6. How to make measurements
Warning!
To avoid possible electric shock, instrument damage and/or equipment damage, do not attempt to take any
voltage measurements if the voltage is above 1000 V DC / 750 V AC.
6.1. Measuring DC Voltage
WARNING!
Do not try to measure a voltage greater than 1000 Volts DC. Since it may damage your meter and expose
yourself to a servere shock hazard.
Do not touch circuits or a part of circuits when measuring voltage about 25 V
rms
AC or 35 V DC.
Follow these steps to measure DC voltage:
1. Set the rotary selector to the desired position and the range as required for the voltage level to be
measured. If you do not know the voltage level, start with the rotary selector set to the highest voltage
position and reduce the setting as needed to get a reading.
2. Plug the black test lead into the meter’s COM terminal and the red test lead into the V/
Ω
terminal.
3. Connect the test leads to the DC voltage source you want to measure.
Notes:
* If polarity is negative, - appears on the left of display.
* For the most accurate measurement, select the lowest possible voltage range without getting an overload
reading.
* Input Impedance: 10 M
Ω
on all ranges.
6.2. Measuring AC Voltage
Warning!
Do not try to measure a voltage greater than 750 Volts AC since it may damage your meter and expose
yourself to a severe shock hazard.
Follow these steps to measure AC voltage:
1. Set the rotary selector to the desired position. Select the range as required for the voltage level to be
measured. If you do not know the voltage level, start with the rotary selector set to the highest voltage
position and reduce the setting as needed to get a reading.
2. Press SET-button (9) to select AC.
3. Plug the black test lead into the meter’s COM terminal and the red test lead into the V/
Ω
terminal.
4. Connect the test leads to the AC voltage source you want to measure.
Notes:
* Input impedance: approximately 10 M
Ω
in parallel with less than 100 pF.
* Frequency response: 40 Hz to max. 20 kHz.
* The meter’s high input sensitivity produces a wandering effect when the test leads are not connected to
any circuit. This is normal and accurate reading will appear when you connect the test leads to a circuit.
6.3. Measuring DC/AC Current
Warning!
Never measure currents in circuits with voltages over 250 V DC/AC. It may damage the meter and expose
yourself to a severe shock hazard. A severe fire hazard and short circuit danger exist if you apply a voltage
with high current capability to this terminal. The 20 A terminal is fuse protected. Never measure currents
exceeding 20 A. When using this range with high currents, keep the duty cycle to 30 seconds on load and 15
minutes off load.
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