Diagnostic Signals

What do you want to do?

• Select signals from the 2nd dimension

• Show instrument traces of 1st dimension

• Open the Signal Selection tab of the Sampling Table window.

• Adjust graphs

• Show cut annotations

• View details on cuts

• Select cuts

• Export a graph with data of the 2nd dimension

The Diagnostic Signals window

For diagnostic purposes, the full length chromatograms of the ²D detectors are displayed in the Diagnostic Signals window. Instrument Traces of the second dimension that are continuously recorded over the entire runtime are displayed as well (for example, flow, pressure, solvent ratio). Cut ranges are displayed and annotated with their cut number. Each cut section in the diagnostic signal corresponds to a ²D chromatogram. Flush periods are also displayed and marked with an F in the cut annotation header.

Figure Diagnostic signal: Detector response

Figure Diagnostic signal: Detector response

View and compare signals

By default, a diagnostic signal is plotted individually in a single graph. Select the signals in the Signal selection tab of the Sampling Table, where you also find the section Instrument Traces.

For a better comparison of the signals, adjust the display mode and scaling of the panels.

Figure Diagnostic signals: Detector response and solvent ratio

Multi-inject

If High-Resolution data is acquired in multi-inject mode, cut annotation headers are shown as follows:

• Cut annotation header 0: This section contains the pre-gradients of the multi-inject series where the solvent is injected from the loops.

• Cut annotation header with cut number range, for example 1...5: This section contains the analytical gradient of the multi-inject series.

  The tool tip shows HiRes (Multi-Inject).