User's Manual

Shenzhen Neoway Technology Co., Ltd. Page 29 of 32
8. Package
M660 modules are packaged in sealed bags on delivery to guarantee a long shelf life. Package the
modules again in case of opening for any reasons.
If exposed in air for more than 48 hours at conditions not worse than 30°C/60% RH, a baking
procedure should be done before SMT. Or, if the indication card shows humidity greater than 20%,
the baking procedure is also required.
The baking should last for at least 24 hours at 90℃.
9. Terms and Abbreviations
ADC
Analog-Digital Converter
AGC
Automatic Gain Control
AMR
Acknowledged multirate (speech coder)
CSD
Circuit Switched Data
CPU
Central Processing Unit
DCE
Data Communication Equipment
DTE
Data Terminal Equipment
DTR
Data Terminal Ready
EFR
Enhanced Full Rate
EMC
Electromagnetic Compatibility
EMI
Electro Magnetic Interference
ESD
Electronic Static Discharge
FR
Full Rate
GPRS
General Packet Radio Service
GSM
Global Standard for Mobile Communications
HR
Half Rate
IC
Integrated Circuit
IMEI
International Mobile Equipment Identity
LED
Light Emitting Diode
PCB
Printed Circuit Board
RAM
Random Access Memory
RF
Radio Frequency
SIM
Subscriber Identification Module
SMS
Short Message Service
SMT
Surface Mounted Technology
SRAM
Static Random Access Memory