Caterpillar DataView is a portable diagnostic tool that connects to a PC and allows technicians to view sensor data from Caterpillar equipment and products. It consists of portable hardware with inputs that connect to various Caterpillar sensors, and software on the PC for sensor setup, live data viewing, data logging, and graphing capabilities. DataView supports common Caterpillar sensors for measurements like pressure, temperature, speed, and can replace multiple individual diagnostic tools with a single device.