The next two steps explain how to measure frequency with your multimeter.

The frequency functionality measures the dominant frequency in an AC circuit. If the circuit has complex AC signals or noisy signals, the multimeter may not measure the frequency accurately.

Plug the black lead into the COM port. Plug the red lead into the right port.

Switch the multimeter to the AC Hz mode:

Turn the function dial to the Volts mode.

Press the blue Select button to switch to AC volts.

Press the Hz button to toggle the frequency measurement mode.