20 GMC-I Gossen-Metrawatt GmbH
10 Resistance Measurement
➭ Be certain that the device under test is voltage-free.
Extraneous voltages distort the measurement results!
➭ Set the rotary switch to „Ω“.
➭ Connect the DUT as shown.
Zero Balancing in the 300 Ω and 3 kΩ Measuring Ranges
Cable and transition resistance can be eliminated with zero
balancing for measurements of small resistance values in
the in 300 Ω and 3 kΩ ranges :
➭ Connect the measurement cables to the instrument, and
connect the free cable ends to one another.
➭ Briefly press the ESC|FUNC multifunction key.
The instrument acknowledges zero balancing with an
acoustic signal and “
000.00 Ω” and the “ZERO” symbol
appears at the LCD. The resistance which was mea-
sured at the moment the key was activated serves as a
reference value (max. 2000 digits). It is automatically
subtracted from subsequently measured values.
➭ Zero balancing can be deleted:
– by pressing and holding the ESC|FUNC multifunction key,
after which deletion is acknowledged with a twice
repeated acoustic signal,
– by switching the instrument off.
See chapter 11 for continuity testing.
11 Continuity Testing for Resistance Measurement
The instrument generates a continuous tone in a range
from 0toapprox.10Ω if the “acoustic signal” function is
active, however only in the 0 to 310 Ω measuring range.
The limit value can be adjusted in the “Setup” menu:
SEt ↵ trig ↵ cont i ↵ cont i Ω ↵ XXX Ω ↵.
1000V
V
F °C
R
x
Voltage Drop
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