Standard No.:	GB/T 18121-2000
English Name:	Audio visual, video and television equipment and systems - Video tape leader and trailer for education and training applications
Chinese Name:	视听、视频及电视设备和系统教育和训练用录像磁带的引带和尾带
Chinese Classification:	M71    Recording equipment
Professional Classification:	GB    National Standard
ICS Classification:	33.160.40 33.160.40    Video systems 33.160.40
Issued by:	AQSIQ
Issued on:	2000-6-7
Implemented on:	2000-10-1
Status:	abolished
Abolished on:	2017-12-15
Language:	English
File Format:	PDF
Word Count:	3500 words
Price(USD):	100.0
Delivery:	via email in 1~3 business day

本标准规定了视频记录的引带和尾带上记录的最低要求，以帮助用户在已录节目开始之前调节设备至最佳性能。本标准还规定了已录节目前后应记录的音频和视频信息，以保证正常识别节目，并对节目进行正确的插入和切出。记录在这些引带和尾带上的信号不是作为测量系统性能用的测试信号。