Holux GR-82 Manuale utente

GPS

Productseries With HOLUX, You never lose the way!

HOLUX Technology, Inc.

1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)

TEL: 886-3-6687000 FAX:886-3-6687111 E-mail:in[email protected] Website:www.holux.com.tw

GPS Engine Board

May. 29, 2006

Version A

Holux Technology Inc.

1F, No. 30, R&D Rd. II, Hsinchu City 300, Science-based Industrial Park, Taiwan.

Phone: +886-3-6687000 Fax: +886-3-6687111

E-Mail: [email protected] Web: www.holux.com.tw

User’s Guide

GR-82

GPS

Productseries With HOLUX, You never lose the way!

HOLUX Technology, Inc.

1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)

TEL: 886-3-6687000 FAX:886-3-6687111 E-mail:in[email protected] Website:www.holux.com.tw

TABLE OF CONTENTS

1. Introduction ................................................................................................. 3

2. Main Feature ............................................................................................... 4

3. Technical Specifications .............................................................................. 5

3.1 Electrical Characteristics.................................................................... 5

3.2 Environmental Characteristics............................................................ 6

3.3 Physical Characteristics ..................................................................... 6

4. Software Interface ....................................................................................... 7

4.1 NMEA Transmitted Messages ............................................................ 7

4.2 RTCM Received Data ...................................................................... 13

4.3 Manufacturing Default: ..................................................................... 14

5. Mechanical Dimensions ............................................................................ 15

5.1 GR-82 outline ................................................................................... 15

5.2 Pin assignment of connector ............................................................ 16

6. Operation and Test .................................................................................... 18

7. Ordering Information ................................................................................. 21

7.1 Products Options.............................................................................. 21

7.2 Accessories ...................................................................................... 22

Appendix A : Reference Design .................................................................... 23

Appendix B : RF Connector........................................................................... 24

GPS

Productseries With HOLUX, You never lose the way!

HOLUX Technology, Inc.

1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)

TEL: 886-3-6687000 FAX:886-3-6687111 E-mail:in[email protected] Website:www.holux.com.tw

1. Introduction

The HOLUX GR-82 Engine Board is a total solution GPS receiver, designed based on SiRF

GSC3 architecture. The GR-82 series can connect with Holux’s GPS module: GR-85, GR-86,

GR-87 and GR-88.

GR-82

Computer

RS-232

5V power supply

20-pin

connector

3-pin connector

2.54 mm pitch

HOLUX GR-82 is a high performance, low power consumption, small size, very easy

integrated GPS engine board designed for a broad spectrum of OEM system applications. This

product is based on the proven technology found in other HOLUX 20-channel GPS receivers and

SiRF SGSC3 chipset solution. The GPS engine board will track up to 20 satellites at a time while

providing fast time-to-first-fix and one-second navigation updates. Its far- reaching capability

meets the sensitivity requirements of car navigation as well as other location-based applications.

Therefore, HOLUX GR-82 engine board is very suitable for the customers who devote

themselves to AVL system integration and location-based service.

The GR-82 design utilizes the latest surface mount technology (BGA) and high level circuit

integration to achieve superior performance while minimizing space and power requirements.

This hardware capability combined with software intelligence makes the board easy to be

integrated and used in all kinds of navigation applications or products. The application system

may communicate with the engine board set via RS-232 compatible bi-directional communication

channels.

GPS

Productseries With HOLUX, You never lose the way!

HOLUX Technology, Inc.

1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)

TEL: 886-3-6687000 FAX:886-3-6687111 E-mail:in[email protected] Website:www.holux.com.tw

2. Main Feature

zBuild on high performance SiRF GSC3f chipset.

zAverage cold start time under 42 seconds.

zLow power consumption

z20 channels “All-in-View” tracking.

z200,000+ effective correlators for fast TTFF and high sensitivity acquisitions

zIntegrated ARM7TDMI CPU with software engineering services and available for embedded

customer defined applications.

zOn chip 1Mb SRAM.

zCMOS 3V or RS-232 output level with one for GPS receiver command message interface,

another one for RTCM-104 DGPS input.

zCompact Size: 40(W) x 50 (L) x 13.5 (H) (mm) (height of connector pin is included)

zReacquisition Time 0.1 seconds

zSupport Standard NMEA-0183 and SiRF Binary protocol

zSupport Accurate 1PPS Output Signal Aligned with GPS Timing

zMulti-path Mitigation Hardware

zOn-board RTCM SC-104 DGPS and WAAS /EGNOS Demodulator

zBuilt-in a lithium battery make GPS fast positioning.

GPS

Productseries With HOLUX, You never lose the way!

HOLUX Technology, Inc.

1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)

TEL: 886-3-6687000 FAX:886-3-6687111 E-mail:in[email protected] Website:www.holux.com.tw

3. Technical Specifications

3.1 Electrical Characteristics

3.1.1 General

1). Frequency：L1, 1575.42 MHz.

2). C/A code：1.023 MHz chip rate.

