Designed as an integrated multi-purpose tool for service, maintenance and installation (SMI) engineers, the 125/S ScopeMeter combines an oscilloscope, true-RMS DMM, and dual-input paperless recording into one fully functional unit. This instrument can measure power, harmonics, motor winding resistance and motor effective voltage from a variable frequency drive controller, working with many industrial networks including AS-I bus, CAN-bus, Profibus, Foundation Fieldbus and Ethernet.

The Fluke 125/S features extended harmonics analysis of mains waveforms up to the 33rd harmonic, including the important 3rd and 5th harmonics which can be an indicator of overheating in the neutral wire or motor. The wide frequency range covers railway (16.66 Hz) and avionics power generator systems (400 Hz) applications.

The bus health test feature continuously acquires the bus signal and compares parameters to industry standard specifications.
It displays bus speed and measures signal quality with 'good' or 'bad' indications for parameters like rise- and fall-time, amplitude, bias level, pulse width and distortion.
Defects such as bad or missing terminators, bad cable splits, incorrect line loading, missing links, line interrupts, short circuit conditions and reflections are discovered, while the eye-pattern mode allows for a visual check of signal integrity to easily identify anomalies like phase noise, jitter or distortion.

The Fluke 125/S includes: FlukeView software, C120 carrying case and an OC4USB optical isolated RS-232 to USB adapter cable - In addtion to the 40 MHz probe, power adapter, BP120MH battery (up to 7 hours operation), test leads, and i400s current clamp that come standard with the 125/3.