Sierra Wireless AirPrime EM7355, EM7455 Hardware Integration Manual

AirPrime EM7355

Hardware Integration Guide

4112880

Rev 1

Distribution under NDA only

Contents subject to change

Preface

Important
Notice

Safety and
Hazards

Due to the nature of wireless communications, transmission and reception of data
can never be guaranteed. Data may be delayed, corrupted (i.e., have errors) or be
totally lost. Although significant delays or losses of data are rare when wireless
devices such as the Sierra Wireless modem are used in a normal manner with a
well-constructed network, the Sierra Wireless modem should not be used in
situations where failure to transmit or receive data could result in damage of any
kind to the user or any other party, including but not limited to personal injury,
death, or loss of property. Sierra Wireless accepts no responsibility for damages
of any kind resulting from delays or errors in data transmitted or received using
the Sierra Wireless modem, or for failure of the Sierra Wireless modem to
transmit or receive such data.

Do not operate the Sierra Wireless modem in areas where blasting is in progress,
where explosive atmospheres may be present, near medical equipment, near life
support equipment, or any equipment which may be susceptible to any form of
radio interference. In such areas, the Sierra Wireless modem MUST BE
POWERED OFF. The Sierra Wireless modem can transmit signals that could
interfere with this equipment.

Do not operate the Sierra Wireless modem in any aircraft, whether the aircraft is
on the ground or in flight. In aircraft, the Sierra Wireless modem MUST BE
POWERED OFF. When operating, the Sierra Wireless modem can transmit
signals that could interfere with various onboard systems.

Limitation of
Liability

Note: Some airlines may permit the use of cellular phones while the aircraft is on the
ground and the door is open. Sierra Wireless modems may be used at this time.

The driver or operator of any vehicle should not operate the Sierra Wireless
modem while in control of a vehicle. Doing so will detract from the driver or
operator's control and operation of that vehicle. In some states and provinces,
operating such communications devices while in control of a vehicle is an offence.

The information in this manual is subject to change without notice and does not
represent a commitment on the part of Sierra Wireless. SIERRA WIRELESS AND
ITS AFFILIATES SPECIFICALLY DISCLAIM LIABILITY FOR ANY AND ALL
DIRECT, INDIRECT, SPECIAL, GENERAL, INCIDENTAL, CONSEQUENTIAL,
PUNITIVE OR EXEMPLARY DAMAGES INCLUDING, BUT NOT LIMITED TO,
LOSS OF PROFITS OR REVENUE OR ANTICIPATED PROFITS OR REVENUE
ARISING OUT OF THE USE OR INABILITY TO USE ANY SIERRA WIRELESS
PRODUCT, EVEN IF SIERRA WIRELESS AND/OR ITS AFFILIATES HAS BEEN
ADVISED OF THE POSSIBILITY OF SUCH DAMAGES OR THEY ARE
FORESEEABLE OR FOR CLAIMS BY ANY THIRD PARTY.

Notwithstanding the foregoing, in no event shall Sierra Wireless and/or its
affiliates aggregate liability arising under or in connection with the Sierra Wireless
product, regardless of the number of events, occurrences, or claims giving rise to
liability, be in excess of the price paid by the purchaser for the Sierra Wireless
product.

Rev 1 Dec.12 Proprietary and Confidential - Content s sub jec t to ch an ge 3

Hardware Integration Guide

Patents This product may contain technology developed by or for Sierra Wireless Inc.

This product includes technology licensed from QUALCOMM®.

This product is manufactured or sold by Sierra Wireless Inc. or its affiliates under
one or more patents licensed from InterDigital Group.

Copyright ©2012 Sierra Wireless. All rights reserved.

Trademarks AirCard

AirPrime™, Watcher™, and the Sierra Wireless logo are trademarks of Sierra
Wireless.

Windows® is a registered trademark of Microsoft Corporation.

QUALCOMM® is a registered trademark of QUALCOMM Incorporated. Used
under license.

Other trademarks are the property of their respective owners.

Contact
Information

Sales Desk: Phone: [phone]

Post: Sierra Wireless

Technical support: [e-mail]
RMA support: [e-mail]
Fax: [phone]

®

is a registered trademark of Sierra Wireless. Sierra Wireless™,

Hours: 8:00 AM to 5:00 PM Pacific Time
E-mail: [e-mail]

13811 Wireless Way
Richmond, BC
Canada V6V 3A4

Web: www.sierrawireless.com

Consult our website for up-to-date product descriptions, documentation,

Revision

application notes,

www.sierrawireless.com

firmware upgrades, troubleshooting tips, and press releases:

History

Revision
number

1 December 2012 FCC / IC certification

4 Proprietary and Confidential - Contents subject to change 4112880

Release date Changes

Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Required connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Module power states . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

