LC Packings Probot 161403, User Manual

Page: 61 / 118

Installation and Getting Started
User’s Manual Probot
D960R3
2-41
On default the Probot table moves to its lowest position (0.0 mm) for all
horizontal movements. This means, when moving from one spot to the next the
table first moves down to its lowest position, and then it moves up upon arrival
at the new XY position. This movement may take several seconds.
The ‘spotting time’ is defined as the actual time required to spot and the time to
move the table:
t
spotting
= t
movement
+ t
on spot
To reduce the time to move the table to a minimum, a ‘special Z coordinate for
horizontal movements’ can be programmed so that the table will move all the
way down. This table height (Z-axis) is used during movements. It is defined as
the height above the lowest table position (0.0 mm).
In addition to the Z movement, XY movements can be optimized by choosing an
appropriate spotting pattern (e.g. meander vs. saw tooth pattern).
To define the ‘special Z coordinate for horizontal movements’, the table is moved
to the desired travel height using the Manual Drive Panel (Section 2.8.5 A):
m) Carefully adjust the Probot table height with the panel (FIGURE 2-43, and
then choose the Read current Z button. The current table height will now be
stored in the application.
CAUTION
Caution: The Z-coordinate for in-task movements must ALWAYS be lower than
the Collect group height . If it is not lower, you may scratch your MALDI target.
Note: As basic rule for the collection of Nano flow rates, the Z-coordinate should
be 2 mm lower than the spotting height (Section 2.7.3)
n) Choose Next for the last step of the wizard.(FIGURE 2-44).