GR-87
GPS Module series
THE PRO NAME IN GPS
HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: 886-3-6687000 FAX: 886-3-6687111 E-mail:[email protected]
Website:www.holux.com.tw
2
1. Main Feature
Build on high performance SiRF StarIII chipset.
Average Cold Start time and under 45 seconds.
Low power consumption
20 channels “All-in-View” tracking.
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”x0.27”(25.4x25.4x7mm) 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 RTCM SC-104 DGPS and WAAS /EGNOS Demodulator
Built-in a lithium battery make GPS fast positioning
2. Technical Specifications
2.1. Electrical Characteristics
2.1.1 General
1). Frequency
：
L1, 1575.42 MHz
。
2). C/A code
：
1.023 MHz chip rate
。
3). Channels
：
20
。
2.1.2 Accuracy (Open Sky)
1). Position
：
10 meters, 2D RMS
。
2). 7 meters 2D RMS, WAAS corrected
。
3). 1-5 meters, DGPS corrected
。
