Ac Voltage Measurement - UNI-T UT50D Operating Manual

The AC voltage measurement has 4 measurement
positions on the rotary switch: 2V, 20V, 200V and 750V
To measure AC Voltage, connect the Meter as follows:
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, which is
effective value of sine wave (mean value response).
l If the value of voltage to be measured is unknown,
use the maximum measurement position (750V) and
reduce the range step by step until a satisfactory
reading is obtained.
l The LCD displays "1" indicating the existing selected
range is overloaded, it is required to select a higher
range in order to obtain a correct reading.
l In each range, the Meter has an input impedance of
approx. 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).
l When AC voltage measurement has been completed,
disconnect the connection between the testing leads
and the circuit under test.
Model UT50D: OPERATING MANUAL
range.
15
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