1422. File creation for unusual camera.

[Alvern]

Hi.

I have an addition question about 1422: can i send data to camera, using 1-4 pins or can i program the output values of Enable output of camera to work on 32MHz frequency (i.e. send some specific data with that "Enable bit")?

Cheers, Alex.

[Chris V]

Hi Alex,

The 1422 does have four digital I/O lines (bidirectional TTL) that you can read from and write to using the IMAQ I/O pallete.

Will this work for you purposes?

Have a great day,

Chris V

[Alvern]

Hello, Chris 

Yes, I think that may fit my needs. Are you talking about "External Triggers 0-4", which are on 95-98 pins on the NI-1422?

Could you give me another advice? How can i access them? As far as i understand, i have to create "interface file" using NI Camera File Creator (what settings should i use there?), then i may use NI library with my C++ program and sent the specific data using that triggers. For example, i need to send data : "1111111110110101111" with 125kHz speed rate. While sending that, i do not care neither about pixel clock nor about receiving data. Just want to send them to my camera. That's all. 🙂

Thanks in advance.

Kind regards, Alex.

[Alvern]

One more thing: in case i need to send several packets of that type of data, can i program the pause between them (1 zero bit between each data group) ?

Cheers, Alex.

P.s.: can i edit my messages here somehow?

[Alvern]

Hello.

While creating my camera file, I'm a bit confused. Where can i set the master clock value? How can i manually select the data lines for image acquisition? What about "Enable" lines? Is there any manual about using that application?

Kind regards, Alex

[Chris V]

Hi Alex,

Yes, those trigger lines are the DIO for the 1422.  You can write to them using the VIs on the Vision and Motion > NI IMAQ > Signal I/O pallete.  However, this will be software timed.  It is very unlikely that using software timed DIO you will be able to achieve 125kHz.

You could purchase a DIO PCI card with hardware timing and then you would be able to send these command signals easily.

Our support page (in addition to the in-program help) for the Camera File Generator is located here: http://sine.ni.com/psp/app/doc/p/id/psp-723/lang/en

Have a great day,

Chris V