YSI_Prog_E - 第173页

4-13 4 Inspection status 4 Perform a step test. 1. Press the [Step] button at the "T uning" tab to per form a test for the created step. 2. When the test result appears, press the [End] button. When doing so, t…

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Inspection status

Set the "Judge" parameters.

Open the "Judge" tab and set the following parameters.

"Judge" parameters

Status: Character Recognition

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Inspection Character String

Enter the character string to be inspected. Up to thirteen characters can be entered.

OCR Type

Select the appropriate setting from among "Cap&Num", "Cap", and "Num" (Alphanumeric,

Alphabetic, and Numeric) for the character string to be inspected. In the case of alphabetic

characters, only uppercase letters are recognized.

Match Type

Full : This inspects whether the detected character string completely matches the inspection

character string.

Partial : This inspects whether the detected character string contains the inspection character string.

You can enter a partial character string if you want to inspect only specific characters. If, for example,

only wishing to inspect 7 and 9 from a character string of "3793", enter "79" and set to "Partial". An NG

result is judged if unable to recognize the specified character string.

Min Score

If set to "1st candidate", the object with the highest score among the detection candidate characters

will be inspected. If the character print quality is poor, select small values such as 10 or 20 from the

drop-down list.

Acceptable Rotation

Sets whether to inspect the character angle.

NON : Select this setting when only the specified orientation should be judged to be OK

(normal setting).

Permit 180° : Select this setting for components such as chip resistors where 180° rotation presents

no problem.

Permit All : Select this setting for cases where the specified character presence/absence is the

only criterion and the character string angle is not an issue. However, the inspection

time will take a little longer because the image is rotated during image processing.

Set the character recognition angle in "Entry Angle" in the basic parameters. As shown below, this is the

angle rotated counterclockwise from 0°.

1234

0 degrees

90 degrees 180 degrees 270 degrees

1234

1 2 3 4

1234

Character recognition angles

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Inspection status

Perform a step test.

1. Press the [Step] button at the "Tuning" tab to perform a test for the created step.

2. When the test result appears, press the [End] button. When doing so, there is no problem if the test

result is "NG".

Press the [Detail] button.

A "Test Results" screen appears. Take a note of the results and check.

1. The detected character and recognition score (%) are displayed in order of highest degree of

recognition.

2. Review the "Min Score" setting in the judgment conditions parameters based on the recognition

score result.

3. By pressing the [Auto Calculation] button, the following detection conditions parameters are set

automatically.

Character Size X (mm)

The maximum X width in the test results is set.

Character Size Y (mm)

The maximum Y width in the test results is set.

TIP

Depending on the recognition status, there may be times when the "Character Size X, Y (mm)" is best left at "AUTO".

Perform a step test again.

1. Press the [Step] button at the "Tuning" tab again to perform a step test.

2. Take a note of and check the detection data, and then press the [End] button.

Screen after a step test is finished

Test resultDisplays detected data.

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Detected data

Threshold No. : Threshold No. used for inspection

Detect : This is the recognized character.

Score : This is the minimum recognition score for recognized characters.

3. If the test result is not judged correctly, review all parameters while referring to the detection data.

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Inspection status

1.5 Solder Quantity Check

This inspection status is used to detect solder fillets on chip parts, and to inspect solder quantity.

Make a "step" setting.

1. Create a step frame.

2. Open the "Basic" tab, and set the "Status" in the basic parameters to "Solder Quantity Check".

3. Open the "LIGHT" tab, and set the light sampling type and threshold value in the lighting parameters

so that fillets are shown in red.

Sampling light type reference: Shape

Status (inspection mode)

Solder Quantity Check

Set to "Solder Quantity Check".

Step frame

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Set the "Detect" parameters.

Open the "Detect" tab and set the following parameters.

"Detect" parameters

Status: Solder Quantity Check

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Minimum Detectable Size X, Y (mm)

Sets the minimum size for the solder to be inspected. For example, if the step frame is horizontally long,

set X = 0.06 and Y = 0.01, and if the step frame is vertically long, set X = 0.01 and Y = 0.06.