RF Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

RF connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Shielding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Antenna and cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Ground connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Interference and sensitivity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Interference from other wireless devices . . . . . . . . . . . . . . . . . . . . . . . . .14

Host-generated RF interference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Device-generated RF interference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Methods to mitigate decreased Rx performance . . . . . . . . . . . . . . . . . . .15

Radiated Spurious Emissions (RSE) . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Radiated sensitivity measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Regulatory Compliance and Industry Certifications . . . . . . . . . . . . . . . . . . .17

Important notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Safety and hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Important compliance information for North American users . . . . . . . . . . . . 18

Acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Rev 1 Dec.12 Proprietary and Confidential - Contents subject to change 5

Hardware Integration Guide

6 Proprietary and Confidential - Contents subject to change 4112880

1: Introduction

The Sierra Wireless EM7355 Embedded Module is an M.2 modem
that provides LTE, DC-HSPA+, HSPA+, HSDPA, HSUPA, WCDMA,
GSM, GPRS, EDGE, CDMA, and GNSS connectivity for notebook,
ultrabook, and tablet computers over several radio frequency bands.
The device also supports 2G

Accessories

A hardware development kit is available for AirPrime M.2 modules.
The kit contains hardware components for evaluating and developing
with the module, including:

• Development board

• Cables

• Antennas

• Other accessories

For over-the-air LTE testing, ensure that suitable antennas are used.

Required connectors

Ta bl e 1-1 describes the connectors used to integrate the EM7355

Embedded Module into your host device.

1

/ 3G roaming.

Table 1-1: Required host-module connectors

Connector type Description

RF cables • Mate with M.2-spec connectors

• Three connector jacks

EDGE (67 pin) • Slot B compatible — Per the M.2 standard (PCI Express NGFF

(M.2) Electromechanical Specification Revision 0.7), a generic

75 pin position EDGE connector on the motherboard uses a
mechanical key to mate with the 67 pin notched module
connector.

• Manufacturers include LOTES (part #APCI0018-P001A01),

Kyocera, JAE, Tyco, and Longwell.

SIM • Industry-standard connector.

Rev 1 Dec.12 Proprietary and Confidential - Contents subject to change 7

Hardware Integration Guide

8 Proprietary and Confidential - Contents subject to change 4112880

2: Power

Power supply

The host provides power to the EM7355 through multiple power and
ground pins. The host must provide safe and continuous power (via
battery or a regulated power supply) at all times; the module does not
have an independent power supply, or protection circuits to guard
against electrical issues.

For detailed pinout and voltage / current requirements of this module,
see the AirPrime EM7355 Product Technical Specification &
Customer Design Guidelines.

Module power states

The module has five power states, as described in Ta bl e 2-1.

Table 2-1: Module power states

2

State Details

Normal
(Default

state)

Low power
(‘Airplane

mode’)

• Module is active

• Default state. Occurs when VCC is first applied, Full_Card_Power_Off# is

deasserted (pulled high), and W_DISABLE#1 is deasserted

• Module is capable of placing / receiving calls, or establishing data connections on the

wireless network

• Current consumption is affected by several factors, including:

• Radio band being used

• Transmit power

• Receive gain settings

• Data rate

• Module is active

• Module enters this state:

• Under host interface control:

• Automatically, when critical temperature or voltage trigger limits have been

· Host issues AT+CFUN=0 ([1] AT Command Set for User Equipment (UE)

(Release 6) (Doc# 3GPP TS 27.007))), or

· Host asserts W_DISABLE#1, after AT!PCOFFEN=0 has been issued.

reached))

Host is powered

Module is powered

USB interface active

   

   

RF enabled

Rev 1 Dec.12 Proprietary and Confidential - Contents subject to change 9

Hardware Integration Guide

Table 2-1: Module power states (Continued)

State Details

Sleep • Normal state of module between calls or data connections

• Module cycles between wake (polling the network) and sleep, at network provider-

determined interval.

Host is powered

Module is powered

USB interface active

   

RF enabled

Off • Host keeps module powered off by asserting Full_Card_Power_Off# (signal pulled

low or left floating)

• Module draws minimal current

• See Full_Card_Power_Off# and RESET# on page 41 for more information.

Disconnected • Host power source is disconnected from the module and all voltages associated with

the module are at 0 V.

   

   

10 Proprietary and Confidential - Contents subject to change 4112880

3: RF Specifications

The EM7355 operates on the frequency bands listed below.

