Instruction manual

AMPDIO DRIVERS
Page 243
Successive Approximation: An analog to digital conversion method that sequentially compares a series of binary
weighted values with the analog input signal to produce an output digital word in ‘n’ steps where ‘n’ is the number of
bits of the A/D Converter. q.v.
Symbol: The graphical representation of some idea. Letters and numerals are symbols.
Syntax: Syntax is the set of rules used for forming statements in a particular programming language.
Thermocouple: A thermocouple is two dissimilar electrical conductors, known as thermo-elements, so joined as to
produce a thermal emf when the measuring and reference junctions are at different temperatures.
Thermocouple Measuring Junction: The junction of a thermocouple which is subjected to the temperature being
measured.
Thermocouple Reference Junction: The junction of a thermocouple which is at a known temperature. aka Cold
Junction.
Throughput Rate: The maximum repetitive rate at which a data conversion system can operate with a specified
accuracy. It is determined by summing the various times required for each part of the system and then taking the
reciprocal of this time.
Transducer: Device that converts length, position, temperature, pressure, level or other physical variable to an
equivalent voltage or current accurately representing the original measurement.
Trigger: Pulse or signal used to start or stop a particular action. Frequently used to control data acquisition
processes.
Unipolar: A signal being measured is said to be unipolar when the voltage on its 'high' terminal is always the same
polarity (normally positive) in relation to its 'low' terminal.
Word: The standard number of bits that can be manipulated at once. Microprocessors typically have word lengths
of 8, 16 or 32 bits.
Wrap, Wraparound: Connection of a FIFO buffer such that the contents once loaded, are continuously circulated.