DL/T 1944-2018 in English

This document specifies the technical requirements for handheld optical digital signal testing devices used in smart substations. It covers aspects such as functional performance, safety requirements, environmental adaptability, and testing methods. The standard provides guidelines for the design, manufacture, and verification of these devices to ensure their reliability and compatibility within smart substation environments. It also outlines the necessary procedures for calibration, operation, and maintenance. The scope includes the application of these devices in various testing scenarios related to communication and protection systems in smart substations. The standard aims to promote uniformity and interoperability among different manufacturers and systems by establishing consistent technical criteria and performance benchmarks.