Ac & Dc Current Measurement - UNI-T UT90B Operating Manual

Measurement Operation(2)
1. Insert the red test lead into the V
the black test lead into the COM terminal.
2. Set the rotary switch to an appropriate measurement
position in V
3. Connect the test leads across with the object being
measured.
The measured value shows on the display.
Note
l When DC/AC voltage measurement has been
completed, disconnect the connection between the
testing leads and the circuit under test.
l In each range, the Meter has an input impedance of
10M . This loading effect can cause measurement
errors in high impedance circuits. If the circuit
impedance is less than or equal to 10k , the error
is negligible (0.1% or less).
B.AC & DC Current Measurement
Model UT90B: OPERATING MANUAL
or V .
black
( figure 4)
15
terminal and
(see figure 4)
red