Table 3-1: LTE frequency band support

Band Frequencies

3

Band 2

Band 4 (AWS)

Band 5

Band 13 Tx: 777–787 MHz

Band 17

Band 25

Tx: 1850–1910 MHz
Rx: 1930–1990 MHz

Tx: 1710–1755 MHz
Rx: 2110–2155 MHz

Tx: 824–849 MHz
Rx: 869–894 MHz

Rx: 746–756 MHz
Tx: 704–716 MHz

Rx: 734–746 MHz
Tx: 1850–1915 MHz

Rx: 1930–1995 MHz

Table 3-2: WCDMA frequency band support

Band Frequencies

Band 1
WCDMA 2100

Band 2
WCDMA 1900

Band 4
AWS 1700/2100

Tx: 1920–1980 MHz
Rx: 2110–2170 MHz

Tx: 1850–1910 MHz
Rx: 1930–1990 MHz

Tx: 1710–1755 MHz
Rx: 2110–2155 MHz

1

Band 5
WCDMA 850

Band 8
WCDMA 900

1. WCDMA channel spacing is 5 MHz, but this can be adjusted to
optimize performance in a particular deployment scenario.

Tx: 824–849 MHz
Rx: 869–894 MHz

Tx: 880–915 MHz
Rx: 925–960 MHz

Table 3-3: GSM frequency band support

Band Frequencies

GSM 850 Tx: 824–849 MHz

Rx: 869–894 MHz

EGSM 900 Tx: 880–915 MHz

Rx: 925–960 MHz

Rev 1 Dec.12 Proprietary and Confidential - Contents subject to change 11

Hardware Integration Guide

Table 3-3: GSM frequency band support (Continued)

Band Frequencies

GSM 1800 Tx: 1710–1785 MHz

GSM 1900 Tx: 1850–1910 MHz

Rx: 1805–1880 MHz

Rx: 1930–1990 MHz

Table 3-4: CDMA frequency band support

Band Frequencies

Band Class 0
(Cellular 800 MHz)

Band Class 1
(PCS)

Band Class 10
(Secondary 800 MHz)

1. BC10 subclasses 2 and 3 (system designator C and D) are sup­ported

Tx: 824–849 MHz
Rx: 869–894 MHz

Tx: 1850–1910 MHz
Rx: 1930–1990 MHz

Tx: 816–824 MHz

1

Rx: 861–869 MHz

Table 3-5: GNSS frequency band support

Band Frequencies

Narrow-band GPS Rx: 1575.42 MHz
Wide-band GPS + GLONASS Rx: 1565–1606 MHz

RF connections

When attaching antennas to the module:

• Use any of the following (or compatible) 2x2 mm 
RF receptacle connectors to attach antennas to the module’s connection
points

• Match coaxial connections between the module and the antenna to 50 .

• Minimize RF cable losses to the antenna; the recommended maximum cable

loss for antenna cabling is 0.5

• To ensure best thermal performance, if possible use the mounting hole to
attach (ground) the device to a metal chassis.

Note: If the antenna connection is shorted or open, the modem will not sustain permanent
damage.

Shielding

The module is fully shielded to protect against EMI and must not be removed.

dB.

12 Proprietary and Confidential - Contents subject to change 4112880

RF Specifications

Antenna and cabling

When selecting the antenna and cable, it is critical to RF performance to match
antenna gain and cable loss.

Choosing the correct antenna and cabling

When matching antennas and cabling:

• The antenna (and associated circuitry) should have a nominal impedance of

50

 with a return loss of better than 10 dB across each frequency band of

operation.

• The system gain value affects both radiated power and regulatory (FCC, IC,

CE, etc.) test results.

Designing custom antennas

Consider the following points when designing custom antennas:

• A skilled RF engineer should do the development to ensure that the RF

performance is maintained.

• If both UMTS and CDMA modules will be installed in the same platform, you

may want to develop separate antennas for maximum performance.

Determining the antenna’s location

When deciding where to put the antennas:

• Antenna location may affect RF performance. Although the module is

shielded to prevent interference in most applications, the placement of the
antenna is still very important
high levels of broadband or spurious noise can degrade the module’s perfor
mance.

• Connecting cables between the module and the antenna must have 50 

impedance. If the impedance of the module is mismatched, RF performance
is reduced significantly.

• Antenna cables should be routed, if possible, away from noise sources

(switching power supplies, LCD assemblies, etc.). If the cables are near the
noise sources, the noise may be coupled into the RF cable and into the
antenna.

— if the host device is insufficiently shielded,

-

Disabling the diversity antenna

• For LTE / UMTS bands, use the AT command !RXDEN=0 to disable receive

diversity or

• For CDMA bands, use the AT command !DIVERSITY to enable or disable

receive diversity.

Note: A diversity antenna is used to improve connection quality and reliabili ty through
redundancy. Because two antennas may experience difference interference effects (signal
distortion, delay, etc.), when one antenna receives a degraded signal, the other may not be
similarly affected.

