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User Manual SIPLAC E CF 7 Station extensions Software Vers ion SR.408.xx 03/2006 US Ed ition 7.5 Multicolor PCB camera (type 18) 193 – Whi te lightin g This typ e of il luminati on is us ed for s tandard PCBs with tinn e…

7 Station extensions User Manual SIPLACE CF

7.5 Multicolor PCB camera (type 18) Software Version SR.408.xx 03/2006 US Edition

192

7.5 Multicolor PCB camera (type 18)

7.5.1 General

As an option, a multicolor PCB camera can be installed in place of the sub-gantry camera. The

multicolor PCB camera offers four different types of illumination. This greatly increases fiducial de-

tection and thus the centering accuracy.

Fig. 7.5 - 1 Multi-color PCB camera

7.5.2 Type of illumination

The following types of illumination can be selected on the multicolor PCB camera:

– Standard lighting

This mixture of white and infrared lighting can be used to detect a broad range of fiducials.

The image contrast can be improved by varying the illumination, thus optimizing the centering

of different fiducials.

User Manual SIPLACE CF 7 Station extensions

Software Version SR.408.xx 03/2006 US Edition 7.5 Multicolor PCB camera (type 18)

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– White lighting

This type of illumination is used for standard PCBs with tinned fiducials.

– Blue oblique lighting

In most cases, this can be used to greatly improve the contrast with bright fiducials on a light

base material, such as ceramic or CEM. Fiducials covered with solder resist can also be de-

tected better on a light background.

– Infrared lighting

This type of illumination is particularly useful for fiducials that are covered with solder resist

or for fiducials on flex materials. It is also sometimes possible to improve detection of silver/

platinum fiducials on ceramic. This should be tested by carrying out a test centering or place-

ment run.

7 Station extensions User Manual SIPLACE CF

7.5 Multicolor PCB camera (type 18) Software Version SR.408.xx 03/2006 US Edition

194