Handheld Oscilloscopes

Handheld oscilloscopes put waveform capture where the fault is, combining a scope, meter and often a recorder in a battery-powered, insulated body.

Fluke, Teledyne LeCroy and AEMC cover this range. Bandwidth is lower than a comparable bench instrument, but that is rarely the constraint in field work. What matters is isolation, because channels that are galvanically isolated from each other and from ground let you probe a motor drive or a floating supply without creating a short through the mains earth. Check the safety category rating for the circuits you work on, and confirm battery runtime and whether a recording mode captures events unattended.