DHC──2型多功能数字时号钟

DHC-2 TYPE DIGITAL HOUR MARK CLOCK WITH MULTIFUNCTIONS

本文介绍的多功能数字时号钟（ＤｉｇｉｔａｌＨｏｕｒＭａｒｋＣｌｏｃｋ简称ＤＨＣ）消除了ＳＹ２石英钟机械触点的缺陷，具有市电变化范围宽，抗干扰性能强，提供脉宽按需可调的时号。故障时可自动切断时号输出，确保不丢记录，各项保护、报警电路完善，还能远距离监听记录器运行情况。

The digital hour mark clock with multifunctions(DHC) introduced in this paper has removed the SY2's week points of mechanical contact,having strong disturbance-resistance with wide range of commercial power changes, providing adjustable hour marks. The DHC-2 can cut hour mark output automatically when trouble happens which guarantees constant recording. The clock with complete protection and warning circuit can detect the drum movement by tele-technique.