GM-R900 User’s Manual
GM-R900
GPS Receiver User’s Manual
EverMore Technology Inc.
EverMore Technology Inc.
2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 300, R.O.C.
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GM-R900 User’s Manual
Manual Revision History
Revision
Issue 1.0
Date
March 2006
Update Summary
Initial release
© EverMore Technology Inc. All rights reserved.
Not to be reproduced in whole or part for any purpose without written permission of EverMore Technology Inc.
Information provided by EverMore Technology Inc. is believed to be accurate and reliable. However, no
responsibility is assumed by EverMore Technology Inc. for its use. EverMore Technology Inc. reserves the right to
change specification at any time without notice.
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GM-R900 User’s Manual
Contents
1. INTRODUCTION ............................................................................................... 5
1.1 Overview ............................................................................................................................. 5
1.2 Features ............................................................................................................................... 6
1.3 Applications......................................................................................................................... 6
1.4 Start-up Modes ................................................................................................................... 7
2. TECHNICAL SPECIFICATIONS ................................................................... 8
2.1 Electrical Characteristics .................................................................................................. 8
2.2 Environmental Characteristics ......................................................................................... 9
2.3 Physical Characteristics..................................................................................................... 9
3. HARDWARE INTERFACE ........................................................................... 10
3.1 GM-R900 PS/2 Female Connector (standard type) ...................................................... 10
3.2 GM-R900 Female PS/2 Connector Interface ................................................................. 11
3.3 GM-R900 Accessories ...................................................................................................... 12
3.3.1 DB9 9 Pins Female and PS/2 Male Connector .................................................................. 12
3.3.2 USB Connector .............................................................................................................. 13
3.4 GM-R900 Dimensions ...................................................................................................... 14
3.5 GM-R900 Appearance Diagram ..................................................................................... 14
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4 GM-R900 USB DRIVER INSTALLATION .................................................. 15
5. GPS TESTING ................................................................................................. 16
6. LIMITED WARRANTY ................................................................................... 17
7. APPENDIX ........................................................................................................ 17
8. ORDERING INFORMATION ........................................................................ 18
8.1 Optional Types Cable....................................................................................................... 18
8.1.1 Male PS/2 Cable ............................................................................................................. 18
8.1.2 SP6P Cable .................................................................................................................... 19
8.1.3 RS-232 Cable (DB9 9 Pins Female + PS/2 Male) .............................................................. 20
8.1.4 USB Cable (With USB Bridge Controller IC) ................................................................... 21
8.2 Car Charger List .............................................................................................................. 22
9. SERIES PRODUCTS INFORMATION ....................................................... 23
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GM-R900 User’s Manual
1. Introduction
1.1 Overview
EverMore GM-R900 series is a high sensitivity GPS receiver, This product is based on SiRF starIII
chipset in 20 channel GPS receivers solution. The GPS module receiver will track up to 20 satellites at
a time while providing fast time-to-first-fix and 1Hz navigation updates. It is far reaching capability
meets the sensitivity & accuracy requirements of car navigation as well as other location-based
applications, such as AVL system. PDA, Notebook operated navigation system.
The GM-R900 design utilizes the latest surface mount technology and high level circuit integration to
achieve superior performance while minimizing dimension and power consumption. 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 module communicates with application system via
RS-232 level with NMEA-0183 protocol.
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1.2 Features
The GM-R900 GPS engine board offers following features:
z
SiRF starIII Chipset 20 Channels all in view tracking
z
High Sensitivity -159dBm
z
Reacquisition Time: 0.1 second
z
Support Standard NMEA-0183 at 4800 bps baud rate
z
On-board rechargeable battery sustained real-time clock and memory for fast satellite
acquisition during power-up
z
Dimension/Weight: 56mmx53mmx22.5mm/96g
1.3 Applications
z
Land/Marine Navigation
z
Telematics
z
Fleet Management
z
Asset Tracking
z
Timing Reference
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1.4 Start-up Modes
Definitions
DESCRIPTION
Cold Start
The Cold Start takes the longest startup time among EMT GPS receivers. In
this scenario, the receiver has no acknowledgment on the last position, time,
and satellite constellation. The receiver is initiated to search blindly for satellite
signals in the cold start mode.
Another situation is that when no backup battery is connected, the GPS
receiver will be in the cold start mode and there is no data stored in SRAM.
Execute cold start of the test tool when first use. By this way can speed up
position fix time.
Warm Start
In this scenario, the receiver was off less than one week but more than 2-hour
time.
The receiver knows its last position, time and almanac because it has a
backup battery to keep current almanac, position and time stored in SRAM.
In the warm start mode, the receiver can quickly acquire satellites and get a
position fix faster than it does in the cold start mode.
Hot Start
In this scenario, the receiver was off less than 2-hour time. With the back up
battery connected and the current almanac, position, time and ephemeris
stored in SRAM, the receiver applies its last ephemeris data to calculate and
get a position fix.
