SimCom SIM908 User Manual

SIM908 Document
Note: This device complies with part 15 Rules. Operation is subject to the following two conditions: (1) This
device may not cause harmful interference, and (2) this device must accept any interference received, including
interference that may cause undesired operation.
If this equipment is installed in a host, We can find the ID label when opening the host. For label requirement
when transmitter module is installed in a host, the host shall have an additional permanent label referring to the
enclosed module:"Contains Transmitter Module FCC ID: UDV-2011091310088" or "Contains FCC ID:
UDV-2011091310088".
This equipment has a GSM antenna and a GPS antenna, the GPS antenna peak gain is 5 dBi and modulation
type is BPSK; the GSM antenna peak gain is 3 dBi and modulation type is GMSK.
WARNING: Changes or modifications to this unit not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment. The antenna of the product, under normal
use condition is at least 24.22 cm away from the body of the user,the user must keeping at least 24.22cm
distance to the antenna.
The device has been evaluated to meet general RF exposure requirement. The device can be used in portable
exposure condition without restriction.
1. SIM908 Description
1.1 Summarize
Designed for global market, SIM908 is integrated with a high performance GSM/GPRS engine and a GPS engine.
The GSM/GPRS engine is a quad-band GSM/GPRS module that works on frequencies GSM 850MHz, EGSM
900MHz, DCS 1800MHz and PCS 1900MHz. SIM908 features GPRS multi-slot class 10/ class 8 (optional) and
supports the GPRS coding schemes CS-1, CS-2, CS-3 and CS-4. The GPS solution offers best- in-class
acquisition and tracing sensitivity, Time-To-First-Fix (TTFF) and accuracy.
With a tiny configuration of 30*30*3.2mm, SIM908 can meet almost all the space requirements in user
applications, such as M2M, smart phone, PDA, tracker and other mobile devices.
SIM908 has 80 SMT pads, and provides all hardware interfaces between the module and customers' boards.
Serial port and debug port can help user easily develop user's applications.
GPS Serial port.
Two audio channels include two audio inputs and two audio outputs. These can be easily configured by AT
command.
Charging interface.
Programmable general purpose input and output.
The keypad and SPI display interfaces will give users the flexibility to develop customized applications.
RF pad and connector interface.
SIM908 is designed with power saving technique so that the current consumption is as low as 1.0mA in sleep
SIM908 User Manual
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