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HUAWEI EM820W HSPA+ PC Embedded Module
Hardware Guide
Acronym or Abbreviation
NTC
PBCCH
PCB
PDU
PMU
RF
RoHS
RTC
SIM
TTL
TVS
UART
VSWR
Issue 01 (2010-12-09)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Appendix B Acronyms and
Expansion
negative temperature coefficient
Packet Broadcast Control Channel
printed circuit board
protocol data unit
Power manage Unit
radio frequency
Restriction of the use of certain Hazardous
Substances
real-time clock
Subscriber Identity Module
transistor-transistor logic
transient voltage suppressor
universal asynchronous receiver-transmitter
voltage standing wave ratio
Abbreviations
42
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