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Comtech EF Data SDM-650B User Manual

Page 345

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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