ProStar 335 Photodiode Array Detector Control Manual - 49 -
Appendix
Peak Sensor Functions
This section describes the four different functions that activate the Peak Sensor relays of
the ProStar 335 Detector. These functions are named Peak Sense, Level Sense,
Timeslice, and Pulse Relay.
The Peak Sensor relay is only activated in the following states: ready, running and
stopped. When the acquisition reaches the end time Peak sense, Level Sense and Time
Slice functions are turned off.
Peak Sense Function
The Peak Sense function can be used when you want to control the sample collector to
collect the total sample represented by the total peak area of selected peaks, and collect
this sample in a single fraction.
When this function is activated, peak start, peak valley, and peak end activate the Peak
Sensor relay. It is necessary to adjust Width and S/N Ratio (signal to noise threshold) for
optimal results. Width adjusts the bunching rate for the peak sensing algorithm and works
best when adjusted to a value slightly less than the peak width (in seconds) at half height.
The S/N threshold can be used to suppress small peaks (use a higher S/N value, holding
Width constant). The Peak Sense function is turned on and off by time programming.
