User`s manual

100-M0074X1 4 of 24
www.cobham.com/gms
1.0 Acronyms
This section lists and describes the various acronyms used in this document.
Name Meaning
16 QAM 16-state Quadrature Amplitude Modulation
64 QAM 64-state Quadrature Amplitude Modulation
A/V Audio/Video
AES Advanced Encryption System (32 bit)
ABS Messenger Basic Scrambling (8 bit)
ASI Asynchronous Serial Interface
COFDM Coded Orthogonal Frequency Division Multiplexing
CVBS/Y Composite video/Luminance with S-video
C Chroma video
D/C Down-Converter
DDR Digital Diversity Receiver
DVB-T Digital Video Broadcasting-Terrestrial
FEC Forward Error Correction
GUI Graphical User Interface
I/O Input/ Output
Kbaud Kilobaud per second
Kbps Kilobits per second
Mbps Megabits per second
MDL Messenger Digital Link
MDR Messenger Digital Receiver
MDT Messenger Digital Transmitter
MER Modulation Error Rate
MPEG Moving Picture Experts Group
MSR Messenger Smart Receiver
NTSC National Television System Committee
PAL Phase Alternation Line
QPSK Quadrature Phase Shift Keying
RF Radio Frequency
RX Receiver
SDI Serial Digital Interface
SDML Standard Definition Messenger Link
MDT-A Messenger Digital Transmitter – ASI only
S/N Signal-to-Noise Ratio
THD Total Harmonic Distortion
TX Transmitter
VDC Volts (Direct Current)