Linx Technologies SG User Manual

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WIRELESS MADE SIMPLE

Revised 07/26/11

SG Series Master Development System User’s Guide

PART # DESCRIPTION MDEV-GPS-SG SG Series Master Development System

ORDERING INFORMATION

INTRODUCTION

The Linx SG Series RF modules offer a simple, efficient, and cost-effective method of adding GPS capabilities to any product. The Master Development System is intended to give a designer all the tools necessary to correctly incorporate the SG Series into an end product. The development boards themselves serve several important functions:

• Rapid Module Evaluation - The boards allow the performance of the Linx SG Series modules to be evaluated quickly in a user’s environment.

• Design Benchmark - During the design process of your product, the boards provide a known benchmark against which the performance of your own design may be judged.

• Application Development - An on-board prototyping area is provided to allow a designer to develop applications directly on the development board. All signal lines are available on a header for easy connection to the designer’s circuits.

The Master Development System includes 1 assembled development board, 2 SG Series receivers*, one SH Series antenna, 4 AAA batteries, and full documentation.

*One part is soldered to the board, one extra is for use on your first prototype board.

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SG SERIES RECEIVER DEVELOPMENT BOARD

1. Four AAA Batteries

2. DC Power Jack

3. Power Switch

4. Voltage Regulator

5. USB Interface Module

6. Prototype Area

7. Break-Out Header

8. SG Series Receiver Daughter Board

9. CR2032 Backup Battery (on the back)

10. OLED Display

11. OLED Display Power Switch

TROUBLESHOOTING

If the board fails to work out of the box, then try the following:

• Check the batteries to make sure they are not dead.

• Check to make sure that the power switch is in the correct position.

• Make sure that the jumper is set correctly.

If all of these appear to be in order, please call 800-736-6677 or e-mail [email protected] for technical support.

Figure 1: SG Series Receiver Development Board

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INITIAL SETUP

Unpack the development system and install the AAA and coin-cell batteries. Connect the external GPS antenna. The power switch can select between the battery pack / DC power jack or USB if the board is plugged into a USB bus. To use the display, turn the OLED display power switch on. The development board is now ready for use. After turning on the power, the module will determine its current position. Please note, the time required for an initial fix or after long periods of storage will be considerably greater than in subsequent operation. Please refer to the module’s data guide for complete information regarding timeto-first-fix (TTFF). To protect the display and extend its life, turn the display off before turning the board off.

THE PROTOTYPING AREA

In addition to its evaluation functions, the board may also be used for actual product development. It features a prototyping area to facilitate the addition of application-specific circuitry. The prototyping area contains a large area of plated through-holes so that external circuitry can be placed on the board. The holes are set at 0.100” on center with a 0.040” diameter, making it easy to add most industry-standard SIP and DIP packages to the board.

External circuitry can be easily interfaced with the SG receiver through the breakout header (J7) to the right of the prototyping area. A jumper shunt has been provided to control the routing of data into the GPS module. By default the jumper is set for operation with the on-board USB module. When communicating with the GPS module using your own components this jumper shunt should be removed. At the bottom of the prototyping area is a row connected to the 3V power supply and at the top is a row connected to ground.

NOTE: The on-board 3-volt regulator has approximately 300mA of headroom available for additional circuitry. If added circuitry requires a higher current, the user must add an additional regulator to the prototype area or power the board from an external supply.

Ground Bus

+3 Volt Bus

Figure 2: The Development Board Prototyping Area

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THE GPS RECEIVER SECTION

The receiver module is mounted on a daughter board which plugs into headers on the main development board. This daughter board has an SMA antenna connector to allow the attachment of many different styles of GPS antennas.

On the bottom of the main board is a CR2032 coin cell battery that provides power to the RTC and SRAM when the receiver is powered down. This allows the receiver to start up and obtain a position fix faster. This cell will provide about two years of operation.

THE USB SECTION

The development board features a Linx QS Series USB module for interface to a PC. This allows the board to be used with the supplied development software or with custom software developed by the user.

Drivers for the USB module are included on the software CD in the kit or may be downloaded from www.linxtechnologies.com. Additional information on using the QS Series USB module can also be found on the website.

The USB connection also allows the board to be powered by the USB bus instead of batteries. This can be convenient during development to eliminate the need for frequent battery replacement.

