User manual

j) Frequency measurement

The DMM can be used to measure the frequency of a signal volt-

age (supports frequencies from 10 Hz to 10 MHz). The maximum

input is 30 Vrms. This mode is not suitable for taking measure-

mentsonmainsvoltages.Observetheinputspecicationsinthe

technical data.

Proceed as follows to measure frequency:

- Switch the DMM on and select “Hz” mode. “Hz” will appear on

the display.

- Insert the red test lead into the Hz measurement socket (G)

and the black test lead into the COM measurement socket (H).

- Connect the two measuring probes to the object that you want

to measure (e.g. signal generator or circuit).

- The frequency and corresponding unit will be displayed.

- After taking a measurement, remove the leads from the meas-

ured object and switch the DMM off.

k) Resistance measurement

Ensure that all objects that you want to measure (including circuit components, circuits and com-

ponent parts) are disconnected and discharged.

Proceed as follows to measure the resistance:

- SwitchtheDMMonandselectthe“Ω”measurementmode.

- InserttheredtestleadintotheΩmeasurementsocket(G)and

the black test lead into the COM measurement socket (H).

- Check the test leads for continuity by connecting both measur-

ing probes to one another. The multimeter should then show a

resistancevalueofapprox0-0.5Ω(inherentresistanceofthe

test leads).

- For low-impedance measurements of <600 Ω, hold down

the “REL” button (C) for approximately one second when the

measuring probes are short circuited. This ensures that the

inherent resistance of the test leads does not affect the resist-

ancemeasurement.Thedisplayshouldshow0Ω.Autorange

is thereby disabled.

- Connect the measuring probes to the object that you want to

measure. The measurement will be indicated on the display

(provided that the object you are measuring is not highly re-

sistive or disconnected). Wait until the display stabilises. This

maytakeafewsecondsforresistancesgreaterthan1MΩ.

- “OL” (overload) indicates that the measurement range has

been exceeded or that the circuit is broken.