Quectel L20 User manual

L20

Quectel GPS Engine

EVB User Guide

L20_EVB_User_Guide_V1.0

[email protected]

L20 EVB User Guide

L20_EVB_User_Guide_V1.0 - 1 -

Document Title

L20 EVB User Guide

Version

1.0

Date

2010-12-20

Status

Release

Document Control ID

L20_EVB_User_Guide_V1.0

General Notes

Quectel offers this information as a service to its customers, to support application and

engineering efforts that use the products designed by Quectel. The information provided is

based upon requirements specifically provided to Quectel by the customers. Quectel has not

undertaken any independent search for additional relevant information, including any

information that may be in the customer’s possession. Furthermore, system validation of this

product designed by Quectel within a larger electronic system remains the responsibility of

the customer or the customer’s system integrator. All specifications supplied herein are

subject to change.

Copyright

This document contains proprietary technical information which is the property of Quectel

Limited. The copying of this document, distribution to others, and communication of the

contents thereof, are forbidden without express authority. Offenders are liable to the payment

of damages. All rights are reserved in the event of a patent grant or registration of a utility

model or design. All specification supplied herein are subject to change without notice at any

time.

Quectel

a service to its customers, to support application and

Quectel

a service to its customers, to support application and

engineering efforts that use the products designed by

Quectel

engineering efforts that use the products designed by

Quectel

. The information provided is

Quectel

. The information provided is

based upon requirements specifically provided to

Quectel

based upon requirements specifically provided to

Quectel

by the customers.

Quectel

by the customers.

pendent search for additional relevant information, including any

Quectel

pendent search for additional relevant information, including any

information that may be in the customer’s possession. Furthermore, system validation of this

Quectel

information that may be in the customer’s possession. Furthermore, system validation of this

within a larger electronic system remains the responsibility of

Quectel

within a larger electronic system remains the responsibility of

ustomer or the customer’s system integrator. All specifications supplied herein are

Quectel

ustomer or the customer’s system integrator. All specifications supplied herein are

Copyright

Quectel

Copyright

This document contains proprietary technical information which is the property of Quectel

Quectel

This document contains proprietary technical information which is the property of Quectel

Limited. The copying of this document, distribution

Quectel

Limited. The copying of this document, distribution

Quectel

contents thereof, are forbidden without express authority. Offenders are liable to the payment

Quectel

contents thereof, are forbidden without express authority. Offenders are liable to the payment

of damages. All rights are reserved in the event of a patent grant or registration of a utility

Quectel

of damages. All rights are reserved in the event of a patent grant or registration of a utility

Confidential

pendent search for additional relevant information, including any

Confidential

pendent search for additional relevant information, including any

information that may be in the customer’s possession. Furthermore, system validation of this

Confidential

information that may be in the customer’s possession. Furthermore, system validation of this

within a larger electronic system remains the responsibility of

Confidential

within a larger electronic system remains the responsibility of

ustomer or the customer’s system integrator. All specifications supplied herein are

Confidential

ustomer or the customer’s system integrator. All specifications supplied herein are

This document contains proprietary technical information which is the property of Quectel

Confidential

This document contains proprietary technical information which is the property of Quectel

Limited. The copying of this document, distribution

Confidential

Limited. The copying of this document, distribution

Confidential

to others, and communication of the

Confidential

to others, and communication of the

contents thereof, are forbidden without express authority. Offenders are liable to the payment

Confidential

contents thereof, are forbidden without express authority. Offenders are liable to the payment

of damages. All rights are reserved in the event of a patent grant or registration of a utility

Confidential

of damages. All rights are reserved in the event of a patent grant or registration of a utility

model or design. All specific

Confidential

model or design. All specific

ation supplied herein are subject to change without notice at any

Confidential

ation supplied herein are subject to change without notice at any

Confidential

Shanghai

Confidential

Shanghai

Quectel

Confidential

Quectel

Wireless Solutions

Confidential

Wireless Solutions

L20 EVB User Guide

L20_EVB_User_Guide_V1.0 - 2 -

Contents

0. Revision History ........................................................................................................................... 5

1. Introduction ................................................................................................................................... 6

1.1. Reference ............................................................................................................................. 6

1.2. Abbreviations ...................................................................................................................... 6

2. EVB Kit Introduction .................................................................................................................... 7

2.1. EVB Top and Bottom View ................................................................................................. 7

2.2. EVB Accessories ................................................................................................................. 9

3. Interface Application ................................................................................................................... 10

3.1. Power Interface ................................................................................................................. 10

3.2. UART Interface ................................................................................................................. 11

3.3. Antenna Interface .............................................................................................................. 12

3.4. Switches ............................................................................................................................ 12

3.5. Operating Status LEDs ...................................................................................................... 13

3.6. Test Points ......................................................................................................................... 14

4. EVB and Accessories .................................................................................................................. 15

5. Starting SiRFLive ....................................................................................................................... 16

