ST VA40 - Battery Saver; Relative Measurement Mode; True RMS Measurement

6000 COUNTS DIGITAL MULTIMETER
USER'S MANUAL
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NOTE: If you manually change the measurement range after entering the Data Hold modes, the Meter exits this
mode.
2. To exit the manual ranging mode, press and hold down RANGE key for two seconds. The Meter returns to the
autorange mode and AUTO is displayed.
3.1.3 Battery Saver
The Meter enters the "sleep mode" and blanks the display if the Meter is on but not used for 30 minutes.
Press the
key or rotate the rotary switch to wake the meter up.
To disable the Sleep mode, hold down the SELECT key while turning the meter on.
3.1.4 Relative measurement mode
The Meter will display relative measurement in all functions except frequency.
To enter and exit the relative measurement mode:
1. With the Meter in the desired function, touch the test leads to the circuit on which you want future measurement to
be based.
2. Press REL△ key to store the measured value and activate the relative measurement mode. The difference
between the reference value and subsequent reading is displayed.
3. Press REL△ key for more than 2 seconds to return the Meter to normal operation.
3.1.5 TRUE RMS measurement
All the measurement values of the true RMS meter on the AC voltage and AC current are true root-mean-square
values. The basic meter can only measure the AC average value.