Campbell Scientific CR1000 Measurement and Control System - Manual (Page 447)

447
Section 11. Glossary
11.1 Terms
ac
See Vac
(p. 470).
accuracy
A measure of the correctness of a measurement. See also the appendix
Accuracy, Precision, and Resolution
(p. 471).
A/D
Analog‐to‐digital conversion. The process that translates analog voltage
levels to digital values.
Amperes (Amps)
Base unit for electric current. Used to quantify the capacity of a power
source or the requirements of a power‐consuming device.
analog
Data presented as continuously variable electrical signals.
argument
See parameter
(p. 461).
ASCII / ANSI
Abbreviation for American Standard Code for Information Interchange /
American National Standards Institute. An encoding scheme in which
numbers from 0‐127 (ASCII) or 0‐255 (ANSI) are used to represent pre‐
defined alphanumeric characters. Each number is usually stored and
transmitted as 8 binary digits (8 bits), resulting in 1 byte of storage per
character of text.
asynchronous
The transmission of data between a transmitting and a receiving device
occurs as a series of zeros and ones. For the data to be "read" correctly,
the receiving device must begin reading at the proper point in the
series. In asynchronous communication, this coordination is
accomplished by having each character surrounded by one or more
start and stop bits which designate the beginning and ending points of
the information (see synchronous
(p. 468) ).