ProStar 701 Fraction Collector Control Manual
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03-914947-27:2
option, complete the three fields
Slope sensitivity, Peak
Width
and
Detector Signal.
Level:
peaks are sensed by their absolute level above
baseline. This option does not involve the collection of
the entire peak, but only of the part that rises above the
threshold level (defined in the
Threshold Level
field). This
mode of collection allows collecting only the most
concentrated portion of the peak. Collection of peaks is
based on percentage of full scale height. If 0% is defined
in the
Threshold level
field, the Level feature is canceled.
If selecting this option, complete the two fields
Detector
Signal
and
Threshold Level.
User can combine
Slope
or
Level
collection modes with
Time
by
using logical
AND Time
or
OR Time
. If
AND Time
is selected,
the peak will only be collected when
both
a time window is
active, and the slope or level detection conditions are met. If
OR
Time
is selected, the peak will be collected if
either
the time
condition
or
the slope or level conditions are met.
If
Slope
and
Level
are selected together, they are always linked
with the
AND
logical operator.
Slope sensitivity
: define the range of sensitivity, two choices are
available: Normal and High
.
The Normal sensitivity requires a
larger slope change before indicating a peak. The High
sensitivity should be used with smooth baselines to collect the
maximum sample of broad based peaks or smaller peaks.
Peak Width
: it is the expected average peak width at baseline.
Values are proposed in the scrolling list.
Detector Signal
: it is the detector output value. Three choices
are available: 10mV, 100mV and 1 V.
Threshold level
: it is the percentage (0 to 100%) of the full scale
height since which peaks are collected.