!RXDEN=1 to enable receive diversity.

Rev 1 Dec.12 Proprietary and Confidential - Content s sub jec t to ch an ge 13

Hardware Integration Guide

Ground connection

When connecting the module to system ground:

• Prevent noise leakage by establishing a very good ground connection to the

• Connect to system ground using the module’s mounting hole.

• Minimize ground noise leakage into the RF.

Interference and sensitivity

Several interference sources can affect the module’s RF performance
(RF
generated RF.

RF desense can be addressed through a combination of mitigation techniques
(
sensitivity measurement (Radiated sensitivity measurement on page 16).

module through the host connector.

Depending on the host board design, noise could potentially be coupled to
the module from the host board. This is mainly an issue for host designs that
have signals traveling along the length of the module, or circuitry operating at
both ends of the module interconnects.

desense). Common sources include power supply noise and device-

Methods to mitigate decreased Rx performance on page 15) and radiated

Note: The EM7355 is based on ZIF (Zero Intermediate Frequency) technologies. When
performing EMC (Electromagnetic Compatibility) tests, there are no IF (Intermediate
Frequency) components from the module to consider.

Interference from other wireless devices

Wireless devices operating inside the host device can cause interference that
affects the module.

To determine the most suitable locations for antennas on your host device,
evaluate each wireless device’s radio system, considering the following:

• Any harmonics, sub-harmonics, or cross-products of signals generated by
wireless devices that fall in the module’s Rx range may cause spurious
response, resulting in decreased Rx performance.

• The Tx power and corresponding broadband noise of other wireless devices
may overload or increase the noise floor of the module’s receiver, resulting in
Rx desense.

The severity of this interference depends on the closeness of the other antennas
to the module’s antenna. To determine suitable locations for each wireless
device’s antenna, thoroughly evaluate your host device’s design.

Host-generated RF interference

All electronic computing devices generate RF interference that can negatively
affect the receive sensitivity of the module.

14 Proprietary and Confidential - Contents subject to change 4112880

RF Specifications

Proximity of host electronics to the antenna in wireless devices can contribute to
decreased Rx performance. Components that are most likely to cause this
include:

• Microprocessor and memory

• Display panel and display drivers

• Switching-mode power supplies

Device-generated RF interference

The module can cause interference with other devices. Wireless devices such as
AirPrime embedded modules transmit in bursts (pulse transients) for set durations
(RF burst frequencies). Hearing aids and speakers convert these burst
frequencies into audible frequencies, resulting in audible noise.

Methods to mitigate decreased Rx performance

It is important to investigate sources of localized interference early in the design
cycle. To reduce the effect of device-generated RF on Rx performance:

• Put the antenna as far as possible from sources of interference. The

drawback is that the module may be less convenient to use.

• Shield the host device. The module itself is well shielded to avoid external

interference. However, the antenna cannot be shielded for obvious reasons.
In most instances, it is necessary to employ shielding on the components of
the host device (such as the main processor and parallel bus) that have the
highest RF emissions.

• Filter out unwanted high-order harmonic energy by using discrete filtering on

low frequency lines.

• Form shielding layers around high-speed clock traces by using multi-layer

PCBs.

• Route antenna cables away from noise sources.

Radiated Spurious Emissions (RSE)

When designing an antenna for use with AirPrime embedded modules, the host
device with an AirPrime embedded module must satisfy the radiated spurious
emission (RSE) test cases described in:

• (CDMA) Refer to CDMA standards for receive-only mode, and local

• CE/ETSI EN 301 908 (WCDMA), test numbers 5.3.1 (‘Radiated Emissions

• CE/ETSI EN 301 511 (GSM), test 5.2.16 (‘Radiated Spurious Emissions - MS

Note that antenna impedance affects radiated emissions, which must be
compared against the conducted 50-ohm emissions baseline. (AirPrime
embedded modules meet the 50-ohm conducted emissions requirement.)

Rev 1 Dec.12 Proprietary and Confidential - Content s sub jec t to ch an ge 15

regulatory bodies for transmit mode (transmitter is operating).

(UE)’)

allocated a channel’). This test uses the procedure and requirement outlined
in 3GPP 51.010 (GSM) section 12.2.1 of the same test name.

Hardware Integration Guide

Note: GSM spurious emissions are most likely to have RSE issues, but in general, RSE
requirements must be met on all models with user-designed antennas.

Radiated sensitivity measurement

A wireless host device contains many noise sources that contribute to a reduction
in Rx performance.

To determine the extent of any receiver performance desensitization due to self­generated noise in the host device, over-the-air (OTA) or radiated testing is
required. This testing can be performed by Sierra Wireless or you can use your
own OTA test chamber for in-house testing.

