DLPNIRSCANEVM: Scan Error

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

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

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

HI Vivek, 

OK. I'm looking forward to your reply.

Have a nice holiday!

regards,

Takashiii

Thanks you.

Have a nice holiday.

regards,

Vivek

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

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

Takashii-san,

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

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

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

Hi Sreeram,

I want to know the time change of the spectrum.

For that, it is necessary to measure the spectrum continuously with DLP NIRscan EVM.

So, I think  increasing the "Number of the scans to average" is not acceptable for my purpose. 

Regards, 

Takashiii

Hi Takashiii-san,

Do you have the ability to modify files in Sitara/ARM file system? If so, I can show you where to make changes for the purpose of your experiment.

When you click the run button, a script is being generated and run on the linux shell. We can modify that script itself to run it in a loop instead of running the scan command once.

Regards,

Sreeram

HI Sreeram,

Sorry, I don't have the ability to modify files in Sitara/ARM file system...

Is it difficult?  What do I need to modify files in Sitara/ARM file system?

Regards,

Takashiii

Hi Takashiii-san,

You need to install the AM335x Sitara ARM SDK from in order to get to the file system. If you haven't used Linux before, this can be difficult.

Hi Takashiii-san,

Another suggestion I have is to try changing the "scan name" each time before hitting the "perform scan" button. That might avoid any conflicts with file access.

Regards,

Sreeram

Hi Sreeram,

I've never used Linux...
I will try to find someone who is familiar with Linux around me.

OK. I will try your another suggestion.

Regards,

Takashiii

Hi Sreeram,

I tried changing the "scan name" each time before hitting the "perform scan" button.

However, A similar error had occurred...

When I checked the network tab in Chrome verification during scanning , it became the following screen.

As this screen shows, the 304 status code (Not Modified) is returned repeatedly.

In this state, measurements doesn't end.

Regards,

Takashiii

Hello Takashiii-san,

We will get back to you  in first week of January.  This  is a holiday period for our team.

Thanks for your patience.

regards,

Vivek

Hello Vivek,

Happy New Year !

Did your team find the cause and solution for the measurement error?

I 'm looking forward to your reply.

Best regards,

Takashiii

Hello Takashiii-san,

Thank you for your patient. Our team member familiar with this product will get back to in couple of days.

regards,

Vivek