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6 Vision functions User Manual HS-50 6.7 Guidelines for Describing Package Forms Software-Version 5.01 Edition 01/99 308  Adjusting the illuminat ion of other components ( white, yellow, red, brow n, grey, metallic dull…

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User Manual HS-50 6 Vision functions
Software-Version 5.01Edition 01/99 6.7 Guidelines for Describing Package Forms
307
As a rule you will not need to change the illumination parameters for the standard components.
For all other components you will need to determine the illumination values and test them (see
Section 6.7.6.4 on page 6 - 307).
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Fig. 6.7 - 8 presents a list of the illumination settings for other components.
flat: 255
middle: 90
steep: 60
Diagram for adjusting the illumination of standard components
Chip
IC
Power ICMelf
BGA, µBGA
flip-chip
Tantalum
capacitor
BGA,
µBGA,
flip-chip
0805 and
larger
0402,
0603
Light
General
flat: 120
middle: 40
steep: 170
Reflective
body
flat: 120
middle: 100
steep: 100
flat: 70
middle: 60
steep: 150
Gullwing
SO, SOT,
TSOP
QFP,
flat: 170
middle: 50
steep: 120
flat: 0
middle: 10
steep: 170
flat: 255
middle: 120
steep: 10
flat: 170
middle: 60
steep: 120
J-Lead
PLCC
flat: 80
middle: 40
steep: 120
Ceramic
BGA
flat: 0
middle: 50
steep: 255
flat: 255
middle: 20
steep: 0
150
255
Contrast
graduation
6 Vision functions User Manual HS-50
6.7 Guidelines for Describing Package Forms Software-Version 5.01 Edition 01/99
308
Adjusting the illumination of other components
( white, yellow, red, brown, grey,
metallic dull )
( black, blue, green )
(independently of color and material)
Dull leads
flat: 70
middle: 60
steep: 150
Visual separation between leads
and body is not possible.
Illuminate body and leads equally.
Measure outline.
Shiny leads
Clear separation
between leads
and body.
Dull leads
flat: 150
middle: 120
steep: 0 - 20
Shiny leads
1. Illuminate body and leads equally.
Measure outline.
2. Trick: Use flat and middle levels to
bring leads image to saturation.
Measure.
Clear separation
between leads
and body.
for variant 2: flat: 150 - 255
middle: 60 - 150
steep: 0 - 20
flat: 200
middle: 80
steep: 0 - 20
flat: 120
middle: 80
steep: 0 - 20
Clear separation
between leads
and body.
Clear separation
between leads
and body.
J-Lead ( PLCC ), convex-type leads
Gullwing leads ( SO, QFP )
Dull leads
Shiny leads
flat: 120
middle: 50
steep: 170
flat: 170
middle: 50
steep: 120
Clear separation
between leads
and body.
Clear separation
between leads
and body.
J-Lead ( PLCC ), convex-type leads
Gullwing leads ( SO, QFP)
flat: 170
middle: 50
steep: 120
flat: 80
middle: 40
steep: 120
Clear separation
between leads
and body.
Clear separation
between leads
and body.
Other lead shapes
Dull leads
flat: 170
middle: 50
steep: 120
Visual separation between leads
and body is not generally possible.
Shiny leads
flat: 0
middle: 0 - 10
steep: 100 - 255
Clear separation
between leads
and body.
flat: 0
middle: 0 - 10
steep: 150 - 255
Leads:
Outline:
Measuring method:
Visual separation between leads
and body is not possible.
Illuminate body and leads equally.
Measure outline.
flat: 170
middle: 50
steep: 120
Visual separation between leads
and body is not possible. Measure
outline or lead tips. Leads are
outside the body.
flat: 80
middle: 40
steep: 120
J-Lead ( PLCC ), convex-type leads
Gullwing leads ( SO, QFP )
Other lead shapes
Convex-type leads
flat: 70
middle: 60
steep: 150
Other lead shapes
flat: 0
middle: 0 - 20
steep: 200 - 255
Visual separation between leads
and body is not generally possible.
Illuminate body and leads equally.
Measure outline.
User Manual HS-50 6 Vision functions
Software-Version 5.01Edition 01/99 6.7 Guidelines for Describing Package Forms
309
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You can set the illumination parameters by calling the ’Illumination’ option (see Section 6.6.4.8 on
page 6 - 272). Using the ’Measure Component Option’ on page 6 - 257 you can then measure the
component and check your settings with the aid of the measurement results.
Proceed as follows to test your illumination setting:
Å Using the illumination values suggested in Figures 6.7 - 7 or 6.7 - 8 carry out measurement.
Measurement should run through successfully.
Å For each level reduce the set brightness level by 50 %.
Measurement should run through successfully.
Å For each level raise the set brightness level by 50 %.
Measurement should run through successfully.
If you are not successful with the above procedure, proceed as follows:
Å Starting with the suggested illumination value, increase the brightness of each individual illu-
mination level for as long as measurement is still successful.
Å Find this upper limit value for each individual illumination level in turn.
Å Starting with the suggested illumination value, decrease the brightness of each individual illu-
mination level for as long as measurement is still successful. Find this lower limit value for each
individual illumination level in turn.
Å Determine the average value of the upper and lower limit values. This will be the optimum illu-
mination value.
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– Settings from the diagram:
flat: 170
middle: 60
steep: 120
– Measure the component. Measurement is successful.
– Reduce setting values by 50%.
flat: 85
middle: 30
steep: 60
– Increase setting values by 50%.
flat: 255
middle: 90
steep: 180