Instruction Manual

Glossary 17-5
Underfill: The process of flowing epoxy
underneath a flip chip on a PCB to completely
seal the solder bumps.
URHC: Upper Right Hand Corner.
Valve: A device used to control or regulate the
flow of material from a pressurized reservoir,
such as a syringe. Valves can be actuated by
several methods, such as air pressure, augers, or
solenoids.
Valve Conditioning Fluid: A thick blue fluid
used to condition the inside of dispensing valves.
Video Card: Used in computer along with the
Cognex Board to run the Vision System.
Video Overlay: The video image from the
camera placed inside a Windows area.
Viscosity: The ability of a fluid to resist
deformation under stress. High-viscosity fluids
have a high resistance; low-viscosity fluids have a
low resistance.
Vision System: Includes the offset camera, vision
software and light source.
Weigh Station: A location on the dispensing
system where fluid is dispensed into a cup and
weighed for volume.
Weight-Control Line: A line whose thickness is
determined by the amount of fluid weight it
contains.
Workpiece: An object to be dispensed upon, such
as a PCB, Auerboat or leadframe.
X-Axis: Left to right movement of the dispense
head in the dispensing area.
X/Y-Axis: Two axes at right angles to each other.
Y-Axis: Forward and backward movement of the
dispense head in the dispensing area.
Z-Axis: Up and down movement of the dispense
head in the dispensing area.