Description of Controls, Indicators, and Symbols
The Backlight button. Press the Backlight button to
toggle the backlight ON or OFF. The backlight will
remain on for 9.5 to 10.5 minutes. See Backlight On/Off
on page 44.
The Up Arrow button. Press the Up Arrow button
sequentially to increase the parameter under adjustment
by one increment. Press and hold the Up Arrow button
for more than three seconds to cause the increment to
repeat.
Press the Up Arrow button during normal operation to
increase the pulse beep volume.
The Power button. Press the Power button to toggle the
NPB-40 power ON or OFF. The Power button has a
raised protrusion (bump) at its center and a gloss surface
finish for tactile differentiation.
Description of the Display and Indicators
16