Holux GR-87 Manuale utente

No.1-1, Innovation Rd.1, HsinChu City 300, Science-based Industrial Park, aiwan

(300) 新竹市科學園區創新一路 1-1 號

EL: 03-6687000 FAX: 03-6687111

Website: www.holux.com

GR-87

SPECIFICA ION

GPS Engine Board

GR-87

GPS Module series

HE PRO NAME IN GPS

HOLUX echnology, Inc.

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

EL: 886-3-6687000 FAX: 886-3-6687111 E-mail:info@holux.com.tw

Website:www.holux.com.tw

1. Main Feature

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Build on high performance SiRF StarIII chipset.

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Average Cold Start time and under 45 seconds.

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Low power consumption

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20 channels “All-in-View” tracking.

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200,000+ effective correlators for fast FF and high sensitivity

acquisitions

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Integrated ARM7 DMI CPU with software engineering services and

available for embedded customer defined applications.

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On chip 1Mb SRAM.

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Dual L level serial ports with one for GPS receiver command message

interface, another one for R CM-104 DGPS input.

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Compact Board Size 1”x1”x0.27”(25.4x25.4x7mm) for easy integration

into hand-held device.

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Reacquisition ime 0.1 seconds

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Support Standard NMEA-0183 and SiRF Binary protocol

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Support Accurate 1PPS Output Signal Aligned with GPS iming

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Multi-path Mitigation Hardware

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On-board R CM SC-104 DGPS and WAAS /EGNOS Demodulator

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Built-in a lithium battery make GPS fast positioning

2. Technical Specifications

2.1. Electrical Characteristics

2.1.1 General

1). Frequency：L1, 1575.42 MHz。

2). C/A code：1.023 MHz chip rate。

3). Channels：20。

2.1.2 Accuracy Open Sky)

1). Position：10 meters, 2D RMS。

2). 7 meters 2D RMS, WAAS corrected。

3). 1-5 meters, DGPS corrected。

GR-87

GPS Module series

HE PRO NAME IN GPS

HOLUX echnology, Inc.

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

EL: 886-3-6687000 FAX: 886-3-6687111 E-mail:info@holux.com.tw

Website:www.holux.com.tw

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

5). Velocity：0.1 meters/second。

6). ime 1 microsecond synchronized to GPS time。

2.1.3 Datum

1). Default：WGS-84。

2). Other Support different datum by request。

2.1.4 Acquisition Rate Open sky, stationary requirements)

1). Reacquisition：0.1 sec., average。

2). Snap start：2 sec., average。

3). Hot start：8 sec., average。

4). Warm start：38 sec., average。

5). Cold start：42 sec., average。

2.1.5 Dynamic Conditions

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

2). Velocity : 515 meters/second (1000 knots) max。

3). Acceleration : 4g, max。

4). Jerk : 20 meters/second, max。

2.1.6 Power

1). Input power : 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。

2.1.7 RF interface

1). Antenna connector type: MMCX, output 2.8~3 VDC. (optional output

VCC_IN)

2). Minimum signal tracking: -159 dBm。

2.1.8 Serial Port

1). wo full duplex serial communication, CMOS interface, with user

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

2). NMEA 0183 Version 2.2 ASCII output (GGA, GSA, GSV, RMC (V G ,

GR-87

GPS Module series

HE PRO NAME IN GPS

HOLUX echnology, Inc.

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

EL: 886-3-6687000 FAX: 886-3-6687111 E-mail:info@holux.com.tw

Website:www.holux.com.tw

GLL and ZDA for optional))。

3). DGPS protocol R CM SC-104 message types 1, 2 and 9。

4). SiRF binary-position, velocity, altitude, status output。

2.1.9 TIMEMARK-1PPS Pulse

1). Level CMOS 3V。

2). Pulse duration 1 microsecond。

3). ime reference At the pulse positive edge。

4). Measurements Aligned to GPS second,

1 microsecond。

2.2. Environmental Characteristics

1). Operating temperature range -10 ℃ to +60 ℃。

2). Storage temperature range -20 ℃ to +85 ℃。

2.3. Physical Characteristics

1) Active Size: 25.4(W) x 25.4(D) x 7(H) (mm) 。

2) Weight: 2 g。

3) Interface connector 6-pin straight male header, 1.25 mm pitch 。

GR-87

GPS Module series

HE PRO NAME IN GPS

HOLUX echnology, Inc.

