MI 3103 GigaOhm Measurements
4.4 Compensation of test leads resistance
In order to achieve high accuracy of test results it is advised to compensate resistance of the test
leads before carrying out
R
200mA
and
Rcon
measurements. Especially it is advised to
compensate test leads whenever the leads are changed for different ones.
Compensation of test leads resistance is stored and is used for both
R
200mA
and
Rcon
functions.
How to compensate test leads:
-
Select
R
200mA
or
Rcon
function with the rotary switch.
-
Short the test leads.
-
Press
the
CAL
key, the message ‘CAL’ is displayed for a while then
0.00
is
displayed. Resistance of test leads is now compensated and the instrument is ready
for measurements. A confirmation sound indicates that the new calibration values
were accepted successfuly.
Note
Max. resistance that can be compensated is 5
. If total measured resistance is
higher than 5
(e.g. open test leads) then any compensation previously stored is
cancelled.
Compensation remains valid until next compensation or until compensation is
cancelled (e.g. by performing the compensation with open test leads).
Indications that the test leads are compensated
- The message ‘CAL’ for compensated test leads is displayed for a while when setting
R
200mA
or
Rcon
with rotary switch.
4.4 Voltage measurement
How to carry out the measurement:
- Select
U
function with the rotary switch knob.
-
Connect test leads to the equipment under test.
-
Read displayed result (Voltage), see the figure below.
Fig. 10. Example of voltage measurement result
Note!
Do not connect test leads to a voltage higher than 600 V AC to avoid possible
damage of the instrument!
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