Holux GR-87 Specification
GPS
Product series
With HOLUX, You never lose the way!
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:info@holux.com.tw Website:www.holux.com.tw
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GR-87 GPS Receiver Module
1. Main Feature
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Build on high performance SiRF StarIII chipset.
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Average Cold Start time and under 45 seconds.
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Low power consumption
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20 channels “All-in-View” tracking.
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200,000+ effective correlators for fast TTFF and high sensitivity
acquisitions
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Integrated ARM7TDMI CPU with software engineering services and
available for embedded customer defined applications.
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On chip 1Mb SRAM.
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Dual TTL level serial ports with one for GPS receiver command message
interface, another one for RTCM-104 DGPS input.
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Compact Board Size 1”x1”x0.27”(25.4x25.4x7mm) for easy integration
into hand-held device.
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Reacquisition Time 0.1 seconds
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Support Standard NMEA-0183 and SiRF Binary protocol
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Support Accurate 1PPS Output Signal Aligned with GPS Timing
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Multi-path Mitigation Hardware
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On-board RTCM SC-104 DGPS and WAAS /EGNOS Demodulator
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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.