In the reacquisition mode, the receiver takes time to lock on satellites if
Reacquisition buildings or obstacles are blocking the signals for a short while.
This is very common in urban areas, but please be noted that reacquisition
time has nothing to do with the time-to-first-fix (TTFF).
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2. Technical Specifications
2.1 Electrical Characteristics
2.1.1 General
Frequency
L1, 1575.42 MHz
C/A code
1.023 MHz chip rate
Channels
20
2.1.2 Sensitivity
Tracking
-159dBm type
2.1.3 Accuracy
Position
<15 meters CEP (95%) horizontal, SA off.
Velocity
0.1 meters/second
Time
±100 ns synchronized to GPS time
2.1.4 Datum
Default
WGS-84
Other
Support different datum by request
2.1.5 Acquisition Rate
Hot start
1 sec, average
Warm start
38 sec, average
Cold start
42 sec, average
2.1.6 Dynamic Conditions
Altitude
18,000 meters max
Velocity
515 meters/second (1000 knots) , max.
Acceleration
4g, max
Jerk
20 meters/second3, max.
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2.1.7 Power
Main power input
5V ± 0.5Vp-p DC input.
Supply Current
Max. 80 mA
2.1.8 Serial Port
Electrical interface
LVTTL and RS-232 interface
Protocol message
NMEA-0183, Version 2.2
Default NMEA
GGA, GSA, GSV, RMC 4800 baud rate,
8 bits data, 1 star , 1 stop, no parity.
(Option baud rate: 9600, 19200, 38400)
2.2 Environmental Characteristics
Operating temperature range
-40 ℃ to +80 ℃
Storage temperature range
-45 ℃ to +85 ℃
Operating humidity range
5% to 90% non-condensing
2.3 Physical Characteristics
Dimension:
56mm x 53mm x 22.5mm (2.20”x2.08”x0.88”)
Weight:
96g (3.38oz)
Interface standard connector:
PS/2 female connector
Interface optional connector:
USB cable or car charger for PDA
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3. Hardware Interface
3.1 GM-R900 PS/2 Female Connector (standard type)
PS/2 female connector (standard type)
PS/2 Female Connector Pin Assignment
Pin
1
2
3
4
5
6
Function
RXD
RX
GND
TX
TXD
VCC
4 TX
Input/Output
Input
Input
Level
3.3V, LVTTL
12V, RS-232
Output
Output
Power Supply
12V, RS-232
3.3V, LVTTL
5V
6 VCC
2 RX
PS/2 (Female)
1 RXD
at the GM-R900
3 GND
5 TXD
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3.2 GM-R900 Female PS/2 Connector Interface
Extension Male PS/2 Connector
GM-R900
USB, Link to PC or Notebook
GPS
1M
Extension Male PS/2 Connector
2M
1M
RS-232, Link to PC or Notebook
Standard Female PS/2 Connector
Male PS/2
GM-R900 Link to Host Device Diagram
GM-R900
DC12V
GPS
PDA
Car
Charger
Transition
Connecter
Female PS/2
Connecter
GM-R900 Link to PDA Diagram
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3.3 GM-R900 Accessories
3.3.1 DB9 9 Pins Female and PS/2 Male Connector
DB9 Connector (Female)
Pin
1
2
3
4
5
6
7
8
9
Function
NC
TX
RX
NC
GND
NC
NC
NC
NC
9
5
Input/Output
Level
Output
Input
RS-232
RS-232
Ground
0V
3
DB9
5
1
RS232
PS/2 (Male)
(Female)
2
6
1
4
6
Connector Pin Assignment
PS/2 Connector (Male)
Pin
1
2
Function
NC
NC
Pin
3
4
Function
GND
VCC
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Pin
5
6
Function
NC
NC
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GM-R900 User’s Manual
3.3.2 USB Connector
Pin
1
2
3
4
Function
VCC, 5V
DD+
GND
Color
Red
White
Green
Black
GND
USB Connector
Pin
4
D+
D-
VCC
3
2
1
Pin 1
Connector Pin Assignment
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3.4 GM-R900 Dimensions
Length 56
Unit: mm
Diameter
Wide
6.4
53
26.5
Top View
22.5
Height
Lateral View
3.5 GM-R900 Appearance Diagram
GPS Receiver
Patch
Ant
Length: 2M
PS/2 (Female)
GM-R900
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4 GM-R900 USB Driver Installation
Following is the brief indication of USB driver installation. We enclose a CD for detailed USB driver
installation “GPS USB Driver Setup.pdf ” with products.
Step 1: Copy entire USB driver folders from CD to hard disk
Step 2: Double click the “ USB_CP2102_XP_2000 ” icon
Step 3: Press “OK” button
Step 4: Following the instructions
Step 5: Plug-in GPS to PC USB port
Step 6: Check enables COM port number
Step 7: To test GM-R900-R by testing tool
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5. GPS Testing
The customers can test GM-R900 by testing tool.
