The blink rate determines how often the dtterm window's cursor blinks. The default blink rate is 250 milliseconds. To change the cursor blink rate:
If the Global Options dialog box is not displayed, choose Global from the Options menu.
In the Blink Rate text field, type the value in milliseconds that you want.
Click OK at the bottom of the Global Options dialog box or press Return to save your selection and exit the window.
To save your selection and retain the window, click Apply.
The changes you make will be visible on existing dtterm windows; you don't have to start a new one.