Manual

G-6 Glossary
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 FmNT-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: FmNT 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.
Workpiece: Any surface, part, or element (usually a
PWB) that is being dispensed upon. Workpieces may be
installed in a carrier such as a lead frame or Auer boat.
Workpiece Alignment: Workpiece Alignment refers to
its position in relation to the Dispensing Head X- and Y-
axes. If the workpiece is slightly askew, FmNT can use
Workpiece Alignment to adjust the patterns and
dispense correctly.
Workpiece Origin (WPO): The workpiece origin refers
to a user-defined origin point on the workpiece. FmNT
uses WPO to determine pattern placement locations.
Workpiece Pattern: All FmNT programs include a
Workpiece Pattern. The Workpiece Pattern typically
contains:
• Pattern instructions
• Dispensing Instructions/Process Commands
• Procedures
• Subpattern calls
• Pattern End Command
X-Axis: Left to right movement of the Dispensing Head
in the dispensing area. See
Figure G-1.
X-Beam: The apparatus that spans the width of the
dispensing chamber. The Dispensing Head is mounted
to the X-Beam and slides along it in the X-Axis.
Includes mechanical pulleys for the X-Axis cables.
Y-Axis: Forward and backward movement of the
Dispensing Head in the dispensing area. See
Figure G-1.
Z-Axis: Up and down movement of the Dispensing
Head in the dispensing area. See
Figure G-1.