This document is the user manual for the Globalsat Technology Corporation GPS Engine Board ET-312
This manual describes the Globalsat ET-312 GPS Engine Board, a compact module that implements the SiRF Star III chipset for GPS positioning. It includes the board's electrical specifications, pin functions, and recommended layout drawings.
Key sections cover the technical specifications, detailed pin assignment table, block diagram, reference design, and recommended PCB layout and placement drawings, helping developers integrate the board into their systems. This manual is written in Chinese.
| Chipset | SiRF Star III |
|---|---|
| Frequency | L1, 1575.42 MHz |
| Channels | 20 channel all‑in‑view tracking |
| Sensitivity | -159 dBm |
| Power input | 3.3 V ±5 % DC |
| Power consumption (continuous) | 80 mA |
| Dimensions | 27.9 mm × 20 mm × 2.9 mm |
| Baud rate | 4,800 to 57,600 bps (adjustable) |
| Antenna type | Active or passive |
| Operating temperature | -40 °C to +85 °C |
The board requires a 3.3 V ±5 % DC input.
It supports 20 channels with all‑in‑view tracking.
The device operates from –40 °C up to +85 °C.
Both active and passive antennas are supported.