User manual

CONFIDENTIAL Protium Technologies, Inc. 4050-9901
Rev No: 05
5 GHz RF Modem 31-Jan-2007 82 of 84
This document and information contained herein is subject to the restrictions set forth on the title page .
Appendix C GLOSSARY
BERT Bit-Error Rate Test. A test to determine the BER.
BER Bit-Error Rate. The ratio of the number of incorrect bits received to the total number of bits received.
The bit-error rate is usually expressed in scientific notation such as 1.0 x 10
-6
or 1.0E-6.
Bit Binary “digit.” A bi-valued entity representing the smallest unit of information and generally
represented by zero (“0”) or one (“1”).
bps Bits Per Second.
byte Eight bits.
dB Decibel. The ratio of two power levels expressed as ten times the base 10 logarithm of the ratio.
dBm An absolute power measurement expressed as decibels relative to one milliwatt.
CIT Craft Interface Terminal. A generic text-based terminal with an EIA-232 serial interface used for
local management functions. This may be a dedicated text terminal, a personal computer with
terminal emulator software, or a Personal Digital Assistant (PDA) with serial port and terminal
emulator software.
DCE Data Communications Equipment. The communication equipment, such as a modem, involved in a
communication channel. Contrast with DTE.
DNS Domain Name Server. A network server that provides a service to map network domain names to IP
network addresses.
DHCP Dynamic Host Configuration Protocol. A network protocol used to automatically (and dynamically)
configure an IP network port.
DTE Date Terminal Equipment. The end node equipment involved in a communication channel. The DTE
is the source and/or destination for the information sent over the communication channel. Contrast
with DCE.
EIA Electronic Industries Alliance.
FCC Federal Communications Commission.
FEC Forward Error Correction. A means by which errors that corrupt a message sent through a
communication channel may be corrected. In FEC, redundant information is added to the message at
the sender and processed at the receiver so that the original message may be recovered intact in spite
of certain errors.
GHz Gigahertz. A frequency of 1,000,000,000 cycles per second.
GPL GNU General Public License. A license agreement for open-source software (copyrighted by the Free
Software Foundation).
IP Internet Protocol.
Kbps Kilobits per second.
LGPL GNU Library General Public License. A license agreement for open-source software (copyrighted by
the Free Software Foundation). The LGPL is typically used for libraries and other software “building
blocks.”