Constellation™ 2002 June 20
G-4
Noise Figure. The ratio of the output noise power to the portion of the output
noise power stemming from thermal noise at the input at standard noise
temperature.
NP. NonProtected.
O
OCXO.
Ovenized (proportional Control) Crystal Oscillator.
OEM. Original Equipment Manufacturer.
P
PDU. Protocol Data Unit.
PLL. Phase-Locked Loop.
Q
QUICC. QUad Integrated Communications Controller.
R
RCS. Reverse Channel Switch.
RF. Radio Frequency.
RIP. Routing for Internet Protocol.
RMA. Return Material Authorization.
RMS. Rack-Mounting Space.
RSL. Received Signal Level.
RX. Receiver.
S
SCAN.
System Control And Alarm Network. Harris’ proprietary standard for
sending alarm/status/control messages over a serial port.
SD. Space Diversity. Pertaining to signal transmission and reception in which
two or more separate and independent propagation media or paths are used for
transmitting the same information.
SES. Severely Errored-Seconds.
SESR. Severely Errored-Second Ratio.
SNMP. Simple Network Management Protocol.
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