CN202916347U - Insertion loss test device of filtering and shielding integrated assembly - Google Patents
Insertion loss test device of filtering and shielding integrated assembly Download PDFInfo
- Publication number
- CN202916347U CN202916347U CN 201220551076 CN201220551076U CN202916347U CN 202916347 U CN202916347 U CN 202916347U CN 201220551076 CN201220551076 CN 201220551076 CN 201220551076 U CN201220551076 U CN 201220551076U CN 202916347 U CN202916347 U CN 202916347U
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- insertion loss
- filtering
- shielding
- integral component
- screened room
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Abstract
The utility model relates to the technical field of electronic tests and insertion loss tests, and discloses an insertion loss test device of a filtering and shielding integrated assembly. The insertion loss test device of a filtering and shielding integrated assembly at least comprises a special adapter plate, a test clamp, a signal source, a spectrum analyzer, a coaxial cable and a shielding room. The special adapter plate is in lap joint and fixation with a mask of the shielding room, and a metal wire mesh liner is further installed at the lap joint position. The signal source is arranged outside the shielding room, the spectrum analyzer is arranged inside the shielding room, the signal source and the spectrum analyzer are in conduction through the coaxial cable, and the coaxial cable passes through the special adapter plate and the mask. The shielding room is grounded independently; and the insertion loss test is performed according to three steps, including the direct conduction value measuring step, the frequency point post-filtering receiving value measuring step and the insertion loss calculation step. According to the method, the insertion loss of the filtering and shielding integrated assembly is acquired by subtracting the frequency point post-filtering receiving value from the direct conduction value, so advantages of high accuracy and good universality can be realized.
Description
Technical field
The utility model relates to Electronic Testing and Analysis of Test Technology for Insertion Loss field, is the insertion loss proving installation of filtering shielding integral component.
Background technology
In recent years, in the electromagnetic compatibility field, anti-electromagnetic interference performance for product requires day by day to increase, this is so that the electromagnetic interference (EMI) inhibition Capability Requirement of product is also more strict, and determine that its anti-electromagnetic interference capability often depends on the filter capacity of the outer line cable of equipment and to the shield effectiveness of cavity, so the filtering shielding integral component that shielding and filtering are melted as the whole body has shown very excellent performance characteristics, and very widely market outlook are arranged.But how to verify the insertion loss of a filtering shielding integral component, also do not have the complete test of a cover, therefore verify the insertion loss of filtering shielding integral component in the urgent need to a kind of insertion loss proving installation of filtering shielding integral component.
Summary of the invention
The purpose of this utility model provides a kind of insertion loss proving installation of filtering shielding integral component, is applicable to any filtering shielding integral component that is installed on panel, interface, the isolated chambers end face.
The technical solution of the utility model is the insertion loss proving installation of filtering shielding integral component, its equipment comprises special-purpose card extender, test clip, signal source, frequency spectrograph, coaxial cable and screened room at least, the illiteracy plate overlap joint of special-purpose card extender and screened room is fixing, and installs wire mesh pad additional in lap-joint; Signal source is arranged on outside the screened room, and frequency spectrograph is arranged in the screened room, and coaxial cable is with signal source and frequency spectrograph conducting, and coaxial cable passes special-purpose card extender and covers plate; Screened room connects separately the earth.
Described special-purpose card extender is the card extender according to the illiteracy plate of screened room and the making of filtering shielding integral component.
Described test clip comprises the heart yearn folder and draws folder that it is take the N-type radio frequency connector as pedestal, behind center pit and crust extension line, at the other end weld metal clipping one-tenth of lead-in wire.
Described signal source is function signal generator, modulation signal generator or broadband signal source.
Described frequency spectrograph is the standard device that satisfies 9KHZ to 40GHZ test frequency range.
Described coaxial cable is the coaxial cable that satisfies 9KHZ to 40GHZ test frequency range.
Described screened room is electrical measurement screened room, shielded anechoic chamber or semi-anechoic chamber.
