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Continuously variable length test apparatus for the measurement of filter rejection characteristics

A technology for suppressing characteristics and test devices, applied in the direction of measuring devices, measuring electrical variables, shielding devices, etc., can solve the problems of inability to achieve length and continuous changes, achieve flexible design and reduce test costs

Active Publication Date: 2018-01-12
上海电器设备检测所有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the lengths of several test devices that can be obtained by this test device are fixed, and continuous changes in length cannot be achieved.

Method used

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  • Continuously variable length test apparatus for the measurement of filter rejection characteristics
  • Continuously variable length test apparatus for the measurement of filter rejection characteristics
  • Continuously variable length test apparatus for the measurement of filter rejection characteristics

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Embodiment Construction

[0026] In order to make the present invention more comprehensible, preferred embodiments are described in detail below with accompanying drawings.

[0027] Such as image 3 As shown, it is a schematic diagram of a test device whose length can be continuously changed for measuring the insertion loss of a general-purpose filter. The test device whose length can be continuously changed includes a body 5 and is equipped with 4 internal connection terminals one and two external terminals. The movable shielding box 1 6 on the left side of the connecting terminal 1 13 is installed with 4 internal connecting terminals 2 11 and the detachable shielding box 2 7 on the right side of the two external connecting terminals 2 . Internal connection terminal 1, external connection terminal 1 13, internal connection terminal 2 11 and external connection terminal 2 are coaxial radio frequency connector N female and SMA female. The body 5, the first shielding box 6 and the second shielding box 7...

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Abstract

The invention provides a test device with continuously variable length for measuring filter suppression characteristics, which includes a body with a cover, and is characterized in that detachable shielding boxes and shielding boxes are respectively arranged at the left and right ends of the body. Box 2, shielding box 1 is slidably matched with the body so that the position of the shielding box 1 can be continuously adjusted along the length direction of the body, and the shielding box 2 is detachably fixed on the end wall of the body. Compared with the prior art, the beneficial effect of the present invention is that the length of the test device of the present invention is continuously adjustable, and the length of the test device meeting standard requirements can be set for filters of different lengths.

Description

technical field [0001] The invention relates to a continuously variable test device for measuring the insertion loss of a general filter, which is used for testing the insertion loss of a passive EMC general filter. Background technique [0002] The latest standard for the measurement method of passive EMC filter suppression characteristics is GB / T 7343-201X "Measurement method of passive EMC filter suppression characteristics" (to be released) and the international standard CISPR 17-2011 "Methods of measurement of the suppression characteristics of passive EMC filtering devices", the measurement method parameters of the insertion loss of passive EMC general filter devices are measured in accordance with the requirements of Chapter 5, and the measurement arrangement is shown in figure 1 , including a signal generator 1 , a measuring receiver 2 , a test device 3 and a filter 4 to be tested. [0003] According to the requirements of the standard, when measuring the insertion ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R27/26G01R1/18
Inventor 邓莉莉刘媛张望远
Owner 上海电器设备检测所有限公司