Mv Voltage Measurements - Sonel CMM-40 Manual De Uso

5.3

mV voltage measurements

Do not measure mV voltages if a motor on the circuit is being
switched ON or OFF. Large voltage surges may occur that
can damage the meter.
In order to realise a measurement of mV voltage, it is necessary to
realise the following actions:

Set the function switch to the mV position,

with the RANGE button set the measurement range manually
if necessary,

Press the MODE button to indicate "DC" or "AC", or in AC
range press EXIT for two seconds and chose "AC+DC",

Insert the black test lead banana plug into the negative COM
jack. Insert the red test lead banana plug into the positive V
jack,

Touch the black test probe tip to the negative side of the cir-
cuit. Touch the red test probe tip to the positive side of the cir-
cuit,

Read the mV voltage in the display,

Having done the measurement disconnect the test leads from
the meter.
ATTENTION!
CMM-40 – USER MANUAL
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