Figure 6–6: The new pulse mode 2 with freely programmable t,E table; in red, the sampling
of data for acquisition
The measurement time interval in which the current is measured, marked by Begin and End
markers, is freely programmable in the pulse table. This new pulse mode extends the application
areas of the detector to analysis using PAD detection with more sophisticated potential
waveforms, as in amino acid analysis.
Pulse mode 2 is not available in manual operation using keyboard/display. The new pulse mode
can only be used through software control (Empower). When disconnecting the device from the
CDS, it automatically switches back to the standard pulse mode, and a warning message
appears.
6.4 Scan mode
For method development, the scan mode is available. In scan mode, the cell potential is swept
between two preset values (E1 and E2) using a certain scan speed (in mV/s), and the current is
measured during the sweep. This method can be used to study REDOX behavior and to
determine the optimum detection potential of a pure analyte dissolved in mobile phase.
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