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- Last added
- 2026-09-29
Featured Techtotop manuals
Techtotop D303-3 High-Precision Navigation Module User Manual
The D303-3 is a compact, 24‑pin navigation module that supports BDS B1, GPS L1 and GLONASS L1 frequencies. It integrates a high‑precision SOC baseband, RF front‑end, power‑management and LNA+SAW, providing high sensitivity and low power consumption for vehicle, marine and handheld positioning applications.
The manual details the module’s hardware interfaces (power, antenna, reset, 1PPS, UART), software protocol, mechanical dimensions, electrical characteristics, recommended PCB design, and ordering information. Safety notes include static protection and proper soldering procedures. This manual is written in Chinese.
Covers: Function Description · Module Interface Description · Design Features · Electrical and Temperature Characteristics · Precautions · Ordering Information and Identification Rules
Latest Techtotop manuals
Techtotop D303-3 High-Precision Navigation Module User Manual
User Manual 18 pages · 901 KB · ZHUser manual for the Techtotop D303-3 high‑precision GNSS navigation module, covering features, interfaces, specifications and usage guidelines.
Which document do I need?
User Manual
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in Techtotop manuals
What is the default UART baud rate for the D303-3 module?
The default UART baud rate is 9600 bps.
From: Techtotop D303-3 High-Precision Navigation Module User Manual
Which GNSS constellations does the D303-3 support?
It supports BDS B1, GPS L1 and GLONASS L1 frequencies.
From: Techtotop D303-3 High-Precision Navigation Module User Manual