Sonel CMM-40, User Manual

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CMM-40
– USER MANUAL
61

Left auxiliary display the margin of initial value and the current
value. Right auxiliary display the initial reading. Main display
the reading after
REL test,

Press the EXIT button to exit the relative mode .
6.4 DATA HOLD function
The hold function freezes the reading in the display. Press the
HOLD key momentarily to activate or to exit the HOLD function.
6.5 PEAK HOLD function
The PEAK HOLD function captures the peak of AC voltage or
curent
– both AC and AC with a constant component (AC+DC, see
sec. 5.5). The meter can capture negative or positive peaks as fast
as 1 millisecond in duration.
To activate the function, hold the PEAK button for 2 s (signal-
isation with a long sound). After releasing the button the symbol
PEAK will appear. At the top of the display symbols will appear:
MAX in left auxiliary display, MIN in right auxiliary display.
The meter will update the display each time a lower negative, or
higher possitive peak occurs.
To exit the PEAK HOLD mode, press the EXIT button or choose
another measurement function.
Auto Power Off feature will be disabled automatically in this
mode.
Note:
While PEAK HOLD is active, autoranging is disabled, therfore it
is advised to start the function after connecting test leads to
the measurement point. Running PEAK HOLD before that may
cause overrange symbols to appear.
6.6 Display backlight
Press the key to turn the backlight on. The backlight will au-
tomatically turn off after SET time. Press the button to exit the
backlight on mode.