6.2. SPC Attribute: General Characteristics

Select the General tab in the Attribute Quality Characteristics properties dialog box.

General features are as follows.

1	Active
2	Name
3	Description
4	Calculation type
5	Data setpoint ID

1

Active

Does the following.

Checked	Activates data collection for the product attribute.
Clear	De-activates data collection for the product attribute.
Default	Checked

2

Name

Identifies the product's attribute characteristic that will be measured

Maximum Length		16 characters.
Default	ATT

3	Description

Provides details to clearly identify the characteristic.

Maximum Length

40 characters

4	Calculation type

Selects the attribute characteristics calculation type that will be available for charting.

Types are:

Chart	Values for:
nP Chart	Number of defective units in each sample.
P CHART	Proportion of defective units in each sample.
C CHART	Total number of defects in a unit.
U CHART	Mean (average) defects per unit during the sampling period.

• Only 1 of the 4 available attribute chart types can be configured for a single product at a time.
• A maximum of 4 attribute charts can be configured per product.

5	Data setpoint ID

Enables usage of the selected chart values elsewhere in the selected project, or downloaded to a device.

Point type

Floating-point array point of 2 elements