DLPNIRSCANEVM: Scan Error

Prodigy 100 points

Replies: 20

Views: 302

Part Number: DLPNIRSCANEVM

Hello.

I'm trying to make continuous measurements with DLP NIRscan EVM.

However, when measuring continuously by repeatedly pressing "Run New Scan" button, an error often occurs and measurement becomes impossible.

The logfile when the error occurs is shown below.

In this state, the measurement cannot be resumed unless the power of DLP NIRscan EVM is turned off once.

Why does it happen and how can I perform stable continuous measurement without error?

I'm using NIRscan SW(version 2.0) and DLPC350 Firmware(Version 2.0.0).

Regards,

Takashiii

20 Replies

  • Hello Takashiii-san,

    Welcome to DLP forum and thank you for interest in DLP technology.

    Could you please upload the screen capture of GUI? 

    regards,

    VIvek

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  • In reply to Vivek Thakur:

    Hi Vlvek,

    Thank you for your reply.

    Excuse me, may I ask you a question about GUI you write in your reply?

    What does GUI mean?

    Is it  about "Matrix Application Launcher", controlling DLP NIRscan EVM via Web browser?

    I don't understand what screen capture to upload.

    regards,

    Takashiii

  • In reply to Takashiii:

    Hello Takashiii,

    I am sorry, I misinterpreted for the NIRScan Nano EVM. 

    The DLPNIRScan EVM is a very old design and our team has very limited knowledge on it. I need to seek help from folks who may have worked on it in the past.

    Now due to holiday time, I may  have an answer  after the week of 4 Jan.

    Thank you for your patience.

    regards,

    Vivek

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    If a post answers your question, please click the "Verify Answer" button.

    Have questions about DLP Pico Chipsets? Check out the DLP Pico Universal FAQ for quick answers: https://e2e.ti.com/support/dlp/f/94/t/946506 

  • In reply to Vivek Thakur:

    HI Vivek, 

    OK. I'm looking forward to your reply.

    Have a nice holiday!

    regards,

    Takashiii

  • In reply to Takashiii:

    Thanks you.

    Have a nice holiday.

    regards,

    Vivek

    --------------------------------------------------------------------------------------------------------

    If a post answers your question, please click the "Verify Answer" button.

    Have questions about DLP Pico Chipsets? Check out the DLP Pico Universal FAQ for quick answers: https://e2e.ti.com/support/dlp/f/94/t/946506 

  • Hello Takashiii-san,

    It appears to me that this error is happening because a second scan is initiated before the first one is complete. Would it be possible for you to try inserting a delay between the repeated "Run New Scan" commands?

    Also, may I know what is the purpose behind repeated "Run New Scan" commands? The web interface provides an option to specify "Number of scans to average". It would be better to increase that number in order to perform multiple scans and average the results.

    Best Regards,

    Sreeram

  • In reply to Sreeram Subramanian:

    Hello Sreeram,

    I see.
    I will try to insert the waiting time between the repeated "Run New Scan" commands.

    My purpose is to get time series data of the spectrum by repeating the measurement.
    I use Selenium (a portable framework for testing web applications) to operate automatically the web interface(DLP NIRscan browser).
    I want to prevent errors during measurement in order to get time series data.

    Best Regards,

    Takashiii

  • In reply to Takashiii:

    Takashii-san,

    Thank you. Please let us know if this resolves the issue.

    --------------------------------------------------------------------------------------------------------

    If a post answers your question, please click the "Verify Answer" button.

    Have questions about DLP Pico Chipsets? Check out the DLP Pico Universal FAQ for quick answers: https://e2e.ti.com/support/dlp/f/94/t/946506 

  • In reply to Vivek Thakur:

    Hello Vivek,

    I tried inserting a waiting time , which was about three times time from pushing "Run New Scan" button until the graph of the measured spectrum was output,  between the repeated "Run New Scan" commands.

    However, after several measurements, the measurement does not end with the screen shown in the image below.

    In this state, measurement cannot be performed unless the power is turned off once.

    Regards,

    Takashiii

  • In reply to Takashiii:

    Hi Takshiii-san,

    May I know why increasing the "Number of scans to average" will not be acceptable for what you are trying to achieve?

    Regards,

    Sreeram