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2. DC Current Measurements (see diagram 3)
1. Turn rotary switch to “A
” current measurement.
2. Insert the red test lead into the “mA” or “10A” terminal, and the black test lead into the “COM” terminal, Connect the test leads
across with the object being measured. The measured value shows on the display.
Warning:
•
Pre-requisites: Turn off power to the circuit before the connections between the test leads across with the object
being measured.
• Selecting the correct terminal input and turn the rotary switch to select the measuring function. In case of no any
idea on the value input of the current, just simply test from the high value to low one.
• Fuses are located on mA and 10A terminal input.
• Never attempt the test lead connect to any circuits especially on the power supply terminal and may be hurt.
• For the safety purpose, less than 10 seconds is for each measurement duration and keep 15 minutes duration for
next measurement during the current measurement over 5A
3. Resistance Measurements (see diagram 4)
1. Turn rotary switch to “Ω“ohm measurement.
2. Insert the red test lead into the “Ω” terminal, and the black test lead into the “COM” terminal, Connect the test leads across
with the object being measured. The measured value shows on the display.
•
The LCD displays “OL” indicating open-circuit for the tested resistor or the resistor value is higher than the
maximum range of the meter.
• To maintain the resistance measurement accuracy, discount circuit power and discharge all the high voltage
capacitors during the measuring resistance.
•
Thetestleadscause0.1Ω~0.2Ωresistancevariationduringthemeasurement,inordertoobtainprecisionreading
in low-resistance measurement. Need to make the short circuit on the test leads and mark the measurement value
which show on LCD display. Then deduct this variation value on the measurement value which come the meter,
measurement value obtained from LCD display-Variation value on test leads = The actual measuring value.
•
IfΩreadingwithshortenedtestleadsisnotlessthanorequalto0.5Ω,checkforloosetestleads,incorrectfunctions
election or others.
•
Forhigh-resistancemeasurementgreaterthan1MΩ,itisnormaltotakeseveralsecondstoobtainastablereading
with short test leads for measurements.
• Do no input the higher than DC 60V and AC 30V voltage to prevent any damage and accident.