NEBS认证——设备DC端口的性能要求

NEBS认证对设备DC端口的性能要求是GR-1089-CORE Issue 4，June2006版本中新增加的部分。这部分标准适用于由共用DC电源供电的通信设备，认证要求主要参考ANSIT1．315：2001《电信环境中DC电源供电设备的电压等级》。NEBS认证对DC端口的性能要求主要有四个方面的内容：一是设备DC端口最大和最小工作电压范围；二是设备Dc端口抗瞬变高压和低压的能力；三是设备DC端口差模噪声发射；最后是设备DC端口差模噪声抗扰度要求。

Criteria for DC Port of Equipment in the NEBS Authentication

The criteria in this thesis are the new requirements of NEBS , and apply to the telecommunications equipment that is powered from a shared DC power plant The criteria are adopted fl＇om ANSI T1.315：2001 Voltage Levels for DC-Powered Equipmerit Used in Telecommunications Environment. This thesis mainly includes four parts. The first is the minimum and maximum input voltages of the DC power port; the second is the immunity to the undervohage and overvohage transient for the DC power port; the third is the conducted differential-mode noise emission from the DC power port, and the last is that the equipment should operate and should meet its applicable requirement when its DC power port is subjected to conducted differential-mode noise.