Notes:
*
Input impedance: 10 MOhm in parallel with less than 100 pF.
*
The meters high input sensitivity produces a wandering effect, when the test leads are not
connected to any circuit. This is normal and an accurate reading will appear, when you connect
the test leads to a circuit to be measured.
6.3. Measuring DC/AC Currents
Warning !!
Never attempt to measure currents in circuits with voltages over 250 volts DC/AC. It may damage
the instrument and expose yourself to a severe shock hazard. A severe faire hazard and short circuit
danger exits if you apply a voltage with high current capability to this terminal. The 10 A-terminal is
fuse protected. Never measure currents exceeding 10 A. When using this range with high currents,
keep the duty cycle to 10 seconds on load and 15 minutes off load.
Follow these steps to measure AC/DC current:
1. Disconnect all power sources from the measurement circuit.
2. Set Function-Switch to the desired position (µA, mA or A)
3. Press MODE and AC appears for AC current measurement.
Press again to change to “DC”.
4. Plug the black test lead into the COM-terminal and the red test lead into the µA/mA or 10 A-
terminal depending on the range your selected.
5. Connect the test leads in series with the load or circuits.
6. Power on measurement circuit and read the measuring value from the LCD-display.
Notes:
*
If you do not know what the current is, connect the circuit to 10 A input-terminals first to see, if
you have safe level for the mA input terminal. Use A terminal for current up to 220 mA.
*
When measuring current, the meter´s internal shunt resistors develop a voltage across the
instrument´s terminals so called "burden voltage". This voltage is very low, but it may affect
precision circuits and measurements.
*
If you set the function DC current, the Symbol "-" appears or disappears to indicate the polarity of
the measured value.
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