Units

This page of the Circuit Settings dialog box is opened when you select Circuit - Settings from the project editor main menu, then click on Units in the sidebar menu of the dialog box. This section allows you to select the measurement units for your circuit.

Unit Definitions: There is a drop list for each type of unit in the project file, with the presently selected unit displayed. Select the desired unit for each type from the appropriate drop list. Whichever unit is selected in this dialog box is displayed in other dialog boxes where these types of values are entered.

Save these units for new project defaults: Clicking on this checkbox saves any selections you make as the default for all new projects. Note that the setting of the two radio buttons below, Maintain Physical and Maintain Value, are NOT saved.

Maintain Physical: If you choose to keep it the same physical size, all distances are converted to the new unit. For instance, if a square is 10 mm on a side and you change the unit to centimeters, it now measures 1 cm by 1 cm.

Maintain Value: If you choose to allow the circuit to change size, distances retain the same numerical value, but the unit changes. For example, if a distance is 10 mm and you change the unit to meters, the distance is now 10 meters. Click the appropriate checkbox before applying the units.

The Maintain Value option is particularly useful is you have already entered a significant portion of your circuit with the wrong length unit selected.