Owner's manual

Glossary G-7
SMEMA: Surface Mount Equipment Manufacturers
Association. Established protocol for signal
communication between two or more different
systems.
SPC: Statistical Process Control. Machine
performance data gathered and stored in text files.
You can review SPC files to monitor system
performance.
Step and Repeat: An FmXP feature that allows you
to quickly and easily place the same pattern or
dispensing instructions at multiple locations on a
single workpiece.
Substrate: Any surface, part or element, usually a
PCB, that is being dispensed upon.
Substrate Height: The substrate height is a Z-axis
value the dispensing system assigns to the maximum
distance the Dispensing Head must descend before
dispensing.
Surface Mount Adhesive (SMA): An adhesive used
for attaching chips to PCBs.
SVGA: Super Video Graphics Array. A video card
that produces high-quality color images at high
resolution.
Syringe: A cylindrical package of fluid, typically
plastic and containing 1-50 cc of fluid. It looks
similar to a medical syringe.
Syringe: A reservoir containing the dispensing fluid
that is usually attached to the Dispensing Valve.
Tactile Sensor: A sensor located adjacent to the
Needle Sensor that is used to calculate the Z-axis
offset between the Height Sensor probe and
dispensing needle tip.
Teach: Entering and saving XYZ locations.
Terminal Mode Window: A window or screen that
allows you to type commands for a particular device,
such as: Dispenser, Conveyor, Scale, etc.
TFT: Thin Film Transistor. The Monitor component
that provides color images for a liquid crystal display.
Toolbars: Accessory menus containing icons for
performing certain actions.
TS-01 Interface Simulator: A small Asymtek
device used to simulate Conveyor communication
between the dispensing system and neighboring
material handling Conveyors.
ULHC: Upper Left Hand Corner.
Underfill: The process of flowing epoxy
underneath a flip chip on a PCB to completely seal
the solder bumps.
URHC: Upper Right Hand Corner.
V: Abbreviation for volt as in VAC (Volts
Alternating Current). See also AC, DC.
Valve: A FmXP-controlled type of Dispensing
Valve, such as the DV-7000, that dispenses by
opening and closing a needle, spool, or pinch tube
valve to start and stop the flow of a pneumatically
pressurized fluid. Fluid heating, if required, is
accomplished using a Needle Heater attached to a
Luer adapter. Can be configured to dispense dots,
lines, or patterns.
Valve Bias: Generally used with Weight Control
Lines. If the weighed fluid is consistently over or
under the desired percentage of fluid after a flow rate
calibration, you can set the bias to compensate for the
variation. If Local Machine Offsets is active, the
parameter will be labeled "Local Machine Valve
Bias” instead of “Dispensed Weight Bias”. See also
Bias Limits and Dispensed Weight Bias.
Valve Offsets: A setup routine that allows you to
perform one or all of the setup procedures one step at
a time.
Variable Valve Speed: FmXP technology that
allows the programming of multiple material flow
rates per board without necessitating dual valves.
Video Overlay: The video image from the camera
placed inside a Windows area.
Viscosity: Viscosity is a measurement of the flow
properties of a fluid. High viscosity fluids have a
high resistance to flow and low viscosity fluids have
a low resistance.
Vision Card: Computer card that receives video
signals from the Camera and displays video image.
Vision File: Vision files store fiducial and light-
level information. Vision files are saved with an .avw
filename extension.
Vision System: Includes the Camera, DOAL,
Computer hardware and software, and the Monitor.
Weigh Station: See Scale Station.
Weight-Control Line: A line in which the thickness
is determined by the amount of fluid weight it
contains.