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HUAWEI EM820W HSPA+ PC Embedded Module
Hardware Guide
Appendix B Acronyms and
Abbreviations
Issue 01 (2010-12-31)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
42
Acronym or Abbreviation Expansion
NTC negative temperature coefficient
PBCCH Packet Broadcast Control Channel
PCB printed circuit board
PDU protocol data unit
PMU Power manage Unit
RF radio frequency
RoHS Restriction of the use of certain Hazardous
Substances
RTC real-time clock
SIM Subscriber Identity Module
TTL transistor-transistor logic
TVS transient voltage suppressor
VSWR voltage standing wave ratio