Basler A400K Bedienungsanleitung PDF herunterladen (Seite 83)

AW00118501000 Features

Basler racer Camera Link 75

8 Features

This chapter provides detailed information about the features available on each camera. It also

includes an explanation of their operation and the parameters associated with each feature.

8.1 Camera Link Pixel Clock Speed

The camera features selectable Camera Link pixel clock speeds. The pixel clock speed determines

the rate at which pixel data will be transmitted from the camera to the frame grabber in your PC via

the Camera Link interface. The available pixel clock speeds are: 32.5 MHz, 48 MHz, and 65 MHz,

and 83.5 MHz. The default clock speed is 83.5 MHz.

Setting the camera for a higher pixel clock speed will increase the rate at which image data is

transferred from the camera to the frame grabber. Some frame grabbers, however, cannot operate

at the higher clock speeds. So it is important that you determine the maximum clock speed that your

frame grabber can handle and that you set the camera’s speed no higher than the frame grabber’s

maximum.

Keep in mind that if you set the camera for one of the lower pixel clock speeds, it may limit the

camera’s maximum allowed line acquisition rate.

If you change the clock speed while the camera is in the process of acquiring images:

 Triggering and image acquisition will stop.

 Any acquired image that is being transmitted will be delivered.

 The camera’s clock speed will be changed internally.

 Once the change is complete, triggering and image acquisition will resume.

The Camera Link clock speed setting will be stored in the camera’s configuration sets. This means,

for example, that if you have a different clock speed setting stored in user set 1 and user set 2 and

you change the active set from user set 1 to user set 2, the clock speed will change.

For more information about the maximum allowed line acquisition rate, see Section 6.4 on page 66.

For more information about configuration sets, see Section 8.13 on page 108.

Setting the Camera Link Pixel Clock Using Basler pylon

You can use the pylon API to set the Camera Link pixel clock speed from within your application

software. The following code snippet illustrates using the API to set the clock speed:

// Set the Camera Link pixel clock speed 32.5

Camera.ClPixelClock.SetValue( ClPixelClock_PixelClock32_5 );

// Set the Camera Link pixel clock speed to 48

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Basler A400K Bedienungsanleitung Seite 83