DLP3010EVM-LC: Projection when Exposure Time is extended

Hi Tak,

I will look into the issue and get back to you soon.

Regards,

Mayank

Hi
Mayank,

Thank you for continuing to investigate my question.

First of all, about my evaluation result, from the input of "Trigger In"
Time until "Trigger Out 2" is asserted
It means that it was not the timing to set "Pre Dark Time".

As a result, the first 4 points were “OK”.
However, "??" did not reach the timing when "Pre Dark Time" was set.
It means that.

I made some mistakes in the table and fixed it.
Please see the table below.
I also added a timing diagram at that time.

Also, the assertion time of "Trigger Out 2" that you asked
Regarding "Exposure Time", I have the same idea.

However, when "Exposure Time" is set to 2 seconds, the assertion time of "Trigger Out 2" is
It was about 1.8 seconds. I haven't looked into this rating yet.
Because one of the causes is doubtful about the result I found.

Therefore, regarding the “Pre Dark Time” that I asked,
And I would like to ask you to continue investigating the assertion time of "Trigger Out 2" that you asked.

I believe you can use my question as a hint to solve this problem.

Thanks and regards,

Tak

Tak,

Thanks for the feedback, I will get back to you soon.

Regards,

Mayank

Hi
Mayank,

Is the solution advanced?

Regards,

Tak

Tak,

I was not able to make much progress on this query due to the current COVID-19 pandemic as it requires me to go to the office. I will try to address your queries as soon as possible but there might be slight delays involved.

Your patience is appreciated. I will get back to you soon.

Regards,

Mayank 

Hi
Mayank,

I understand the reason behind the delay due to COVID-19.

However, our hardware design is
In the design that already uses Internal Pattern Mode (Trigger In Mode)
The project is in progress.
I have some time to wait until the hardware is completed,
By then the project is under way with the promise that these issues will definitely be resolved.

Please contact me immediately if there is any change in the plan to be resolved.
Also, pray that your area is safe due to COVID-19 issues.

Regards,

Tak

Hi Tak,

Yes, I will keep you updated with the progress and will try to get back to you soon with my findings.

Regards,

Mayank

Hello Tak,

Thank you for your patience. Our team has been very busy with few critical deliverable. It is taking longer than initially we anticipated.

regards,

Vivek

Hello
Vivek and Mayank,

Thank u very much for contacting me.

I understand that your team is very busy.
If you can solve the problem early
I want to fix the firmware.

But there is still time to wait.
We appreciate your efforts to resolve this issue.
Please contact me immediately if there is any change in the plan to be resolved.
Our team waits in anticipation.
Also, pray that ur area is safe due to COVID-19 issues.

Regards,

Tak

Hi Tak,

We very much appreciate your kind patience. We are continuing to look into this for you.

Regards,

Austin

Hello

Vivek,Austin and Mayank,

I read your answer.
Thank you for contacting us.

Let me check it again.

The requirements for our projection time are as follows.

using 1D  range of exposure → 8333us~2.0s
Projection method → ​​Internal Pattern Mode, Illumination…R

I heard from Mayank that the projection time of 2.0s is possible with "Trigger In Mode".
The projection time actually increased.
Therefore, a project is currently underway with a design using this "Trigger In Mode".

And depending on your answer
Exposure range when using "Trigger In Mode"
Please answer the following questions.

1. Please tell me the range of exposure that can work normally with the current firmware.

2. Please tell me the range of exposure that will work normally with the firmware that will be improved later.

3. Please tell us the next version of the firmware that will be improved later.

4. Other... Projects "Splash Pattern Mode, Illumination...R".
Please tell me the range of exposure that operates normally in this mode.

Regards,

Tak

Tak,

The release notes of the firmware will give you all the ranges of exposure time that are supported for different pattern streaming mode. You can download the firmware installer from here - https://www.ti.com/tool/DLP3010EVM-LC 

Unfortunately,  pattern display with longer exposure times outside the specified range will operate with decreased timing accuracy and the system behaviour is not guaranteed in such cases. 

We are evaluating your requirement for pattern display with larger exposure times and may add this feature in the future firmware release. 

I made a mistake in my reply to your previous thread where I suggested that Trigger In mode can be used for pattern display with larger exposure times, I apologies for the same. I will go ahead and correct my response to that thread.

Regards,

Mayank

Hello

First of all, regarding the content of the previous question,
There is an error in the requested projection range value
Corrected the posted content.
The correct value is 8333us~2.0s

And I read the release notes.

But isn't the projection range too narrow?
I don't understand how to read this table.
It looks like a mistake about the maximum projection range of the table.

And I haven't answered the four questions from the previous question.
Please fill in and answer each of these four questions with the correct numbers.

Regards,

Tak

Mayank,

For your current answers,
Our team is constantly studying.
But I can't solve it.

At least about the exposure range of 8bit Monochrome,
There is a possibility that it can be solved if there is firmware that can accept 20 ms.......

Our development project already has a final user.
We are really in trouble now.

Regards,

Tak