Huawei ME909 manual EMC and ESD Features, Uim − Usb

HUAWEI ME909 Series Mini PCIe Module
Hardware Guide		Electrical and Reliability Features
	Item	Test Condition	Standard
	Sine vibration	Frequency range: 5 Hz to 200 Hz	IEC60068
		Acceleration: 10 m/s2
		Frequency scan rate: 1 oct/min
		Test period: 3 axial directions. Five
		circles for each axial direction.
	Shock test	Half-sine wave shock	IEC60068
		Peak acceleration: 300 m/s2
		Shock duration: 11 ms
		Test period: 6 axial directions. One
		shock for each axial direction.
	Clash test	Half-sine wave	IEC60068
		Peak acceleration: 180 m/s2
		Pulse duration: 6 ms
		Repetition time: 6 directions. 1000
		times for each direction.
	Drop test	First case: 0.3 m in height. Drop the	IEC60068
		ME909 module on the marble terrace
		with one surface facing downwards
		twice. Six surfaces should be tested.
		Second case: 0.8 m in height. Drop
		the ME909 module on the marble
		terrace with one surface facing
		downwards twice. Six surfaces
		should be tested.

5.8 EMC and ESD Features

EMC tests have to be performed on the application as soon as possible to detect any potential problems.

Special attention should be paid to the following:

Possible harmful emissions radiated by the application to the RF receiver in the receiver band.

ESD protection is mandatory on all signals which are externally accessible

Typically, ESD protection is mandatory for the following:

−UIM

−USB

Length of the USIM interface lines (preferably <10 cm).

EMC protection on audio input/output (filters against 900 MHz emissions).

Ground plane: recommends a common ground plane for analog/digital/RF grounds.

	Huawei Proprietary and Confidential	43
Issue 0.1 (2013-06-09)	Copyright © Huawei Technologies Co., Ltd.