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HUAWEI MC509 CDMA LGA Module
Hardware Guide
Appendix B Acronyms and Abbreviations
Issue 01 (2011-04-08)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
86
Acronym or Abbreviation
Expansion
PDU
protocol data unit
RF
radio frequency
RoHS
Restriction of the use of certain Hazardous
Substances
RTC
real-time clock
UIM
User interface module
TTL
transistor-transistor logic
TVS
transient voltage suppressor
VSWR
voltage standing wave ratio
ACLR
Adjacent channel leakage power radio
AMPS
Advanced mobile phone system
CDMA
Code-division multiple access
DCCH
Dedicated control channel
EACH
Enhanced access channel
EVRC
Enhanced variable rate coder
LNA
Low noise amplifier
LPF
Lowpass filter
NF
Noise figure
PCM
Pulse coded modulation
PCS
Personal communication system
PLL
Phase lock loop
RF
Radio frequncy
Rx
Receive
SCH
Supplemental channel
SYNCH
Sync channel
EVDO
Evolution data only