The active measurement system is the measurement system used at runtime. You can select the system in either of two dialog boxes.

Specify the Active Measurement System in the:

	Project Properties Dialog box.
	Measurement System Properties dialog box.

Project Properties dialog box

1. Click Project>Properties on the Workbench menu bar.

2. Select the Settings tab.

3. Select Measurement Units.

4. Click Settings.

The Activate Measurement System dialog box opens displaying either of the following.

If:	Then:
A system was specified in the Measurement System Properties dialog box.	The system displays in the Active Measurement System field.
No system has been selected.	<None> displays in the Active Measurement System field.

5. (Optional) Click the drop-down list button to the right of the Active Measurement System field and select a new active measurement system.

6. Click Apply.

7. Click OK.

Result: If you select:

A measurement system	The Use at runtime check box in the Measurement Systems Properties dialog box is checked. The check boxes for all other measurement systems are cleared.
<None>	Only the base conversions are used.

Measurement System Properties dialog box

1. Expand the Advanced folder in the Workbench left pane.

2. Double-click Measurement Units.

The Measurement Unit–Configuration Window Opens.

3. Click Edit>System>Properties on the Measurement Unit–Configuration Window menu bar.

The Measurement System Properties dialog box opens.

The system that displays in the Display label field reflects the tab that is enabled in the Measurement Unit - Configuration window right pane.

If the Use at runtime checkbox is checked, the system:

Will be used during runtime.

Also displays in the Activate Measurement System dialog box.

4. Do any of the following.

Leave the settings unchanged.	Click Cancel.
(If not selected for runtime) enable runtime use for the system.	Check Use at runtime. Click Apply. Click OK.
(If selected for runtime) disnable runtime use for the system.	Clear Use at runtime. Click Apply. Click OK.

Result

If the Use at runtime checkbox is:	The system:
Checked and and the changes applied	Will be used during runtime. Also displays in an updated Activate Measurement System dialog box.
Cleared and the changes applied	Uses only the base conversions. Displays <None> in the Activate Measurement System dialog box.

More information

Measurement systems and units configuration.

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