User's Manual

Table Of Contents
Glossary
Glossary G-1
Glossary
a.c. (ac)
Alternating current.
ASCII (American Standard Code for Information Interchange)
A system used to represent alphanumeric data; a 7-bit-plus-parity character set established by ANSI and
used for data communications and data processing.
Bit
A binary digit; the smallest unit of data in the binary counting system, A bit has a value of either 0 or 1.
Byte
A group of eight bits that represent one data character.
Carrier
A signal that is modulated by a message signal to allow communication.
Channel
A communication path between a transmission source and receiver.
CMOS
See Complementary metal-oxide semiconductor.
Complementary metal-oxide semiconductor (CMOS)
A technology that combines the electrical properties of n-type semiconductors and p-type semiconductors.
Cut-off frequency
Frequency at which a circuit output falls to a specified fraction (usually half) of the maximum.
dB
Decibel. Dimensionless unit expressing the ratio of two powers, voltages or currents.
d.c. (dc)
Direct current.
Duplex
Simultaneous operation of both channels of a communication link.
EEPROM
Electrically erasable programmable read only memory.
FM
See Frequency modulation.