GB/T 14854.2-1993 Performance requirements for broadcast video tapes
Basic Information
Standard ID:
GB/T 14854.2-1993
Standard Name: Performance requirements for broadcast video tapes
Chinese Name:
广播录像磁带性能要求
Standard category:National Standard (GB)
state:in force
Date of Release1993-01-02
Date of Implementation:1994-09-01
standard classification number
Standard ICS number:Telecommunications, audio and video technology>>Audio, video and audiovisual engineering>>33.160.40 Video systems
Standard Classification Number:Chemicals>>Information Chemicals>>G83 Magnetic Recording Materials
associated standards
Publication information
publishing house:China Standards Press
Publication date:1994-09-01
other information
Release date:1993-12-30
Review date:2004-10-14
drafter:Chen Chengquan
Drafting unit:Standardization Planning Institute of the Ministry of Radio, Film and Television
Focal point unit:National Radio and Television Standardization Technical Committee
Proposing unit:Radio, Film and Television Department
Publishing department:State Bureau of Technical Supervision
competent authority:State Administration of Radio, Film and Television
Introduction to standards:
This standard specifies the performance of video tapes for broadcasting. This standard applies to video tapes with a width of 25.4 mm and 19.00 mm. GB/T 14854.2-1993 Performance requirements for broadcast video tapes GB/T14854.2-1993 Standard download decompression password: www.bzxz.net
Some standard content:
National Standard of the People's Republic of China
Characteristic requirements for broadcast video tape
Characteristic requirements for broadcast video tape 1 Subject content and applicable scope
This standard specifies the performance of broadcast video tapes. This standard applies to video tapes with a width of 25.4 mm and 19.00 mm. Performance requirements for broadcast video tapes
The performance requirements for broadcast video tapes are shown in Table 1. Table 1
4. Residual elongation
5. Interlayer adhesion
6. Transverse bending deformation
Longitudinal bending deformation
8. Surface voltage
9. Optimum video current ratio
10. RF playback output, sensitivity
11. RF playback output sensitivity non-uniformity
12. Image brightness signal-to-noise ratio
13. Image chromaticity signal-to-noise ratio
14. Dropout
15. Stop image characteristics
Approved by the State Technical Supervision Bureau on December 30, 1993Magnetic layer
pieces/minute
GB/T 14854.2—93
25.4mm tape
25.4+8.10
See Table 2
1000000
19. 00mm tape
19.00+0.03
See Table 2
Implemented on September 1, 1994
16. Sound relative sensitivity*
17. Sound relative sensitivity non-uniformity
18. Sound amplitude-frequency characteristics*
19. Sound distortion
20. Sound signal-to-noise ratio
21. Copy effect
22. Demagnetization degree
GB/T 14854.2--93
Continued Table 1
25.4nmim tape
19.00mtm tape
The * in the table is compared with the reference value of the reference tape. This standard stipulates that the group average value in the sampling of this model of products shall be taken as the reference. The absolute value of the signal-to-noise ratio of ear brightness and chromaticity (including amplitude modulation and phase modulation) shall not be less than 46dB for 25.4mm tape and shall not be less than 47dB for 19.00mm tape. Table 2
Nominal recording time, min
Additional instructions:
This standard is proposed by the Ministry of Radio, Film and Television
25.4mm tapebzxz.net
This standard is drafted by the Standardization Planning Institute of the Ministry of Radio, Film and Television. The main drafter of this standard is Chen Chengquan
Degree, m
19.00mm tape
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