2) Connect the black test lead to “COM” jack and
red test lead to “V” jack.
3) Set the rotary switch to “V ”
4) Connect the test leads across with the object
to be measured.
Caution
1) Refer to “DC Voltage Caution” 1, 2, 4
2) “ ” means never exceed the maximum input
limits, 750V, otherwise internal circuit of the
Meter will be damaged even thought it is still
possible to display higher voltage value.
3) The input value should be 10% more than the
selected ranges to fulfill accuracy requirement.
C-3 Measuring DC Current
1) Press / button down not to display "AC"
on the LCD
2) Connect the black test lead to “COM” jack.
When measuring 200mA or below, connect
the red test lead to “mA” jack. When measuring
10A or below, connect the red test lead to "10A"
jack.
3) Set the rotary switch to “A ”
4) Connect the test leads in series with the object
to be measured, the LCD display the measuring
value and polarity of red test lead.
Caution
1) If magnitude of the current is unknown, always
start with the highest range and reduce until
satisfactory reading is obtained.
Model UT57: OPERATING MANUAL
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