Voltech ATi User Manual page 327

Typically, Q is tested against a minimum value. A typical ferrite cored
transformer may have a Q >20. A specially designed low loss transformer may
have a Q >100.
Because Q is a ratio of two impedances it has no units.
If the "User Offset Enabled" check box is checked, a value can be entered into
the edit box. The value entered is then added to any results returned from the
AT tester.
V AT U M P 7-29
OLTECH I SER ANUAL AGE