DRA725: QNX: how to implement USB eye diagram on QNX OS

Fredy Zhang

Expert 4690 points

Part Number: DRA725

Dear expert:

I encountered an issue on USB, so need to test the eye diagram?

Pls help to check how to test the eye diagram on QNX system ? What setting should I do on QNX system ?

Regards,

Fredy Zhang

8 months ago

0 Tanmay Patil 8 months ago

TI__Mastermind 27130 points

Hi Fredy,

Do you mean the eye diagrams for the USB lines? The one we get on oscilloscope? Those are OS agnostic and you need to probe the physical lines for this.

If I am misunderstanding things, can you please clarify what you are looking for?

Regards,
Tanmay

0 Fredy Zhang 8 months ago in reply to Tanmay Patil

TI__Expert 4690 points

Hi, Tanmay,

It same as below link. Pls help to check below case. I want to check how to set on QNX side for eye diagram testing? Thanks.

https://e2e.ti.com/support/processors-group/processors---internal/f/processors---internal-forum/1224601/dra742-script-for-usb-eye-diagram-testing/4626218?tisearch=e2e-sitesearch&keymatch=USB%2520diagram#4626218

Regards,

Fredy Zhang

0 Praveen Rao 8 months ago in reply to Fredy Zhang

TI__Mastermind 32701 points

Hello Fredy Zhang,

For doing it on QNX OS, suggest contacting Blackberry QNX for support.

Thanks.

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DRA725: QNX: how to implement USB eye diagram on QNX OS