This document describes the features and characteristics of the TOPCON GNSS receiver GB-1000, including options for dual frequency, GLONASS, RTK, AMR, and co-tracking. The receiver is equipped with a graphic display LCD and operation keys, allowing for various measurements and status checks. It has a built-in memory for data storage and can be downloaded via USB or serial data interface. Additionally, the document provides general operating precautions such as waterproof and dustproof measures, fixing the instrument on a tripod, installing the base, shockproofing, and checking the battery and memory.