How to Measure DC Voltage Correctly with a Digital VOM

When measuring DC voltage with a digital VOM, it is important to pay attention to the polarity of the probes. If you make a mistake in polarity, the meter will display a negative sign. This can lead to inaccurate readings and may affect the performance of the circuit you are testing.

To measure DC voltage correctly with a digital VOM, follow these steps:

1. Set the Meter to the Correct Voltage Range

Before taking any measurements, make sure to set the digital VOM to the appropriate voltage range. This will ensure that you get an accurate reading and prevent damage to the meter.

2. Connect the Probes Correctly

Always connect the red probe to the positive terminal of the circuit and the black probe to the negative terminal. Make sure the probes are securely connected to the terminals to avoid any loose connections.

3. Take the Reading

Once the probes are correctly connected, you can take the reading by looking at the display on the digital VOM. The meter will show the voltage value with the correct polarity.

4. Remove the Probes Safely

After taking the measurement, safely disconnect the probes from the circuit. Always start by removing the black probe followed by the red probe to prevent any short circuits.

By following these steps, you can accurately measure DC voltage using a digital VOM without causing any damage to the meter or the circuit under test.