Motorola C18 Developer's Manual

Developer's Guide

Motorola c18

Cellular Engine

Module Description

98-08901C63-A

ii 98-08901C63-A

REVISION HISTORY

Revision Date Purpose

O June 2003 Initial Release

A November 2003 Changes to some features

November 2003

c18 Cellular Engine

Module Description

CONTENTS

REVISION HISTORY ................................................................................................................................................................ii

PREFACE

1.1 SCOPE OF THIS MANUAL .................................................................................................................................................1

1.2 WHO SHOULD USE THIS MANUAL.................................................................................................................................1

1.3 DISCLAIMER ........................................................................................................................................................................1

1.4 APPLICABLE DOCUMENTS AND STANDARDS............................................................................................................1

1.4.1 Documents...................................................................................................................................................................1

1.4.2 Standards .....................................................................................................................................................................1

1.5 TRADEMARKS.....................................................................................................................................................................2

1.6 HOW THIS MANUAL IS ORGANIZED..............................................................................................................................2

INTRODUCTION

2.1 GENERAL DESCRIPTION...................................................................................................................................................3

2.2 TERMS AND ABBREVIATIONS ........................................................................................................................................3

2.3 PRODUCT SPECIFICATIONS .............................................................................................................................................5

2.4 MODELS DESCRIPTION .....................................................................................................................................................8

2.4.1 Basic Model Overview................................................................................................................................................8

2.5 REGULATORY APPROVALS .............................................................................................................................................9

2.5.1 Compliance and Regulations.......................................................................................................................................9

2.5.2 Regulatory Requirements..........................................................................................................................................10

2.5.3 Regulatory Statement ................................................................................................................................................10

2.6 SAFETY PRECAUTIONS...................................................................................................................................................11

2.6.1 User Operation ..........................................................................................................................................................11

2.6.2 Antenna Installation ..................................................................................................................................................11

HARDWARE DESCRIPTION

3.1 C18 BLOCK DIAGRAM DESCRIPTION AND OPERATION OVERVIEW ..................................................................13

3.1.1 c18 Block Diagram....................................................................................................................................................13

3.1.2 RF Block ...................................................................................................................................................................14

3.2 POWER SUPPLY AND CURRENT CONSUMPTION .....................................................................................................16

3.2.1 Current Consumption ................................................................................................................................................17

iv 98-08901C63-A

3.3 C18 OPERATING MODES................................................................................................................................................. 17

3.4 TURNING THE UNIT ON/OFF ......................................................................................................................................... 18

3.4.1 On/Off Circuitry ....................................................................................................................................................... 18

3.4.2 Turning the Unit On/Off Using the AUDIO_OUT_ONOFF Pin............................................................................. 18

3.4.3 Turning the Unit On Using the Ignition Pin ............................................................................................................. 20

3.5 SLEEP MODE OPTIONS ................................................................................................................................................... 20

3.5.1 c18 Awakens the DTE from Sleep Mode................................................................................................................. 20

3.5.2 c18 Exiting from Sleep Mode................................................................................................................................... 21

3.6 INTERFACES...................................................................................................................................................................... 21

3.6.1 Interface Connectors................................................................................................................................................. 22

3.6.2 UART1 ..................................................................................................................................................................... 24

3.6.3 UART2 ..................................................................................................................................................................... 25

3.6.4 USB .......................................................................................................................................................................... 26

3.6.5 Removable-User Identity Module (R-UIM) Interface.............................................................................................. 26

3.7 AUDIO INTERFACES........................................................................................................................................................ 28

3.7.1 Handset Interface...................................................................................................................................................... 29

3.7.2 Headset Interface ...................................................................................................................................................... 30

3.7.3 Hands-free Audio (Auxiliary Audio) Interface ........................................................................................................ 30

3.7.4 Analog Ground ......................................................................................................................................................... 31

3.7.5 Digital Audio Interface............................................................................................................................................. 32

3.8 ANTENNA........................................................................................................................................................................... 32

3.8.1 RF Connectors .......................................................................................................................................................... 32

3.9 DISPLAY INTERFACE ...................................................................................................................................................... 34

3.9.1 Serial LCD................................................................................................................................................................ 34

3.9.2 Backlights ................................................................................................................................................................. 34

3.9.3 LCD_EL_EN ............................................................................................................................................................ 36

3.9.4 Keypad...................................................................................................................................................................... 36

3.9.5 General-purpose A/D Converter - GPADC.............................................................................................................. 36

