ADS52J90EVM + TSW14J56EVM trigger operation

Paul Smith

Other Parts Discussed in Thread: ADS52J90

I have these 2 eval boards and have them working with the "High Speed Data Converter Pro GUI" software. I would like to use an external trigger to capture data and write the data to a file.

The SLWU087C (revised July 2015) User's Guide describes how to use the external trigger. But, once the external trigger happens you have to click on a GUI "Read DDR Memory" button to get the data into the software. Then you have to use the File menu to save the data to a file.

There is a continuous capture option, but it isn't at all clear if it will work with the external trigger option?

Is there a way to use the eval boards & software as a triggered data acquisition system?

over 7 years ago

0 Amy Schnoor over 7 years ago

TI__Mastermind 18275 points

Paul,

I'm assigning your post to the correct applications engineer. He should respond soon.

0 Chuck Smyth over 7 years ago

TI__Expert 6320 points

Paul,

In the trigger menu of HSDCPro, you can choose the "arm on next capture button press". This is probably the trigger you want. Unfortunately, we have never enabled the ability to trigger and do continuous capture at the same time. It is one or the other. We are working on that feature. However, included in the HSDCPro installer are tools to send commands, such as "Capture" to HSDCPro via Matlab or Labview.

Chuck

0 Paul Smith over 7 years ago in reply to Chuck Smyth

Prodigy 250 points

Thanks for the quick reply, Chuck. What is your time scale for implementing the ability to trigger and do continuous capture?

0 Chuck Smyth over 7 years ago in reply to Paul Smith

TI__Expert 6320 points

Paul,

It will probably me another month at least before it is in the HSDCPro installer. I will bring it up at the next meeting and try to get it pushed up.

Chuck

0 Paul Smith over 7 years ago in reply to Chuck Smyth

Prodigy 250 points

A month would be great. I'm sure other users of the ADS52J90 would find this feature useful as well. That is how we plan to use the part on our board. We would like to use that mode with the eval board while designing our board. If necessary we can use the Matlab/Labview interface you mention, but having the HSDCPro do it directly would be much cleaner and faster.

0 Paul Smith over 7 years ago in reply to Paul Smith

Prodigy 250 points

Any progress on getting the external trigger working with continuous capture on the EVAL boards?

Paul

0 Paul Smith over 7 years ago in reply to Chuck Smyth

Prodigy 250 points

Chuck,

So, it has been 4 months now. Any progress?

Paul

0 Lijoy Philipose over 7 years ago in reply to Paul Smith

TI__Intellectual 1315 points

Hi Paul,

The external trigger feature will not be added in the short term.

0 Paul Smith over 7 years ago in reply to Lijoy Philipose

Prodigy 250 points

Now I'm even more confused. There is a Trigger input on the TSW14J56EVM; are you saying this input doesn't work?

0 Chuck Smyth over 7 years ago in reply to Paul Smith

TI__Expert 6320 points

Paul,

There is no issue with the trigger function or the continuous capture function, but there is still no progress on the triggering + continuous capture function. I have included the software team on this thread, so that they might update us on the progress and schedule of this function.
They might be able to include this on the next release.

Chuck Smyth

0 Chuck Smyth over 7 years ago in reply to Chuck Smyth

TI__Expert 6320 points

Paul,

Do you have access to Labview or Matlab? This might be the better method of continuous (repeated) triggering if you are trying to simulate a real system.

Thanks,

Chuck Smyth

0 Paul Smith over 7 years ago in reply to Chuck Smyth

Prodigy 250 points

Chuck,

Yes, we have access to both Labview and Matlab. This will get us going, although we expect this to be very slow. We do need to use the hardware trigger input in order to have deterministic timing of the trigger. I guess we can use Labview or Matlab to read the data and arm for the next trigger?

We were hoping for the TI HSDC software to have the capability to use the hardware trigger and capture continuously to a file, if you look back in this thread you can see we discussed this capability last summer when you thought it might be available on a month or so time scale.

thanks for replying,

Paul

0 Sajad Rahmdel over 6 years ago in reply to Paul Smith

Expert 1705 points

Chuck,
We also need this functionality.
Thanks

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ADS52J90EVM + TSW14J56EVM trigger operation