达伽马 GPS导航设备-SR-86说明书.pdf

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SR-86 Manual V1.1 GPS Engine Board Manual SR-86 SiRF Star ⅢⅢⅢⅢ V 1.1 SR86 SR861 Made in Taiwan 2008/08/08 service@dagamagps.com www.dagamagps.com Free service hot-line(for mainland):400-820-1322

SR-86 Manual V1.1 Specifications subject to change without prior notice! Contents 1. Introduction ………………………………………………………..…………. 2 1.1 Overview ……………………………………………………………………. 2 2. Technical Specifications …………………………………………………… 3 2.1. Electrical Characteristics…………………………………………………. 3 2.2. Environmental Characteristics……………………………………..……… 4 2.3. Physical Characteristics……………………………………………...…..… 4 3. Applications ……………………………………………………………… 5 4. Operation and Test (optional) ………………..……………… 5 Appendix: Software Specifications ……………………………………….. 8 1

1. Introduction 1.1. Overview SR-86 Manual V1.1 Product Introduction SR-86 series GPS modules incorporates high sensitivity, high performance SiRF StarⅢ chipset solution in a compact design. The module tracks up to 20 satellites at a time while offering fast time-to-first-fix and 1Hz navigation update. The unit is very suitable for broad applications such as Handheld, PDA, PPC or other battery operated navigation system. Main Features ■ High sensitivity SiRF StarⅢ chipset. ■ High performance receiver tracks up to 20 satellites. ■ TTL output for GPS command interface. ■ Low power consumption. ■ Average Cold Start time under 42 seconds. ■ On-chip 1Mb SRAM. ■ Reacquisition time 0.1 second. ■ Support accurate 1PPS output signal aligned with GPS timing. ■ Support Standard NMEA-0183 and SiRF Binary protocol. ■ Multi-path mitigation hardware. ■ Compact size S86: 24*24*2.5 mm3; S861: 24*21*2.5 mm3. ■ Easy integration into hand-held devices. The SR-86 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 RS232 (TTL level) with NMEA-0183 protocol. 2

SR-86 Manual V1.1 2. Technical Specifications 2.1. Electrical Characteristics 2.1.1 General Frequency C/A code Channels 2.1.2 Sensitivity Tracking 2.1.3 Accuracy (Open Sky) L1, 1575.42 MHz 1.023 MHz chip rate 20 channels all in view tracking -159 dBm typical Position Time 2.1.4 Datum Default < 10 meters, 2D RMS < 7 meters 2D RMS, WAAS corrected 1-5 meters, DGPS corrected 1 microsecond synchronized to GPS time WGS-84 2.1.5 Acquisition Rate (Open Sky) Hot start Warm start Cold start Reacquisition 1 sec, average 38 sec, average 42 sec, average 0.1 sec, average 2.1.6 Dynamic Conditions Altitude Velocity Acceleration Jerk 2.1.7 Power < 18,000 meters (60,000 feet) < 515 meters/sec (1000 knots) < 4 G 20 meters/sec max Main power input Supply Current 3.0 ~ 5.5 VDC input. < 60 mA @ 3.3V 3

2.1.8 Serial Port Electrical interface Protocol support Default NMEA SR-86 Manual V1.1 Two full duplex serial communication, via RS232, TTL interface NMEA-0183, SiRF Binary GGA, GSA, GSV, RMC, (GLL, VTG, and ZDA optional) 4800 baud rate (other rate optional) 8 bits data, 1 stop bit, no parity. Antenna Status sentence ZANTAX (Optional) 2.1.9 Time 1 PPS Pulse, pulse duration 1µs. Time reference at the pulse positive edge. Synchronized to GPS time, ±1µs. 2.2. Environmental Characteristics Operating temperature range Storage temperature range -40 oC to +85 oC -45 oC to +100 oC 2.3. Physical Characteristics Mechanical Outline SR-86 outline SR-861 outline 4

Pin assignment SR-86 Manual V1.1 Pin 1 2 3 4 5 6 7 8 9 10 Pin Name Function description GND RFIN GND GND Ground GPS RF signal input Ground Ground nRESET Reset input, Active low LED_ON_OFF 1 Hz High/Low pulse output BATTERY Backup battery input (2.5–3.3V) PWRCTL Power on/off control VCC_IN +5V DC power input GND Ground Pin 11 12 13 14 15 16 17 18 19 20 Pin Name Function description RXDB TXDA RXDA Serial Data input B Serial Data Output A Serial Data input A BootSEL Re-programming flash GND Ground Reserved Reserved Reserved for feature Reserved for feature Reserved Reserved for feature TIMERMARK 1PPS pulse output (option) GND Ground 3. Applications The SR-86 series engine module is a high performance, ultra low power consumption, GPS receiver. Applications are as follow: Car Navigation Wrist Watch Solar Operated Device Marine Navigation Fleet Management AVL and Location-Based Services Radar detector with GPS function Hand-Held Device for Personal Positioning and Navigation Ideal for PDA, Pocket PC and Other Computing Devices at GPS Application 4. Operation and Test (optional) The customers can change the data protocol and communication data baud rate for their applications using a GPS Viewer software. Installing appropriate viewer program to host device, you may check the status of the GPS receiver whenever you like to. Following are standard buttons and operation steps. 5

SR-86 Manual V1.1 (a) Execute the Viewer program. Press the “COM” button to set “Com Port” for this data link and “Baud Rate” to 4800. (b) Click “OPEN” to download the received data. Usually one window shows the NMEA format data stream and another window shows tracked satellite constellation and signal quality status. (c) Once the link is successful, click “CLOSE” button to exit the program. However, you may click the “Cold” button to perform “cold start” testing. 6

Appendix: Antenna Status sentence (Optional) SR-86 Manual V1.1 $ZANTAX,0,0,0,0*xx Field Message ID Antenna Port Reserved Reserved Reserved Checksum Message terminator Format $ZANTAX int int int int *xx Note Message for specified user External antenna status: 0: external antenna normal Reserved Reserved Reserved 1: external antenna open/short ASCII 13, ASCII 10 Example $ZANTAX 0 0 0 0 *xx 7

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