POWERFIX PDM 300 B1
7.6 Function generator
Ensure that all circuit elements, circuits and components to be measured and other test objects
are completely switched off and discharged. Otherwise, the multimeter could be damaged.
Connect the black test lead to the COM jack [4] and the red test lead to the Ω V mA
Set the range selector switch [3] to the
Connect the test probes [6] to the test object.
The 1kHz square wave signal is used, among other things, to check and repair headphones,
amplifiers and other electronic devices and components.
7.7 Resistance measurement
Ensure that all circuit elements, circuits and components to be measured and other test objects
are completely switched off and discharged. Otherwise, the multimeter could be damaged.
Connect the black test lead to the COM jack [4] and the red test lead to the Ω V mA
Set the range selector switch [3] to the desired range in the Ω measuring range.
Connect the test probes [6] to the test object.
The measurement result is then indicated on the display [1].
For resistances > 1MΩ, the measurement may take a few seconds. In this case, wait until the
measured value has stabilised.
For measurements of low resistances (200Ω range), the resistance of the test leads can lead to
a distorted result. To avoid such an error, note the value of the measurement for short-circuited
test probes and deduct this from the value of the actual measurement.
7.8 Continuity test
Ensure that all circuit elements, circuits and components to be measured and other test objects
are completely switched off and discharged. Otherwise, the multimeter could be damaged.
Connect the black test lead to the COM jack [4] and the red test lead to the Ω V mA
Set the range selector switch [3] to the
Connect the test probes [6] to the test object.
If the resistance is less than approximately 30Ω, the buzzer sounds and the measurement result is
indicated on the display [1].
58 - English
position.
position in the Ω measuring range.
jack [5].
jack [5].
jack [5].