3_AVS-V2_MCT-UM-internal_EN_07-2019.pdf - 第112页

ASM AVS - U SER M ANUAL P AGE 112 OF 182 In the anal ysis ta b are the mo st dif fere nces f rom a plac eme nt p rojec t to a pri nter pro ject . 1. In ca se t hat t here are ste ncil refe re nce data avai lab le, yo u c…

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5.2.25.7 Printer Project Analysis-Tab

As already mentioned in the introduction in 5.2.25.1, review / analysis of printer measure-

ments cannot be done in the same way as with a placement machine.

The single measurements, in the printer mode "Single", or several individual measurements in

the printer mode "Accumulate" are only used for setting the printer parameters, or for ad-

justing the offsets.

To evaluate the MCT, the printer mode "Point2Point" is required.

For details, see 5 Printer mode:

For example: A stencil (recipe) has 7x4 = 28 measurement points. So, 20 measurements for a

MCT, gives 560 measuring points.

To increase the safety on calculation, all 560 measuring points are used when calculating cm /

cmk values. But these are grouped first (1

point, 2

point, ... to 28

point) and from each of

these groups, the standard deviation and average value are calculated. Subsequently, these

28 standard deviations are averaged to one standard deviation and also the 28 mean values

are summarized to one average mean value.

However, since this calculation cannot be represented graphically, there is a slight difference

between the statistical calculations and the graphical representation.

The graphs refer to a "Board2Board" view.

Board 2 Board:

Point 2 Point:

X-, Y-

times

Measurement

X-, Y-

times

X-, Y-

times

X-, Y-

times

Offset X

Offset Y

Offset X

Offset Y

Offset X

Offset Y

Offset X

Offset Y

Standard Deviation

and Mean Value

of 20 Board Offsets

X-, Y-

times

Measurement

X-, Y-

times

X-, Y-

times

X-, Y-

times

Standard Deviation

Mean Value

1. point

1 Standard Deviation

and 1 Mean Value,

as an average of

56 Standard Deviations

and 56 Mean Values

(28 * X and Y)

of 28 Point-Offsets

over all 20

measurements

Standard Deviation

Mean Value

2.point

Standard Deviation

Mean Value

3 point

Standard Deviation

Mean Value

28.point

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In the analysis tab are the most differences from a placement project to a printer project.

1. In case that there are stencil reference data available, you can activate the calculation of it,

with this checkbox. See 5.2.18.15 Base Data – Stencils

2. Before the measurement is started, the 4 parameters from the printer must be entered in the

fields below the measurement table.

- Print speed: in mm/sec. (25)

- Print pressure: in kg (4)

- Separation distance: in mm. (3)

- Separation speed: in mm/sec. (1)

Print speed and Print Pressure must be adjusted for both printing directions separately,

Forward and Reverse.

3. With each measurement the values from area 1 are being allocated to the measurement spe-

cific parameters.

With this procedure, a history regarding these parameters can be realized for the printer ad-

justment measures.

• Now, start the first measurement:

The printing direction is shown in the list, for each measurement with Radio buttons.

Recommendation with Loctite 3616 and

stencil with 800µm circles in brackets.

You will be directly asked for the printing di-

rection of the measurement.

For the first measurement there is no direction

preselected and you cannot continue, without

selection. On the start of each following meas-

urement, the direction will be changed auto-

matically and set per default. You just need do

check and confirm, or adjust.

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4. Multiple selection of SID’s to be analyzed:

Due to the facts described in 4.2.7.1 it is necessary for the printer MCT’s, to select numbers of

measurements at once. Click onto the button “Select” in area 4.

A dialog will appear which helps to Activate/Deactivate measurements:

5. Printer mode:

For printers, the result of the calculations can be getting in 3 different modes.

- Printer mode “Single”:

In this mode, a single measurement is evaluated.

Even if you have selected multiple measurements in the list, in the evaluation views only

one measurement is displayed.

You must select the measurement you want to evaluate from the list of parameter "SID".

The SID can be found in the list, in the column "File Name".

NOTICE

! Comment the measurement !

As far as possible, you should comment each measurement in order to document the

previously incurred changes.

This is useful to find a common thread among the adjustments and, above all, to see

the start and end of each stage (offset adjustment, MFU).

Choose which measure-

ments (from/to) should be

prepared with the actions

beleow.

Choose, if you want to

activate, or deactivate

measurements.

Choose, if the action

should be carried out on

either on “All Measure-

ments”, on the “Back to

Front”, or “Front to Back”.