14 GMC-I
Messtechnik
GmbH
4.5
Resistance Measurements
Resistance is measured with DC
voltage from the 1.5 V mignon cell.
The table of measuring ranges in
chapter 5 gives the maximum mea-
suring currents for full deflection and
a battery voltage of 1.5 V.
Socket polarity is as follows:
Positive pole on socket „
⊥
“
Negative pole on socket „
Ω
“
➭
Set range switch, depending on
the measured value expected,
to one of the ranges
Ω
x 1 ...
Ω
x 1000.
➭
Plug in the test leads to sockets
„
⊥
“ and „
Ω
“.
➭
Short-circuit the test leads.
➭
Using the potentiometer knob, set the pointer of the measur-
ing mechanism to full deflection 0
Ω
. If it is no longer possi-
ble to set for full deflection or if the reading does not remain
constant after setting, the mignon cell is depleted or the pig-
tail fuse is defective.
➭
Connect resistance to be measured R
x
to the test leads.
