Radyne QAM256 Istruzioni per gli Interventi Pagina 86

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QAM256 Digital Video Modulator and Upconverter Glossary
TM077 – Rev. 4.0
G-5
Q
QAM Quadrature Amplitude Modulation
QPSK Quadrature Phase Shift Keying
R
RAM Random Access Memory
RF Radio Frequency
ROM Read Only Memory
rms Root Mean Square
RU Rack Unit. 1 RU = 1.75”/4.45 cm
Rx Receive (Receiver)
RxD Receive Data
R-S Reed-Solomon Coding. Reed-Solomon codes are block-based error correcting
codes with a wide range of applications in digital communications and storage.
S
SCC Satellite Control Channel. A Radyne satellite format.
SEQ Sequential
SYNC Synchronize
T
TBD To Be Designed or To Be Determined
TM Technical Manual
TPC Turbo Product Codes
TRE Trellis
TT Terminal Timing
Tx Transmit (Transmitter)
TxD Transmit Data
U
UART Universal Asynchronous Receiver/Transmitter
UUT Unit Under Test
V
V Volts
VAC Volts, Alternating Current
VCO Voltage Controlled Oscillator
VDC Volts, Direct Current
VIT Viterbi Decoding
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