User manual

b) Voltage measuring “V”

Proceed as follows to measure direct voltages “DC” (V )

and alternating voltages “AC” V ):

Switch on the DMM and select measuring range “V”. For low

voltages up to 100 mV, select “mV”. Observe that the maximum

values (also see chapter Technical Data) must not be exceeded

while measuring.

- PlugtheredmeasuringlineintotheVmeasuringjack(7)and

theblackmeasuringlineintotheCOMmeasuringjack(8).

- Connectthetwomeasuringprodstotheobjecttobemeas-

ured (battery, circuit, etc.). The red measuring prod indicates

the positive pole, the black measuring prod the negative pole.

- The polarity of the respective measured value is indicated on

the display together with the current measured value.

If a minus “-” appears in front of the measured value for

direct voltage, the measured voltage is negative (or the

measuring lines are swapped). The voltage range “V DC/

AC” has an input impedance of >10 MOhm.

- Alwaysremovethemeasuringlinesfromtheobjecttobemeasuredaftercompletionofthemeasurementand

switch off the DMM.

c) Low-Pass Filter (HFR = High Frequency Reject)

Never use the low-pass filter option to test for presence of dangerous voltages! The present volt-

ages may be higher than indicated.

Always perform voltage measurement without the filter first to recolonise any possible dangerous

voltages.

This function can only be activated in the alternate voltage measuring range.

TheDMMisequippedwithanalternatingcurrentlow-passfilter.Thisisanalternatingvoltagemeasurementrouted

through a low-pass filter that blocks undesired voltages exceeding 800 Hz.

SwitchontheDMMandselectmeasuringrange“V”.Forlowvoltagesupto100mV,select“mV”.

- PlugtheredmeasuringlineintotheVmeasuringjack(7)andtheblackmeasuringlineintotheCOMmeasuring

jack(8).

- Pressthe“HFR”button.Thedisplayshows“HFR”.

- Connectthetwomeasuringprodstotheobjecttobemeasured(battery,circuit,etc.).Theredmeasuringprod

indicates the positive pole, the black measuring prod the negative pole.

- The polarity of the respective measured value is indicated on the display together with the current measured value.

- Pressthe“HFR”buttonagaintodeactivatethelow-passfilter.