UNI-T UT161 Series, User Manual

Please check the internal batteries first. If “       ” is displayed, replace the batteries 
in time. Please also pay attention to the warning sign “      ” beside the input 
terminals, which indicates that the measured voltage or current must not exceed 
the values marked on the meter.

1) Insert the red test lead into the           or            terminal, and black test lead 
    into the 

COM

 terminal.

2) Turn the function dial to the       ,        , or       position.
3) Short press the 

SELECT

 button to switch to AC voltage measurement or LPF 

    ACV measurement (UT161E, manual maximum range by default) if required.  
4) Connect the test leads with the measured load or power supply in parallel.
5) Read the voltage value on the display (if the voltage is >1000V, the red indicator 
    light will be on and the buzzer will sound an alarm).
6) Short press the         button to display the frequency/duty ratio of the measured 
     voltage.

 Caution:

Do not input a voltage over 1000V or it may damage the meter.

Be cautious to avoid electric shock when measuring high voltages.

After completing the measurement, disconnect the test leads from the circuit 

under test.

2. DC Voltage Measurement (Picture 5)

DC Voltage Measurement 

1) Insert the red test lead into the           or             terminal, and black test lead 
    into the 

COM

 terminal.

2) Turn the function dial to the       ,       , or         position.
3) Short press the 

 button to switch to DC voltage measurement if 

SELECT

    required.
4) Connect the test leads with the measured load or power supply in parallel.
5) Read the voltage value on the display (if the voltage is >1000V, the red indicator 
   light will be on and the buzzer will sound an alarm).

AC+DC Voltage Measurement (UT161E) 

1) Insert the red test lead into the            terminal, and black test lead 

into the

COM 

terminal.

2) Turn the function dial to the         position.
3) Short press the 

 button to switch to AC+DC voltage measurement.

SELECT

4) Connect the test leads with the measured load or power supply in parallel.
5) Read the voltage values on the display. The AC and DC voltages are displayed 
    alternately.

VIII. Operating Instructions

1. AC Voltage Measurement (Picture 4)

Before each use, verify meter operation by measuring a known voltage.

The input impedance of the meter is about 10M

Ω

. This load effect may cause 

measurement errors in high-impedance circuits. In most cases, if the impedance 

of the circuit is below 10k

Ω

, the error can be ignored (

≤

0.1%).

Picture 4

Picture 5