16 Proprietary and Confidential - Contents subject to change 4112880

4: Regulatory Compliance and Industry
Certifications

This module is designed to meet, and upon commercial release, will
meet the requirements of the following regulatory bodies and
regulations, where applicable:

• Federal Communications Commission (FCC) of the United States

• The Certification and Engineering Bureau of Industry Canada

(IC)

• The National Communications Commission (NCC) of Taiwan,
Republic of China

Upon commercial release, the following industry certifications will
have been obtained, where applicable:

• GCF-CC (For Verizon 2G / 3G approval)

• PTCRB

• CDG2

Additional certifications may be obtained upon customer request —
contact your Sierra Wireless account representative for details.

Additional testing and certification may be required for the end
product with an embedded EM7355 modem and are the
responsibility of the
services-based assistance to OEMs with the testing and certification
process, if required.

OEM. Sierra Wireless offers professional

4

Important notice

Because of the nature of wireless communications, transmission and
reception of data can never be guaranteed. Data may be delayed,
corrupted (i.e., have errors) or be totally lost. Although significant
delays or losses of data are rare when wireless devices such as the
Sierra Wireless modem are used in a normal manner with a well­constructed network, the Sierra Wireless modem should not be used
in situations where failure to transmit or receive data could result in
damage of any kind to the user or any other party, including but not
limited to personal injury, death, or loss of property. Sierra Wireless
and its affiliates accept no responsibility for damages of any kind
resulting from delays or errors in data transmitted or received using
the Sierra Wireless modem, or for failure of the Sierra Wireless
modem to transmit or receive such data.

Safety and hazards

Do not operate your EM7355 modem:

• In areas where blasting is in progress

Rev 1 Dec.12 Proprietary and Confidential - Contents subject to change 17

Hardware Integration Guide

• Where explosive atmospheres may be present including refuelling points, fuel

• Near medical equipment, life support equipment, or any equipment which

In an aircraft, the EM7355 modem MUST BE POWERED OFF. Otherwise, the
EM7355 modem can transmit signals that could interfere with various onboard
systems and may be dangerous to the operation of the aircraft or disrupt the
cellular network. Use of a cellular phone in an aircraft is illegal in some
jurisdictions. Failure to observe this instruction may lead to suspension or denial
of cellular telephone services to the offender, or legal action or both.

Some airlines may permit the use of cellular phones while the aircraft is on the
ground and the door is open. The EM7355 modem may be used normally at this
time.

Important compliance information for
North American users

depots, and chemical plants

may be susceptible to any form of radio interference. In such areas, the
EM7355 modem MUST BE POWERED OFF. Otherwise, the EM7355 modem
can transmit signals that could interfere with this equipment.

Note: Details are preliminary and subject to change.

The EM7355 modem has been granted modular approval for mobile applications.
Integrators may use the EM7355 modem in their final products without additional
FCC

/ IC (Industry Canada) certification if they meet the following conditions.

Otherwise, additional FCC

1. At least 20 cm separation distance between the antenna and the user’s body
must be maintained at all times.

2. To comply with FCC / IC regulations limiting both maximum RF output power
and human exposure to RF radiation, the maximum antenna gain including
cable loss in a mobile-only exposure condition must not exceed:

· 6.5 dBi in Cellular band

· 3.0 dBi in PCS band

· 3.0 dBi in LTE Band 2

· 6.0 dBi in LTE Band 4

· 6.5 dBi in LTE Band 5

· 9.0 dBi in LTE Band 13 (Note: LTE Band 13 is not permitted in Canada.)

· 9.0 dBi in LTE Band 17 (Note: LTE Band 17 is not permitted in Canada.)

· 3.0 dBi in LTE Band 25

3. The EM7355 modem may transmit simultaneously with other collocated radio

transmitters within a host device, provided the following conditions are met:

· Each collocated radio transmitter has been certfied by FCC / IC for mobile

application.

· At least 20 cm separation distance between the antennas of the collocated

transmitters and the user’s body must be maintained at all times.

/ IC approvals must be obtained.

18 Proprietary and Confidential - Contents subject to change 4112880

Regulatory Compliance and Industry Certifications

· The output power and antenna gain must not exceed the limits and configu­rations stipulated in the following table.

