HOLUX GR-87 GPS Receiver Module Price buy introduction Info|Components-GPS-module

HOLUX GR-87 is a high performance, low power consumption, small size, very easy integrated GPS engine board designed for a broad spectrum of OEM system applications. This product is based on the proven technology found in other HOLUX 20 channel GPS receivers and SiRFstar III chipset solution. The GPS engine board will track up to 12 satellites at a time while providing fast time-to-first-fix and one-second navigation updates. Its far reaching capability meets the sensitivity requirements of car navigation as well as other location-based applications. Therefore, HOLUX GR-87 engine board is very fit to the customers who devote themselves to AVL system integration and location-based service.

The GR-87 design utilizes the latest surface mount technology (BGA) and high level circuit integration to achieve superior performance while minimizing space and power requirements. 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 application system may communicate with the engine board set via two RS232 compatible bi-directional communication channels with CMOS/CMOS 3V voltage level.

• Build on high performance SiRF GSC3f/LP chipset. 
• Average Cold Start time and under 42 seconds. 
• Low power consumption  
• 20 channels All-in-View! trackin 
• 200,000+ effective correlators for fast TTFF and high sensitivity
• acquisitions  Integrated ARM7TDMI CPU with software engineering services and available for embedded customer defined applications.  On chip 1Mb SRAM. 
• Dual TTL level serial ports with one for GPS receiver command message interface, another one for RTCM-104 DGPS input.
• Compact Board Size 1!±x1!±x0.2725.4x25.4x7mm) for easy integration
• into hand-held device.  Reacquisition Time 0.1 seconds
• Support Standard NMEA-0183 and SiRF Binary protocol
• Support Accurate 1PPS output signal aligned with GPS Timing
• Multi-path Mitigation Hardware  On-board WAAS /EGNOS Demodulator
• Built-in a lithium battery make GPS fast positioning

 2. Technical Specifications
2.1. Electrical Characteristics
2.1.1 General
1). FrequencyL1, 1575.42 MHz.
2). C/A code1.023 MHz chip rate.
3). Channels20(according to SiRF!ˉs spec.).
 
2.1.2 Accuracy (Open Sky)
1). Position10 meters, 2D RMS.
2). 7 meters 2D RMS, WAAS corrected.
3). 1-5 meters, DGPS corrected.

Product series                                     
4). Altitude < !à 35m Vertical in term of 95%.
5). Velocity0.1 meters/second.
6). Time 1 microsecond synchronized to GPS time.
 
2.1.3 Datum
1). DefaultWGS-84.
2). Other Support different datum by request.
 
2.1.4 Acquisition Rate (Open sky, stationary requirements)
1). Reacquisition0.1 sec, average.
2). Hot start1 sec, average.
3). Warm start38 sec, average.
4). Cold start42 sec, average.
 
2.1.5 Dynamic Conditions
1). Altitude : 18,000 meters (60,000 feet) max.
2). Velocity515 meters/second (1000 knots) max.
3). Acceleration4g, max.
4). Jerk20 meters/second, max.
 
2.1.6 Power
1). Input power input3.3 ~ 5.5 VDC input.
2). Input current: 50 mA (without antenna) .
3). Backup power: 3V Rechargeable Lithium cell battery, up to 500 hours  
             discharge.
 
2.1.7 RF interface
1). Antenna connector type: MMCX, output 3.0 VDC. (optional output
VCC_IN)
2). Minimum signal tracking: -159 dBm (according to SiRF!ˉs spec)
 
2.1.8 Serial Port
1). Two full duplex serial communication, CMOS 3.0V interface, with user
selectable baud rate (4800-Default, 9600, 19200, 38400).
2). NMEA 0183 Version 2.2 & 3.0 ASCII output (GGA, GSA, GSV, RMC
(VTG , GLL and ZDA for optional)).
3). SiRF binary-position, velocity, altitude, status output.

2.1.9 TIMEMARK-1PPS Pulse
1). Level CMOS 3.0V.
2). Pulse duration 1 microsecond.
3). Time reference at the pulse positive edge.
4). Measurements aligned to GPS second, !1 microsecond.
 
2.2. Environmental Characteristics
1). Operating temperature range -10   to +60  
2). Storage temperature range -20  to +85 
.
2.3. Physical Characteristics
1) Active Size:  25.4(W) x 25.4(D) x 7(H) (mm) .
2) Weight:  8 g.
3) Interface connector 6-pin straight male header, 1.25 mm pitch