F Resistance measurement
A
Attention!
. . . . . . .
Ensure that all circuit elements, circuits and
. .
ponents and other objects to be measured are ab-
solutely voltage-free.
To perform a resistance measurement, proceed as follows:
1.
2.
3.
4.
Connect the black test lead to the COM socket and the red test
lead to the V/Ohm socket.
Set the rotary switch to “Ohm
The “Auto-Range” feature
automatically matches the measuring input to the resistance pre-
sent, i.e. the required measuring range selects itself
Check the test leads for continuity by connecting both test pro-
bes together. As a result a resistance value of about 0.1 to 0.2
Ohm appears (= resistance of the test leads).
Now connect the measuring probes to the object to be measu-
red. If the expected resistance of the object to be measured
less than about IO Ohm, the resistance of the test leads must be
subtracted from the measured value.
Notes!
When resistance measurements are performed, ensure that the
measurement points which are to be touched with the test pro-
bes are free from dirt, oil, solder flux or similar. Such condi-
tions can distort the measured value.
With resistances greater than approx. 1
it can be that
the display will take some time to “stabilise”. As soon as
appears in the display and an arrow appears at the right-hand
end of the bar graph, the measurement range has been excee-
ded, or the measurement path is open-circuit.
55
