Comtech EF Data SDM-650B - Manual (Page 342)

Glossary SDM-650B Satellite Modem
g–2 Draft Rev. 5
BTU British Thermal Unit
BW Backward Alarm or Bandwidth
BWR Bandwidth Ratio
C Celsius
C/N Carrier-to-Noise Ratio
C/No Carrier-to-Noise Density Ratio
CCITT International Telephone and Telegraph Consultative Committee
CDMA Code Division Multiple Access
CH Channel
CHNL Channel
CIC Common Interface Circuit
CL Carrier Loss
CLK Clock
CLNA C-band LNA
CLR Clear
CMOS Complementary Metal Oxide Semiconductor
Coax Coaxial
Codec Coder/Decoder
COM Common
CPFSK Continuous-Phase Frequency Shift Keying
CPSK Coherent Phase Shift Keying
CPU Central Processing Unit
cr Carriage Return
CRC Cyclic Redundancy Check
CRT Cathode Ray Tube
CS Clear to Send
CSC Comstream Compatible
CSMA Carrier Sense Multiple Access
CTS Clear to Send
CU Channel Unit
CW Continuous Wave
D&I Drop and Insert
D/A Digital-to-Analog
D/C Down
Converter
DAC Digital-to-Analog Converter
DAMA Demand Assignment Multiple Access
dB Decibels
dB/Hz Decibels/Hertz (unit of carrier-to-noise density ratio)
dBc Decibels referred to carrier
dBm Decibels referred to 1.0 milliwatt
dBm0 The signal magnitude in dBm referenced to the nominal level at that
point
dBW Decibels referred to 1.0 watt
DC Direct Current
DCE Data Circuit Terminating Equipment
DCPSK Differentially Coherent Phase Shift Keying
DDO Drop Data Output
DDS Direct Digital Synthesis
Demod Demodulator
DEMUX Demultiplexer
DET Detector
DM Data Mode
DPCM Differential Pulse Code Modulation
DPSK Differential Phase Shift Keying
DSP Digital Signal Processing
DSR Data Signal Rate