Characteristics of the present utility model are by using straight-through value to deduct reception value after the filtering of each frequency, draw the insertion loss of filtering shielding integral component, and the method precision height, versatility are good.
Description of drawings
Below in conjunction with embodiment the utility model is further described:
Fig. 1 is when shielding integral component without filtering, the structural representation of the insertion loss proving installation of filtering shielding integral component;
Fig. 2 is when filtering shielding integral component is arranged, the structural representation of the insertion loss proving installation of filtering shielding integral component;
Fig. 3 is the test clip structural representation.
Among the figure: 1, special-purpose card extender; 2, test clip; 3, signal source; 4, frequency spectrograph; 5, coaxial cable; 6, screened room; 7, filtering shielding integral component; 8, cover plate.
Embodiment
Embodiment 1
The insertion loss proving installation of filtering shielding integral component, its equipment comprises special-purpose card extender 1, test clip 2, signal source 3, frequency spectrograph 4, coaxial cable 5 and screened room 6 at least, special-purpose card extender 1 is fixing with illiteracy plate 8 overlap joints of screened room 6, and installs wire mesh pad additional in lap-joint; Signal source 3 is arranged on outside the screened room 6, and frequency spectrograph 4 is arranged in the screened room 6, and coaxial cable 5 is with signal source 3 and frequency spectrograph 4 conductings, and coaxial cable 5 passes special-purpose card extender 1 and covers plate 8; Screened room 6 connects separately the earth.
Embodiment 2
The insertion loss proving installation of filtering shielding integral component, its equipment comprises special-purpose card extender 1, test clip 2, signal source 3, frequency spectrograph 4, coaxial cable 5 and screened room 6 at least.
As shown in Figure 1, screened room 6 is electrical measurement screened room, shielded anechoic chamber or semi-anechoic chamber, and screened room 6 connects separately the earth.The setting of screened room 6 is for complete Isolation input, output signal, makes the test result that obtains true.
Special-purpose card extender 1 is that special-purpose card extender 1 is fixing with illiteracy plate 8 overlap joints of screened room 6 according to the illiteracy plate 8 of screened room 6 and the card extender of filtering shielding integral component 7 making, and installs wire mesh pad additional in lap-joint.Effectively filtering is shielded integral component and screened room (6) by this connected mode and form a whole, finish the insertion loss test.
Frequency spectrograph 4 is the standard devices that satisfy 9KHZ to 40GHZ test frequency range, is arranged in the screened room 6.
After setting above each parts, carry out the test of insertion loss, the insertion loss proving installation of this filtering shielding integral component carries out according to following step:
Step 1 is surveyed straight-through value; Signal source 3 transmits, and signal is transmitted by coaxial cable 5, directly leads directly to test by the adaptor connector on screened room 6 walls, and namely in the situation without filtering between signal source 3 and the frequency spectrograph 4, the value that frequency spectrograph 4 records is straight-through value.
Step 2 as shown in Figure 2, is surveyed reception value after the filtering of each frequency; Filtering is shielded integral component 7 be fixedly mounted on the special-purpose card extender 1, conductive gasket is selected whether to install additional according to actual conditions by lap-joint, coaxial cable 5 and 7 conductings of filtering shielding integral component; The heart yearn folder of test clip 2 is arranged in the screened room 6, and clamps the loop lead-in wire of coaxial cable 5, and the folder of drawing of test clip 2 is arranged on outside the screened room 6, and clamps the PE ground end of filtering shielding integral component 7; Test after setting, signal source 3 transmits, and the signal transmission reaches frequency spectrograph 4 after shielding integral component 7 through filtering, and frequency spectrograph 4 is measured the reception value behind each frequency process filtering shielding integral component 7.
As shown in Figure 3, test clip 2 comprises the heart yearn folder and draws folder that it is take the N-type radio frequency connector as pedestal, behind center pit and crust extension line, at the other end weld metal clipping one-tenth of lead-in wire.
