j) Current measurement / Frequency (999.9 Hz to 9.999 kHz)
This measuring function is suitable for measuring mains current.
To prevent possible electric shock, fire or personal injury, switch off the power supply
of the circuit, and then connect the DMM to the
circuit in series before measuring the current.
If the range of the measured current is un-
known, always start at the highest measure-
ment range and switch down to lower ranges
if needed.
There are fuses inside “10 A” and “mA μA”
input terminals. Do not connect the test leads
to circuits in parallel.
A warning will sound when measured values
are out of range >10 A.
Measuring >5 A must only be performed for
max. 30 seconds and at 15 minute intervals.
1. Set the function dial to µA , mA , or A , the
corresponding unit of measurement will appear on
the display.
2. Short press the SEL/PEAK button to cycle through
“DC”, “AC”, “Hz”.
3. Connect the test leads to the terminals:
- Red test lead to the
or 10A max terminal.
- Black test lead to the COM terminal.
4. Connect the test lead probes to the circuit in series.
5. Read the value on the display.
- DC current: The polarity is shown together with
the measured value.
- AC current: Values are given in true RMS.
- Frequency: Measuring range is 999.9 Hz to 9.999
kHz (input amplitude ≥ range × 50 %).
6. When finished measuring, disconnect the test leads, power the circuit down and switch the
DMM power OFF.
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