IEC 60728-4-2000
电视和声音信号用电缆分配系统 第4部分:无源同轴宽带分配设备已作废

Cabled distribution systems for television and sound signals - Part 4: Passive coaxial wideband distribution equipment

标准号

IEC 60728-4-2000

发布日期

2000年10月

实施日期

废止日期

2007-08

中国标准分类号

K13

国际标准分类号

33.060.40

发布单位

IX-IEC

代替标准

IEC 60728-4-2007

适用范围

This part of IEC 60728 lays down the measuring methods, performance requirements and data publication requirements for passive coaxial wideband distribution equipment of cabled distribution systems for television and sound signals. In addition, it introduces minimum requirements defining quality (Q) grade(s). This standard applies to system outlets, splitters and subscriber taps, and passive one- and two-port devices comprising filters, attenuators, equalizers, galvanic isolators, power injectors, cable splices, terminating resistors and transfer points, but excluding coaxial cables. It covers the frequency range 5 MHz to 3 000 MHz. NOTE The upper limit of 3 000 MHz is an example but not a strict value. The frequency range or ranges over which the equipment is specified should be published. All requirements and published data are understood as guaranteed values within the specified frequency range and in well-matched conditions. For passive equipment of quality grades other than mentioned in the introduction, manufacturers should specify minimum values for - return loss, - isolation, - directivity, using the relevant measurement methods and the presentation of table 1.

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