User manual

e) Resistance measurement

Make sure that the circuit components, circuits and components to be

measured or any other measuring objects are voltage-free and discharged.

Proceed as follows to measure resistance:

- TurnontheDMMandselectthemeasuringrange„Ω“.

- InserttheredtestleadintotheΩtestsocket(10)andtheblack

test lead into the COM test socket (9).

- Check the test leads for continuity by connecting the test prods to

one another. The device should then register a resistance value

of approx. 0 - 1.5 ohm (inherent resistance of the test leads).

- In case of low-resistance measurements, press the REL key (11)

twice to prevent the inherent resistance of the test leads from

inuencingthesubsequentresistancevalue.Thedisplayshowsa

small delta symbol and the main display shows 0 ohm. Automatic

range selection (AUTO) is deactivated. The smaller upper display

shows the basic value (relative difference).

- Connect the test prods to the measuring object. The display

shows the measurement provided the measuring object is not

high-resistance or interrupted. Wait until the reading stabilizes. This may take several

seconds in the case of resistances >1 Mohm.

- The measuring range is exceeded or the circuit interrupted if the display shows „OL“ (for

overload). Puss the REL key again to deactivate the relative function and activate automatic

range selection.

- Remove the test leads from the measuring object and turn off the DMM after measurement.

When conducting resistance measurements, make sure that the measuring points

you touch with the test prods are free from dirt, oil, solder lacquer and the like. Such

circumstances may result in incorrect measurements.