User Guide

8233D PRO-EN

Note:

● The test lead can add 0.1Ω to 0.2Ω of error to resistance

measurement. To obtain precision reading in low-resistance

measurement, that is the range of 200.0Ω, short the input terminal

before measuring. In this time, the contact resistance displayed on the

LCD. You can subtract the contact resistance value from the measured

value.

● For high-resistance measurement (>10MΩ), it is normal taking several

second to obtain stable reading.

● The LCD display “OL” indicating open-circuit for the tested resistor or

the resistor value is higher than the maximum range of the meter.

5-3. Diode/Continuity check

5.3.1. Diode

① Set the rotary switch to “ ” position. First time, default mode is

diode check mode. You can enter the continuity check mode by the

“ FUNC” Key.

② insert the red test lead into the “VΩ” terminal and the black test lead

into the “COM” terminal.

③ Use the diode test mode to check diodes, transistors and other

semiconductor device. In the diode test mode sends a current through

the semiconductor junction, and the measure the voltage drop across the

junction. A good silicon junction drop between 0.5V and 0.8V.

④ For forward voltage drop reading on any semiconductor component,

place the red test lead on the component anode and place the black test

lead on the component cathode. The measured value show on the

display.

⑤ Reverse the test lead and measure the voltage across the diode again.

● If diode is good, the display shows “OL”.