Sampling Rate

The number of stored signal values per second is referred to as the sampling rate (or Data Collection Rate). The maximum of the stored values corresponds to the number of values generated per second and depends upon the device; for example, Dionex UVD 170S/340S Detectors = 100, UCI Universal Chromatography Interface = 100, 3D field = 10, and Dionex AD25, PDA, PDA-100, and PDA-3000 Detectors = 10.

The reciprocal value (the time interval between data points) is referred to as the Step (Dionex UV detectors = 0.01, UCI = 0.01, 3D field = 0.1, and Dionex AD25, PDA, PDA-100, and PDA-3000 detectors = 0.1).

 Tip:

For many Dionex detectors, the Data Collection Rate command determines the number of data points collected per second. At the start of data acquisition, the step value is automatically set to the reciprocal value of the selected data collection rate. For other Dionex devices, only the step value is set and a separate Data Collection Rate command is not used. For more information, refer to Practical Tips for Device Control  Defining Step and Average.