is performed only on the 5ghz band.

How can we make sure all RF activity on the 2,4 ghz band is disabled ? Currently, the 2,4 ghz signals are considered as spurious and we are failing the certification.

The test house is detecting beacon tramsmissions in the 2,4ghz band in B mode while the device is in idle.

Help would be greatly appriciated as we running out of time and we may failed the certification.

Thanks,

over 7 years ago

0 dale over 7 years ago

TI__Expert 6335 points

We have assigned your post to an expert and will get back to you shortly.

0 Hari Nagalla over 7 years ago in reply to dale

TI__Mastermind 27080 points

How are you putting the device for certification testing? If, you are using with Linux host, you can use 'calibrator' as described in:
processors.wiki.ti.com/.../WL18xx_TX_Testing

Thanks

0 user5135954 over 7 years ago in reply to Hari Nagalla

Prodigy 30 points

This certification test requires the device to be in normal use. For this test we cannot use the calibrator tool.

In normal use, the tiwi5 and Linux host scan the bands to detect the surrouding APs. While scanning the tiwi5 emits beacon on the 2.4ghz and 5ghz bands. How can I disable the 2.4ghz band to limit the scanning to the 5ghz band ?

0 Hari Nagalla over 7 years ago in reply to user5135954

TI__Mastermind 27080 points

Talking with the systems expert, it seems you can't disable 2.4 ghz entirely..

Thanks

0 user5135954 over 7 years ago in reply to Hari Nagalla

Prodigy 30 points

Hi,

Thanks for your answer, it seems there is a way to do it, I am sharing the solution found to the community:

- Delete the lines 2,4ghz in the regdb.txt regarding the domain tested in the CRDA module

- regenerate the regulatory.bin

- install the new regulatory.bin in your rootfs

By doing that the kernel does not allow the chip to use 2,4ghz band and the associated beacons.

Wi-Fi

Wi-Fi forum

Linux/WILINK-BT_WIFI-WIRELESS_TOOLS: URGENT CERTIFICATION: WL1273 How to disable 2,4 ghz channels ?