Device Technology Band Frequency

EM7355
Embedded
Module

LTE 2 1850–1910 24 3

4 1710–1755 24 6
5 824–849 24 3
13 777–787 24 6
17 704–716 24 6
25 1850–1915 24 3

UMTS 2 1850–1910 24 3

4 1710–1755 24 6
5 824–849 24 3

GSM 850 824–849 33 3

1900 1850–1910 30 3

CDMA BC0 824–849 25 3

BC1 1850–1910 25 3
BC10 816–823.975 25 3

(MHz)

Maximum

conducted power

(dBm)

Maximum

antenna gain

(dBi)

Collocated
transmitters

1. Valid collocated transmitter combinations: WLAN+BT; WiMAX+BT.
(WLAN+WiMAX+BT is not permitted.)

WLAN 2400–2500 29 5.0

1

5150–5850 29 5.0

WiMAX 2300–2400 29 5.0

2500–2700 29 5.0
3300–3800 29 5.0

BT 2400–2500 15 5.0

4. A label must be affixed to the outside of the end product into which the
EM7355 modem is incorporated, with a statement similar to the following:

· This device contains FCC ID: N7NEM7355

Contains transmitter module IC: 2417C-EM7355 where 2417C-EM7355
is the module’s certification number.

5. A user manual with the end product must clearly indicate the operating

requirements and conditions that must be observed to ensure compliance
with current FCC

/ IC RF exposure guidelines.

Rev 1 Dec.12 Proprietary and Confidential - Content s sub jec t to ch an ge 19

Hardware Integration Guide

The end product with an embedded EM7355 modem may also need to pass the
FCC Part 15 unintentional emission testing requirements and be properly
authorized per FCC Part 15.

Note: If this module is intended for use in a portable device, you are responsible
for separate approval to satisfy the SAR requirements of FCC Part 2.1093 and IC
RSS-102.

20 Proprietary and Confidential - Contents subject to change 4112880

5: Acronyms

Table 5-1: Acronyms and definitio ns

Acronym or term Definition

5

1xEV-DO

1X

3GPP
8PSK
AGC
A-GPS
A-GNSS
API
BER
BLER

Single Carrier (1X) EVolution – Data Only. A high-speed standard for cellular

packet data communications.

Supports Internet connections with data rates up to 3.1 Mbps (downlink from the
network) and 1.8 Mbps (uplink to the network). Average data rates are roughly: for
Rev. A: 600 1300 kbps (downlink from the network) and 300 400 kbps (uplink to
the network); for Rev. 0: 400 700 kbps (downlink from the network) and 40 80
kbps (uplink to the network). Actual speed depends on the network conditions.
Compare to

Single Carrier (1X) Radio Transmission Technology. A high-speed standard for
cellular
Supports Internet connections with data rates up to 153 kbps (simultaneously in
each direction—downlink and uplink). Actual speed depends on the network
conditions. Compare to 1xEV-DO.

3rd Generation Partnership Project
Octagonal Phase Shift Keying
Automatic Gain Control
Assisted GPS
Assisted GNSS
Application Programming Interface
Bit Error Rate — A measure of receive sensitivity
Block Error Rate

1X.

packet data communications.

bluetooth
CAIT
CDG

CDMA

CQI
COM
CS
CW

Wireless protocol for data exchange over short distances
CDMA Air Interface Tool
CDMA Development Group—a consortium of companies that develop and

promote the products and services for
Code Division Multiple Access.

A wideband spread spectrum technique used in digital cellular, personal
communications services, and other wireless networks. Wide channels (1.25
MHz) are obtained through spread spectrum transmissions, thus allowing many
active users to share the same channel. Each user is assigned a unique digital
code, which differentiates the individual conversations on the same channel.

Channel Quality Indication
Communication port
Circuit-switched
Continuous waveform

CDMA wireless systems.

Rev 1 Dec.12 Proprietary and Confidential - Contents sub ject to change21

Hardware Integration Guide

Table 5-1: Acronyms and definitions (Continued)

Acronym or term Definition

dB

dBm

DC-HSPA+
DCS

DL
DUN
DRX
DSM
DUT
EDGE
eHRPD

Decibel = 10 x log10 (P1 / P2)

P1 is calculated power; P2 is reference power

Decibel = 20 x log10 (V1 / V2)

V1 is calculated voltage, V2 is reference voltage

A logarithmic (base 10) measure of relative power (dB for decibels); relative to
milliwatts (m). A dBm value will be 30 units (1000 times) larger (less negative)
than a dBW value, because of the difference in scale (milliwatts vs. watts).

Dual Carrier HSPA+
Digital Cellular System

A cellular communication infrastructure that uses the 1.8 GHz radio spectrum.
Downlink (network to mobile)
Dial-Up Networking

Discontinuous Reception
Distributed Shared Memory
Device Under Test
Enhanced Data rates for GSM Evolution
Evolved High Rate Packet Data — Enhances traditional 1xEV-DO to enable LTE

to CDMA handover.

