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6 Vision functions User Manual HS-50 6.8 Recommendation for vis ually centering components Software-Version 5.01 Edition 01/99 312 So, set the bal l rad ius on the statio n compu ter and then adju st the qua lity in the …
User Manual HS-50 6 Vision functions
Software-Version 5.01Edition 01/99 6.8 Recommendation for visually centering components
311
Å Select a positive ball contrast under the Ball Image Option (see page 6 - 276).
PLEASE NOTE
If a lot of ’non-ball structures’ are identified as ball structures (they can be recognized by the
small crosses), increase the ball contrast. The number of crosses can be estimated in the
’Measure’ menu during the grid measurement.
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If you select a high value for the ’Ball image’ option in the ’Test component’ menu, this will reduce
the effect of any defective structures. It does mean, however, that there is a possibility that not
every ball will be detected.
Set a lower value to ensure that all the balls are detected. This will reduce the reject rate, but the
measurement will take longer.
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Enter the ball radius on the line computer. This value is automatically reduced by 20 % since the
vision system will detect balls even if the specified dimensions are smaller then their actual phys-
ical dimensions.
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Resolution for calculating
the angle:
low resolution
For single measure-
ment:
3 balls per corner
Standard
ball detection:
Hex value P1 = 80
Fast
ball detection:
Hex value P1 = A0
PLEASE NOTE:
Switch Ball mode off if it is not necessary
to measure all the balls.
In this case, P1 must be set to 80 in Grid mode.
Resolution in the measur-
ing direction:
medium
For multiple measure-
ment:
5 balls per corner
Resolution
in the integration direction:
medium
Hex value P1 = 80
Tab. 6.8.1
6 Vision functions User Manual HS-50
6.8 Recommendation for visually centering components Software-Version 5.01 Edition 01/99
312
So, set the ball radius on the station computer and then adjust the quality in the ’Measure’ menu.
– If no crosses are displayed on the ball, the radius is incorrect or the contrast is too high.
– If several crosses are displayed on a ball, then the radius has been entered incorrectly in the
’Measure’ menu.
PLEASE NOTE
We recommend that you select a radius on the line computer that is slightly larger than the
theoretical value and then adjust it in the ’Ball image’ menu.
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For high-contrast flip-chips and BGAs, you can reduce the physical case shape dimension to the
square surrounding the balls (’Case dimension’ option). This will reduce the measuring time, al-
though it can only be used for single measurements. Size mode must also be active.
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Under the’ Illumination Option’ in the ’Test Component Menu’, select:
– a value of around 50 for the medium illumination plane
– a value of around 20 for the steep illumination plane
User’s Manual SIPLACE HS-50 7 What schould you do ...
Software Version SR.501.xx Edition 01/99
313
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This chapter contains a number of subjects that are intended to help you during your daily work
on a SIPLACE line.
For example, you are provided with preventative measures that you can take to minimize the down
time on the machine to obtain the highest possible level of efficiency for the SIPLACE line during
production.
In addition, the tasks of the operator and of the line engineer are described in an operator and line
engineer profile, respectively, in this chapter.