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  • Resolved

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

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.

  • 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
  • In reply to José Luis:

    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.

  • In reply to Tom Panian:

    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
  • In reply to José Luis:

    Hello Jose. Sorry, I was out of the office on Friday. I accepted your friend request.
  • In reply to Tom Panian:

    The configuration file for the laser was sent by email.

    Best Regards
    José Luis Figueroa
    Audio Applications Engineer
  • In reply to José Luis:

    That did the trick! Thanks

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