EIRP
EMC
EMI
ERP
ESD
FCC

FDMA
FER
firmware

FOTA

FOV

Effective (or Equivalent) Isotropic Radiated Power
Electromagnetic Compatibility
Electromagnetic Interference
Effective Radiated P ow e r
Electrostatic Discharge
Federal Communications Commission

The U.S. federal agency that is responsible for interstate and foreign
communications. The FCC regulates commercial and private radio spectrum
management, sets rates for communications services, determines standards for
equipment, and controls broadcast licensing. Consult

Frequency Division Multiple Access
Frame Error Rate — A measure of receive sensitivity.
Software stored in ROM or EEPROM; essential programs that remain even when

the system is turned off. Firmware is easier to change than hardware but more
permanent than software stored on disk.

Firmware Over The Air — Technology used to download firmware upgrades
directly from the service provider, over the air.

Field Of View

www.fcc.gov.

22 Proprietary and Confidential - Contents subject to change 4112880

Table 5-1: Acronyms and definitions (Continued)

Acronym or term Definition

Acronyms

FSN

GCF
GLONASS

GMSK
GNSS
GPRS
GPS

GSM
Host
HSDPA
HSPA+
HSUPA
Hz

Factory Serial Number—A unique serial number assigned to the mini card during
manufacturing.

Global Certification Forum
Global Navigation Satellite System — A Russian system that uses a series of 24

satellites in middle circular orbit to provide navigational data.
Gaussian Minimum Shift Keying modulation
Global Navigation Satellite Systems (GPS plus GLONASS)
General Packet Radio Service

Global Positioning System
An American system that uses a series of 24 satellites in middle circular orbit to
provide navigational data.

Global System for Mobile Communications
The device into which an embedded module is integrated
High Speed Downlink Packet Access
Enhanced HSPA, as defined in 3GPP Release 7 and beyond
High Speed Uplink Packet Access
Hertz = 1 cycle / second

IC
IF
IMEI
IMS

inrush current
inter-RAT
IOT
IS

IS-2000
IS-95
LED

LHCP
LNA

Industry Canada
Intermediate Frequency
International Mobile Equipment Identity
IP Multimedia Subsystem — Architectural framework for delivering IP multimedia

services.
Peak current drawn when a device is connected or powered on
Radio Access Technology

Interoperability Testing
Interim Standard.

After receiving industry consensus, the TIA forwards the standard to ANSI for
approval.

3G radio standards for voice and data (CDMA only)
2G radio standards targeted for voice (cdmaONE)
Light Emitting Diode.

A semiconductor diode that emits visible or infrared light.
Left-Hand Circular Polarized

Low Noise Amplifier

Rev 1 Dec.12 Proprietary and Confidential - Contents sub ject to change23

Hardware Integration Guide

Table 5-1: Acronyms and definitions (Continued)

Acronym or term Definition

LPM
LPT
LTE

MCS
MHz
MEID

MIMO

NAS / AS
NC
NIC
NMEA
OEM

OFDMA

Low Power Mode
Line Print Terminal
Long Term Evolution—a high-performance air interface for cellular mobile

communication systems.
Modulation and Coding Scheme
Megahertz = 10e6 Hz
Mobile Equipment Identifier — The unique second-generation serial number

assigned to the minicard for use on the wireless network.
Multiple Input Multiple Output—wireless antenna technology that uses multiple

antennas at both transmitter and receiver side. This improves performance.
Network Access Server
No Connect

Network Interface Card
National Marine Electronics Association
Original Equipment Manufacturer—a company that manufactures a product and

sells it to a reseller.
Orthogonal Frequency Division Multiple Access

OMA DM
OTA
PA
packet

PCB
PCS

PDN
PMI
PSS
PST
PTCRB
QAM

QMI

Open Mobile Alliance Device Management — A device management protocol.
‘Over the air’ (or radiated through the antenna)
Power Amplifier
A short, fixed-length block of data, including a header, that is transmitted as a unit

in a communications network.
Printed Circuit Board

Personal Communication System
A cellular communication infrastructure that uses the 1.9 GHz radio spectrum.

Packet Data Network
Pre-coding Matrix Index
Primary synchronisation signal
Product Support Tools
PCS Type Certification Review Board
Quadrature Amplitude Modulation.

This form of modulation uses amplitude, frequency, and phase to transfer data on
the carrier wave.

Qualcomm MSM/Modem Interface

24 Proprietary and Confidential - Contents subject to change 4112880

Table 5-1: Acronyms and definitions (Continued)

Acronym or term Definition

Acronyms

QOS
QPSK
QPST
RAT
RF
RI
roaming

RSE
RSSI
SDK
SED
Sensitivity

(Audio)

Sensitivity (RF)

SG

Quality of Service
Quadrature Phase-Shift Keying
Qualcomm Product Support Tools
Radio Access Technology
Radio Frequency
Ring Indicator
A cellular subscriber is in an area where service is obtained from a cellular service

provider that is not the subscriber’s provider.
Radiated Spurious Emissions
Received Signal Strength Indication

Software Development Kit
Smart Error Detection
Measure of lowest power signal that the receiver can measure.

