Comtech EF Data SDM-9000, Installation And Operation Manual

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Glossary SDM-9000 Satellite Modem
g–4 Rev. 4
LNA Low Noise Amplifier
LO Local Oscillator
LSB Least Significant Bit
LSI Large Scale Integration (semiconductors)
m mille (10
-3
)
M&C Monitor and Control
mA Milliamperes
Max Maximum
Mbit/s Megabits per second
MC Monitor and Control
MFS Multiframe Sync
MHz
Megahertz (10
6
Hertz)
Min Minimum or Minute
Mod Modulator
MOP Modulated Output Power
MPC Microprocessor Controller
ms Millisecond (10
-3
second)
Ms/s Megasymbols per second
MSB Most Significant Bit
MUX Multiplexer
n nano (10
-9
)
N/A Not Applicable
NACK Negative Acknowledgment
NC No Connection or Normally Closed
NO Normally Open
NRZ Non-Return to Zero (code)
ns
Nanosecond (10
-9
second)
OQPSK Offset Quadrature Phase Shift Keying
OSC Oscillator
p
pico (10
-12
)
P-P Peak-to-Peak
P/AR Peak to Average Ratio
PAL Programmable Array Logic
PC Printed Circuit
PCB Printed Circuit Board
PCM Pulse Code Modulation
PECL Positive Emitter Coupled Logic
pF PicoFarads (10
-12
Farads)
PK Peak
PLL Phase-Locked Loop
PN Pseudo-Noise
PPM Parts Per Million
PS Power Supply
PSK Phase Shift Keying
PWB Printed Wiring Board
PWR Power
QAM Quadrature Amplitude Modulation
QPSK Quadrature Phase Shift Keying
RAM Random Access Memory
RD Receive Data
REF Reference
RF Radio Frequency
RLSD Receive Line Signal Detect
RMA Return Material Authorization
ROM Read-Only Memory
RR Receiver Ready
RS Ready to Send