Tektronix WCA230A, Programmer'S Manual, Page: 671 / 678

WCA230A & WCA280A Programmer Manual
Glossary- 1
Glossary
AM (Amplitude Modulation)
The process, or result of a process, in which the amplitude of a sine wave
(the carrier) is varied in accordance with the instantaneous voltage of a
second electrical signal (the modulating signal).
ASCII
Acronym for the American Standard Code for Information Interchange.
Controllers transmit commands to the analyzer using ASCII character
encoding.
Backus-Naur Form (BNF)
A standard notation system for command syntax diagrams. The syntax
diagrams in this manual use BNF notation.
Controller
A computer or other device that sends commands to and accepts responses
from the analyzer.
EVM (Error Vector Magnitude)
The magnitude of an error of an actual signal relative to an ideal signal in a
constellation display.
FM (Frequency Modulation)
The process, or result of a process, in which the frequency of an electrical
signal (the carrier) is varied in accordance with some characteristic of a
second electrical signal (the modulating signal or modulation).
GPIB
Acronym for General Purpose Interface Bus, the common name for the
communications interface system defined in IEEE Std 488.
IEEE
Acronym for the Institute for Electrical and Electronic Engineers.
PM (Pulse Modulation)
The process, or result of a process, in which the amplitude, phase, or
duration of a pulse train (the carrier) is varied in accordance with some
characteristic of a second electrical signal (the modulating signal or
modulation).