Display Symbols; Measurement Operation; Dc/ Ac Voltage Measurement - UNI-T UT39B Mode D'emploi

Model: UT39B
1. H Data hold is active
2. - Indicates negative reading
3. Battery is low. To avoid false readings, replace the battery as soon as this
indicator appears.
4. hFE Unit of transistor
5. °C Centigrade temperature
6. Test of diode
7. Continuity buzzer
8. Dangerous voltages
A. DC/ AC Voltage Measurement
To measure voltage, connect the meter as follows:
1. Insert the red test lead into the VW terminal and the black test lead into the COM terminal.
2. Set the rotary switch to an appropriate measurement position in V--range for DC or V~ for AC.
When the value is unknown always start from the max range 1000 V.
3. Connect the test leads across with the object being measured. The measured value shows on
the display.
Note
• Displays '1' selected range is overload; it is required to select a higher range in order to obtain
a correct reading.
• In each range, the Meter has an input impedance of approx.10MW. This loading effect can
cause measurement errors in high impedance circuits. If the circuit impedance is less than or
equal to 10kW, the error is negligible (0.1% or less).
To avoid possibly damages to the meter, please do not attempt to input higher than 1000V or 750V
rms.
OPERATING MANUAL
8