External camera trigger

Development
1

Hello,
I want to trigger a camera using an external trigger,
1- I set the first line trigger using the function: arv_camera_set_trigger_source(USB_camera, “Line0”, &USB_error);
2- I send the voltage and read the result using the function: arv_camera_dup_available_triggers(USB_camera, &n_sources[0], &USB_error);
n_sources is an array of 5 values. after calling this function I have 2 in the first element.

I have a question what value does the camera send If the first line is set to 3.3V? I don’t know the expected value, so is it something we could find in the arvavis-0.8 features or something we should look at in the datasheet?
Thank you in advance,

2

any idea about this issue please?

3

Hi,

It is not clear what you are trying to achieve. The external trigger is a mean to start an image acquisition using an electrical signal. Depending on the device and its configuration, this electrical trigger will either start an acquisition sequence, or a signal image acquisition. Please refer to the device domcumentation.

arv_camera_dup_available_triggers is not meant to give you an information about the voltage applied on the external trigger pin.