Overflow is again displayed with “1”. With the measure-
ment or with the overflow indication the minus sign may
additionally be displayed.
4.3 Resistance measurement
●
Never measure a resistor when voltage is applied and
always measure it separately, otherwise the measure-
ment will be inaccurate. For this purpose, solder it out of
the circuit, if required.
Choose a suitable resistance range with the rotary switch.
With resistance measurements, test cables which are not
connected represent an infinitely high resistance. This is
displayed as overflow “1”.
4.4 Continuity buzzer
●
However, never perform a continuity check when voltage
is applied, otherwise the measurement will be inaccurate.
The switch position buzzer is used for checking conti-
nuity and contact resistance. With values less than approx.
100 Ω the continuity buzzer will sound.
4.5 Diode testing
●
Never measure a diode when voltage is applied and
always measure it separately, otherwise the measure-
ment will be inaccurate. For this purpose, solder the
diode out of the circuit, if required.
Choose the position at the rotary switch. When placing
the test tips at the diode in forward direction, the diode for-
ward voltage is shown. The positive pole of the measuring
voltage thereby is at the red measuring cable. The display will
show the forward voltage up to 2 V at a test current of 1 mA.
With 0 V displayed, the diode has a short circuit. With “1”
displayed, the diode has a forward voltage higher than 2 V
GB
17
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