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Press •   the LEG to change the number of displayed Legs (which  
represent each pass of the ultrasound through the test piece). 
Press •  , UT, BASE, DISPLAY DELAY to adjust the Display Delay
Press •   to set the Gain Increment Value -- The amount of gain 
change with each click of the Gain Knob. Options include a user-
dened gain step and a gain knob LOCK. Press and hold   to 
switch between analog and digital gain.