3). Channels：20.

3.1.2 Accuracy (Open Sky)

1). Position：10 meters, 2D RMS.

2). 7 meters 2D RMS, WAAS corrected.

3). 1-5 meters, DGPS corrected.

4). Altitude ：< ± 35 m vertical in term of 95%.

5). Velocity：0.1 meters/second.

6). Time 1 microsecond synchronized to GPS time.

3.1.3 Datum

1). Default：WGS-84.

2). Other Support different datum by request.

3.1.4 Acquisition Rate (Open sky, stationary requirements)

1). Reacquisition：0.1 sec., average.

2). Hot start：1 sec., average.

3). Warm start：38 sec., average.

4). Cold start：42 sec., average.

3.1.5 Dynamic Conditions

1). Altitude : 18,000 meters (60,000 feet)max.

2). Velocity：515 meters/second (1,000 knots) max.

3). Acceleration：4g, max.

4). Jerk：20 meters/second, max.

3.1.6 Power

1). Input power input：3.3~5.5 VDC input.

2). Input current: Less than 80 mA (without antenna) .

3). Backup power: 3V Rechargeable Lithium cell battery, up to 500 hours discharge.

4). External 3V backup battery. (optional)

GPS

Productseries With HOLUX, You never lose the way!

HOLUX Technology, Inc.

1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)

TEL: 886-3-6687000 FAX:886-3-6687111 E-mail:in[email protected] Website:www.holux.com.tw

3.1.7 RF interface

1). Antenna connector type: MCX, MMCX or SMA, 2.8 VDC output. (optional output

VCC_IN)

2). Minimum signal tracked: -159 dBm. (based on SiRF GSC3f spec.)

3). Active antenna

3.1.8 Serial Port

1). Two full duplex serial communication, RS232 or CMOS 3V interface, with user

selectable baud rate (4800-Default, 9600, 19200, 38400).

2). Simple and straightforward connection to PC.

3). NMEA 0183 Version 2.2 ASCII output (GGA, GSA, GSV, RMC (VTG , GLL and ZDA for

optional)).

4). DGPS protocol RTCM SC-104 message types 1, 2 and 9 or WAAS (in USA area) or

EGNOS (in European area)

5). SiRF binary-position, velocity, altitude, status output.

3.1.9 TIMEMARK-1PPS Pulse

1). Level CMOS 3V.

2). Pulse duration 1 microsecond.

3). Time reference At the pulse positive edge.

4). Measurements Aligned to GPS second, ±1 microsecond.

3.2 Environmental Characteristics

1). Operating temperature range -10 to +60 degree C.

2). Storage temperature range -20 to +70 degree C.

3.3 Physical Characteristics

1) Active Size: 40(W) x 50(L) x 13.5(H) (mm) (height of connector included)

2) Weight: 9 g.

3) Connector 20-pin straight male header, 2 mm pitch.

GPS

Productseries With HOLUX, You never lose the way!

HOLUX Technology, Inc.

1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)

TEL: 886-3-6687000 FAX:886-3-6687111 E-mail:in[email protected] Website:www.holux.com.tw

4. Software Interface

The GR-82 interface protocol is based on the National Marine Electronics Association's

NMEA 0183 ASC interface specification, which is defined in NMEA 0183, Version 2.2 and theⅡ

Radio Technical Commission for Maritime Services (RTCM Recommended Standards For

Differential Navstar GPS Service, Version 2.1, RTCM Special Committee No.104).

As soon as the initial self-test is complete, the GR-82 begins the process of satellite

acquisition and tracking automatically. Under normal circumstances, it takes approximately 42

seconds to achieve a position fix, 38 seconds if ephemeris data is known. After a position fix has

been calculated, information about valid position, velocity and time is transmitted over the output

channel.

The GR-82 utilizes initial data, such as last stored position, date, time and satellite orbital data,

to achieve maximum acquisition performance. If significant inaccuracy exists in the initial data, or

the orbital data is obsolete, it may take more time to achieve a navigation solution. The GR-82

Auto-locate feature is capable of automatically determining a navigation solution without

intervention from the host system. However, acquisition performance can be improved as the

host system initializes the GR-82 in the following situation:

zMoving further than 500 kilometers.

zFailure of Data storage due to the inactive internal memory battery.

4.1 NMEA Transmitted Messages

The default communication parameters for NMEA output are 4800 baud, 8 data bits, stop bit,

and no parity.

Table 4-1 NMEA-0183 Output Messages

NMEA Record Description

GPGGA Global positioning system fixed data

GPGLL Geographic position- latitude/longitude

GPGSA GNSS DOP and active satellites

GPGSV GNSS satellites in view

GPRMC Recommended minimum specific GNSS data

GPVTG Course over ground and ground speed

GPMSS Radio-beacon Signal-to-noise ratio, signal strength,

GPS

Productseries With HOLUX, You never lose the way!

HOLUX Technology, Inc.