Output data from the GPS module is connected directly to the USB module, but data into the GPS module is split. This is to prevent data collisions between the USB module and any circuitry added to the prototyping area. To route serial data from the USB module to the serial data receive line on the GPS module, use the supplied jumper to connect the TX USB and RX MODULE lines on the breakout header as shown in the adjoining diagram. Remove this jumper for use with external circuitry. The pin marked TX DISPLAY is for Linx use and should be left unconnected.

TX MODULE TX USB RX MODULE TX DISPLAY 1PPS RFPWRUP EN/ON_OFF

Figure 5: Jumper Configuration

Figure 4: The USB Section

Figure 3: The Development Board GPS Receiver Section

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THE DISPLAY SECTION

The SG Series Master Development System features an OLED screen that displays the navigation information from the GPS module. This allows the development board to act as a stand-alone evaluation system without the need for any additional software.

The display is driven by an on-board microcontroller located under the display. Data from the GPS module is connected directly to this microcontroller. The microcontroller receives data at the receiver’s default 9,600bps. If the receiver’s

baud rate is changed, it will not be able to communicate with the microcontroller.

The display and microcontroller pull about 100mA when fully powered, so a power switch is supplied to deactivate the display area when not in use, saving battery life. To protect the display and extend its life, be sure to turn the display section off before turning off the main power to the board.

MASTER DEVELOPMENT SOFTWARE

The development system is supplied with Windows-based software that communicates with the development board through the USB module. This software displays the information from the GPS module in the different NMEA formats and the satellite information, signal strength, and positions are displayed graphically. If the PC is connected to the internet, the software plots the current location on Google Maps. Full details are in the software’s User’s Guide.

