MultiCam Boards Documentation > GRABLINK series Documentation > GRABLINK DualBase Handbook > Functional Specification > Camera Classes > Camera Active Area

Camera Active Area

The Camera Active Area represents the rectangular array of pixels containing active video that are delivered by the camera to the frame grabber.

Hactive_Px Limits

For all cameras, the MultiCam parameter Hactive_Px represents the number of pixels in each line of the Camera Active Area.

The following restrictions apply to the value of Hactive_Px.

Restriction #1

The width of the Camera Active Area may contain at most 65535 pixels.

Restriction #2

Each tap delivers the same amount of pixels every line. In addition, Hactive_Px must be a multiple of XTaps.

Restriction #3

Each region must contain at least 64 bytes.

Note. For worst case situation, TapGeometry = 8 = 2X or 2X-1Y and 8-bit Bayer or monochrome cameras, the minimum value of Hactive_Px is 128 pixels.

Vactive_Ln Limits

For area-scan cameras only, the MultiCam parameter Vactive_Ln represents the number of lines of the Camera Active Area.

The following restrictions apply to the value of Vactive_Ln.

Restriction #1

The camera active window may contain at most 65535 lines.

Restriction #2

Each tap delivers exactly the same amount of pixels. In addition, Vactive_Ln must be a multiple of YTaps.