3.9.6 GPIO......................................................................................................................................................................... 37

3.9.7 Vibrator..................................................................................................................................................................... 37

CONNECTOR PIN ASSIGNMENTS

4.1 70-PIN CONNECTOR PINOUT ......................................................................................................................................... 39

4.2 36-PIN ZIF INTERFACE CONNECTOR........................................................................................................................... 43

4.3 28-PIN DIN INTERFACE CONNECTOR.......................................................................................................................... 45

MECHANICAL DESCRIPTION

5.1 MECHANICAL REQUIREMENTS ................................................................................................................................... 47

5.2 ASSEMBLY PRECAUTIONS............................................................................................................................................ 50

SERVICE SUPPORT

6.1 CUSTOMER ASSISTANCE............................................................................................................................................... 51

SUGGESTED CONNECTORS

A.1 SUGGESTED MATING CONNECTORS ......................................................................................................................... 53

98-08901C63-A v

PINOUT COMPARISONS

B.1 OVERVIEW........................................................................................................................................................................ 55

B.2 C18/G18 28-PIN CONNECTOR COMPARISON ............................................................................................................. 55

B.3 C18/G18 36-PIN CONNECTOR COMPARISON ............................................................................................................. 57

B.4 C18/G20 70-PIN CONNECTOR COMPARISON ............................................................................................................. 59

B.5 C18, G18 AND G20 PINOUT LOCATIONS..................................................................................................................... 62

HARDWARE REQUIREMENTS FOR CDG2 AND FIELD TESTING

C.1 OVERVIEW........................................................................................................................................................................ 65

C.2 C18 MODELS WITH 36-PIN OR 70-PIN INTERFACE CONNECTORS.......................................................................65

C.3 C18 MODELS WITH A 28-PIN INTERFACE CONNECTOR......................................................................................... 66

INDEX

vi 98-08901C63-A

LIST OF FIGURES

Figure 1. c18a1 Full OEM Configuration – Top View ................................................................................................................ 8

Figure 2. c18a1 Full OEM Configuration – Bottom View .......................................................................................................... 9

Figure 3. c18 Block Diagram ..................................................................................................................................................... 13

Figure 4. RF Block Diagram ...................................................................................................................................................... 14

Figure 5. Baseband Block Diagram ........................................................................................................................................... 15

Figure 6. Powering On the c18 Power Using the AUDIO_OUT_ONOFF Pin ......................................................................... 19

Figure 7. Powering Off the c18 Using the AUDIO_OUT_ONOFF Pin.................................................................................... 19

Figure 8. Waking Up the DTE when the c18 Should Send Data ............................................................................................... 21

Figure 9. c18 Pinout – Top View ............................................................................................................................................... 21

Figure 10. c18 Pinout – Bottom View........................................................................................................................................ 22

Figure 11. UART1 Interface ...................................................................................................................................................... 24

Figure 12. UART2 Interface ...................................................................................................................................................... 26

Figure 13. Audio Interfaces........................................................................................................................................................ 28

Figure 14. Handset Audio Interface ........................................................................................................................................... 29

Figure 15. Headset Interface ...................................................................................................................................................... 30

Figure 16. Hands-free Audio Connectivity ................................................................................................................................ 31

Figure 17. GND to AGND Connectivity ................................................................................................................................... 31

Figure 18. Antenna Connectors.................................................................................................................................................. 33

Figure 19. KEYB_DRV Output Connectivity ........................................................................................................................... 35

Figure 20. BL_SINK Output Connectivity ................................................................................................................................ 35

Figure 21. c18a1 Top View........................................................................................................................................................ 47

Figure 22. c18a1 Bottom View .................................................................................................................................................. 48

Figure 23. c18a1 Side View ....................................................................................................................................................... 48

Figure 24. c18c Top View.......................................................................................................................................................... 49

Figure 25. c18c Bottom View .................................................................................................................................................... 49

Figure 26. c18c Side View ......................................................................................................................................................... 50

Figure 27. Top Label.................................................................................................................................................................. 51

Figure 28. Bottom Label ............................................................................................................................................................ 51

Figure 29. c18 Connector Pin Location – Top View ................................................................................................................. 62

Figure 30. c18 Connector Pin Location – Bottom View............................................................................................................ 63

Figure 31. g18 Connector Pin Locations – Top View................................................................................................................ 63

Figure 32. g20 Connector Pin Locations – Bottom View .......................................................................................................... 64

Figure 33. Location of the R6203 Resistor on the c18............................................................................................................... 66

