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SIPLACE S-25 HM / S-27 HM 2 Assembly Inst ructions for PCB Camera, Multicolor 02/2007 Edition 2.12 Illumination Setting 85 2.12.3 Setting the Illumination The best illumination selection must be ascertained by using the …
2 Assembly Instructions for PCB Camera, Multicolor SIPLACE S-25 HM / S-27 HM
2.12 Illumination Setting 02/2007 Edition
84
2.12.2 Orientation Aid for Selecting Illumination
The following table is derived from empirical values and is therefore only to serve as an orientation
aid. A few materials often exhibit very drastic fluctuations (particularly in the case of CEM1), the-
refore the best illumination has to be ascertained through testing. In each instance this is done by
selecting the setting for illumination during the course of a sample placement with recognition of
the position of the pertinent PCBs or ceramic substrates. 2
Base material Fiducial material Oblique illu-
mination
BLUE
Infrared
light
White light
FR 4 Tin x
Ceramic NiAu, Cu, AgPl x
Ceramic AgPt x
CEM1 Bright copper fiducials,
tin
x
CEM1 Fiducials covered by sol-
der resist
(x) x
Flex on alumi-
num carrier
x
SIPLACE S-25 HM / S-27 HM 2 Assembly Instructions for PCB Camera, Multicolor
02/2007 Edition 2.12 Illumination Setting
85
2.12.3 Setting the Illumination
The best illumination selection must be ascertained by using the function "Test fiducials" or the
substrate to be populated. 2
NOTE:
The processes which must be executed prior to setting the illumination are described in detail in
the section "Teaching Fiducials" or "Teaching Synthetic Fiducials" of the User Manual, Software
version SR 502.xx.
During them, the current substrate or PCB is moved onto the processing belt of the conveyor and
mechanically centered / clamped in place. 2
: Select the ICON "Setting illumination"
: In the "illumination" menu select the "Setting illumination" button.
The following screen will appear:
Fig. 2.12.1 Screen: "Setting the Illumination"
NOTE:
Utilize Abschn. 2.12.2 and the table in Abschn. 2.12.3 to select the best type of illumination. 2
: Select the desired illumination level by activating the pertinent radio button.
: Select the complete or the reduced brightness by activating or deactivating the rectangular
field.
2 Assembly Instructions for PCB Camera, Multicolor SIPLACE S-25 HM / S-27 HM
2.12 Illumination Setting 02/2007 Edition
86
: Select the button "Positioning the gantry" and position the gantry over the fiducial that is cur-
rently to be recognized / tested.
: Check the quality of the image on the vision screen (see the section "Teaching Fiducials" in the
User Manual).
: If the image of the fiducial is still not optimal, select another illumination level or, if appropriate,
change the brightness too and select the button "Positioning the gantry" again.
: If the image of the fiducial is alright, select the button "OK".
As a result, the illumination set is accepted for both gantries.
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