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CatWalk XT 11 - Set Up an Experiment - Define the Trial List

Last updated: Jul 26, 2026

Define the Trial List

In the Trial List you can enter a number of variables for the trials you plan to acquire.

Open the Trial List

Do one of the following:

  • Choose Setup > Trial List.
  • Click the Trial List icon.
  • In the Experiment Tasks window, select Open Trial List.
  • In the Experiment Explorer, under Setup, double-click Trial List.

Add Trials

  1. Click the Add Trial(s) button.
  2. In the Add Trial(s) window, enter the Number of Trials you want to add for each time point and treatment group you defined in the Experiment Settings and click Add. It is advised not to add more than 500 trials per experiment. Repeat this step for each time point and treatment group combination.
  3. If necessary, re-assign a treatment group to a trial or animal by selecting a treatment group from the list.
  4. You can now define the following user variables:
    • Animal – Click a cell in the Animal ID column to change the animal ID.
    • Time Point – Select a time point from the predefined list in the Time Point column.
    • Description – Optionally, enter a description. This description is also exported to an export file with the statistics and can be used as an independent variable.

The trial name (Trial0001, Trial0002, etc.) is used as an ID to identify individual trials. Trial names must be unique. You can edit trial names.

System Variables

The Trial List also displays the following system variables for each trial:

  • Acquisition Status – Shows the acquisition status of a trial. The status can be Planned, Partially Acquired, or Acquired.
  • Total Runs – Shows the number of acquired runs.
  • Compliant Runs – Shows the number of acquired runs that meet the run criteria.
  • Classification Status – Shows the classification status of the acquired runs of a trial. The status can be Not Classified, Partially Classified, or Classified.

Delete a Trial

Do one of the following:

  • In the Trial List, select the trial you want to delete and click the Delete Trial(s) button. You can select multiple trials by selecting the first trial, pressing and holding the Shift key, and selecting the last trial. To select multiple individual trials, press and hold the Ctrl key and select the trials.
  • In the Experiment Explorer, right-click a trial and select Delete.

Deleting a trial cannot be undone. It is not possible to delete an active trial.

Sort the Trial List

You can sort each column of the Trial List by clicking its column header. Although you can sort the Trial List and edit trial names, in Acquisition the order of trials is always the original order in which the Trial List was created.

Copy and Paste Contents in the Trial List

  1. Select the contents of the cell, then right-click and select Copy (Ctrl+C).
  2. Click the cell where you want to paste the text, right-click and select Paste, or press Ctrl+V.

Note that you cannot copy and paste multiple cells from Excel.

Experiment Setup Profiles

You can save the current Experiment Settings, time points, treatment groups, and Trial List to an Experiment Setup profile. You can have multiple Experiment Setup profiles. When you create a new experiment, you select an Experiment Setup profile so that those settings are copied to the new experiment without the trials.

Add an Experiment Setup Profile

  1. Do one of the following:
    • In the Profiles Explorer, right-click Experiment Setup Profiles and select Add New Profile.
    • Choose Profiles > Experiment Setup Profile > New.
  2. Select "Create an Experiment Setup Profile from the current experiment." When you select "Create a Blank Experiment Setup Profile," a profile is created with default experiment settings and no time points, treatment groups, or trials.
  3. Enter a name and click Add.
  4. If necessary, make adjustments and click OK to store the profile.

Open an Experiment Setup Profile

Do one of the following:

  • In the Profiles Explorer, right-click an Experiment Setup profile and select Open.
  • Choose Profiles > Experiment Setup Profile > Open. Next, select a profile from the list and click Open.

Duplicate an Experiment Setup Profile

  1. In the Profiles Explorer, right-click an Experiment Setup profile and select Duplicate.
  2. Enter a name and click OK.

Rename an Experiment Setup Profile

  1. In the Profiles Explorer, right-click an Experiment Setup profile and select Rename.
  2. Type in a name and press Enter.

Delete an Experiment Setup Profile

Do one of the following:

  • In the Profiles Explorer, right-click an Experiment Setup profile, select Delete, and click Yes.
  • Choose Profiles > Experiment Setup Profile > Delete. Next, select a profile from the list and click Delete.

Set Your Preferences

  1. Choose File > Preferences or click the Preferences icon on the toolbar.
  2. Click the tab that applies and make the necessary changes:
    • General – Choose the Distance Unit (Millimeters, Centimeters, or Inches) and the Number of Decimals shown for Numbers, Times, and Percentages.
    • Folders and Auto Save – Optionally, change the default location of new experiments, new backup files, and the export folder. Here you can also turn Auto Save on or off and set the auto save interval.
    • Colors – Choose the colors in which paws and other body parts are displayed in the Print and Timing View.

Planning a new study?

We can advise on the optimal hardware and software configuration for your upcoming research project.

Noldus is here to assist you throughout the whole process.

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