Figure 34. Suggested Configuration for CDG2 Testing ............................................................................................................ 67

Figure 35. Solder Location for Chip Resistors........................................................................................................................... 68

Figure 36. Location of Access Points on the c18....................................................................................................................... 69

98-08901C63-A vii

LIST OF TABLES

Table 1. Terms and Abbreviations .............................................................................................................................................. 3

Table 2. Product Specifications ................................................................................................................................................... 5

Table 3. c18 Models ..................................................................................................................................................................... 8

Table 4. Product Compliance ...................................................................................................................................................... 9

Table 5. Regulations Compliance ............................................................................................................................................. 10

Table 6. Current Consumption................................................................................................................................................... 17

Table 7. c18 Modes of Operation............................................................................................................................................... 17

Table 8. c18 Interface Connectors ............................................................................................................................................. 22

Table 9. UART1 Signal Definitions .......................................................................................................................................... 24

Table 10. Internal R-UIM Pinout (J101).................................................................................................................................... 27

Table 11. External R-UIM Pinout.............................................................................................................................................. 27

Table 12. Digital Audio Interface Signals.................................................................................................................................. 32

Table 13. LCD Pins.................................................................................................................................................................... 34

Table 14. GPADC Specifications............................................................................................................................................... 36

Table 15. GPIO Pin Description ................................................................................................................................................ 37

Table 16. 70-pin Connector Pinout ........................................................................................................................................... 39

Table 17. 36-pin ZIF Connector Pinout .................................................................................................................................... 43

Table 18. 28-pin DIN Connector Pinout ................................................................................................................................... 45

Table 19. c18 Suggested Mating Connectors............................................................................................................................. 53

Table 20. c18/g18 28-pin Connector Comparison .................................................................................................................... 55

Table 21. c18/g18 36-pin Connector Comparison .................................................................................................................... 57

Table 22. c18/g20 70-pin Connector Comparison .................................................................................................................... 59

viii 98-08901C63-A

98-08901C63-A 1

1. PREFACE

1.1 SCOPE OF THIS MANUAL

This manual introduces the c18 embedded module and describes the technical details required by the data terminal equipment

(DTE) team to successfully integrate the Motorola c18 cellular engine into a wireless host device.

We at Motorola want to make this guide as helpful as possible. Keep us informed of your comments and suggestions for

improvements.

You can reach us by email at: n2cshd@motorola.com.

1.2 WHO SHOULD USE THIS MANUAL

This manual is intended for all members of the DTE integration team who are responsible for integrating the c18 module into

the host device, including representatives from hardware, software and RF engineering disciplines.

1.3 DISCLAIMER

This guide provides advice and guidelines for integration teams. Responsibility for use of the information contained herein lies

entirely with the integrator. Statements indicating support provided by or offered by Motorola are subject to change at any time.

Motorola reserves the right to make any changes to this specification.

1.4 APPLICABLE DOCUMENTS AND STANDARDS

1.4.1 Documents

• c18 Developer’s Kit – 9808901C64-A

• c18 AT Commands – 9808901C65-O

1.4.2 Standards

• IS95B Phase I, Phase II

• CDMA 2000 R.0

• IS98D Phase I, Phase II

• CDG-27: 13Kbps variable rate vocoder specification

• TSB-74: Physical layer for 13K Vocoder

• IS637A: Short Message Service (SMS)

Preface

2 98-08901C63-A

• IS683A: Over-the-Air Activation

• IS801: Position Determination Service

• IS707A: AT Commands.

1.5 TRADEMARKS

MOTOROLA and the Stylized M Logo are registered in the U.S. Patent and Trademark Office. All other product or service

names are the property of their respective owners.

1.6 HOW THIS MANUAL IS ORGANIZED

This manual contains the following chapters:

• Chapter 1 contains this Preface.

• Chapter 2 introduces the c18 unit and provides important safety instructions.

• Chapter 3 provides a detailed hardware description of the blocks and components comprising the c18.

• Chapter 4 describes the pin assignments for c18 connectors.

• Chapter 5 describes the mechanical requirements for the c18 unit.

• Chapter 6 provides contact information for Motorola Service Support and Customer Assistance.

• Appendix A lists suggested c18 mating connectors.

• Appendix B provides a pinout comparison for c18, g18 and g20 modules.

• Appendix C describes hardware requirements for CDG2 and field testing.

