instrument used to measure electrical current flow in a circuit
AVR
alternator voltage regulator; refers to a device that is used to test generators/alternators for electrical output, voltage and amperage
CAN
controller area network; a protocol for communication between electronic/computer modules
DMM
a digital electronic measuring instrument that combines several functions in one unit
accessories
features that are not originally equipped by the manufacturer
options
features that are originally equipped at time of manufacture
inclinometer
device used to measure the incline of an object, measured in degrees
J2534 standard
is an interface standard designed by SAE (Society of Automotive Engineers) for vehicle electronics reprogramming
jounce
the motion of a wheel that compresses its suspension. Full jounce refers to a wheel that is at the upper limits of its travel. Jounce is the opposite of rebound
manometer
a graduated tube containing water which measures pressure/vacuum in units of water column
micrometer
a precision measuring device for small distances
OBD
on board diagnostics are part of a vehicle’s engine management software used to monitor system performance
Ohm’s Law
the relationship between current, resistance and voltage in any electrical circuit
opacity meter (smoke)
an instrument that measure the optical properties of diesel exhaust
Pascal’s Law
fluid pressure exerted in a sealed vessel is equal and undiminished in all directions
pneumatic
operated by compressed air
pyrometer
instrument used to measure temperatures
sensory inspection
using one or more of the five senses to perform an inspection
refractor
test instrument used to measure the strength of antifreeze or specific gravity of electrolyte in a cell of a lead/acid battery
sirometer
test instrument used to measure RPM of an engine or frequency of a vibration with great accuracy
UART
universal asynchronous receive transmit ; a protocol for communication between computer modules
Watt’s Law
the relationship of power to current, voltage and resistance in any electrical circuit
