Checkline DFX-7 - Manual (Page 51)

DFX-7
Ultrasonic Flaw Detector
47
6) Press the UP and DOWN arrow keys to scroll through the transducer list
until the appropriate type is highlighted.
7) Press the ENTER key to select the transducer type and display overwrite
existing probe screen.
8) Press the OK key to overwrite the existing probe type with the newly
selected probe type. The zero probe screen will be displayed. Proceed to
the zero probe section that follows.