Huawei EM820W User manual
HUAWEI EM820W HSPA+ PC Embedded Module
User Guide
Issue 01
Date 2010-12-30
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HUAWEI EM820W HSPA+ PC Embedded Module
User Guide About This Document
Issue 01 (2010-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
About This Document
History
Version Date Chapter
Descriptions
01 2010-12-30 Creation
HUAWEI EM820W HSPA+ PC Embedded Module
User Guide Contents
Issue 01 (2010-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd. i
Contents
1 Product Overview ............................................................................................................................1
2 Introduction to the Development Board.........................................................................................2
3 Functions of the Interfaces on the Development Board ................................................................4
3.1 Power Interface ............................................................................................................................. 4
3.2 SIM Card Socket........................................................................................................................... 4
3.3 Mini PCI Express Interface.......................................................................................................... 5
3.4 RF Antenna Interface ................................................................................................................... 6
4 Usage Guide .....................................................................................................................................7
4.1 Usage of the EM820W Simplified Board................................................................................... 7
4.2 Test Points on the EM820W Simplified Board.......................................................................... 8
4.3 Material List ................................................................................................................................... 9
HUAWEI EM820W HSPA+ PC Embedded Module
User Guide Tables
Issue 01 (2010-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd. ii
Tables
Table 4-1 Material list ......................................................................................................................... 9
HUAWEI EM820W HSPA+ PC Embedded Module
User Guide Figures
Issue 01 (2010-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd. iii
Figures
Figure 1-1 Overall appearance of an EM820W module ............................................................... 1
Figure 2-1 Structure of the EM820W simplified board.................................................................. 2
Figure 3-1 External power interface circuit..................................................................................... 4
Figure 3-2 SIM card circuit................................................................................................................ 5
Figure 3-3 Mini PCI Express Interface ............................................................................................ 5
Figure 3-4 RF antenna interface ...................................................................................................... 6
Figure 4-1 Connection between the module and the CMU200 ................................................... 7
Figure 4-2 Connection between the module and the antennas .................................................. 8
Figure 4-3 Test points on the module .............................................................................................. 8
HUAWEI EM820W HSPA+ PC Embedded Module
User Guide Product Overview
Issue 01 (2010-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd. 1
1 Product Overview
Figure 1-1 shows the overall appearance of an EM820W module.
Figure 1-1 Overall appearance of an EM820W module
Antenna interface
It is used to connect and fix an antenna.
Fixing hole
A screw, metal fastener, and nut are used to fix an EM820W module on a
development board through this fixing hole.
PCI Express connector
It is connected to the PC PCI Express connector.
HUAWEI EM820W HSPA+ PC Embedded Module
User Guide Introduction to the Development Board
Issue 01 (2010-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd. 2
2 Introduction to the Development Board
The EM820W module works inside the portable computer through the Mini PCI-E
interface, which is inconvenient for the user during measurement and commission.
With the EM820W simplified board, the signals that the EM820W module needs on
the Mini PCI-E interface are simulated outside the portable computer. The signals are
used for product development, commission, and software upgrade on production
lines.
Figure 2-1 shows the board structure.
Figure 2-1 Structure of the EM820W simplified board
The test points shown in the preceding figure are described as follows:
1. USB connector: Mini USB B type, side-plugged USB connector;
2. Mini PCI-E connector: female, 52-pin, straight, SMT;
3. Connector locker: used together with the Mini PCI-E connector for fixing the
module;
4. SIM card holder: used for SIM card insertion;
5. RF connector: coaxial connector, straight, male, SMT;
6. RF connector: RF switch, bent, female, SMT;
HUAWEI EM820W HSPA+ PC Embedded Module
User Guide Introduction to the Development Board
Issue 01 (2010-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd. 3
On the module, the Mini-PCI interface signals are: voltage of power, SIM card
interface, USB D+, D-interface, LED indicator interface. The implementation of
signals on the simplified board is as follows:
1. Voltage of power: The USB port of the PC supplies the power (5 V), which is
converted into 3.3 V power for the module.
2. SIM card interface: The SIM card slot is expanded outside the board.
3. Data communication: The module exchanges data with the PC through the USB
port.
4. LED indicator: LED indicators are expanded outside the board.
In addition, the antenna adapter is also expanded outside the board for connecting to
an external antenna to perform the current network test
HUAWEI EM820W HSPA+ PC Embedded Module
User Guide
Functions of the Interfaces on the
Development Board
Issue 01 (2010-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd. 4
3 Functions of the Interfaces on the
Development Board
3.1 Power Interface
The power interface is used to connect an external Mini USB Port to the EM820W
module. Thus, power can be supplied to the module. Figure 3-1 shows a circuit of the
external power interface.
Figure 3-1 External power interface circuit
3.2 SIM Card Socket
A development board is equipped with a SIM card socket. You can easily insert and
remove a SIM card. Figure 3-2 shows a SIM card circuit.
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