TAS2555: Laser input not seen by PPC3 when determining Bl of speaker

Tom Panian

Part Number: TAS2555

I am using PPC3 with LB2 connected to TAS2555YZEVM. I perform the hardware checks and do a speaker fit test. No problems. However when I run the speaker excursion test to determine Bl, I get a fit error. The displacement curve is not seen or displayed.

I have checked the excursion signal at the BNC connector with a scope and it looks fine. The EVM is not seeing signal.

over 5 years ago

0 José Luis over 5 years ago

TI__Mastermind 20085 points

Hi Tom,

Welcome to E2E, thanks for your interest in our products.
Could you send me a picture where the error is shown? and Are you using a laser to measure the BL?

Best Regards
José Luis Figueroa
Audio Applications Engineer

0 Tom Panian over 5 years ago in reply to José Luis

Intellectual 295 points

Hello Jose.

Thanks for replying.

I am using the Keyence LK-H057 laser, set for 10V/mm. I can see the signal at the BNC connector. But I get this error message after running the test.

0 José Luis over 5 years ago in reply to Tom Panian

TI__Mastermind 20085 points

Hi Tom,

I want to provide you a configuration file for the laser. I sent you a message, so could you please answer me?

Best Regards
José Luis Figueroa
Audio Application Engineer

0 Tom Panian over 5 years ago in reply to José Luis

Intellectual 295 points

Hello Jose. Sorry, I was out of the office on Friday. I accepted your friend request.

0 José Luis over 5 years ago in reply to Tom Panian

TI__Mastermind 20085 points

The configuration file for the laser was sent by email.

Best Regards
José Luis Figueroa
Audio Applications Engineer

0 Tom Panian over 5 years ago in reply to José Luis

Intellectual 295 points

That did the trick! Thanks

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TAS2555: Laser input not seen by PPC3 when determining Bl of speaker