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SIPLACE 80S/F/G User’s Manual 7 Vision Systems Edition 07/97 from S oftware Version SR.010.xx 7.6 Test Component Line engi neer 7 - 77 4. Lead-Dri ven Mode See Sec tion 7.6.5. 2 from pag e 7 - 95 for a definition of the …
7 Vision Systems SIPLACE 80S/F/G User’s Manual
7.6 Test Component Edition 07/97 from Software Version SR.010.xx
7 - 76 Line engineer
Cross:
white: Result of position recognition -> x, y, angle
brown: Residual relative position for following measurement steps
Overlay:
grey: Profile in the integration direction concerned
blue: Gradients from the above profiles
yellow: Result of the geometric filter
red: Interpolation limits for position determination
light blue: Result of interpolation -> Position
3. Corner-Driven Mode
See Section 7.6.5.2 from page 7 - 95 for a definition of the measuring methods.
This measurement mode can be recognized by the windows around the entire pin row.
Procedure:
●
Determine the position in the direction of pins in the light blue window
●
Determine the position vertically to this in the dark blue window
●
Calculate the position of each pin group and thus of the component
Rectangles:
light blue: Search window for the position in the direction of pins
dark blue: Search window for the position vertically to this
green: x and y tolerances
Star:
orange: Result Location of the group concerned
Comments:
Depending on the measurement algorithm selected the middle or the tip of the pin group in the direc-
tion of pins will be displayed.
Cross:
white: Result of position recognition -> x, y, angle
Overlays:
grey: Profile in the integration direction concerned
blue: Gradients from the above profiles
yellow: Result of the geometric filter
red: Interpolation limits for position determination
light blue: Result of interpolation -> position
Comments:
The overlay is provided both for the light blue as for the dark blue search windows.
SIPLACE 80S/F/G User’s Manual 7 Vision Systems
Edition 07/97 from Software Version SR.010.xx 7.6 Test Component
Line engineer 7 - 77
4. Lead-Driven Mode
See Section 7.6.5.2 from page 7 - 95 for a definition of the measuring methods.
This method can be recognized by there being
–
either a window around a lead group (combined window, preset value)
–
or a window around each individual lead (separate window). You can modify the "separate" or "combined"
window type under the "Change measure mode" menu by entering the hex code.
Procedure:
Each lead is measured individually, as in corner-driven mode, or the entire lead group is measured.
Rectangles:
dark blue: Search windows around every pin of a group
light blue: Search windows around the first pin of a group
green: x and y tolerances
Cross:
white: Result of position recognition -> x, y, angle
Overlay:
grey: Profile in the integration direction concerned
blue: Gradients from the above profiles (the gradients are only displayed and required for the
profile in the direction of pins).
yellow: Result of the geometric filter
red: Interpolation limits for position determination
light blue: Result of interpolation -> Position
Comments:
An overlay is offered for both directions of integration.
7 Vision Systems SIPLACE 80S/F/G User’s Manual
7.6 Test Component Edition 07/97 from Software Version SR.010.xx
7 - 78 Line engineer
Optical gauging of BGAs and Flip Chips in the 80F placement machine
The cross-hairs show the position of the component on the camera coordinates system. The component out-
lines are brought out in color.
The measured values represent the geometrical component parameters such as
–
Position in the camera coordinates system
–
Rotation angle
–
Maximum offset of the solder balls in x and y directions
–
Factor for the quality of measurement
1. Grid-Driven Mode
See Section 7.6.5.2 from page 7 - 95 for a definition of the measuring methods.
The grid-driven mode works with prespecified pattern tolerances and is therefore to be regarded as a first
measurement step in the optical gauging of BGAs and flip chips. To determine the approximate position it will
be enough to measure just a few connections.
The number of balls to be measured and the pattern tolerances define the size of the search window. The
approximate position and the rotation of the component are determined in corner mode: in other words, a
search window size is defined for each corner of the component. This measuring method can be recognized
by
–
the synthetic representation of the model in pixel resolution at the lefthand edge of the video screen and
–
the 4 windows at the corners of the component.
Procedure:
–
The algorithm defines 4 dark-blue corner windows which depend on the pattern tolerances and the balls
defined in the GF file. The default search value is 5 balls.
–
A recognition algorithm is run in order to detect all of the balls associated with the model. Those found will
be marked with light blue crosses.
–
The balls defined in the GF file are determined by the search algorithm. The balls found will be outlined in
white. If defined balls are not found, an error message will appear on the screen.
–
With these data the approximate position and the angular offset of the component is determined. The mea-
sured position of the component is marked with white cross-hairs.
Rectangle:
Dark blue: 4 search windows, depending on the pattern tolerances and number of balls
Cross:
White: ball model candidates found
Overlays:
White: balls found and defined in the GF file