Quartz crystal units for frequency control and selection. Part 1 : Standard values and test conditions

This document represents a technical amendment published by an international organization specializing in the standardization of electrical, electronic, and related technologies. It serves to modify the foundational specifications originally established for a particular series of devices used in medical and general electrical applications. The content focuses on introducing specific changes to ensure continued safety and performance consistency within the relevant industry sectors. This update addresses technical requirements related to electrical safety, performance testing, and operational parameters for equipment falling under this category. It is designed to harmonize national practices with international expectations by incorporating revised methodologies or updated limits where necessary. The amendment complements the existing base standard by clarifying existing provisions or adding new requirements based on technological advancements or accumulated field experience. It provides manufacturers and testing bodies with precise guidelines to maintain compliance with current international norms for this type of equipment. The document acts as a critical reference for ensuring that products meet the agreed-upon safety and functional criteria across global markets.