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<strong>Pantera</strong> <strong>SA</strong> DS -21-0<strong>2M30</strong> and DS-22-0<strong>2M30</strong> User’s Manual 43<br />
Figure 17: Primary Points in a Lens System<br />
Magnification and Resolution<br />
The magnification of a lens is the ratio of the image size to the object size:<br />
m<br />
h where m is the magnification, h’ is the image height<br />
<br />
h (pixel size) and h is the object height (desired object<br />
resolution size).<br />
By similar triangles, the magnification is alternatively given by:<br />
f<br />
m <br />
OD<br />
These equations can be combined to give their most useful form:<br />
h f<br />
<br />
h OD<br />
This is the governing equation for many object and<br />
image plane parameters.<br />
4.3 Compliance<br />
Example: An acquisition system has a 512 x 512 element, 10m pixel pitch area scan<br />
camera, a lens with an effective focal length of 45mm, and requires that 100m in the<br />
object space correspond to each pixel in the image sensor. Using the preceding equation,<br />
the object distance must be 450mm (0.450m).<br />
10m<br />
45mm<br />
OD 450mm ( 0. 450m)<br />
100m<br />
OD<br />
The <strong>Pantera</strong> <strong>SA</strong> DS-21-0<strong>2M30</strong> and DS-22-0<strong>2M30</strong> camera has been designed for EMC<br />
compliance. The test setup has been verified to the following EMC standards:<br />
CISPR-22:1997<br />
EN 50082-1:1997<br />
EN 61000-4-2; ±6kV CD, ±8kV AD:1995<br />
EN 61000-4-3; 3V/m:1996<br />
EN 61000-4-4; 500V, 1100V:1995<br />
Follow these specific guidelines to ensure best performance:<br />
• Keep Camera Link cables as short as possible.<br />
• Ensure that all cable shields have 360 electrical connection to the connector.<br />
• Fasten and secure all connectors.<br />
DAL<strong>SA</strong> 03-32-10150-01