Measure of lowest power signal at the receiver input that can provide a prescribed
BER

/ BLER / SNR value at the receiver output.

An LTE signaling interface for SMS (“SMS over SGs”)

SIB
SIM
SIMO

SISO

SKU

SMS

S/N
SNR
SOF
SSS

System Information Block
Subscriber Identity Module. Also referred to as USIM or UICC.
Single Input Multiple Output—smart antenna technology that uses a single

antenna at the transmitter side and multiple antennas at the receiver side. This
improves performance and security.

Single Input Single Output—antenna technology that uses a single antenna at
both the transmitter side and the receiver side.

Stock Keeping Unit—identifies an inventory item: a unique code, consisting of
numbers or letters and numbers, assigned to a product by a retailer for purposes
of identification and inventory control.

Short Message Service.
A feature that allows users of a wireless device on a wireless network to receive
or transmit short electronic alphanumeric messages (up to 160 characters,
depending on the service provider).

Signal-to-noise (ratio)
Signal-to-Noise Ratio
Start of Frame — A USB function.
Secondary synchronisation signal.

Rev 1 Dec.12 Proprietary and Confidential - Contents sub ject to change25

Hardware Integration Guide

Table 5-1: Acronyms and definitions (Continued)

Acronym or term Definition

SUPL
TIA/EIA

TIS
TRP
UDK
UE
UICC
UL
UMTS
USB
USIM
VCC
VSWR

Secure User Plane Location
Telecommunications Industry Association / Electronics Industry Association.

A standards setting trade organization, whose members provide communications
and information technology products, systems, distribution services and
professional services in the United States and around the world. Consult

www.tiaonline.org.

Total Isotropic Sensitivity
Total Radiated Power
Universal Development Kit (for PCI Express Mini Cards)
User Equipment
Universal Integrated Circuit Card (Also referred to as a SIM card.)
Uplink (mobile to network)
Universal Mobile Telecommunications System
Universal Serial Bus
Universal Subscriber Identity Module (UMTS)
Supply voltage
Voltage Standing Wave Ratio

WAN
WCDMA
WLAN
ZIF

Wide Area Network
Wideband Code Division Multiple Access (also referred to as UMTS)
Wireless Local Area Network
Zero Intermediate Frequency

26 Proprietary and Confidential - Contents subject to change 4112880

Index

A

accessories, 7
acronyms and definitions, 21– 26
antenna

connection considerations, 12
custom, design, 13
diversity antenna, disabling, 13
limit, matching coaxial connections, 12
location, considerations, 13
matching, considerations, 13
maximum cable loss, 12
routing, 13

approvals, regulatory and industry, 17

B

bands supported, RF

CDMA, 12
GSM, 11, 12
LTE, 11
WCDMA, 11

C

cable loss

antenna, maximum, 12

CDMA

frequency band support, 12

connection

grounding, 14

connectors, required

host-module, 7

D

frequency band support

CDMA, 12
GSM, 11, 12
LTE, 11
WCDMA, 11

G

gain

maximum, 18

grounding

connection considerations, 14

GSM

frequency band support, 11, 12

I

impedance

module–antenna, 13
industry approvals, 17
interference

device generated, 15

host-generated, 14

wireless devices, 14

L

LTE

frequency band support, 11

N

noise

leakage, minimizing, 14

desense. See RF
diversity antenna

disabling, 13

E

EDGE

connector, required, 7

F

filtering, RF desense, 15

Rev 1 Dec.12 Proprietary and Confidential - Contents subject to change 27

P

PCB

multi-layer, shielding for RF desense, 15

R

radiated sensitivity measurement, 16
radiated spurious emissions, 15
regulatory approvals, 17
regulatory information, 17– 20

FCC, 18

limitation of liability, 17

safety and hazards, 17

Hardware Integration Guide

RF

antenna cable loss, maximum, 12
antenna connection, considerations, 12
connectors, required, 7
desense

device-generated, 14
harmonic energy, filtering, 15
mitigation suggestions, 15
shielding suggestions, 15

interference

other devices, 15
wireless devices, 14

RF bands supported

CDMA, 12
GSM, 11, 12
LTE, 11

WCDMA, 11
RF specifications, 11– 16
RSE, 15

S

sensitivity

radiated measurement, overview, 16

shielding

module, compliance, 12
reducing RF desense, 15

SIM

connector, required, 7

specifications

RF, 11– 16

W

WCDMA

frequency band support, 11

Z

ZIF (Zero Intermediate Frequency), 14

28 Proprietary and Confidential - Contents subject to change 4112880