Owner's manual

6-6 Beginning Programming
6.4.1.6 Pots
Potting (Weight Control Dots) is a technique used to fill cavities or to dispense multi-height shapes.
Weight-Control dots can also be used by activating the Weight-Control feature and entering the desired
weight of the fluid to be dispensed. See 6.5 Dot Parameters for instructions on customizing dot
parameters.
6.4.1.7 Area Fill
Area Fill dispensing is commonly used for Chip Encapsulation and Cavity Fill applications. It is
important for the fluid to cover the part completely without voids. Superior volumetric control delivers
accurate fill heights for consistent wire bond coverage and fill flatness.
6.4.1.8 Spiral Fill
Spiral Fill dispensing is commonly used for Chip Encapsulation and Cavity Fill applications. Fluid is
dispensed in a spiral pattern.
6.4.1.9 Weight Control Lines
Weight-Control Lines are most commonly used in flip chip underfill applications. These are lines where a
defined amount (weight) of fluid is dispensed over a defined length of a line or pattern. They are more
accurate than ordinary lines. See 6.6 Line Parameters for instructions on customizing certain line
parameters for greater control over specific characteristics of the line.
6.4.1.10 Weight Control Fill
Weight Control Fill is most commonly used in encapsulation applications where it is important for the
fluid to cover the part completely without voids. A defined amount (weight) of fluid is dispensed in a
defined area.
6.4.1.11 Delta Z Line
Delta Z Line provides the capability to dispense a line at multiple Z heights by height sensing at user
selected locations on or near the line. The needle height will linearly raise, lower, or maintain its position
as it passes from one height sense location to the next. Both weight control and non-weight control line
dispensing is supported. Delta Z Line is available on PMAC platforms only. The "Batch Height Sense"
option does not apply to the Delta Z Line instruction.
6.4.1.12 Find Substrate Height
This command inserts a Find Substrate Height procedure into your program. When FmXP performs a
Find Substrate Height procedure, it touches the substrate surface with the Height Sensor Probe, records
the Z-axis information, and uses the height information during dispensing.
6.4.1.13 Pattern
A pattern is a sequence of related instructions. As mentioned previously, a program can contain several
patterns. For example, you could include one pattern for dots and another for lines. The Pattern button
opens drop-down menu containing all Pattern-related functions.
6.4.1.14 Select Valve
This feature identifies which valve is affected by the current dispensing commands. It only applies to
systems equipped with a Dual-Action Dispensing Head.