B&K Precision 879B - Manual - Manual (Page 17)

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color. Each color has a specific representation, as
described below:
White – With the exception of the
button, all white colored labels
represent the primary function of that
button; meaning that function will be
set or configured upon pressing it.
Blue – Some of the buttons have a blue label
underneath a white label. This means
the function indicated by the blue
label will be set or configured if that
button is pressed and hold down for 2
seconds.
Yellow – There are total of 3 buttons with
yellow labels. They are
. These functions are
exclusively for use when entering
UTIL menu only. See “Utility Menu”
section for details.