Innova 3320 Auto-Ranging DMM Owner's Manual
![Innova 3320 Auto-Ranging DMM manual cover](/images/iMrXMMTaRzTRglwGGofzzvzp/thumbs/thumb175x175.webp)
To measure voltage, turn the rotary switch to the 'V' symbol. Connect the black lead to the COM jack and the red lead to the VΩ jack. Place the probes across the component or circuit where you need to measure voltage.
Set the dial to the continuity test mode (indicated by a sound wave symbol). Connect the test leads to the circuit or wire. A continuous circuit will emit a beep sound.
To replace the battery, remove the protective rubber cover, unscrew the back panel, and replace the old battery with a new 2 AAA batteries. Reassemble the multimeter afterward.
The display shows '1' or 'OL' when the measured value exceeds the selected range. Adjust the range setting or switch to auto-ranging mode.
Turn the dial to the diode test mode (indicated by a diode symbol). Connect the red test lead to the anode and the black lead to the cathode. The display should show a forward voltage drop if the diode is functional.
Check if the batteries are correctly installed and have adequate charge. If not, replace the batteries. Ensure the rotary switch is properly set.
Switch the dial to the current range (A with a line). Insert the black lead into the COM jack and the red lead into the A jack. Open the circuit and connect the leads in series to measure current.
No, the Innova 3320 is designed to measure DC current only. For AC current measurement, a different model that supports AC current is necessary.
To change the fuse, open the back cover by removing the screws. Locate the fuse, gently remove it, and replace it with a fuse of the same rating. Reassemble the multimeter.
Auto-ranging automatically selects the correct range for the measurement being taken, providing a more straightforward user experience. The Innova 3320 will adjust itself to display the most significant figures.