B&K Precision 879B - Manual - Manual (Page 43)

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Note: When the timer has reached the configured
time, the meter will make an audible “beep” sound
continuously for 10 seconds before auto power-off.
To stop the “beep” sound, simply press any button to
resume operation and reset the timer count.
The available timer settings are: 5 minutes, 15
minutes, 30 minutes, 60 minutes, and off.
When the primary display shows “ AoFF”, push the
or button to select the timer setting. The
settings will be shown on the secondary display as
follows:
Table 2 - Auto Power-off Options
SECONDARY
DISPLAY
REPRESENTATION
5 5 minutes
15 15 minutes
30 30 minutes
60 60 minutes
OFF No timer. Manual
power off only
Default Setting: 15