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6.1.2.
Measurement Procedure
1. Select the desired mode by means of the F1 key.
2. Connect the red and black test leads to B1 and B4 input terminals respectively
Connection of the test leads during LOWΩ test.
3. If the cables supplied with the instrument are not long enough for the measurement
you can extend the black cable.
4. Short-circuit the test leads making sure that the conductive parts of the crocodiles
make a good contact to each other. Press the START key. If the display doesn't
show 0.00Ω repeat the test leads calibration (see paragraph 6.1.1).
5. Connect the instrument terminals to the ends of the conductor under test (see
previous picture).
6. If the mode "RT+" or "RT-" was selected use the F3, F4 keys to set the
duration of the test.
7. Press the START key. The instrument will execute the measurement. In RT+/RT-
START
(Timer mode) you can press START key again if you want to stop the test before the
STOP
duration set is expired.
Never disconnect the test leads when the message "MEASURING" is
displayed.
6.1.3. Results of "AUTO" mode
At the end of the test, if
the average resistance
value Ravg is lower
than 5Ω the instrument
emits a double sound
signal
indicating
positive outcome of
the test and displays
one screen similar to the
screen alongside.
The displayed result can be stored pressing the SAVE key twice (according to
paragraph 9.1).
RED
BLAC
CAUTION
LOWΩ
1.05Ω
R+
1.07Ω
the
219mA
AUTO
0.11Ω
FUNC
CAL
Page 17 of 131
B1
B2
B3
K
Average resistance value
05.06.01
(Ravg)
R-
1.03Ω
Resistance
219mA
corresponding test current
when the polarities of test
leads swapped.
VR2250
B4
values
and
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