The document is a data guide for the R4 Series GPS receiver module, describing the features, applications, ordering information, electrical specifications, pin assignments, GPS overview, CGEE, TTFF, module description, backup battery, power supply requirements, 1PPS output, antenna considerations, power control, protocols, interfacing with NMEA messages, typical applications, master development system, board layout guidelines, production guidelines, etc.
The Linx R4 Series GPS Receiver Module is a self-contained, high-performance unit based on the SiRF Star IV chipset. It features exceptional sensitivity capable of acquiring up to 48 satellites simultaneously in dense foliage or urban canyons while maintaining very low power consumption for battery-powered applications.
The module requires no programming or additional RF components (except an antenna) and supports standard NMEA 0183 and SiRF Binary protocols. It includes features such as a backup battery, 1PPS output, CGEE support for faster cold starts, and is housed in a compact surface-mount package compatible with automated assembly.
| Chipset | SiRF Star IV, GSD4e ROM |
|---|---|
| Channels | 48 channels |
| Receiver Sensitivity (Tracking) | -160 dBm |
| Cold Start Time | 32 s |
| Hot Start (Open Sky) Acquisition Time | 1 s |
| Position Accuracy (Autonomous) | 2.5 m |
No, the module requires no programming or additional RF components (except an antenna) to form a complete GPS solution.
The module supports NMEA 0183 ver 3.0 and SiRF Binary protocols.
The operating temperature range is -40 to +85 ºC.