Re: about BLE Rx test


Stephanos Io <assembler@...>
 

Hi,

 

I suppose you are performing RX sensitivity test.

 

> If RF equipment send a dbm above -86 (ex: -85 , -84 , -83 …..), the error message will disappear.

 

Assuming you are testing with BLE 2Mbps PHY, I think this behaviour is only to be expected given that the max. sensitivity is specified at -85 dBm at 2Mbps for nRF51824 (refer to the datasheet).

 

Stephanos

 

From: devel@... <devel@...> On Behalf Of Cufi, Carles
Sent: Tuesday, November 12, 2019 10:38 PM
To: Tommy.Lin@...; zephyr-devel@...
Cc: devel@...; Chettimada, Vinayak Kariappa <vinayak.kariappa.chettimada@...>
Subject: Re: [Zephyr-devel] about BLE Rx test

 

Adding Vinayak.

 

If this depends on the dBm setting it might be a bug actually. I’ll let Vinayak weigh in.

 

Carles

 

 

From: devel@... <devel@...> On Behalf Of Tommy Lin (???) via Lists.Zephyrproject.Org
Sent: 12 November 2019 13:01
To: zephyr-devel@...
Cc: devel@...
Subject: Re: [Zephyr-devel] about BLE Rx test

 

+ jimmy

 

From: Tommy Lin (林志聰)
Sent: Tuesday, November 12, 2019 7:18 PM
To: 'zephyr-devel@...' <zephyr-devel@...>
Cc: Isaac Chen (
陳尚航) <Isaac_Chen@...>; Ryan Hsu (徐振鋒) <Ryan.Hsu@...>; Brent Tsai (蔡旻其) <Brent.Tsai@...>; 'Hanyu.Hsu@...' <Hanyu.Hsu@...>
Subject: RE: about BLE Rx test

 

Hi ,

Sorry , correction.

 

We have a product using nRF51824 with Zephyr v1.13.0.

Our DUT connect with RF equipment.

 

[Test sequence]

Step1: DUT enter Rx mode with HCI command.

Step2: RF equipment send 1500 bytes with -86dbm.

Step3: DUT end Rx mode

After then , DUT will show “tx time out “ error message.

 

 

PS:

  1. If RF equipment send a dbm above -86 (ex: -85 , -84 , -83 …..), the error message will disappear.
  2. We use Zephyr v1.13.0 and v1.14.0 , and the result is the same.

 

Could you give us some suggestions?

 

Thank You,

Tommy

 

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