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Figure 4
1.2K
Figure 5
1.2K
Diode
In this mode, the probe tip contact the positive terminal of the diode, connect the
auxiliary ground lead to the negative terminal of the diode, the screen will display the
forward voltage drop, indicates the forward bias. If switch the probe tip and
auxiliary ground lead, the screen will not display the voltage, indicates the reverse
bias.
3.1 Voltage & Polarity Testing
3. Operating Instructions
While the tool is in DC Voltage mode, contact the probe tip to a POSITIVE circuit. The
red LED will light up and the LCD displays the voltage with a resolution of 0.1V. A beep
tone will sound.
If contact the probe tip to a NEGATIVE circuit, the green LED will light up and the LCD
displays the voltage with a resolution of 0.1V. A beep tone will sound.
If contact the probe tip to an OPEN circuit. Neither of the LED will light up. (Figure 6)
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