Operating Instructions; Understanding True Rms; Auto Power Off Feature; Analog Bargraph Display - Circuit-test DMR-4350 User Manual

OPERATING INSTRUCTIONS

This meter comes with an exclusive patented technology featuring bright
LEDs indicating the correct input jack to plug-in the positive (red) test lead
for the selected function. The LED turns off after the test lead is completely
plugged in the correct jack. If the test lead is plugged in the wrong jack, the
LED will start flashing and the buzzer will start beeping.

AUTO POWER OFF FEATURE

This meter turns off automatically if more than 10 minutes elapses between
uses. The meter will give an audible sound before turning off.
To turn the meter back ON once it powers off, press the POWER button
twice, or press the HOLD button or RANGE button once.

ANALOG BARGRAPH DISPLAY

Besides the digital readout, this meter also indicates all the measurements
on the bargraph at the bottom of the display. The bargraphʼs length increases
and decreases with the measured value making it easy to view the changes
in the measurement immediately.
UNDERSTANDING AC ZERO INPUT BEHAVIOR OF TRUE RMS
When measuring the AC voltage and current, the meter is calculating the
input and converting them to the data that the LCD can display. The converter
needs a certain level of the input voltage to make the measurement. This level
is 5% of the ranges for this meter. So the non-zero digits that are displayed
on the meter when the test leads are open or shorted are normal. They do
not affect the specified AC accuracy above 5% of the ranges.
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