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

EL: 886-3-6687000 FAX: 886-3-6687111 E-mail:info@holux.com.tw

Website:www.holux.com.tw

3. Mechanical Dimensions

3.1. GR-87-T0A, GR-87-T0C outline:

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Picture

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Design Layout Diagram: (unit mm)

GR-87

GPS Module series

HE PRO NAME IN GPS

HOLUX echnology, Inc.

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

EL: 886-3-6687000 FAX: 886-3-6687111 E-mail:info@holux.com.tw

Website:www.holux.com.tw

3.2. GR-87-T0B, GR-87-T0D outline:



Picture



Design Layout Diagram: (unit mm)

GR-87

GPS Module series

HE PRO NAME IN GPS

HOLUX echnology, Inc.

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

EL: 886-3-6687000 FAX: 886-3-6687111 E-mail:info@holux.com.tw

Website:www.holux.com.tw

3.3. Pin assignment of connector:

able 4-1 is pin list of the 6-Pin Interface Connector. Connector is Male header

1.25mm pitch DIP R/A type. Actual pin size see appendix B.

able 4-1 J1 connector pin definition:

Pin Name Function description

1 VCC_5V +3.5~5.5VDC power input

2 XA Serial Data output port A(CMOS Level: Voh 2.4V ≧

Vol 0.4V Ioh=Iol=2mA)≦

3 RXA Serial Data input port A(CMOS Level Vih≧0.7*VCC

Vil≦0.3*VCC)

4 RXB Serial Data input port B(CMOS Level Vih≧0.7*VCC

Vil≦0.3*VCC)

5 GND Power ground

6 IMEMARK/

RESE (option)

IMEMARK: 1PPS ime mark output(Vil≦0.2V Pulse

Width 1 usec)。

RESE : Reset Input (Active Low)(option function)

3.3.1 VCC_5V

his is the main DC power supply for a +3.3~ 5.5 V engine board。

3.3.2 TXA

his is the main transmitting channel and is used to output navigation and

measurement data for user written software。

3.3.3 RXA

his is the main receiving channel and is used to receive software commands

to the board from user written software。

3.3.4 RXB

his is the auxiliary receiving channel and is used to input differential

corrections to the board to enable DGPS navigation。

3.3.5 GND

GND provides the ground for the board. Connect all grounds。

GR-87

GPS Module series

HE PRO NAME IN GPS

HOLUX echnology, Inc.

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

EL: 886-3-6687000 FAX: 886-3-6687111 E-mail:info@holux.com.tw

Website:www.holux.com.tw

3.3.6 TIMEMARK default)/ RESET option)

his pin default is provides 1 pulse per second output from the GR-87 engine

board, which is synchronized to within 1 microsecond of GPS time. he output

is a CMOS 3V positive level signal. Only upon a situation of tracking or

navigating will output once per second. his is not available in rickle-Power

mode。

he secondary option function is provides an active-low reset input to the

engine board. It causes the engine board to reset and start searching for

satellites. ( his second function setting need contact factory)。

4. Ordering Information

Model No.

Output Level

CMOS 3V or

RS-232)

RF interface

output v

oltage

Back-up battery

Rechargeable

Lithium)

Power

Saving

RF Connector

Type

GR-87-T0A CMOS 3V 2.8 Y Y MMCX 180∘

∘∘

∘)

GR-87-T0B CMOS 3V 2.8 Y Y MMCX 90∘

∘∘

∘)

GR-87-T0C CMOS 3V VCC_IN Y Y MMCX 180∘

∘∘

∘)

GR-87-T0D CMOS 3V VCC_IN Y Y MMCX 90∘

∘∘

∘)

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