How to Acquire an Image

Main Tab

1. In the Step Name control, enter a descriptive name for the step.
2. Select the NI device connected to your camera.
3. Select the Acquisition Type for the acquisition.
4. Select the Acquisition Mode you want to use.

Image Trigger Tab

3. Select Triggered Acquisition if you want to start the image capture with a trigger.

   Note  The trigger signal must be connected to a trigger line of your NI device.

   Caution  The external trigger and RTSI lines of NI devices expect TTL signals and are not isolated. Do not provide anything other than TTL signals on these lines. Doing so could permanently damage your NI device.

4. Select the trigger line to which your trigger signal is connected.
5. Select the trigger polarity. Select Rising Edge if you want to start the acquisition of a new image on the rising edge of the trigger signal. Select Falling Edge if you want to start the acquisition of a new image on the falling edge of the trigger signal.
6. Enter a timeout value. If a trigger signal is not received within the timeout period, the step fails.
7. If you are using a line scan camera, proceed to the next section. Otherwise, click OK to add the step the inspection.

Line Trigger Tab

Note  The following steps only apply to line scan cameras.

8. Select the trigger line to which your trigger signal is connected.
9. Select the trigger polarity. Select Rising Edge if you want to start the acquisition of a new line on the rising edge of the trigger signal. Select Falling Edge if you want to start the acquisition of a new line on the falling edge of the trigger signal.
10. In the Skip Trigger control, enter the number of trigger signals to skip before acquiring a new line. If a trigger signal is not received within the timeout period, the step fails.
11. Click OK to add the step to the inspection.