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Backlighted display
Press the
SELECT
button for 1 second or more to turn on or off the display backlight
function. The backlight will also be turned off automatically after 30 seconds to extend
battery life.
Hold
The hold function freezes the display for later view. Press the
HOLD
button
momentarily to activate or to exit the hold function
Zoom 5x analog pointer (BM815 & BM817 only)
The Zoom mode analog pointer magnifies up to 5 times the regular analog bar graph
resolution to show minute signal changes with a single analog pointer. It is virtually
equivalent to the bar graph resolution of 5 X 50 = 250 segments.
