UNI-T UT256A Operating Manual page 8

UT256A User Manual
3. DC Voltage Measurement (Picture 5)
1) Turn the function switch to the
2) Insert the red test lead into the signal input jack, black into
the COM input jack, and make the probes in contact with
both ends of the measured object (part).
3) Read the measured value on the display.
Red
Picture 5
Caution:
Maximum measuring voltage: 1000V (AC/DC voltage)
under CAT II, 600V (AC/DC voltage) under CAT III,
ACV: 45Hz~400Hz.
Do not exceed the limits, otherwise there may be danger
of electric shock or damage to the meter (If the LCD displays
"OL", it indicates that the voltage is over range).
The input impedance of the meter is 10MΩ. This load effect
may cause measurement errors when measuring high-
impedance circuits. If the measured impedance is
≤
10kΩ, the error can be ignored (
13
position.
Black
≤
0.1%).
UT256A User Manual
Be cautious to avoid electric shock when measuring high
voltages.
Before each use, verify meter operation by measuring a
known voltage.
4. Continuity/Resistance Measurement (Picture 6)
1) Turn the function switch to the
SELECT button to switch to continuity/resistance
measurement.
2) Insert the red test lead into the signal input jack, black into
the COM input jack, and make the probes in contact with
both ends of the measured object (part).
3) Read the measured value on the display.
Continuity
Resistance
Red
Picture 6
14
position, and use the
Black