Fluke 9100A Operation Manual page 23

W h a t t o d o i f y o u p r e s s e d t h e w r o n g
function key: Once a function key is pressed, you
can modify the function fields using the keypad. If
you pressed the wrong function key, you will want
to immediately abandon the function. This can be
done quite easily.
Examine the ALPHA light on the left corner of the
keypad. The light turns on whenever the cursor
enters a field requiring an alphanumeric entry. If the
ALPHA light is off, you can simply press the
function key you wanted originally. The present
function display will be discarded and the new
function selections will be displayed. If the ALPHA
light is on, press the ALPHA key to turn the light off
and press the function key you wanted originally.
When the light is on, the keys are interpreted as
alphanumeric entries for the field where the cursor
presently resides.
W h a t t o d o i f y o u p r e s s e d t h e w r o n g
Press the right softkey and the old
(wrong) one will be discarded.