O/s

Abbreviation for Offside

OS

Acronym for Oxygen Sensor

OSAC

Acronym for Orifice Spark advance control

OSC

Acronym for Output State Check (Ford)

OSCA

A vehicle brand of which the 1948-56 MT-4 models are milestone cars.

Oscillate

To swing back and forth like a pendulum.

Oscillating action

A swinging action such as that in the pendulum of a clock.

Oscillating pick-up ignition system

(OPUS) An ignition system where the contact breaker and cam are replaced by a timing rotor, a pick-up module, and an amplifier module

Oscillation

A swinging action such as that in the pendulum of a clock.

Also see

• Quasi-biennial Oscillation

Oscillator

See

• Barkhause-kurz Oscillator
• Beat-frequency Oscillator
• Bridge Oscillator
• Quartz Oscillator
• Quenching Oscillator

Oscillograph

See

• Cathode-ray Oscillograph

Oscilloscope

1. A testing unit which projects visual reproduction of the Ignition system Spark action onto screen of cathode-ray tube.
2. Fluorescent-coated tube which visually shows an electrical wave.

Also see

• Cathode Ray Oscilloscope
• Ignition oscilloscope

OSD

Acronym for Otomotiv Sanayii Dernegi (i.e., Automotive Manufacturers Association) (Turkey)

OSHA

Acronym for Occupational Safety and Health Administration. A division of the US Department of Labor that oversees and regulates matters affecting safety in the workplace.

OSM

Acronym for Output State Monitor

OSS

Acronym for Output Speed Shaft

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