98-08901C63-A 3

2. INTRODUCTION

2.1 GENERAL DESCRIPTION

The Motorola c18 is an embedded module that supports both AMPS and CDMA 1X technology, and is designed for integration

in other devices. The c18 provides advanced data features as well as outstanding voice capabilities.

The c18 modem supports the following modes of operation:

• CDMA 1X embedded module package with voice, data, fax and short message service (SMS) support

• CDMA 1X packet data communication in 800/1900 MHz bands

• AMPS mode in 800 MHz band

• aGPS on networks with E911 support

The c18 is designed to support a range of subsidiary services associated with navigation, emergency services, road tolls, security

systems (such as car alarms and fire alarms), as well as integrated standard voice/data communication.

Applications where data modules can provide these benefits include automotive telematics, mobile computing, asset

management, remote utility meter reading, street light control, home security, vending and copy machine management, fleet

management, ATM security, POS connectivity, household appliance monitoring and control, display systems, load

management, and more. To support this flexibility, the same functionality is offered in several different configurations. aGPS

capability is also provided in an additional configuration.

The c18 modem relies on system software for basic operational instructions and on configuration parameter values to meet

modem and network interface requirements.

The c18 is designed for use in a system environment comprising a CDMA/Amps mobile radio network with one or more radio

operators per country.

2.2 TERMS AND ABBREVIATIONS

This section provides definitions for terms and acronyms used in this document.

Table 1. Terms and Abbreviations

Acronym/Term Definition/Description

1X Platform 1X

ACK Acknowledgement from the radio that the test command was successful

ADB Application Development Board (former name for the Developer Board)

ADC Analog-to-digital converter

AGND Audio ground; analog audio ground

aGPS Assisted Global Positioning System (GPS)

BOM Bill of materials

c18a Full c18 OEM model

c18c c18 CDMA800-only model

CDMA Code Division Multiple Access

Introduction

4 98-08901C63-A

CSD Circuit Switch Data

DCE Data Communication Equipment (such as modems)

DTE Data Terminal Equipment (such as terminals, PCs and so on)

ESD Electrostatic discharge

ESN Electronic serial number

EVRC Enhanced Variable Rate CODEC

GHz Gigahertz

GND Electrical ground

GPIO General Purpose Input Output

KHz Kilohertz

LPF Low-pass filter

mA Milliampere

MHz Megahertz

MSN Motorola Serial Number

N/A Not applicable

NC Not connected

PA Power amplifier

PCS Personal Communications System

PCS PCS band; also known as CDMA 1900

PD Pull-down resistor

PU Pull-up resistor

RF Radio frequency

RMS Root mean square

R-UIM Removable User Identity Module

SCI Slot Cycle Index

SW Software

TBD To be determined

TBR Timer Base Registration

ZIF Zero Insertion Force

Table 1. Terms and Abbreviations (Continued)

Acronym/Term Definition/Description

98-08901C63-A 5

Introduction

2.3 PRODUCT SPECIFICATIONS

Table 2. Product Specifications

Product Features

Operating systems: • CDMA 1X 800/1900 MHz

• AMPS 800 MHz

•aGPS

Data Features

CDMA1X high-speed data: Max BR 153.6 Kbps

CSD: Max BR 14.4 Kbps

CDMA data: • IS707: Max BR 14.4 Kbps

• IS95B: Max BR 64 Kbps

SMS: MT/MO Text mode

Fax: Class 2 Group 3

Voice Features

Analog audio

Differential analog audio lines

Vocoder 8K EVRC

DTMF support

Audio control: echo cancellation, noise suppression, side tone and gain control

Physical Characteristics

Dimensions (L x W x H): • Full OEM: 80.2 x 40.0 x 8.7 mm

• Without PCS band support: 80.2 x 40.0 x 7.6 mm

Mounting: Four 2.3 mm

Ø holes

Weight: 25 grams

Environmental

Operational temperature: -20°C to +60°C

Functional temperature: -25°C to +70°C

Storage temperature: -40°C to +85°C

Thermal shock: -40°C to +80°C (24 hours total)

ESD: Antenna protection for 20 KV

Flammability UL 94V0

Shock: • MIL-STD-810E Method 516.4 Proc. I; 18 shocks 40 G; half-sine

6 - 9 msec

• 2500 Gs; 0.00075 second pulse

Vibration: Random: NAVMAT P9492, 8 Grms MIL-STD-810E Method 514.4,

Category I

Introduction

6 98-08901C63-A

Performance

Operating voltage: 3.6 to 4.5 V DC

Current consumption: CDMA:

