TACKLIFE DM01M, User Manual

Page: 10 / 83

- 08 -
3.1.3 Auto power off
If no operations are made in 15 seconds following the initialization, the meter will sound to remind the
operator to automatically cut off power supply and enter the state of dormancy. The meter can be
rebooted when the operator presses any key in the auto power off mode.
3.2 Measurement guidelines
3.2.1 Measurement of AC voltage and DC voltage
To avoid any electric shock and/or damage to the meter, do not attempt a voltage measurement
if the voltage (valid value) is 1,000V for DC current or 750V for AC current.
To avoid any electric shock and/or damage to the meter, don't attempt to impose between any public
terminal and ground any voltage whose valid value is over 1,000V for DC current or 750V for AC current.
• The meter provides DC voltage measuring ranges as follows: 600.0mV, 6.000V, 60.00V, 600.0V and
1000V, and AC voltage measuring ranges: 6.000V, 60.00V, 600.0V and 750V.
• Measurement of AC voltage or DC voltage
1. Turn the rotary switch to the position V or V.
2. Connect the test lead in black and test lead in red to COM input socket and V input socket
respectively.
3. Use another two ends of the test lead to measure the voltage of the circuit to be measured. (In
parallel connection with the circuit to be measured)
4. Read the measured voltage value on LCD screen. When DC voltage measurement is attempted,
the display unit will show the voltage polarity of the circuit connected to the pen-shaped meter in red.
Notes:
* Within the measuring range of DC voltage of 600mV and AC voltage of 6V, even if there is no input
or no connection to the test lead, the meter will display some information. In this situation, press
short circuit “V
－
Ω” and “COM” terminal to reset the meter to zero.
* Within the AC voltage function, press the key "SEL" to measure the frequency of the AC voltage
source. Please refer to the relevant part for frequency measurement.
* The value of the AC voltage measured with this meter is True RMS (root mean square). These
measurements are accurate for sine wave and other waves (without DC offset), square wave,
triangular wave and step wave.
3.2.2 Electric resistance measurement
To avoid the meter or the measured equipment from damage, do not attempt a resistance
measurement unless the operator has already cut off all power sources for the circuit to be measured
and fully discharged all high-voltage capacitors.
• Ohm is the unit of electric resistance (Ω).
•
The measuring ranges of electric resistance of this meter are 600. 0Ω , 6.000k Ω , 60.00k Ω , 600.0k Ω ,
6.000MΩand 60.00MΩ,