Holux M-87 SPECIFICATION

GPS Engine Board

M-87
SPECIFICATION

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

(300) 新竹市科學園區 研發二路30號1 樓

TEL: [phone] FAX: [phone]

Website: www.holux.com

All Right Reserved

M-87

GPS Module series THE PRO NAME IN GPS

Version Change History

Version Date Revised Reason

0.1 2007/06/27 Offic ial release

HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw

M-87

GPS Module series THE PRO NAME IN GPS

Outline

1. Introduction........................................................................................................4

1.1 General introductions ..............................................................................4

1.2 Key Features.............................................................................................4

1.3 Applications ..............................................................................................4

2 Technical Description......................................................................................5

2.1 Block Diagram..........................................................................................5

2.2 Pin Definition............................................................................................5

2.3 Specification...............................................................................................6

2.4 Configuration Information......................................................................8

3. Mechanical Dimension........................................................................................9

3.1 M-87-T0A, M-87-T0C outline.................................................................9

3.2 M-87-T0B, M-87-TOD outline ..............................................................10

4. Package.................................................................................................................11

4.1 Packing.....................................................................................................11

5. User Interface..................................................................................................12

5.1 Protocol....................................................................................................12

5.2 NMEA Protocol......................................................................................12

5.3 MTK NMEA Packet Format..................................................................13

HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw

M-87

GPS Module series THE PRO NAME IN GPS

1. Introduction

1.1 General introductions
M-87 is an easy used 25.4 * 25.4 * 7 mm GPS engine board designed by low

power consumption MTK GPS solution. It provides superior sensitivity up to

-159dBm and fast Time-To-First-Fix in navigation application. The stable
performance of M-87 is your best choice to be embedded in your portable device
design, like PND fo r GPS service.

1.2 Key Features

• small form factor: 25.4 * 25.4 * 7 mm

• RoHS/WEEE compliant

• High sensitivity -159dBm

• Searching up to 32 Channel of satellites

• Fast Position Fix

• Low power consumption

• RTCM -in ready.

• Built-in WAAS/EGNOS/MSAS Demodulator.

• Support NMEA0183 V 3.01 data protocol .

• Real time navigation for location based services.

• Embedded MMCX connector.

• For Car Navigation, Marine Navigation, Fleet Management, AVL and

Location-Based Services, Auto Pilot, Personal Navigation or touring
devices, Tracki ng devices/systems and Mapping devices application

1.3 Applications

• Automotive and Marine Navigation

• Automotive Navigator Tracking

• Emergency Locator

• Geographic Surveying

• Personal Positioning

• Sporting and Recreation

• Embedded applications:

• UMPC, PND.

HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw

M-87

GPS Module series THE PRO NAME IN GPS

2 Tech nical Description

2.1 Block Diagram

RTC
Xtal

2.85V

LDO

SAW

TCXO

16.368MHz

MT3318

Backup
Li_ion_BTY

2.2 Pin Definition

J1 Connector

Pin1

180° MMCX Active
Antenna connector

HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw

M-87

GPS Module series THE PRO NAME IN GPS

Pin Pin Name Type

1

VCC_IN I 3.3 ~ 5 V supply input
2
3
4
5
6 TIMEMARK/

TXA O Serial Data Output A
RXA I Serial Data input A
RXB I Serial Data input B

GND O Ground

I/O TIMEMARK:1PPS Time mark output

RESET(OPTI

ON)

2.3 Specification
General

GPS technology MTK GPS chipset

Frequency L1,1575.42MHZ

Function description

RESET:Reset input(Active Low)(option function)

C/A Code 1.023MHZ chip rate

Channels 32 channels all in view searching

Sensitivity Better than -159dBm

Receiver Accuracy (Follow MTK chip specification)

Without aid:3.0 M 2D-RMS

Position

DGPS(WAAS, EGNOS, MSAS, RTCM):2.5 M

Velocity Without aid:0.1 M/sec

Time 0.1μs. Sync GPS time

Datum

Datum WGS84(Default) total 219 datum’s

Time to First Fix (Follow MTK chip specification)

Hot start 1 sec. average

Warm start 33 sec. average

Cold start 36 sec. average

Reacquisition ＜1sec.

Protocol

NMEA0183(v3.1)- GGA,GSA,GSV,RMC,VTG

GPS Output Data

Support Baud rate 4800/9600/…./115200 bps (default 4800),
Data bit:8,Stop bit:1, No parity.

HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw

M-87

GPS Module series THE PRO NAME IN GPS

Update Rata

1Hz(default)

Protocol Support NMEA-0183

1PPS Enable(1Hz pulse 1% duty cycle)
Limitations (Follow MTK chip specification)

Acceleration Limit ＜4G
Altitude Limit ＜18000 meters
Velocity Limit ＜515 M/sec
Jerk Limit 20 M/sec3
Power

Operation Current Acquisition:60 mA@3.3V
Operation Current Tracking:＜45mA@3.3V

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

DC Input Range

Processing Core

VCC 3.3~5.0V

Processor Type ARM7EJ-S
Interface CMOS 2.8 V Level
Temp erature

Operating Temperature

-10 to +60 .

Storage Temperature -20 to +85 .

Operating Humidity 5% to 95%, Non condensing

Physical

Dimension

Weight

Interface

25.4 * 25.4 * 7 mm.
7g.

Connector 6-pin straight male header,1.25mm pitch

NOTE: TIMEMARK 1PPS(default)/ RESET (option)

This pin default is provides 1 pulse per second output from the M-87
engine board, which is synchronized to within 1 microsecond of GPS time. The
output is a CMOS 2.8V positive level signal. Only upon a situation of tracking
or navigating will output once per second.

The 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. (This
second function setting need contact factory).

HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw

M-87

GPS Module series THE PRO NAME IN GPS

2.4 Configuration Information

M-87 provide 4 configurations because of the different angle of MMCX

connector and different RF interface output voltage.

Model No.

Output Level

(CMOS 3V )

M-87-T0A CMOS 3V 2.85 Y
M-87-T0B CMOS 3V 2.85 Y
M-87-T0C CMOS 3V VCC_IN Y
M-87-T0D CMOS 3V VCC_IN Y

RF interface

output voltage (V)

Back-up battery

(Rechargeable

Lithium)

RF

Connector

Type

MMCX(180°)

MMCX(90°)

MMCX(180°)

MMCX(90°)

HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw

M-87

GPS Module series THE PRO NAME IN GPS

3. Mechanical Dimension

3.1 M-87-T0A, M-87-T0C outline

l Picture

l Design Layout Diagram:(unit mm)

180° MMCX Active Ant
connector

HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw

M-87

GPS Module series THE PRO NAME IN GPS

3.2 M-87-T0B, M-87-TOD outline

l Picture

l Design Layout Diagram:(unit mm)

90° MMCX Active Ant connector

HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw

M-87

GPS Module series THE PRO NAME IN GPS

4. Package

4.1 Packing

EPE Tray dimension : 370*312*20mm,
Standard Content Qty : 50 pcs.

Carton dimension : 376*322*255mm, 10 trays are packed,
Standard Content Qty : 500 pcs。

HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw

M-87

GPS Module series THE PRO NAME IN GPS

5. User Interface

M-87 provides 2-wire digital UART port for communication of GPS position data
using NMEA protocol or MTK extension protocol. UART port is capable of 4800 to
115200 baud rate.

5.1 Protocol

M-87 is default to support standard NMEA-0183 protocol. In addition, a series of
MTK extensions (PMTK messages) have been developed that can be used to provide
extended capabilities common to many applications.

5.2 NMEA Protocol

M-87 is capable of supporting following NMEA formats:

NMEA RECORD Description

GGA GPS fix data

GLL Geographic

GSA GNSS DOP and active satellite

GSV GNSS Satellites in view

RMC Recommended minimum specific GNSS data

VTG Course Over Ground and Ground Speed

ZDA Time&Data

HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw

M-87

GPS Module series THE PRO NAME IN GPS

5.3 MTK NMEA Packet Format

Preamble TalkerID PktType Datafield * CHK1 CHK2 CR LF

Maximum packet length is restricted to 255 bytes

Field Length Type D

Preamble 1 byte Character “$”

TalkerID 4 byte Character string “PMTK”

“000”to “999”, an identifier

PktType 3 byte Character string

DataField Variable

* 1 byte Character

CHK1

2 byte Character string

CHK2

CR, LF 2 byte Binary data

used to tell the decoder how to
decode the packet

“, ”must be inserted ahead
each data filed to help the decoder
process the Data Field

The star symbol is used to mark

the end of Data Field

checksum of the data between
Preamble “, ”and “*”

used to identify the end of a
packet

HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw