Gather tools: multimeter, test leads (red/black), batteries/charger or device under test, and appropriate probes/adapters if needed
Set the multimeter to the correct function and range (or auto-range)
Insert probes: red probe to the V/Ω/Hz terminal, black probe to the COM terminal
Verify the meter works: test continuity on a known-good circuit or measure a known voltage source
Measure DC voltage (battery/adapter): set to DC V, connect red to the positive terminal and black to the negative, read the value
Measure AC voltage (outlets/mains): set to AC V, connect probes to hot/neutral as appropriate, read the value
Measure resistance (power off): set to Ω, disconnect power, connect probes across the component, read the value
Continuity test: set to continuity mode, power off, connect probes across the circuit/component, confirm beep/indicator and note resistance if shown
Diode test (if supported): set to diode mode, place red/black probes to forward bias, read the forward drop; reverse the leads to check opposite direction
Current measurement (high care): set to A/μA/mA, start with the highest current range, power off before changing wiring, insert the meter in series with the circuit
Measure current using proper terminals: move the red lead to the correct current jack (A/μA/mA) before measuring
For small current: use μA or mA range first; for larger current: use A range
For voltage/current relationships: do not measure resistance or continuity while the circuit is powered
For live circuits: avoid touching probe tips beyond the insulated area and keep hands away from exposed conductors
If the display shows overflow (e.g., OL): increase range (for manual range) or switch to the correct function
After measurements: disconnect probes, return the meter to an appropriate standby setting, and store leads safely