Operation Manual
Elma BM 82Xs &
BM52Xs
Page 51
Backlighted display (525s, 521s, 829s only)
Press the SELECT button for 1 second or more to toggle the LCD backlight. The backlight
will also be turned off automatically after 32 seconds to extend battery life.
Beep-Jack™ Input Warning
The meter beeps as well as displays “InEr” to warn the user against possible damage to
the meter due to improper connections to the A, mA, or A input jacks when other function
(like voltage function) is selected.
Hold
The hold feature freezes the display for later view. Press the HOLD button momentarily to
toggle the hold feature.
Relative Zero mode
Relative zero allows the user to offset the meter consecutive measurements with the
displaying reading as the reference value. Practically all displaying readings can be set as
relative reference value including MAX/MIN/AVG* readings. Press the button
momentarily to toggle relative zero mode.
Manual or Auto-ranging
Press the RANGE button momentarily to select manual-ranging, and the meter will remain
in the range it was in, the LCD 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.
Note: Manual ranging feature is not available in Hz function.
Set Beeper Off
Press the RANGE button while turning the meter on to temporarily disable the Beeper
feature. Turn the rotary switch OFF and then back on to resume.
Auto-Power-off (APO)
The Auto-Power-off (APO) mode turns the meter off automatically to extend battery life
after approximately 30 minutes of no activities. Activities are specified as: 1) Rotary switch
or push button operations, and 2) Significant measuring readings of above 512 counts or
non-OL readings. In other words, the meter will intelligently avoid entering the APO
mode when it is under normal measurements.. To wake up the meter from APO, press the
SELECT, RANGE, RELATIVE or HOLD button momentarily or turn the rotary switch OFF
and then back on. Always turn the rotary switch to the OFF position when the meter is not
in use
Disabling Auto-Power-off
Press the SELECT button while turning the meter on to temporarily disable the Auto-
Power-Off feature. Turn the rotary switch OFF and then back on to resume.