Diode Measurements - Sonel CMM-40 Manual De Uso


Insert the black lead banana plug into the negative COM jack.
Insert the red test lead banana plug into the positive  jack,

Press the MODE button to indicate

Touch the test probe tips to the circuit or wire you wish to
check,

If the resistance is less than approximately 35, the audible
signal will sound. If the circuit is open, the display will indicate
"OL",

Having done the measurement disconnect the test leads from
the meter.
5.8

Diode Measurements

Measurements must not be realised in live circuits. Capaci-
tors must be discharged.
In order to realise diode test it is necessary to realise the follow-
ing actions:

Set the function switch to the green Ω

Insert the black test lead banana plug into the negative COM
jack and the red test lead banana plug into the positive  jack,

Press the MODE button to indicate

Touch the test probes to the diode under test. Forward voltage
will typically indicate 0.400 to 0.700V. Reverse voltage will in-
dicate "OL". Shorted devices will indicate near 0V and an open
device will indicate "OL" in both polarities,

Having done the measurement disconnect the test leads from
the meter.
ATTENTION!
CMM-40 – USER MANUAL
and ""on the display,
CAP position,
and V on the display,
57