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Original question:

DLPNIRNANOEVM: NIRscanNano dead after few weeks

DLPNIRNANOEVM: New NIRScanNano unable to scan

Simon Ilgenfritz
Prodigy 230 points
Part Number: DLPNIRNANOEVM
Other Parts Discussed in Thread: DLPC150

Hello E2E team,

as I already told you in another thread, two of the NIRScanNano devices I use didn't work any more after short time.

I wanted to replace them and ordered two new devices. Having unboxed them, I did a DLPC150 and a TIVA firmware update as usual. Then I tried to start a scan. One of the sensors is able to scan as supposed. The other sensor doesn't scan. In the DLP NIRScanNanoGUI v2.1.0 a message box "Scan failed" occurs. In the background where you can usually see the plot, a message "Scan data read from device failed" is shown.

I'm surprised - I proceeded exactly this way 13 times before with the other sensors I use. It always worked without any problems.

Do you have any idea what might be the problem with the sensor?

Thanks & regards,

Simon

  • 0
    TI__Mastermind 22830 points

    Hello Simon,

    I am sorry to hear that you facing the problem. I just want to reconfirm that these are two different units. Not the same one being discussed in other thread.

    Could you please upload screen capture of GUI and CSC fie for a sample scan?

    regards,

    Vivek

  • 0 in reply to Vivek Thakur
    Prodigy 230 points

    Hello Vivek,

    in fact these are different units with different behaviors. Below you can find the required screenshot. This unit can be accessed by GUI and the green LED D3 blinks. The other two defective units (thread: DLPNIRNANOEVM: NIRscanNano dead after few weeks.) can't be accessed by GUI and LED D3 doesn't blink.

    Sorry, could you please explain what you exactly mean with "CSC fie"?

    Regards,

    Simon

  • 0 in reply to Simon Ilgenfritz
    TI__Mastermind 22830 points

    Hello Simon,

    Thank you for uploading the screen shot. This confirms communication between  GUI and EVM.

    I am sorry, I meant CSV file, the scan capture data in txt format.

    regards,

    Vivek

  • 0 in reply to Vivek Thakur
    Prodigy 230 points

    Hello Vivek,

    I had a look into the file directory: As the scan fails, no csv and dat files are created.

    Regards,

    Simon

  • 0 in reply to Simon Ilgenfritz
    TI__Mastermind 22830 points

    Hello Simon,

    Thank you. I am on vacation and will get back to you this issue early next week.

    regards,

    Vivek

  • 0 in reply to Vivek Thakur
    TI__Mastermind 22830 points

    Hello Simon,

    Thank you for your patience. 

    Could you please run the following test :

    1. Please click on the "information" tab  of GUI and check if GUI is reporting the version number for TIVA SW, GUI SW and DLPC flash. Please share the reported number.

    2. Click on "utility" tab

    a. read sensor value by clicking on "read" button under sensors.

    b. read battery charger by clicking on "read"

    Please take screen shot and upload.

    regards,

    Vivek

  • 0 in reply to Vivek Thakur
    Prodigy 230 points

    Hello Vivek,

    enclosed you can see the results of the required tests.

    For your information: When I get new sensors, I first do a TIVA and DLPC update. So all 14 sensors I am currently testing use the same software versions.

    Regards,

    Simon

  • 0 in reply to Simon Ilgenfritz
    TI__Mastermind 22830 points

    Hello Simon,

    Thank you for uploading the information. I will get back to you in couple of days with further follow-up.

    regards,

    Vivek

  • 0 in reply to Vivek Thakur
    TI__Mastermind 22830 points

    Hello Simon,

    GUI is able to read the sensor information. This confirm that TIVA is working fine. Likely case could be that DLPC150 is in bad state.

    Could you please download a new copy of DLCP150 firmware from website and update? See if this resolves the issues.

    regards,

    Vivek

  • 0 in reply to Vivek Thakur
    Prodigy 230 points

    Hello Vivek,

    in order to get more information, I surveilled the voltage and the current on the USB plug on the NIRScanNano's side of the cable. And I had to recognize that the voltage falls when I start the scan because the lamps take about 0,4 amps. This is the point of time when the message "Scan failed" appears.

    The problem seems to be the USB port of the PC which I used to test the NIRScanNano. As the ports are internally connected with each other, the other ports seem to have the same problem. So it didn't help to change the port. When I tested the other NIRScanNanos in the past, the USB ports of my PC didn't make any problems, now they do. So I have to replace the ports, they don't work properly any more. When I use an active hub for example, the sensor works fine.

    Maybe it would be possible to surveil this event in a future firmware and to create a corresponding message. When a scan is started and the sensor doesn't react any more, something with the power supply might be wrong. Such a message would have helped us to find the problem much faster.

    Vivek, thank you for your support!

    Best regards,

    Simon