Specifications

SDM-650B Satellite Modem Glossary
Rev. 5 Draft g–5
RX Receive (Receiver)
RXCLK Receive Clock
RXD Receive Data
RZ Return-to-Zero
s Second
S/N Signal-to-Noise Ratio
SCPC Single Channel Per Carrier
SCR Serial Clock Receive
SCT Serial Clock Transmit
SCTE Serial Clock Transmit External
SD Send Data
SFS Subframe Sync
SMS Satellite Multiservice System
SN Signal-to-Noise Ratio
SSB Single-sideband
SSPA Solid State Power Amplifier
ST Send Timing
SW Switch
SYNC Synchronize
TB Terminal Block
TCXO Temperature-Compensated Crystal Oscillator
TDMA Time Division Multiple Access
TEMP Temperature
TERR Terrestrial
TP Test Point
TT Terminal Timing
TTL Transistor-Transistor Logic
TX Transmit (Transmitter)
TXCLK Transmit Clock
TXD Transmit Data
TXO TX Octet
U/C Up converter
UART Universal Asynchronous Receiver/Transmitter
UHF Ultra-high Frequency
UNK Unknown
US United States
UW Unique Word
V Volts
VAC Volts, Alternating Current
VCO Voltage-Controlled Oscillator
VCXO Voltage-Controlled Crystal Oscillator
VDC Volts, Direct Current
VSWR Voltage Standing Wave Ratio
W Watt
WG Waveguide