Figure 6: The Development Board Display Section

Figure 7: Master Development Software

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RECEIVER SECTION

POWER SUPPLY SECTION

HEADER SECTION

USB SECTION

B2 BATHLD-001

GND

VBACKUP

1 2

4 5 6 7

9 10

HEADER 10

GND

VCC

VBACKUP

1 2

4 5 6 7

9 10

HEADER 10

GND

TXM RXM

EN/ON_OFF

1PPS

LED

RFPWRUP

USBDP USBDM GND VCC SUSP IND RX IND TX IND 485 TX

DTR

CTS

RTS

DATA OUT

DATA IN

DSR

DCD

TXUSB

TXM

1 2

4 5 6 7

SDM-USB-QS

GND

D3 D2

GNDGND

DAT -

DAT+

GND

GSHD

J2 USB-B

R2 220

R1 220

VCCU

GND

SW1

POWER SWITCH

GND

C1 220uF

GND

VCC

DIODE400

PWRJACK

GND

B1 BAT-AA-4

VCCU

GND

Vout

Vin

U1 VREG-3V

1 2

4 5 6 7

HEADER 7

TXUSB

TXM

RXM

TXDISP

EN/ON_OFF

1PPS

RFPWRUP

C9 10uF

VCC

GND

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DISPLAY SECTION

VIN

GND

MIC2288

C3 10uF

10uH

47.5k

R4 5k

2.2uF

GND

VCC13 VCC

0.1uF

1 2

4 5 6 7

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

HEADER 30

GND

VCC13

4.7uF

D7 D6 D5 D4 D3 D2 D1 D0 E/RD# R/W# BS0 BS1 CS# D/C# RES#

GPIO1 GPIO0

560k

1uF

VCC

GND

0.1uF

GND

R6 50

GND

GND VCC

VCC VCOMH VDDIO V

IREF

VDD VCI VSS

D4D3D2D1D0

E/RD#

R/W#

VCC

C8 10uF

GND

D/C#

AVSS

VSS

VDD

VSS

PMD5/RE5

PMD6/RE6

PMD7/RE7

PMA5/SCK2/CN8/RG6

PMA4/SDI2/CN9/RG7

PMA3/SDO2/CN10/RG8

MCLR

PMA2/SS2/CN11/RG9

VSS

VDD

C1IN+/AN5/CN7/RB5

C1IN-/AN4/CN6/RB4

C2IN+/AN3/CN5/RB3

C2IN-/AN2/SS1/CN4/RB2

PGC1/EMUC1/VREF-/AN1/CN3/RB1

PGD1/EMUD1/PMA6/VREF+/AN0/CN2/RB0

PGC2/EMUC2/AN6/OCFA/RB6

PGD2/EMUD2/AN7/RB7

AVDD

U2CTS/C1OUT/AN8/RB8

PMA7/C2OUT/AN9/RB9

TMS/PMA13/CVREF/AN10/RB10

TDO/PMA12/AN11/RB11

TCK/PMA11/AN12/RB12

TDI/PMA10/AN13/RB13

PMA1/U2RTS/BCLK2/AN14/RB14

PMA0/AN15/OCFB/CN12/RB15

PMA9/U2RX/SDA2/CN17/RF4

PMA8/U2TX/SCL2/CN18/RF5

U1TX/SDO1/RF3

U1RX/SDI1/RF2

U1RTS/BCLK1/SCK1/INT0/RF6

SDA1/RG3

SCL1/RG2

OSC1/CLKI/RC12

OSC2/CLKO/RC15

IC1/RTCC/INT1/RD8

IC2/U1CTS/INT2/RD9

IC3/PMCS2/INT3/RD10

IC4/PMCS1/INT4/RD11

OC1/RD0

SOSCI/CN1/RC13

SOSC0/T1CK/CN0/RC14

OC2/RD1

OC3/RD2

PMBE/OC4/RD3

PMWR/OC5/IC5/CN13/RD4

PMRD/CN14/RD5

CN15/RD6

CN16/RD7

VCAP/VDDCORE

ENVREG

RF0

RF1

PMD0/RE0

PMD1/RE1

PMD2/RE2

PMD3/RE3

PMD4/RE4

U4 PIC24F128GA006

SW2 POWER SWITCH

VCC

171819202122232425262728293031

CS#

RES#

GND

VCC

VCCVCC

VCC

VPP

PGC

PGD

TXDISP

TXM

SW3

GND

VCC

GND

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LINX TECHNOLOGIES, INC.

159 ORT LANE MERLIN, OR 97532

PHONE: (541) 471-6256 FAX: (541) 471-6251

www.linxtechnologies.com

U.S. CORPORATE HEADQUARTERS

WIRELESS MADE SIMPLE

Linx Technologies is continually striving to improve the quality and function of its products. For this reason, we reserve the right to make changes to our products without notice. The information contained in this Overview Guide is believed to be accurate as of the time of publication. Specifications are based on representative lot samples. Values may vary from lot-to-lot and are not guaranteed. "Typical" parameters can and do vary over lots and application. Linx Technologies makes no guarantee, warranty, or representation regarding the suitability of any product for use in any specific application. It is the customer's responsibility to verify the suitability of the part for the intended application. NO LINX PRODUCT IS INTENDED FOR USE IN ANY APPLICATION WHERE THE SAFETY OF LIFE OR PROPERTY IS AT RISK.

Linx Technologies DISCLAIMS ALL WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL LINX TECHNOLOGIES BE LIABLE FOR ANY OF CUSTOMER'S INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING IN ANY WAY FROM ANY DEFECTIVE OR NON-CONFORMING PRODUCTS OR FOR ANY OTHER BREACH OF CONTRACT BY LINX TECHNOLOGIES. The limitations on Linx Technologies' liability are applicable to any and all claims or theories of recovery asserted by Customer, including, without limitation, breach of contract, breach of warranty, strict liability, or negligence. Customer assumes all liability (including, without limitation, liability for injury to person or property, economic loss, or business interruption) for all claims, including claims from third parties, arising from the use of the Products. The Customer will indemnify, defend, protect, and hold harmless Linx Technologies and its officers, employees, subsidiaries, affiliates, distributors, and representatives from and against all claims, damages, actions, suits, proceedings, demands, assessments, adjustments, costs, and expenses incurred by Linx Technologies as a result of or arising from any Products sold by Linx Technologies to Customer. Under no conditions will Linx Technologies be responsible for losses arising from the use or failure of the device in any application, other than the repair, replacement, or refund limited to the original product purchase price. Devices described in this publication may contain proprietary, patented, or copyrighted techniques, components, or materials. Under no circumstances shall any user be conveyed any license or right to the use or ownership of such items.

Disclaimer

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Mouser Electronics

Authorized Distributor

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Linx Technologies: MDEV-GPS-SG