Manual

17-2 Glossary
Flow Rate: Fluid in milligrams per second that is
emerging from the valve.
Fluidmove® for Windows NT (FmNT): Asymtek
proprietary dispensing software for use in a Windows
®
environment.
FSL: Free-Standing Loader. A self-contained, floor-
mounted unit that transports a carrier, a part, or a board
into or out of a magazine. The Upstream FSL holds a
full magazine of carriers, which it feeds into the
dispensing system. After processing, the Downstream
FSL receives them into an empty magazine. FSL’s gets
their instructions from programs created on the system
computer with Loadermove.
F-Stop: A numbered dial on the camera lens for
controlling light level by changing the size of the
camera aperture.
Gantry Machine: A non-conveyorized dispensing
system that has the machine and dispense head
suspended from above to allow greater clearance for
the substrate.
Gauge: Either analog or digital device used to measure
internal pressure of fluid or air.
Grounding Strap: A strap worn on the wrist of the
Operator and plugged into the Auxiliary Control Panel
to prevent an electrostatic discharge (ESD).
Heaters: Either contact, infrared, or needle heater
modules located between the conveyor rails, inside of
the tooling plate (the pre-dispense, dispense and post
dispense area of the dispensing system) or on the
dispensing needle. Used to heat parts during
dispensing and control the cure of the epoxy.
Height Sensor: An instrument used to locate the
surface of the substrate to determine its height and
record the information so the dispense tip can be
positioned at an exact distance above the surface,
ensuring consistent dispensing.
Home: The dispense head location whose (X,Y,Z)
location is defined as (0,0,0). The default setting is
where the dispense head was located when the system
was first turned on. On Asymtek systems, the default
home position is the front left hand corner of the
dispensing area.
I/O: Input/Output. Communication between one
component or device and another.
IC Encapsulation: Integrated circuit encapsulation.
Icons: Small buttons with a symbol representing the
function that they perform; used to execute a menu
shortcut.
Interlock Safety System: A key activated device used
to restrict access to the inside of the dispensing system.
JIT program: A just-in-time fluid delivery schedule
based on fluid shelf life. The schedule is worked out
with the distributor to prevent over-stocking so fluid
shelf life does not expire before it is used.
KPa: Kilo Pascals. Pressure measured in thousands of
Pascals.
Lead Frame: A type of part handler where multiple
parts are imbedded in a metal tape.
LED: Light-Emitting-Diode. The needle sensor has an
LED indicator light.
Levelers: Four adjustable pedestals (feet) on the
bottom of the machine or attached Workstation.
Light Beacon: A optional safety device usually
attached to the top of a dispensing system. Colored
lights and an audible alarm indicate machine status.
LLHC: Lower-Left-Hand-Corner.
Load Cell: A sensor located on Model NSZ needle
sensors that is used as a touch point for substrate height
measurements. The needle sensor probe touches down
on the load cell, which records the value (Automatic
Height Sensor Calibration).
LRHC: Lower-Right-Hand-Corner
Material Safety Data Sheet (MSDS): Information for
the safe use of materials. Generally included in the
fluid packaging.
Message Areas: In a Windows program, these are
windows or boxes that contain information for the
operator.
Micro-Pots: Dispensing technique for filling divots or
voids on the substrate or part.
Mil: One thousandth of an inch.
Model Window: The area defined as the fiducial when
using the Model Finder method of fiducial definition.
Multipass Pattern: A pattern that re-uses one set of
fiducials to repeat the same pattern at one or more
locations on the workpiece.
Needle Heater: Consists of a temperature controller
and a heater element attachment that heat the
dispensing needle.
Needle Sensor Substrate: A ceramic pad placed on the
needle sensor and dispensed on during needle location
definition routines.
Needle Sensor: A sensor located near the dispensing
area that records the XYZ location of the needle tip.
Non-Recoverable Interlock Condition: You must
completely exit the dispensing software program,
restart the dispensing software and re-open the program
to continue.
Notepad: A Microsoft Windows accessory software
application that can be used to read .TXT files, such as
the SPC files compiled during Event Logging.
Offset Camera: Locates XYZ dispensing coordinates
offset from the dispensing needle.
Operator: A person running pre-programmed
dispensing systems and performing routine
maintenance.
Opto-Coupled: An electrical device that uses light to
send information.