Teledyne ACCQPrep HP125 Installation And Operation Manual page 77

• I W & T
NITIAL ASTE
open a window from which you can view and modify
these settings. For the Initial Waste, type or select the
volume of eluent that is allowed to pass through the
column to the waste port after the sample is injected.
After this volume has been diverted, the system is ready
to collect peak or all fluids in the collection tubes. Use
this feature to conserve collection tubes by diverting all
fluids until the first peak is expected.
Time Windows can limit the fraction collection to
specific time durations of the run. To use time windows,
first enter a start time and an end time. Note that all
times are relative to start of the run, just following the
sample injection. Then choose a peak collection mode. If
you select Peaks, the module will collect fluid only when
the time window is active and a peak is present. If you
select All, the module will collect all fluid during the
time window regardless of the peak state. Detected
peaks will still trigger tube advances. You can define up
to three time windows.
Run Notes – Use this text entry box to enter comments or
notes for the run. These comments will be saved with the
run and will appear in TXT and PDF reports. Column
identification information is automatically placed in this
field.
Gradient Plot Area – The gradient plot area depicts the
current gradient profile that will be used for the run. The X-axis
of the plot displays the run time in minutes. The X-axis scale can
be adjusted by typing or selecting the Run Length. The left
Y-axis displays absorbance units and the right Y-axis indicates
the percentage of solvent B.
The gradient plot area also provides a convenient method to edit
the gradient curve. You can click and drag any of the points to
change the shape of the curve, or use the buttons at the bottom of
the plot area to insert and delete points. To zoom into a portion of
the graphic area, use "pinch zoom" and "swipe". Pinch zoom is
accomplished by placing two fingers on the graphics area and
moving them apart to zoom. Once zoomed in, moving both fingers
pans the display area. (A single finger touch is interpreted as a
selection rather than a pan function.)
The following controls appear in the Gradient Plot Area:
• I — Click this button to enable the gradient point
NSERT
insert mode. When this mode is active, click the gradient
curve to add a single point. You can then drag the new
point to any desired position. Click the I
ACCQPrep HP125
Section 5 PeakTrak
W — Click this button to
IME INDOWS
NSERT
button
5-13