BM869s
46
_v61010-2-033:2019
Relative Zero mode
Press the
button momentarily to toggle relative zero mode. It allows the user to offset
the meter consecutive measurements with the displaying reading as the reference value in
the main display. Practically all displaying readings in the main display can be activated as
relative reference values including MAX/MIN/AVG readings.
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
select an adjacent range. Press and hold the button for 1 second or more to resume auto-
ranging.
Note: Manual ranging feature is not available in Hz function. Hz Sensitivity will be changed
instead where available.
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 17 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.
MAINTENANCE
WARNING
To avoid electrical shock, disconnect the meter from any circuit, remove the test leads
from the input jacks and turn OFF the meter before opening the case. Do not operate with
open case. Install only the same type of fuse or equivalent
Calibration
Accuracy is specified for a period of one year after calibration. Periodic calibration at
intervals of one year is recommended to maintain meter accuracy.