1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)

TEL: 886-3-6687000 FAX:886-3-6687111 E-mail:in[email protected] Website:www.holux.com.tw

frequency, etc.

GPZDA PPS timing message (synchronized to PPS)

4.1.1 Global Positioning System Fix Data (GGA)

Table 4-2 contains the values for the following example:

$GPGGA,161229.487,3723.2475,N,12158.3416,W,1,07,1.0,9.0,M, , , ,0000*18

Table 4-2 GGA Data Format

Name Example Units Description

Message ID $GPGGA GGA protocol header

UTC Time 161229.487 hhmmss.sss

Latitude 3723.2475 ddmm.mmmm

N/S Indicator N N=north or S=south

Longitude 12158.3416 dddmm.mmmm

E/W Indicator W E=east or W=west

Position Fix Indicator 1 See Table 5-3

Satellites Used 07 Range 0 to 12

HDOP 1.0 Horizontal Dilution of Precision

MSL Altitude (1) 9.0 Meters

Units M Meters

Geoid Separation(1) Meters

Units M Meters

Age of Diff. Corr. second Null fields when DGPS is not used

Diff. Ref. Station ID 0000

Checksum *18

<CR> <LF> End of message termination

(1). SiRF Technology Inc. does not support geoid corrections. Values are WGS84 ellipsoid heights.

Table 4-3 Position Fix Indicator

Value Description

0 0 Fix not available or invalid

1 GPS SPS Mode, fix valid

2 Differential GPS, SPS Mode, fix valid

3 GPS PPS Mode, fix valid

GPS

Productseries With HOLUX, You never lose the way!

HOLUX Technology, Inc.

1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)

TEL: 886-3-6687000 FAX:886-3-6687111 E-mail:in[email protected] Website:www.holux.com.tw

4.1.2 Geographic Position with Latitude/Longitude(GLL)

Table 4-4 contains the values for the following example:

$GPGLL,3723.2475,N,12158.3416,W,161229.487,A*2C

Table 4-4 GLL Data Format

Name Example Units Description

Message ID $GPGLL GLL protocol header

Latitude 3723.2475 ddmm.mmmm

N/S Indicator N N/S Indicator N N=north or S=south

Longitude 12158.3416 dddmm.mmmm

E/W Indicator W E=east or W=west

UTC Position 161229.487 hhmmss.sss

Status A A=data valid or V=data not valid

Checksum *2C

<CR> <LF> End of message termination

4.1.3 GNSS DOP and Active Satellites (GSA)

Table 4-5 contains the values for the following example:

$GPGSA,A,3,07,02,26,27,09,04,15, , , , , ,1.8,1.0,1.5*33

Table 4-5 GSA Data Format

Name Example Units Description

Message ID $GPGSA GSA protocol header

Mode 1 A See Table 5-6

Mode 2 3 See Table 5-7

Satellite Used(1) 07 Sv on Channel 1

Satellite Used(1) 02 Sv on Channel 2

…… ….

Satellite Used(1) Sv on Channel 12

PDOP 1.8 Position Dilution of Precision

HDOP 1.0 Horizontal Dilution of Precision

VDOP 1.5 Vertical Dilution of Precision

Checksum *33

<CR> <LF> End of message termination

1. Satellite used in solution.

GPS

Productseries With HOLUX, You never lose the way!

HOLUX Technology, Inc.

1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)

TEL: 886-3-6687000 FAX:886-3-6687111 E-mail:in[email protected] Website:www.holux.com.tw

Table 4-6 Mode 1

Value Description

M Manual—forced to operate in 2D or 3D mode

A2DAutomatic—allowed to automatically switch 2D/3D

Table 4-7 Mode 2

Value Description

1 Fix Not Available

2 2D

3 3D

4.1.4 GNSS Satellites in View (GSV)

Table 4-8 contains the values for the following example:

$GPGSV,2,1,07,07,79,048,42,02,51,062,43,26,36,256,42,27,27,138,42*71

$GPGSV,2,2,07,09,23,313,42,04,19,159,41,15,12,041,42*41

Table 4-8 GSV Data Format

Name Example Units Description

Message ID $GPGSV GSV protocol header

Number of Messages(1) 2 Range 1 to 3

Message Number(1) 1 Range 1 to 3

Satellites in View 07

Satellite ID 07 Channel 1 (Range 1 to 32)

Elevation 79 degrees Channel 1 (Maximum 90)

Azimuth 048 degrees Channel 1 (True, Range 0 to 359)

SNR (C/No) 42 dBHz Range 0 to 99, null when not tracking

.... ....

Satellite ID 27 Channel 4 (Range 1 to 32)

Elevation 27 degrees Channel 4 (Maximum 90)

Azimuth 138 degrees Channel 4 (True, Range 0 to 359)

SNR (C/No) 42 dBHz Range 0 to 99, null when not tracking

Checksum *71

<CR> <LF> End of message termination

(1). Depending on the number of satellites tracked multiple messages of GSV data may be required.

4.1.5 Recommended Minimum Specific GNSS Data (RMC)

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