本标准描述了一个简单的接口，通过该接口，电视设备可以报告内部故障和输入信号故障的发生。它适用于所有电视设备，从最简单的有源设备到最复杂的设备。接口由一个独立的闭合组成，它可以呈现三种状态之一:打开、关闭或脉冲。这些信号分别表示报告设备正常、检测到内部故障或检测到输入信号故障。故障发生数据可通过多种方式从符合本标准的设备收集，从简单的“照明灯到故障”汇总报警方案到计算机化测井系统。 虽然此类系统的完整规范超出了本标准的范围，但附录a中给出了一种可能的实施方案的概述。

This standard describes a simple interface over which television equipment can report the occurrence of internal failures and faults in incoming signals. It is intended for use in all television equipment, from the simplest active devices to the most complex.The interface consists of an isolated closure which can assume one of three states: open, closed, or pulsing. These respectively signal that the reporting device is okay, has detected an internal fault, or is detecting incoming signal faults. Fault occurrence data may be collected from equipment complying with this standard by several means, ranging from simple "follow the lights to the trouble" summary alarm schemes to computerized logging systems. While full specification of such systems is beyond the scope of this standard, a general outline of one possible implementation is given in annex A.