Datapath Q Series, Инструкция по эксплуатации, Страница: 97 / 104

Q-Series Glossary
97
Glossary
Introduction
The following table includes terms and abbreviations used within this manual.Refer to this
table as you are following procedures for operating this equipment.
Terms and Abbreviations
Terms and Abbreviations
Term Description
AC
Alternating Current
ACU Antenna Control Unit
AGC Automatic Gain Control
Amp or A Ampere
Apogee The orbital point where the satellite is furthest from the earth
Azimuth Pointing direction of antenna in horizontal plane
Bandwidth Frequency range the transponder can transmit.
BDC Block Down Converter
Bitrate Speed of digital transmission in bits per second
BNC Connector type
Boresight Aiming line for the RF beam from the antenna to the satellite
bps bits per second
BPSK Binary Phase Shift Key
BUC Block Up Converter, converts a signal from a lower to a higher frequency
C Celsius or Centigrade temperature degrees.
C/N Carrier to Noise ratio. Ratio expressing the quality of an RF signal.
C/No Carrier to peak Noise ratio
Coaxial adapter Adapter between coaxial cable and waveguide.
CPU Central processing unit
CRP Carbon fiber Reinforced Plastic
dB Decibel
dBi Amplification factor (in decibels) of an antenna with reference to the gain of a
theoretical "isotropic" antenna
dBK Decibel referenced to Kelvin (absolute temperature)
dBm Decibels referenced to one milliwatt
dBW Decibels referenced to one watt
DC Direct Current