Cisco Cisco 1 GHz GainMaker Amplifier Guía De Instalación
741338 Rev D
Glossary-3
Glossary
, Continued
LED
Light emitting diode
Mbps
Megabits per second
N/C
Not connected
Nanosecond
1 thousandth of a microsecond
Nm
Newton meter
NIU
Network Interface Unit
OEM
Original equipment manufacturer
OOB
Out of band
PA
Power amplifier
PCB
Printed circuit board
PDI
Pressure Differential Indicator
PROM
Programmable Read Only Memory
PWB
Printed wiring board
PWR
Power
QAM
Quadrature amplitude modulation
QPSK
Quadrature phase-shift keying
R/C
Resistance/capacitance
RC
Reverse conditioner
RCVR
Receiver
Reverse or return
Signal flow direction toward the headend
RF
Radio frequency
RMA
Return material authorization
RMS
Root-mean square
RX
Receive
SAI, SAII, SAIII
System Amplifier I, System Amplifier II, System Amplifier III