OpenLab CDS Online Signals Partial or Missing Display During Acquisition

Answer

This Information Applies To: Agilent OpenLab CDS software

Issue

The online signal does not appear in the online signal window while data acquisition is running. Alternatively, only part of the online signal is displayed and will not continue during the rest of the run.

Background

The instrument may still be acquiring and a performing data analysis when the signal is not being displayed (Figure 1) or the online signal stops during the run (Figure 2). 

Figure 1: The online signal does not appear in the window (red box).
 

  
Figure 2: The online signal does not continue to display during the run (red box).

Steps to Follow

1. Reset during the run 
   
   1. In the Online Signals window, Click the drop arrow of the Autoscale all panes icon, then click Strip Chart or Start from 0.0 (Figure 3)

      
      Figure 3: Resetting the online signal from the Autoscale all panes icon

   2. Check that online signals are moving again. If the online signals do not start moving, proceed to step 2.
       
2. Restart data acquisition
   1. After the run ends, close the Acquisition software.
   2. Open the Acquisition software again. If the online signals do not start moving, proceed to step 3. 
      
      
3. Reset the connection to the instrument
   

   1. Close the Acquisition software for the instrument with the signal issue.

   2. Open the OpenLab Control Panel. On the left side pane, select the Instruments tab, then click the desired instrument.

   3. In the top ribbon, click the Close Connection button (Figure 4). Wait for the confirmation dialog box and click OK.

      
      Figure 4. Closing the OpenLab CDS instrument connection
      1. Close Connection button

   4. Launch the Acquisition software for the selected instrument and confirm that the online signal is working. If the issue continues, contact your local Agilent Service Representative

Learn how to effectively operate your Agilent CDS software: Agilent 8890 GC with OpenLab CDS Agilent 1260 Infinity LC Systems with OpenLab CDS e-learning paths available from Agilent education