diatools V200 PRO - Operating Instructions; 3.1 Voltage & Polarity Testing

7
Automotive Circuit Probe & Breaker Finder Kit
In this mode, the probe tip contact the positive terminal of the diode, connect the auxilia
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 auxilia ground lead,
the screen will not display the voltage, indicates the reverse bias. (Figure 5)
Diode
Figure 4
1.2K
Figure 5
1.2K
3. Operating Instructions
3.1 Voltage & Polarity Testing
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 / 7)