ET-314 is a compact, high performance, and low power consumption GPS engine board. It uses SiRF Star III chipset which can track up to 20 satellites at a time and perform fast TTFF in weak signal environments. ET-314 is suitable for automotive navigation, personal positioning, fleet management, and marine navigation applications.
This manual describes the GlobalSat ET-314 GPS engine board, a compact high‑performance GPS module that uses the SiRF Star II chipset. It outlines product features, technical specifications, and recommended hardware connections for automotive, marine, and other positioning applications.
Detailed sections cover pin definitions, power and backup battery requirements, antenna routing, serial interface setup, and command reference formats, helping developers integrate the board into their designs and achieve fast time‑to‑first‑fix performance.
| Chipset | SiRF Star II |
|---|---|
| Frequency | L1 1575.42 MHz |
| Tracking Sensitivity | -159 dBm |
| Number of Channels | 20 |
| Flash Memory | 4 Mbit |
| Baud Rate | 4,800 to 57,600 bps (adjustable) |
| Update Rate | 1 Hz |
| Power Supply | 3.3 V DC ±5 % |
| Power Consumption (Acquisition) | 42 mA |
| Power Consumption (Tracking) | 25 mA |
| Dimensions | 25.4 mm × 25.4 mm × 3.3 mm |
| Maximum Altitude | < 18,000 m |
| Maximum Velocity | < 515 m/s |
The ET-314 has a tracking sensitivity of –159 dBm.
It can track up to 20 channels at the same time.
During acquisition the board draws about 42 mA.
The board measures 25.4 mm × 25.4 mm × 3.3 mm.