4 Product Specification
Bit
Tap 0
Tap 1
Tap 2
0 (LSB)
A0
B0
C0
1
A1
B1
C1
2
A2
B2
C2
3
A3
B3
C3
4
A4
B4
C4
5
A5
B5
C5
6
A6
B6
C6
7
A7
B7
C7
Table 4.8: CameraLink
®
3 Tap port and bit assignments for the D-240 cameras
4.6.1
3 Tap Mode
The D-240 cameras comply with the 8bit monochrome 3-tap CameraLink
®
base standard. The
first pixel in the image is located at tap 0, the second at tap 1 and the third is located at tap 2.
At the time of writing, no framegrabber visualization GUI supports this mode. It is however
possible and easy to write applications using this 3 tap mode when the 24-bit RGB mode is used
instead. In this configuration the red channel is tap 0 (or pixel 0), the green channel is tap 1 (or
pixel 1) and the blue channel is tap2 (or pixel 2).
If the 24-bit RGB mode is used, the framegrabber’s image width must be set 3
times smaller than the camera’s image width. The D-240 cameras send 3 pixel
data per CameraLink
®
clock cycle in parallel. The framegrabber in 24-bit RGB
mode however processes these 3 pixels as one RGB pixel.
In the RGB mode the memory management of a 24bit colour image has to be considered. Blue
is usually stored at address 0, green at address 1 and red at address 2 and so on in this order.
Since the blue channel in the camera link standard is located at tap 2 (pixel 2) and the red
channel at tap 0 (pixel 0), pixel 0 & 2 would be stored in the wrong order in the memory. The
D-240 cameras provide a “BGR” mode. This swaps pixels 0 & 2 at the camera link interface and
the pixels then have the proper order in the memory. In this configuration an image can be
grabbed in 24-bit RGB mode and the RGB buffer can be read out as an 8-bit monochrome
buffer without the need of copying the pixel data.
The application note [AN031] (MV1-D1312(I)-240 cameras 3-tap grab procedure)
explains the use of the 3-tap mode in more detail. There are examples for sev-
eral frame grabbers in the
SDK\Exampl
e sub-directory of the PFRemote installation
directory.
Ask Photonfocus support ( <support@photonfocus.com>) if you have a problem
using the 3-tap mode.
24
Summary of Contents for D-2048 CameraLink Series
Page 1: ...User Manual Photonfocus D L 2048 CameraLink Series CMOS Area Scan Camera MAN054 11 2013 V1 3...
Page 2: ......
Page 4: ...2...
Page 8: ...CONTENTS 6...
Page 16: ...3 How to get started CameraLink Figure 3 4 PFRemote start window 14...
Page 92: ...8 Graphical User Interface GUI 90...
Page 94: ...9 Mechanical Considerations 92...
Page 96: ...10 Warranty 94...
Page 98: ...11 References 96...
Page 102: ...A Pinouts 100...
Page 108: ...B Camera Revisions 106...