Owner's manual

6-22 Beginning Programming
6.5.2 During-Dispense Dot Parameters
Item Description
Valve-On Time
This parameter controls the time the valve is on while positioned over
the dispensing location. The time interval affects dot size. The longer
the Valve-On Time, the larger the dot. The units are in seconds. The
typical value is 30 milliseconds, however, the Valve-On Time can be as
long as 6 seconds, depending on the desired dot size and fluid
properties.
Dispense Gap
The Dispense Gap is the distance between the substrate you are
dispensing on and the needle tip during dispensing. This distance is
one of the more common adjustments to optimize dispensing programs.
The units are in inches. Typically, the Dispense Gap is set to half the
dot diameter.
Number of Shots
This parameter controls how many shots of fluid will be dispensed at a
single location. When making larger dots, it is desirable to move the
needle up between shots at the same location. This parameter is set
greater than one (1) for more than one dot at the same location, and the
Multi-shot Delta is the vertical retract distance of the needle between
each shot. The units are in shots. Typically, this is set to one (1) unless
you are dispensing as described above.
Multi-Shot Delta
This is the height that the dispensing head retracts between multiple
shots at the same location. It is used in conjunction with Number of
Shots. The units are in inches. If using with Number of Shots, a typical
value is 0.010 inch.
Figure 6-13 During Dispense Dot Parameters