Turn the selection wheel on the handle of the amp clamp to read AAC or ADC current, depending on the reading you need.
Place the clamp around the cable. Center the cable in the middle of the circle created by the clamps for the best results.
Take the reading from the LCD screen.
Use the read and black test leads for a voltage reading. Plug the red test lead into the positive "V" terminal of the system, then plug the black lead into the negative "COM" terminal.
Turn the function wheel to the VAC or VDC position, depending on what reading you need.
Connect the leads to the circuit in parallel. The voltage measurement will be displayed on the LCD screen.