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ABS Antilock Brake System
AC Alternating Current
AC Coupling A mode of signal transmission that passes the dynamic (AC) signal component to the
input (INPUT A or INPUT B), but blocks the DC component. Useful to observe an AC
signal that is normally riding on a DC signal, e.g. charging ripple.
Acquisition The process of gathering measurement data into the instrument’s memory.
Acquisition Rate The number of acquisitions performed per second
Actuator A mechanism for moving or controlling something indirectly instead of by hand.
Alternating Current An electrical signal in which current and voltage vary in a repeating pattern over time.
Alternator An AC generator with diode rectification.
Amplitude The difference between the highest and the lowest level of a waveform.
Attenuation The decrease in amplitude of a signal
Auto Range
A
c
t
ivates an automatic adaptation
of the instrumen
t
to the inpu
t
signal in amplitude,
timebase, and triggering.
Bandwidth A frequency range.
Baud Rate Communication parameter that indicates the data transfer rate in bits per second.
Blower A device designed to supply a current of air at a moderate pressure. The blower case is
usually designed as part of a ventilation system.
BNC Coaxial type input connector used for INPUT A and INPUT B.
Bottom Display The lower part of the display, where the function key menu is listed.
Bypass Providing a secondary path to relieve pressure in the primary passage.
Carburetor A mechanism which automatically mixes fuel
with air in the proper proportions
to
provide a desired power output from a spark ignition internal combustion engine.
Catalytic Converter An in-line exhaust system device used to reduce the level of engine exhaust emissions.
Closed Loop (Engine) An operating condition or mode which enables modification of programmed instructions
based on a feedback system.
Continuity Ins
t
rument
setup
t
o check wiring, circuits, connectors, or switches
f
or
breaks (open
circuit) or closed circuits.
Contrast This setting (expressed in a percentage) determines the contrast ratio between display
text or graphics and the LCD background. (0 % is all white. 100 % is all black.)
Conventional Ignition system that uses a distributor.
Ignition System
G-1
GLOSSARY
Terminology Description