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6. Limited Warranty
The GM-R900 is warranted to be free from defects in material and functions for one year from the
date of purchase. Any failure of this product within this period under normal conditions will be replaced
at no charge to the customers
7. Appendix
EverMore Website
Welcome to EverMore website at http://www.emt.com.tw or
http://www.globalsources.com/gpsevermore.co for updated product information and drivers download.
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8. Ordering Information
8.1 Optional Types Cable
8.1.1 Male PS/2 Cable
For all kind definition
PS/2 Connector (Male)
Pin
1
2
3
4
5
6
Function
GND
VCC
NC/RXD
RX
TX
NC/TXD
3 NC/RXD
Input/Output
Ground
Power Supply
Input
Input
Output
Output
Level
0V
5V
3.3V, LVTTL
RS-232
RS-232
3.3V, LVTTL
5 TX
1 GND
PS/2 (Male)
2 VCC
4 RX
6 NC/TXD
Male PS/2 Connectors Pin Assignment
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8.1.2 SP6P Cable
For all kind definition
SP6P Connector (Female)
Pin
1
2
3
4
5
6
Color
Yellow
Red
White
Black
Green
Blue
Function
TXD
VCC
RX
GND
TX
RXD
5 TX
Input/Output
Output
Power Supply
Input
Output
Input
Level
3.3V, LVTTL
5V
12V, RS-232
0V, Ground
12V, RS-232
3.3V, LVTTL
1 TXD
4 GND
6 RXD
Super Mini Din
(Female)
at the GM-R900
3 RX
2 VCC
Connectors Pin Assignment
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8.1.3 RS-232 Cable (DB9 9 Pins Female + PS/2 Male)
For all kind definition
DB9 Connector (Female)
Pin
1
2
3
4
5
6
7
8
9
Function
NC
TX
RX
NC
GND
NC
NC
NC
NC
9
5
Input/Output
Level
Output
Input
RS-232
RS-232
Ground
0V
3
DB9
5
1
RS232
PS/2 (Male)
(Female)
2
6
1
4
6
Connector Pin Assignment
PS/2 Connector (Male)
Pin
1
2
Function
NC
NC
Pin
3
4
Function
GND
VCC
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Pin
5
6
Function
NC
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GM-R900 User’s Manual
8.1.4 USB Cable (With USB Bridge Controller IC)
Pin
1
2
3
4
Function
VCC, 5V
DD+
GND
Color
Red
White
Green
Black
GND
USB Connector
Pin
4
D+
D-
VCC
3
2
1
Pin 1
Connector Pin Assignment
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8.2 Car Charger List
Input voltage: DC12V~24V, Output: 5V/2A
ITEM
Description
1
Car charger for ACER N20
2
Car charger for ACER S60
3
Car charger for ASUS A600
4
Car charger for ASUS A620 / A620BT
5
Car charger for CASIO E115
6
Car charger for CASIO E125/EM500
7
Car charger for CASIO E200
8
Car charger for DELL AXIM X3
9
Car charger for DELL AXIM X5
10
Car charger for Eten P300 /
11
Car charger for HP Jonada
12
Car charger for IPAQ iPAQ 38xx/39xx/22xx/4x/5x/Rx/RZ/Hx serial
13
Car charger for IPAQ 36XX/37XX
14
Car charger for Mitac Mio 338/528/558
15
Car charger for NEC
16
Car charger for PALM 500/505/T3
17
Car charger for PALM Vx
18
Car charger for Siemens Loox
19
Car charger for SONY Nxx Series
20
Car charger for SONY Txx
21
Car charger for Toshiba E330/E740
22
Car charger for Toshiba E400
23
Car charger for Toshiba E570
24
Car charger for Toshiba E800
25
Car charger for XDA/T-Mobile MDA
26
Car charger for XDA-II/T-Mobile MDA
27
Car charger for Yakumo Delta 300
28
Car charger for Yakumo Omnikron
29
Car charger for Anex TEK SP230
30
Car charger for Acer N30/N35/N50
31
Car charger for Dell Axim X50V/X50
32
Car charger for ASUS A716 / A730 / A730W / P505
33
Car charger for Palm T5 / Treo 650/Tungsten E2
M500
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9. Series Products Information
z
300 Series for EverMore BBP1202 Chipset:
1: GM-307
z
z
z
(USB G-Mouse)
500 Series for EverMore BBP1202 Chipset:
1: BT-R500
(Bluetooth GPS)
2: GM-R500
(G-MOUSE)
3: CF-R500
(CF Card GPS)
4: CM-M500
(GPS Module)
5: DL-200
(Data logger)
700 Series for Nemerix NJ1030 Chipset:
1: EB-N700
(Engine Board, with patch antenna)
2: EB-N701
(Engine Board, without patch antenna)
3: BT-R700
(Bluetooth GPS Type I)
4: BT-R710
(Bluetooth GPS Type II)
5: CF-R700
(CF Card GPS)
900 Series for SiRF StarIII Chipset:
1: BT-R900
(Bluetooth GPS )
2: GM-R900
(G-Mouse)
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