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ASTM D 1245-1984 用化学显微镜作水沉积物的检验

上一篇: ISO 6571-1984 香料、调味品和香草挥发油含量的测定
下一篇: ANSI A250.2-1984 隔热钢门系统的术语

标准名称：	建筑电气安装工程质量检验评定标准GBJ303-88
英文名称：	Quality inspection and assessment of electric equipment installation
中标分类：	工程建设 >> 工业设备安装工程 >> 电气设备安装工程
替代情况：	被GB 50303-2002代替
发布日期：	1988-11-05
实施日期：	1989-09-01
首发日期：	1900-01-01
作废日期：	2002-06-01
出版日期：	1900-01-01
页数：	21页

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Product Code:SAE J1113/25
Title:Electromagnetic Compatibility Measurement Procedure for Vehicle Components--Immunity to Radiated Electromagnetic Fields, 10 kZz to 500 MNz--Tri-Plate Line Method
Issuing Committee:Electromagnetic Compatibility (Emc) Standards
Scope: This procedure covers the recommended testing techniques for the determination of electric field immunity of an automotive electronic device. This technique uses a tri-plate line (TPL) from 10 kHz to 500 MHz and is limited to components which have a maximum height of equal to or less than 1/3 the height between the driven element and the outer, grounded plates. A tri-plate line is a variation of a TEM cell design which is constructed without sides to the cell. The TPL sets up a region of uniform electric and magnetic fields between the center septum and the top and bottom grounded plates. One advantage to the use of the TPL as opposed to a TEM cell is that the construction permits large devices to be placed within the cell with their associated cables attached without special feed through ports or adapters as required for a TEM cell. The lack of sides which would be found in a TEM cell permits easy routing of the cables to and from the equipment under test (EUT). The TPL does not have a serious problem with fields reflected from the side wall as does the TEM cell due to the lack of side walls. This permits its use to frequencies above twice the normal useful frequency for a TEM cell of the same physical size. However, the lack of side walls also means that the TPL must be used within a shielded room to prevent radiation from the TPL from interfering with near-by electronic devices. The possibility of room resonances and reflected waves distorting the measurements must not be ignored. This is discussed in greater detail in the body of this document.

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