Signal

The data transferred directly from an instrument (ideally a detector) to Chromeleon, either analog via UCI Universal Chromatography Interface or digitally via a USB or LAN connection or via the RS-232 or another interface, is referred to as physical signals. If an instrument delivers several signals, these are also called channels; for example, two different wavelengths of a UV detector.

Calculated data, such as the arithmetic average of several channels, can represent a signal. This type of signal is called Virtual Signal.

Each signal has its own signal name that is assigned during instrument installation. The symbolic name of each signal must be clear. Some special signals have pre-defined signal names assigned to them.

The properties of a signal are determined via separate Signal Parameters. They can be modified manually or program-controlled (PGM File) at any time.

The measuring data of the different physical and virtual signals is stored in uniform raw data files.