Product Summary

The GR-87 is a on chip 1Mb SRAM. Dual TTL level serial ports with one for GPS receiver command message interface, another one for RTCM-104 DGPS input.

Parametrics

Characteristics: (1)Frequency：L1, 1575.42 MHz; (2)C/A code：1.023 MHz chip rate; (3)Channels：20(according to SiRFs spec.); (4)Position：10 meters, 2D RMS; (5)7 meters 2D RMS, WAAS corrected; (6)1-5 meters, DGPS corrected.

Features

Features: (1)Build on high performance SiRF GSC3f/LP chipset; (2)Average Cold Start time and under 42 seconds; (3)Low power consumption; (4)20 channels All-in-View tracking; (5)200,000+ effective correlators for fast TTFF and high sensitivity acquisitions; (6)Integrated ARM7TDMI CPU with software engineering services and available for embedded customer defined applications; (7)On chip 1Mb SRAM; (8)Dual TTL level serial ports with one for GPS receiver command message; (9)interface, another one for RTCM-104 DGPS input; (10)Compact Board Size 25.4x25.4x7mm for easy integration into hand-held device; (11)Reacquisition Time 0.1 seconds; (12)Support Standard NMEA-0183 and SiRF Binary protocol; (13)Support Accurate 1PPS output signal aligned with GPS Timing; (14)Multi-path Mitigation Hardware; (15)On-board WAAS /EGNOS Demodulator; (16)Built-in a lithium battery make GPS fast positioning.

Diagrams