User manual

16 GMC-I Messtechnik GmbH

8 Resistance Measurement

➭ Set the rotary switch to the 

position. Overload is indicated

if no device under test has been

connected: “0.L M”.

➭ Before connecting the device under

test, make sure that it is voltage-

free. Interference voltages distort

measurement results! Perform a

voltage test first if required.

➭ Connect the device under test as

shown in the diagram.

Zero Balancing in the 30  , 300  and 3 kMeasuring Ranges

Resistance at cables, as well as contact resistances, can be eliminated for the

measurement of low-resistance values in the 30 , 300  and 3 k ranges by

means of zero balancing:

➭ Connect the measurement cables to the instrument and connect the free

ends to one another (short circuit the test probes).

➭ Briefly press the FUNC key.

The instrument acknowledges zero balancing with an acoustic signal, and

“00

.00 ”, “ 000.00 ” or “0.0000 k”and the ZERO symbol appear at the

LCD.

Resistance measured at the moment the key is pressed is used as a

reference value (max. 2000 digits). This value is automatically subtracted

from all subsequently measured values.

➭ Zero balancing can be cleared:

– by pressing and holding the FUNC key, after which clearing is acknowledged

by a twice repeated acoustic signal,

– by switching the instrument off.

9 Continuity Testing

With the “acoustic signal” function activated, and exclusively in the 0 to 310 

measuring range, the instrument generates a continuous acoustic tone for

measured resistance within a range of 0 to approximately 2 .

➭ Turn the selector switch to the position. The and  symbols appear at

the LCD.

➭ Connect the measurement cables to the device under test.

Note!

Continuity testing is very fast (< 50 ms) and is suitable for locating

connections with poor contact (e.g. due to vibration) in automotive

service applications.

Voltage Drop