• Talk (TX/RX): 740 mA Max

• Receive: 110 mA Max

• Standby (IS-95): < 5 mA for SCI2; TBR = 30 minutes

• Standby (CDMA 1X): < 3.7 mA for SCI2; TBR = 30 minutes

AMPS:

• Talk (TX/RX): 940 mA Max

• Standby Mode: 55 mA Max

OFF Current: < 5

µA

Legend:

• SCI: Slotted Cycle Index

• SCI2: Paging slots every 5.12 seconds

• TBR: Timer Base Registration

TX output power: • Digital: +24 dBm @ RF port

• Analog: +27.5 dBm @ RF port

RX sensitivity: • Digital: < -104 dBm for 0.5% BER

• Analog: < -116 dBm for 12 dB SINAD

Origination rate*: Within 2% of benchmark unit

Termination rate*: Within 2% of benchmark unit

Dropped call rate*: Within 2% of benchmark unit

System acquisition time*: Best in Class for given network and route

Mechanical

External display characteristics: • Serial display supported for Developer’s Kit only

• 96 x 64 pixels

• EL backlighting

• Monochrome display

External keypad support

SAR rating: c18 has a SAR mobile exclusion statement

Interfaces

Connectors: • 70-pin, 0.5mm pitch (same as for g20)

• 36-pin ZIF (same as for g18)

• 28-pin DIN (same as for g18)

• One RF MMCX jack (female) 50 Ohm supporting aGPS, 800, 1900

bands

• One RF MMCX jack (female) 50 Ohm for aGPS active antenna

(optional)

Serial: • RS232

•USB

R-UIM: Internal and external R-UIM hardware support

Table 2. Product Specifications (Continued)

98-08901C63-A 7

Introduction

* Specifies goals and not minimum values.

Data Support

Circuit-switch data/fax call: Up to 14.4 Kbps, assuming ONC support

IS2000 revision 0 high-speed data: • Simultaneous forward and reverse rate of 153.6 Kbps

• Maximum forward rate of 153.6 Kbps (with a reverse rate of

9.6 Kbps)

• Maximum reverse rate of 153.6 Kbps (with a forward rate of

38.4 Kbps)

• Asynchronous

IS707A CDMA data: 14.4 Kbps Asynchronous Data and Group 3 Fax

RS232/USB: Dynamic communication configuration

CDMA data: • IS707A: 14.4 Kbps

• IS95B: 64 Kbps

SMS: MO and MT

Supplementary Service

Call diverting

Call forwarding

Call hold, waiting and multiparty

Missed-call indicator

Call barring (depends on service provider)

Emergency and Location

FCC E911 Location Mandate using aGPS/AFLT

Control/Status Indications

Wakeup in

Wakeup out

Other Features

TTY connectivity

Phone and date book

Over-the-air activation

AT Command Set

IS 707A AT commands

Motorola proprietary AT commands

Accessories

Firmware data loader

Data logger

Developer’s Kit

Note

Specifications are subject to change without prior notice.

Table 2. Product Specifications (Continued)

Introduction

8 98-08901C63-A

2.4 MODELS DESCRIPTION

Motorola offers the c18 in several models. The full functionality and variety of user interfaces for the c18a1 model is described

in this section. Other models are derivatives of the c18a1 full-functionality model for bands or connectors that are not applicable.

The c18c model described in Table 3 is an example of an optional model that can be derived from the generic c18a model.

2.4.1 Basic Model Overview

This section provides an overview of the various c18 integrated wireless modem models, along with their physical and electrical

characteristics, their features and functional capabilities, and details about the data-exchange network over which they

communicate. It also provides sample configurations.

2.4.1.1 c18a1 Full OEM Configuration

Figure 1 shows the configuration for the packaged module, which measures 40 mm x 80.2 mm x 8.7 mm.

