NaviSys Technology - Your Location Partner
SS4 GPS Smart Antenna Module / GM-428
GM-428, SiRFstarIV, TTL Compatible,
Ultra-High Performance GPS Module
w/ MCX External Antenna Connector
Removes in-band jammers up to 80 dB-Hz
Overview
Industrial operating temperature range: -40 ~ 85℃
GM-428 is built-in with patch antenna, backup battery,
power control pin, and MCX external RF connector.
Technical Specifications
The integrated design allows easily connect and use.
Receiver Performance Data
The built-in SiRFstarIV chip and our experienced design
Receiver Type
48-channel,
provide fast acquisitions and excellent tracking
L1 frequency, C/A code
performance. This self-contained ultra-high performance,
Horizontal Position
< 2.5m (Autonomous)
low power GPS smart antenna module makes it an ideal
Accuracy
< 2.0m (WAAS)
solution for devices demanding both high performance
(50% 24hr static, -130dBm)
and small dimension.
Velocity Accuracy
<0.1 m/s (speed)
Applications
<0.01° (heading)
Driving recorder, digital camera
(50%@30m/s)
Automatic vehicle location
Time To First Fix
Autonomous
Trackers
Hot start
<1sec
Warm start
<35sec
Features
Cold start
<35sec
TTL compatible output
(50% -130dBm)
Compact (24x28x7; mm)
Sensitivity
-147dBm (acquisition)
Easy to use with built-in patch antenna, backup
(Autonomous)
-163dBm (tracking)
battery, and MCX external antenna connector
Max. Update Rate
5Hz
External backup power option available
Max. Altitude
<18,000 m or 60,000 ft
Excellent EMI protection and minimum RF efforts
Max. Velocity
<1,852 km/hr or 1,000 knots
Based on SiRF’s GSD4e low power single chip
Protocol Support
NMEA v3.00, OSP
High performance: -163dBm tracking sensitivity
Default: NMEA 4800bps N,8,1;
Low power: 32mA, tracking (3.3V, 8 SVs, -130dBm)
GGA,GSA,RMC@1Hz, GSV@1/5Hz
SBAS (WAAS, EGNOS, MSAS, QZSS, GAGAN)
SBAS Support
WAAS, EGNOS, MSAS, QZSS,
Multi-mode AGPS support (optional)
GAGAN
Fully EMI shielded
Dynamics
<4g
Local ephemeris prediction
NaviSys Technology Corp.
Tel : +886-3-5632598
Fax: +886-3-5632597
Sales contact: sales@navisys.com.tw
Technical support: service@navisys.com.tw
Address: 2F, No.56, Park Ave. II, Science-Based Industrial Park, Hsinchu 300, Taiwan (R.O.C.)
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NaviSys Technology - Your Location Partner
SS4 GPS Smart Antenna Module / GM-428
Electrical Data
1. Place GM-428 in device with antenna side facing
Power Supply; VCC
3.0~5.5V w/ built-in battery
sky for better signal reception.
2.5~5.5V w/o built-in battery
2. Solder it to main board via DIP connector.
Power Consumption
32mA/average tracking
Backup Power; VBAT
Nominal voltage: 2.5~5.5 V
Ordering Information
TTL I/O
VIH: 1.4~3.6V, VIL: 0~0.45V
GM-428X
VOH: ≧VCC-0.1V, VOL: ≦ 0.4V
Protocols
NMEA, OSP
Environmental Data
*This document is subject to change without notice.
Operating temperature
-40 ~ 85℃ except
battery: -20~60℃
Storage temperature
-40 ~ 85℃except
battery: -40~60℃
Vibration
5Hz to 500Hz, 5g
Shock
Half sine 30g/11ms
Mechanical Data (excluding DIP)
6-pin Interface
Pin
Name
Function
I/O
1
GND
Ground
Input
2
VCC
Power supply
Input
3
TXD-TTL
TTL level serial data output
Output
4
RXD-TTL
TTL level serial data input
Input
5
PPS
Pulse Per Second signal
Output
6
PWR_CTRL
Power control
Input
high/floating: ON, low: OFF
(VBAT, option)
External backup power
(Input)
Application
NaviSys Technology Corp.
Tel : +886-3-5632598
Fax: +886-3-5632597
Sales contact: sales@navisys.com.tw
Technical support: service@navisys.com.tw
Address: 2F, No.56, Park Ave. II, Science-Based Industrial Park, Hsinchu 300, Taiwan (R.O.C.)
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