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14. Measuring/Testing – Observe unconditionally
a) Safety instructions relating to measuring/testing
• Never exceed the maximum permitted input values. Never touch circuits or circuit components if they
may carry voltages greater than 33 V/ACrms or 70 V/DC. This may cause a fatal electric shock!
• Before measuring, check the connected test leads for damage, such as cuts, tears and kinks. Never use
damaged test leads, as this may cause a fatal electric shock!
• When taking measurements, do not touch any exposed areas beyond the grip markings on the test
probes and the multimeter.
• Only connect the test leads that you require. For safety reasons, remove all unnecessary test leads from
the device before taking a measurement.
• Measurements in circuits rated at >33 V/AC and >70 V/DC must only be made by qualified and trained
personnel who are familiar with the relevant regulations and the associated hazards.
• Do not measure current on a circuit with a voltage of more than 600 V in CAT IV.
• Pay attention to the necessary safety information, regulations and protective measures for your own
safety.
b) Warn signals
• As general rule, [ OL ] (overload) indicates that the measuring range has been exceeded (This is not true for all
modes. Deviations from this rule are mentioned whenever applicable).
• When the measured voltage exceeds 30 V/AC, [ ] will appear on the display.
• When the measured current exceeds 600 A/ACV, [ ] will flash on the display and the multimeter beeps.
15. Measuring – Voltage
a) Measuring procedure
1. Determine the type of voltage you intend to measure, then read the
corresponding section in this chapter before you proceed.
2. Set the multimeter to the required voltage mode as indicated in the corresponding
section.
3. Insert the red test lead into the
socket (11) and the black test lead into
the COM socket (10).
4. Connect the two measuring probes in parallel to the object that you want to
measure (e.g. generator or circuit).
5. Refer to the corresponding section on how the measured values are displayed.
6. After measuring, remove the measuring leads from the measured object and
turn the multimeter off.
