USGlobalsat ET-333 User Manual
ET-333
Version 1.3.1
GPS Engine Board
ET-333
Globalsat Technology Corporation
16F., No. 186, Jian-Yi Road, Chung-Ho City, Taipei Hsien 235, Taiwan
Tel: 886-2-8226-3799/ Fax: 886-2-8226-3899
service@globalsat.com.tw
www.globalsat.com.tw
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USGlobalSat, Inc.
1308 John Reed Court, City of Industry, CA 91745
Tel: 626-968-4145 / Fax: 626-968-4373
oem@usglobalsat.com
www.usglobalsat.com
Specifications are subject to be changed without notice.
ET-333
Version 1.3.1
1. Product Information
Product Part I.D. ET-333
Product Description:
The ET-333 GPS engine board is low cost but maintains high reliability and accuracy making it an ideal
choice for integration with OEM/ODM systems
.
Product Features:
9 SiRF StarIII
9 Very high sensitivity (Tracking Sensitivity: -159dBm)
9 Extremely fast TTFF (Time To First Fix) at low signal levels
9 Supports the NMEA 0183 data protocol
9 Connector for active antenna
9 Compact size
9 Foliage Lock for weak signal tracking
9 All-in-view 20-channel parallel processing
9 Enhanced algorithm for navigation stability
9 Enhanced algorithm for navigation stability
9 Superior urban canyon performance
9 SuperCap Pad to maintain system data for rapid satellite acquisition (Optional)
9 RoHS compliant
Product Specifications
GPS Receiver
Chipset SiRF StarIII
Frequency L1, 1575.42 MHz
Code 1.023 Mhz chip rate
Protocol Electrical Level: TTL level,
Channels 20
Sensitivity -159dBm
Output Voltage Level: 0V~2.85V
Baud Rate: 4800 ~ 57600 bps adjustable
Output Message: NMEA 0183 GGA, GSA,
GSV, RMC, SiRF binary (VTG, GLL optional)
Specifications are subject to be changed without notice.
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ET-333
Cold Start 42 seconds average
Warm Start 38 seconds average
Hot Start 1 second average
Reacquisition 0.1 second average
Accuracy Position: 15 meters, 2D RMS
10 meters, 2D RMS, WAAS enabled
Velocity: 0.1 ms (95% SA Off)
Time: 1µs synchronized to GPS time
Maximum Altitude 18,000 meter (60,000 feet) max
Maximum Velocity 515 meter/second (1000 knots) max
Maximum Acceleration 4G
Jerk 20m/sec **3
Interface
I/O Connector Type
Version 1.3.1
External Antenna Port
Physical Characteristic
Dimensions 1.3” x 1.3” x 0.2” (31.8 x 31.8 x 6mm)
DC Characteristics
Power Supply 3.8V ~ 6.5V DC Input
Backup Voltage 2.5 ~ 3.6V 10uA backup current
Power Consumption 42mA (Continuous Mode)
25mA (Trickle Power Mode)
Environmental Range
Humidity Range 5% to 95% non-condensing
Operation Temperature -40F to +176F (-40C to +85C)
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Specifications are subject to be changed without notice.
2. Technical Information
Physical Characteristics
ET-333
Version 1.3.1
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Specifications are subject to be changed without notice.
Pin Assignment
ET-333
Version 1.3.1
1
2
3
4
5
6
7
8
9
10
11
12
GND Ground 3.8~6.5 DC power input (Input)
VBAT Backup Battery (Input)
VDC 3.3~5.5 DC power input (Input)
PBRES Push Button Reset Input (Active Low) (Input)
GP101 Special function
TX Serial Data Output (GPS Data)(Output)
RX Serial Data Input (Command)
GND Ground
GND Ground
SELECT (Reserved)
TIMEMARK 1PPS Time Mark Output
GND Ground
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Specifications are subject to be changed without notice.
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