Figure 1. c18a1 Full OEM Configuration – Top View

Table 3. c18 Models

Model Operating Bands Interface Connectors aGPS Option

c18a • CDMA 800/1900 MHz

• AMPS 800 MHz

• GPS 1575 MHz

• 70-pin, 0.5mm pitch, board-to-board

• 36-pin ZIF connector

• 28-pin DIN board-to-board connector

• MMCX RF connector

• MMCX GPS connector

• R-UIM connector

Yes

c18c CDMA 800 MHz • 70-pin, 0.5mm pitch, board-to-board

• MMCX RF connector

No

98-08901C63-A 9

Introduction

Figure 2. c18a1 Full OEM Configuration – Bottom View

2.5 REGULATORY APPROVALS

2.5.1 Compliance and Regulations

2.5.1.1 Product Compliance

Table 4. Product Compliance

Approvals Comments

TTY compliance

FCC E911 Location Mandate

CDMA 2000 R. 0 – P REV 6 Market Required

Features

IS95B Phase I Mandatory

IS95B Phase II Mandatory

IS95B Optional Access Entry Hand-off

IS95B Optional Access Probe Hand-off

IS95B Optional High-speed Data (64K downlink)

CDG-27: 13 Kbps variable rate Vocoder

specification

TSB-74: Physical layer for 13K Vocoder

IS98D: Minimum mobile performance standard Phase I and Phase II

Introduction

10 98-08901C63-A

2.5.1.2 Regulations Compliance

2.5.2 Regulatory Requirements

The Federal Communications Commission (FCC) requires application for certification of digital devices in accordance with

Part 22 and Part 24. This includes Electromagnetic Energy Exposure (EME) testing. As the c18 modem is not a standalone trans-

ceiver but is an integrated module, the c18 cannot be tested by itself for EME certification. It is, however, the integrator’s respon-

sibility to have the completed device tested for EME certification.

2.5.3 Regulatory Statement

The following safety precautions must be observed during all phases of the operation, usage, service or repair of any cellular

terminal or mobile incorporating the c18 module. Manufacturers of the cellular terminal are advised to convey the following

safety information to users and operating personnel, and to incorporate these guidelines into all manuals supplied with the

product. Failure to comply with these precautions violates safety standards of design, manufacture and intended use of the

product. Motorola assumes no liability for customer failure to comply with these precautions.

1. The c18 must be operated at the voltages described in the technical documentation.

2. The c18 must not be mechanically nor electrically changed. Use of connectors should follow the guidance of the technical

documentation.

IS637A: Short Message Service

IS683A: Over-the-air activation

IS801: Position Determination Service (required

to support AFLT and aGPS)

Table 5. Regulations Compliance

Approvals Comments

USA FCC IHDT56CW1

Canada DOC IC: 109O-CW1

CTIA Required for North America

CDG Stage 1 and 2 Nortel, Motorola

Contact Customer Support

for an updated CDG2

manufacturers list

Operator Type Approvals:

• North America

•ROW

•VZW

•TBD

Table 4. Product Compliance (Continued)

Approvals Comments

98-08901C63-A 11

Introduction

3. Systems using the c18 are subject to mandatory EMC testing under directive 89/336/EEC. Other directives, such as the

LVD directive 73/23/EE, may also apply to a system using the c18 module.

2.6 SAFETY PRECAUTIONS

2.6.1 User Operation

Do not operate your telephone when a person is within 8 inches (20 centimeters) of the antenna. A person or object within

8 inches (20 centimeters) of the antenna could impair call quality and may cause the phone to operate at a higher power level

than necessary. In addition, it may expose that person to RF energy in excess of that established by the FCC RF Exposure

Guidelines.

2.6.2 Antenna Installation

Output power listed is conducted at antenna terminals. This OEM module transmitter operates with external vehicle-mounted

antennas. OEM installers must follow the antenna installation instructions of the antenna manufacturer, and must meet

transmitter operating conditions for satisfying RF exposure compliance. In addition, the following conditions must be met:

• The antenna installation must provide a minimum separation distance of 20 cm from users and nearby persons, and must not

be co-located or operated in conjunction with any other antenna or transmitter.

• The combined cable loss and antenna gain must not exceed +6.1 dBi. The total system output must not exceed 1.5 Watts ERP

(Cellular)/3.0 Watts EIRP (PCS) to qualify for the categorical exclusion requirements of 2.1091.

!

Caution

c18 modules are not ESD protected. ESD preventive measures must be taken when handling the modules.

Integrators should design ESD protection on all external interfaces.

!

Warning

When using the headset earpiece, verify the audio level as a safety precaution and limit the maximum voltage by

the serial resistor. See “Headset Interface” on page 30.

!

Warning

The telephone must be installed in a manner that provides a minimum separation distance of 20 cm or more

between the antenna and persons in order to satisfy FCC RF exposure requirements for mobile transmitting

devices.

To comply with the FCC RF exposure limits and satisfy the categorical exclusion requirements for mobile

transmitters, the requirements described in this manual must be met.

Introduction

12 98-08901C63-A

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Motorola C18 Developer's Manual

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