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7 Vision Systems SIPLACE 80S /F/G User’s Manual 7.7 Guidelines for D escribing Package Forms Edition 07/97 from Software Version S R.010.xx 7 - 106 Line engine er 7.7.6.3 Sett ings for Illuminating Standard Components Th…

SIPLACE 80S/F/G User’s Manual 7 Vision Systems

Edition 07/97 from Software Version SR.010.xx 7.7 Guidelines for Describing Package Forms

Line engineer 7 - 105

Flat illumination level

The flat illumination level is used for illuminating J-lead components (PLCC), Melfs and components with con-

vex-type leads. It tends to emphasize body and lead edges and suppresses reflective component surfaces.

Steep illumination level

The main application for the steep illumination level is for reflective leads, ceramic components and bright

component bodies. It is less suitable for reflective component bodies.

NOTE

For the best illumination of most components a combination of these two lighting levels is required.

Using one illumination level will only be successful in exceptional cases.

7.7.6.2 Pseudo-Color Display

The pseudo-color display is used to enable an informative and objective evaluation of the illumination to be

made. Each brightness value is represented by a different color.

Revolver head conversion table for the pseudo-color display

For measurement a contrast of at least 4 color steps is required between the leads and the body. Under the

GF manipulator's Illumination menu, components are displayed in pseudo-color on the station computer mon-

itor.

Color step Brightness

white

light

yellow

orange

red

brown

green

light blue

blue

violet

black

dark

7 Vision Systems SIPLACE 80S/F/G User’s Manual

7.7 Guidelines for Describing Package Forms Edition 07/97 from Software Version SR.010.xx

7 - 106 Line engineer

7.7.6.3 Settings for Illuminating Standard Components

The standard range of components includes chips (0402 to 2220), tantalum capacitors, Melf components,

PLCCs, QFPs, SOs, SOJs, TSOPs, ICs, and power components.

For the components which are listed below the GF interpreter in the station computer uses the default illumi-

nation parameters listed in Fig. 7.7.7:

–

Chips (0402 to 2220)

–

Tantalum capacitors (component bodies, non-reflective)

–

Melf

–

PLCC, QFP, SO, SOJ, TSOP, ICs

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 7.7.6.4,

Page 7 - 106).

Fig. 7.7.7 Illumination parameters for standard components at the revolver head camera 19 x 25

7.7.6.4 Settings for Illuminating Other Components

Fig. 7.7.8 presents a list of the illumination settings for other components.

Diagram for adjusting the illumination of standard components

Chip

Power IC

Melf

Tantalum

capacitor

0805 and

larger

0402,

0603

General

flat: 110

steep: 110

flat: 200

steep: 50

flat: 225

steep: 90

flat: 110

steep: 70

Gullwing

SO, SOT,

TSOP

QFP,

flat: 120

steep: 180

flat: 120

steep: 180

J-Lead

PLCC

flat: 140

steep: 90

Illumination

level

Brightness

SIPLACE 80S/F/G User’s Manual 7 Vision Systems

Edition 07/97 from Software Version SR.010.xx 7.7 Guidelines for Describing Package Forms

Line engineer 7 - 107

Fig. 7.7.8 Illumination parameters of other components at the revolver head camera 19 x 25

Adjusting the illumination of other components

Light and dull body

( white, yellow, red, brown, grey,

metallic dull )

Light Ceramic body

Dark and dull body

( black, blue, green )

Reflective body

(independently of color and material)

Dull leads

flat: 180

steep: 180

Visual separation between leads

and body is not possible.

Illuminate body and leads equally.

Measure outline.

Shiny leads

Dull leads

Shiny leads

Clear separation

between leads

and body.

flat: 180 - 255

steep: 0 - 50*

Clear separation between

leads and body.

( applies to dull leads only )

Clear separation

between leads

and body.

J-Lead (PLCC), convex-type leads

Gullwing leads ( SO, QFP )

Dull leads

Shiny leads

flat: 120

steep: 150

flat: 120

steep: 180

Clear separation between body

and leads, if these are convex-

type. In the case of flat leads, will

depend on type, not recommended.

Clear separation

between leads

and body.

J-Lead ( PLCC ), convex-type leads

Gullwing leads ( SO, QFP)

flat: 120

steep: 180

flat: 140

steep: 90

Clear separation

between leads

and body.

Clear separation

between leads

and body.

Other lead shapes

Dull leads

Visual separation between leads

and body is not generally possible.

Shiny leads

Leads:

Outline:

Measuring method:

Visual separation between leads

and body is not possible.

Illuminate body and leads equally.

Measure outline.

flat: 120

steep: 180

Leads are outside the body.

Visual separation between leads

and body is not possible.

Measure outline or leads using

Center

me asuring mode.

J-Lead ( PLCC ), convex-type leads

Gullwing leads ( SO, QFP )

Other lead shapes

Convex-type leads

Other lead shapes

flat: 180

steep: 80 - 140

Visual separation between leads

and body is not generally possible.

Illuminate body and leads equally.

Measure outline.

flat: 120

steep: 180

Visual separation between leads

and body is not generally possible.

Center over body. In general not

recommended.

flat: 180

steep: 0

flat: 0

steep: 180

flat: 180

steep: 180

Measure outline.

Useful measurement is only pos-

sible when the leads are located

within the body.

flat: 180

steep: 180

* Only permissable

when the unevenness

of the body is no more

than 2°.

flat: 180

steep: 0 - 50*

Only possible with

convex-type leads.

flat: 150 - 255

steep: 0 - 50*

flat: 150 - 255

steep: 0 - 50*

Illumination level Brightness