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7 Station extensions User Manual SIPLACE HS-60 7.5 Ceramic substrate centering Software version SR.503.x x 07/2003 US Edition 172 base mate rial, such as cer amic or CE M. Fiduc ials cov ered with solde r resis t can als…
User Manual SIPLACE HS-60 7 Station extensions
Software version SR.503.xx 07/2003 US Edition 7.5 Ceramic substrate centering
171
7.5.5 Optical centering with the multi-color PCB camera
7.5.5.1 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.
7
Fig. 7.5 - 3 Multi-color PCB camera
7.5.5.2 Types of illumination for the multicolor PCB camera
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.
– 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
7 Station extensions User Manual SIPLACE HS-60
7.5 Ceramic substrate centering Software version SR.503.xx 07/2003 US Edition
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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/plat-
inum fiducials on ceramic. This should be tested by carrying out a test centering or placement
run.
User Manual SIPLACE HS-60 7 Station extensions
Software version SR.503.xx 07/2003 US Edition 7.6 Fine calibration
173
7.6 Fine calibration
7.6.1 Overview
Fine calibration involves measuring the machine’s placement offset and determining the required
correction from this value. The ‘Fine calibration’ measuring program is integrated into the SIT-
EST program, and a detailed description of the measuring procedure is given in the ‘Fine calibra-
tion’ instructions (part no. 00191655-01).
CAUTION
The SITEST program is password-protected. It must only be called up and used by SiemensDe-
matic engineers or appropriately trained personnel. 7
7.6.2 System requirements
The following system requirements must be fulfilled in order to use the fine calibration program:
Machine type HS-60
Station computer software version 503.xx or later
SITEST version 503.xx or later
7.6.3 Measuring equipment and tools
The following are supplied as standard:
– Mapping plate (glass plate in a metal frame)
– Double-sided transparent adhesive film
– Lighting unit
– CERAM components in the feeder for the 12-segment Collect&Place head
7.6.4 Description of the functions
A large number of CERAM components are placed on a glass PCB covered with adhesive film.
On the top of the CERAM components there are reference fiducials in each corner. The glass
PCB also has reference fiducials in the immediate vicinity of these component fiducials.