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14

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L20 EVB User Guide

L20_EVB_User_Guide_V1.0 - 3 -

Table Index

TABLE 1: REFERENCE .......................................................................................................................... 6

TABLE 2: ABBREVIATIONS ................................................................................................................. 6

TABLE 3: PINS OF UART PORT ......................................................................................................... 11

TABLE 4: SWITCHES AND BUTTONS .............................................................................................. 13

TABLE 5: OPERATING STATUS LEDS .............................................................................................. 13

TABLE 6: PINS OF J102 & J104........................................................................................................... 14

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L20 EVB User Guide

L20_EVB_User_Guide_V1.0 - 4 -

Figure Index

FIGURE 1: EVB TOP VIEW ................................................................................................................... 7

FIGURE 2: EVB BOTTOM VIEW ......................................................................................................... 8

FIGURE 3: EVB ACCESSORIES ........................................................................................................... 9

FIGURE 4: POWER INTERFACE ........................................................................................................ 10

FIGURE 5: UART INTERFACE ........................................................................................................... 11

FIGURE 6: ANTENNA INTERFACE ................................................................................................... 12

FIGURE 7: SWITCHES ......................................................................................................................... 12

FIGURE 8: OPERATING STATUS LEDS ............................................................................................ 13

FIGURE 9: TEST POINTS J102 & J104 ............................................................................................... 14

FIGURE 10: EVB AND ACCESSORY EQUIPMENTS ....................................................................... 15

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L20 EVB User Guide

L20_EVB_User_Guide_V1.0 - 5 -

0. Revision History

Revision

Date

Author

Description of change

1.0 2010-12-20 Roy Chen Initial

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L20 EVB User Guide

L20_EVB_User_Guide_V1.0 - 6 -

1. Introduction

This document defines and specifies the usage of L20 EVB (Evaluation Board). Customer can get

useful information about L20 EVB and GPS demo tool from this document.

1.1. Reference

Table 1: Reference

SN Document name Remark

[1] L20_HD Hardware Design

1.2. Abbreviations

Table 2: Abbreviations

Abbreviation Description

C/NO Carrier/Noise

GPS

Global Positioning System

HDOP Horizontal Dilution of Precision

SV Satellite Vehicle

UART Universal Asynchronous Receiver & Transmitter

USB Universal Serial Bus

UTC Universal Time Coordinated

Quectel

Description

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Description

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Carrier/

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Carrier/

No

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No

Carrier/NoCarrier/

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Carrier/NoCarrier/

ise

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ise

Quectel

Gl

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Gl

o

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o

bal

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bal

Position

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Position

i

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i

ng

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ng

System

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System

Quectel

Horizontal Dilution of Precision

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Horizontal Dilution of Precision

Quectel

Satellite

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Satellite

Vehicle

Quectel

Vehicle

Quectel

Universal Asynchronous Receiver &

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Universal Asynchronous Receiver &

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Horizontal Dilution of Precision

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Horizontal Dilution of Precision

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Universal Asynchronous Receiver &

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Universal Asynchronous Receiver &

Transmitter

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Transmitter

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Universal Serial Bus

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Universal Serial Bus

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Universal Time Coordinated

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Universal Time Coordinated

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L20 EVB User Guide

L20_EVB_User_Guide_V1.0 - 7 -

2. EVB Kit Introduction

2.1. EVB Top and Bottom View

Figure 1: EVB top view

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Figure

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Figure

1

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1

:

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:

EVB

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EVB

t

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t

op

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op

v

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v

iew

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iew

L20 EVB User Guide

L20_EVB_User_Guide_V1.0 - 8 -

Figure 2: EVB bottom view

A: GPS UART port

B: Antenna interface

C: Adapter interface

D: Test points

E: L20 Module

F: POWER switch

G: NC switch (Reserve for future development)

H: NC botton (Reserve for future development)

I: Indication LEDs

J: MCU UART port (no use)

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Figure

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Figure

2

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2

:

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:

E

Quectel

E

VB

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VB

b

Quectel

b

ottom

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ottom

v

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v

iew

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iew

B: Antenna interface

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B: Antenna interface

C: Adapter interface

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C: Adapter interface

D: Test point

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D: Test point

s

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s

Module

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Module

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POWER

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POWER

switch

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switch

NC switch (Reserve for future development)

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NC switch (Reserve for future development)

NC botton (Reserve for future development)

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NC botton (Reserve for future development)

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NC switch (Reserve for future development)

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NC switch (Reserve for future development)

NC botton (Reserve for future development)

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NC botton (Reserve for future development)

ion LEDs

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ion LEDs

MCU UART port (no use)

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MCU UART port (no use)

L20 EVB User Guide

L20_EVB_User_Guide_V1.0 - 9 -

2.2. EVB Accessories

Figure 3: EVB accessories

A: GPS active antenna (3.3V)

B: Serial port cable (USB 2.0)

