Ac Current Measurement (Direct Input); Dc Current Measurement (Direct Input) - Lutron Electronics CM-9930R Operation Manual

5-8 AC Current measurement (Direct input)

1) Connect BLACK test lead into " COM " terminal.
2) Connect RED test lead into " uA, mA " terminal.
3) If measure " uA " ( 400 uA, 4000 uA ), select the
" Function rotary switch " ( 3-4, Fig. 1 ) to the " uA "
position then push the " FUNC. button " ( 3-9, Fig. 1 )
for display show "
4) If measure " mA " ( 40 mA, 400 mA ), select the
" Function rotary switch " ( 3-4, Fig. 1 ) to the " mA "
position then push the " FUNC. button " ( 3-9, Fig. 1 )
for display show "
5) Open the circuit in which the current are to be measured.
Now securely connect test lead in series with the circuit.

5-9 DC Current measurement (Direct input)

All the measuring procedures are same as above 5-8,
except push the " FUNC. button " ( 3-9, Fig. 1 ) for
display show "
Consideration :
a. The max. reading value for direct input current
value is AC/DC 400 mA . Do not exceed the input
current value more than 400 mA. Otherwise the
protection fuse will be broken.
b. For the direct current input, after input the current,
the meter is out of function ( show 0 ). Then please
check if the protection fuse ( 500 mA ) is already
broken or not ? Detail please refer " 6-2 Replacement
of fuse ".
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