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III- 24 Programming Manual Part III Inspection Algorithm 1.9.6 Setting Procedur e of Av era ge (SOP) Step1: Select a lighting that displays a polarity visually clear from the Lighting drop-down list. Step2: Change the al…

III-23

Programming Manual

Part III Inspection Algorithm

1.9.5 Use of Average

Polarity inspections by using Average provide higher accuracy.

In case of SOP, the algorithm makes an inspection window on a point-symmetric point of a polarity mark.

It calculates brightness level differences between inspection windows to reduce the effect of dusts or

noises.

In case of QFP, the algorithm makes an inspection window on a point-symmetric point and line-symmetric

point of a polarity mark. It calculates brightness level differences between inspection windows.

Figure 1-27 Average (Polarity)

Parameter Description

Lighting

Select a lighting that the brightness level difference between the polarity and the

surface is visually clear.

Algorithm This inspection uses Average and Mem1-Mem2.

Shift[V1-V8]

This parameter is displayed only in Average. Enter the appropriate vector. Any value from V1

to V8 is available. Select the vector according to the Memorize to ﬁ eld of the Adjust window.

Memory1[M1-M8],

Memory2[M1-M8]

This parameter is displayed only in Mem1-Mem2. If SOP is inspected, enter M1 in

the Memory1 ﬁ eld and M2 in the Memory2 ﬁ eld. If QFP is inspected, make three

Mem1-Mem2 inspection windows. Enter M1 in the Memory1 ﬁ eld in three inspection

windows. Enter M2 in Memory2 in the ﬁ rst inspection window, M3 in Memory2 in the

second inspection window, and M4 in Memory2 in the third inspection window.

Memorize to

If SOP is inspected, enter M1 or M2 in two Average inspection windows to register the

brightness level. Mem1-Mem2 calculates M1 minus M2. If QFP is inspected, enter M1, M2,

M3, or M4 in four Average inspection windows to register the brightness level. Mem1-

Mem2 calculates M1 minus M2, M1 minus M3, and M1 minus M4.

Upper, Lower

Enter 255 in the Upper ﬁ eld and 0 in the Lower ﬁ eld of Average. If brightness level of

polarity is higher than brightness level of component body, enter 255 in the Upper ﬁ eld and

1 in the Lower ﬁ eld of Mem1-Mem2. If brightness level of polarity is lower than brightness

level of component body, enter -1 in the Upper ﬁ eld and -255 in the Lower ﬁ eld.

Table 1-10 Parameter of Average (Polarity)

III-24

Programming Manual

Part III Inspection Algorithm

1.9.6 Setting Procedure of Average (SOP)

Step1: Select a lighting that displays a polarity visually clear from the Lighting drop-down list.

Step2: Change the algorithm of Polarity to Average.

Step3: If the polarity mark is circle, change the inspection window shape to circle. Press Option in the

right side of Algorithm. Check Use non-rectangle window and Circle Window and press OK.

Step4: Adjust inspection window size to match with a polarity mark.

CAUTION

Change the lighting if there is no difference between polarity and component body

with default lighting.

Step5: Enter 255 in the Upper ﬁ eld, 0 in the Lower ﬁ eld, and M1 in the Memorize to ﬁ eld.

Step6: Enter the appropriate vector into the Shift ﬁ eld by selecting from V1 to V8 according to the

vector used in the Memorize to ﬁ eld in the Adjust window.

Step7: Select the Average inspection window. Right-click and select Point-Symmetric Copy.

Step8: Enter M2 in the Memorize to ﬁ eld of the inspection window which is made on Step7.

Step9: Select the inspection window which is made on Step7. Right-click and select Copy Window.

Step10: Change the algorithm of the inspection window which is made on Step9 to Mem1-Mem2.

Step11: If brightness level of a polarity mark is higher than brightness level of the component body,

enter 255 in the Upper ﬁ eld and 1 in the Lower ﬁ eld. If brightness level of a polarity mark is

lower than brightness level of the component body, enter -1 in the Upper ﬁ eld and -255 in

the Lower ﬁ eld.

Step12: Enter M1 in the Memory1 ﬁ eld and M2 in the Memory2 ﬁ eld.

Step13: Press Inspect. Make sure that the inspection is completed properly.

III-25

Programming Manual

Part III Inspection Algorithm

1.9.7 Setting Procedure of Average (QFP)

Step1: Refer to Step1 to 6 of Part III 1.9.6 Setting Procedure of Average (SOP).

Step2: Select the Average inspection window. Right-click and select X-Symmetric Copy.

Step3: Select two Average inspection windows by pressing

Right-click and select Y-Symmetric Copy.

Step4: Change the Memorize to value of the Average inspection windows. Enter M2, M3, or M4

in the Memorize to ﬁ eld of the inspection windows which are made in Step2 and Step3.

Step5: Select the inspection windows which are made in Step2 and Step3.

Right-click and select Copy Window.

Step6: Change the algorithm of the inspection windows which are made in Step5 to Mem1-Mem2.

Step7: Select the inspection windows which are made in Step5. Right-click and select Copy Window.

Repeat the same procedure twice to make two windows.

Step8: Change the Memory2 value of the Mem1-Mem2 inspection window. Enter M2, M3, or M4

in the Memory2 ﬁ elds of the inspection windows which are made on Step7.

Step9: Change the Upper ﬁ eld and Lower ﬁ eld of Mem1-Mem2. If brightness level of a polarity

mark is higher than brightness level of the component body, enter 255 in the Upper ﬁ eld

and 1 in the Lower ﬁ eld. If brightness level of a polarity mark is lower than brightness level

of the component body, enter -1 in the Upper ﬁ eld and -255 in the Lower ﬁ eld.

Step10: Press Inspect. Make sure that the inspection is completed properly.

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Figure 1-28 Inspection Window for Polarity Inspection