User's Manual

1027144–0001 Revision D A- 1
Appendix A
Acronyms and abbreviations
ac – alternating current
ATM – asynchronous transfer mode
AWG – American wire gauge
BER – bit error rate
BSP – baseband signal processor
C – Celsius
CCM – channel and control module
cm – centimeter
CMR – communication riser
CPU – central processing unit
dB – decibel
dc – direct current
DRAM – dynamic RAM
EIDU – expansion indoor unit
EMS – Element Management System
ESD – electrostatic discharge
ESN – electronic serial number
F – Fahrenheit
FCC – Federal Communications Commission
FEM – fiber extender module
FRAD – frame relay access device
ft – foot
HNS – Hughes Network Systems
HT – hub terminal
Hz – hertz
ID – identification
IDU – indoor unit
IEC – International Electrotechnical Commission
IF – intermediate frequency
IFL – intrafacility link
in. – inch
LAN – local area network
lb – pound(s)
LCD – liquid crystal display
LED – light emitting diode
LOS – line of sight
m – meter
MAC – media access control
mm – millimeter
NEBS – Network Equipment Building Standards
NEC – National Electric Code
NEMA – National Electrical Manufacturing
Association
NFPA – National Fire Protection Association
ODU – outdoor unit
PC – personal computer
PCI – PC interface
PMP – point–to–multipoint
QRSS – quasi random signal source
RAM – random–access memory
RF – radio frequency
ROM – read–only memory
RSSI – received signal strength indication
RT – remote terminal
SC – signaling controller
SDRAM – static dual port RAM
SSI – service–specific interface
SUDS – startup diagnostics
TAC – Technical Assistance Center
TDM – time division multiplexing
UL – Underwriters Laboratories
V – volt
Vac – volt, alternating current
Vdc – volt, direct current
VSAT – very small aperture terminal
WND – Wireless Networks Division
WDT – watch dog timer