The insertion loss proving installation of this filtering shielding integral component draws the insertion loss of filtering shielding integral component 7 by using straight-through value to deduct reception value after the filtering of each frequency, and the method precision height, versatility are good.
The parts that present embodiment is not described in detail and structure belong to well-known components and common structure or the conventional means of the industry, here not one by one narration.
Claims (7)
1. filtering shields the insertion loss proving installation of integral component, which comprises at least special-purpose card extender (1), test clip (2), signal source (3), frequency spectrograph (4), coaxial cable (5) and screened room (6), special-purpose card extender (1) is fixing with illiteracy plate (8) overlap joint of screened room (6), and installs wire mesh pad additional in lap-joint; Signal source (3) is arranged on outside the screened room (6), and frequency spectrograph (4) is arranged in the screened room (6), and coaxial cable (5) is with signal source (3) and frequency spectrograph (4) conducting, and coaxial cable (5) passes special-purpose card extender (1) and covers plate (8); Screened room (6) connects separately the earth.
2. the insertion loss proving installation of the shielding of the filtering described in according to claim 1 integral component is characterized in that: described special-purpose card extender (1) is the card extender of making according to the illiteracy plate (8) of screened room (6) and filtering shielding integral component (7).
3. the insertion loss proving installation of the shielding of the filtering described in according to claim 1 integral component, it is characterized in that: described test clip (2) comprises the heart yearn folder and draws folder, it is as pedestal take the N-type radio frequency connector, behind center pit and crust extension line, at the other end weld metal clipping one-tenth of lead-in wire.
4. the insertion loss proving installation of the shielding of the filtering described in according to claim 1 integral component, it is characterized in that: described signal source (3) is function signal generator, modulation signal generator or broadband signal source.
5. the insertion loss proving installation of the shielding of the filtering described in according to claim 1 integral component, it is characterized in that: described frequency spectrograph (4) is the standard device that satisfies 9KHZ to 40GHZ test frequency range.
6. the insertion loss proving installation of the shielding of the filtering described in according to claim 1 integral component, it is characterized in that: described coaxial cable (5) is the coaxial cable that satisfies 9KHZ to 40GHZ test frequency range.
7. the insertion loss proving installation of the shielding of the filtering described in according to claim 1 integral component, it is characterized in that: described screened room (6) is electrical measurement screened room, shielded anechoic chamber or semi-anechoic chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220551076 CN202916347U (en) | 2012-10-25 | 2012-10-25 | Insertion loss test device of filtering and shielding integrated assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220551076 CN202916347U (en) | 2012-10-25 | 2012-10-25 | Insertion loss test device of filtering and shielding integrated assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202916347U true CN202916347U (en) | 2013-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220551076 Expired - Lifetime CN202916347U (en) | 2012-10-25 | 2012-10-25 | Insertion loss test device of filtering and shielding integrated assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202916347U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104052554A (en) * | 2014-06-03 | 2014-09-17 | 杭州紫光网络技术有限公司 | Insertion loss testing system of indoor distribution system |
| CN104991126A (en) * | 2015-07-08 | 2015-10-21 | 深圳振华富电子有限公司 | Test fixture of network transformer |
-
2012
- 2012-10-25 CN CN 201220551076 patent/CN202916347U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104052554A (en) * | 2014-06-03 | 2014-09-17 | 杭州紫光网络技术有限公司 | Insertion loss testing system of indoor distribution system |
| CN104052554B (en) * | 2014-06-03 | 2016-01-20 | 杭州紫光网络技术有限公司 | A kind of insertion loss test macro of indoor distributed system |
| CN104991126A (en) * | 2015-07-08 | 2015-10-21 | 深圳振华富电子有限公司 | Test fixture of network transformer |
| CN104991126B (en) * | 2015-07-08 | 2018-03-06 | 深圳振华富电子有限公司 | The measurement jig of network transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130501 |