C: DC5V/2A power adapter

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Figure

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Figure

active

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active

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antenna

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antenna

(3.3V)

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(3.3V)

cable

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cable

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: EVB

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: EVB

a

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a

ccessor

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ccessor

ies

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ies

(USB 2.0)

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(USB 2.0)

/2A power

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/2A power

adapter

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adapter

L20 EVB User Guide

L20_EVB_User_Guide_V1.0 - 10 -

3. Interface Application

3.1. Power Interface

Figure 4: Power interface

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Figure

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Figure

4

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4

:

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:

Power

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Power

i

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i

nterface

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nterface

L20 EVB User Guide

L20_EVB_User_Guide_V1.0 - 11 -

3.2. UART Interface

Figure 5: UART interface

Table 3: Pins of UART port

Signal

I/O

Description

2 TXD(RS232) O Transmit data

3

RXD(RS232)

I

Receive data

5 GND GND

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Figure

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Figure

5

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5

:

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:

UART

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UART

3

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3

: Pins of UART port

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: Pins of UART port

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Signal

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Signal

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nterface

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nterface

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I/O

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I/O

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Description

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Description

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(RS232)

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(RS232)

O

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O

Transmit data

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Transmit data

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RXD

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RXD

(RS232)

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(RS232)

I

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I

Receive data

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Receive data

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GND

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GND

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L20 EVB User Guide

L20_EVB_User_Guide_V1.0 - 12 -

3.3. Antenna Interface

Figure 6: Antenna interface

3.4. Switches

Figure 7: Switches

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Figure

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Figure

Switche

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Switche

s

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s

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: Antenna

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: Antenna

i

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i

nterface

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nterface

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L20 EVB User Guide

L20_EVB_User_Guide_V1.0 - 13 -

Table 4: Switches and buttons

Part Name I/O Description

S1

POWER

I

Control power supply from adapter

3.5. Operating Status LEDs

Figure 8: Operating status LEDs

Table 5: Operating status LEDs

Part Name I/O

Description

L1 GPS_TXD_DATA O

Flash: GPS Data export from TXD

Extinct: no data

L2 1PPS O TBD

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Figure

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Figure

8

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8

:

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:

Operating

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Operating

Table

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Table

5

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5

:

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:

Operati

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Operati

ng

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ng

s

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s

tatus LED

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tatus LED

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art

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art

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Name

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Name

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L20_EVB_User_Guide_V1.0 - 14 -

3.6. Test Points

Figure 9: Test points J102 & J104

Table 6: Pins of J102 & J104

Pin Signal I/O Description

7

TXD1

O

Transmit GPS data

8 RXD1 I Receive GPS data

VCC

I

Supply voltage to module

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Figure

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Figure

9

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9

: Test

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: Test

: Pins of

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: Pins of

J102

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J102

& J104

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& J104

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oints

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oints

J

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J

102

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102

& J104

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& J104

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Sign

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Sign

al

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al

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I/O

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I/O

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TXD1

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TXD1

O

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O

Transmit

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Transmit

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RXD1

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RXD1

I

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I

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VCC

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VCC

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L20 EVB User Guide

L20_EVB_User_Guide_V1.0 - 15 -

4. EVB and Accessories

The EVB and its accessories are equipped as shown in Figure 10.

Figure 10: EVB and accessory equipments

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Figure

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Figure

10

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10

:

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:

EVB and

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EVB and

L20 EVB User Guide

L20_EVB_User_Guide_V1.0 - 16 -

5. Starting SiRFLive

The SiRFLive tool can help user to view the status of GPS receiver and record NMEA data. The

steps of using SiRFLive for L20 are described as below:

1. After finishing assembling the EVB as figure 10, connect the RS232 to USB cable to PC, and

power on the module, the LED GPS_TXD_DATA will be flash. The operation window of

SiRFLive is shown below:

2. Click the button

to select COM port and baud rate 4800 in pop-up window:

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button

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button

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to select COM port and baud rate

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to select COM port and baud rate

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L20 EVB User Guide

L20_EVB_User_Guide_V1.0 - 17 -

3. The operation window will show NMEA data, Signal view, Radar view, Location map and

Position information including UTC, latitude, longitude, altitude, HDOP, speed and so on.

4. Click button , the reset window will pop up as below:

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, the reset window will

Quectel

, the reset window will

pop up as below:

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pop up as below:

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L20 EVB User Guide

L20_EVB_User_Guide_V1.0 - 18 -

5. Select reset mode and click “Send” to implement Cold Start, Warm Start or Hot Start.

Save NMEA data with below toolbar:

6. Record log and Stop log with below menu:

Quectel

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Shanghai Quectel Wireless Solutions Co., Ltd.

Room 501, Building 9, No.99, Tianzhou Road, Shanghai, China 200233

Tel: +86 21 5108 2965

Mail: info@quectel.com

[email protected]

Quectel L20 User manual

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