Amprobe AM-100 Digital-Multimeters - Manual (Page 9)

8
Relative zero mode
Relative zero mode allows the user to offset the meter consecutive measurements
with the displaying reading as the reference value. The display will now show readings
relative to the stored reference value. That is, display = reading - stored value. Press
the
button momentarily to activate or to exit relative zero mode.
Backlighted display
Press the SELECT button for 1 second or more to turn on or off the display backlight
function.
Manual or Auto-ranging
Press the RANGE button momentarily to select manual-ranging mode, and the meter
will remain in the range it was in, the LCD symbol turns off. Press the button
momentarily again to step through the ranges. Press and hold the button for 1 second
or more to resume auto-ranging mode.
Note: Manual ranging mode feature is not available in Hz & Cx functions.