CN215575379U - Radio frequency test box - Google Patents

Radio frequency test box Download PDF

Info

Publication number
CN215575379U
CN215575379U CN202121115278.5U CN202121115278U CN215575379U CN 215575379 U CN215575379 U CN 215575379U CN 202121115278 U CN202121115278 U CN 202121115278U CN 215575379 U CN215575379 U CN 215575379U
Authority
CN
China
Prior art keywords
radio frequency
opening
test box
housing
frequency test
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202121115278.5U
Other languages
Chinese (zh)
Inventor
吴加宏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fibocom Wireless Inc
Original Assignee
Fibocom Wireless Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fibocom Wireless Inc filed Critical Fibocom Wireless Inc
Priority to CN202121115278.5U priority Critical patent/CN215575379U/en
Application granted granted Critical
Publication of CN215575379U publication Critical patent/CN215575379U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Casings For Electric Apparatus (AREA)

Abstract

The application relates to a radio frequency test box, and relates to the technical field of radio frequency tests. The radio frequency test box comprises a shell, a cover body and a sealing element, wherein the shell is provided with an opening, the cover body is matched with the opening, the cover body comprises a pushing part and a guiding part, the guiding part guides the pushing part to move along the inner wall of the opening, and the sealing element is assembled between the cover body and the opening and pushes the sealing element by the cover body, so that the shell is elastically sealed. This application embodiment is at the in-process that removes the lid, when pushing away to the piece, because set up the guide and lead, therefore push away to the piece at the removal in-process more steady, and can not with the opening inner wall between produce the gap to make the casing have better sealing performance and interference killing feature, and then improve the accuracy of radio frequency test, when not using, avoid dust and impurity to get into, have higher practicality.

Description

Radio frequency test box
Technical Field
The application relates to the technical field of radio frequency testing, in particular to a radio frequency testing box.
Background
Radio frequency is a short for high-frequency alternating current variable electromagnetic wave, and is widely used in the fields of wireless communication, electronic identification and the like, and because the space environment is full of electromagnetic waves, when a radio frequency terminal electronic product is tested, in order to isolate the radio frequency terminal electronic product from external electromagnetic wave interference signals, avoid influencing a test result, and smoothly test the radio frequency terminal electronic product, the radio frequency terminal electronic product is generally placed into a radio frequency test box with an electromagnetic shielding function for testing.
The radio frequency test box in the related art has poor sealing performance, and when the radio frequency test box is not used, external dust easily falls into the radio frequency test box, so that the anti-interference performance of the radio frequency detection head and the test accuracy are influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that the sealing performance of a radio frequency test box in the related art is poor, the application provides a radio frequency test box capable of improving the sealing performance.
The application provides a radio frequency test box, which comprises a shell, a base and a base, wherein the shell is provided with an opening; the cover body is matched with the opening and comprises a pushing part and a guide part, and the guide part guides the pushing part to move along the inner wall of the opening; and the sealing element is assembled between the cover body and the opening, and the cover body pushes against the sealing element, so that the shell is elastically sealed.
In an embodiment of the present application, the guiding element is connected to a side of the pushing element facing the housing and/or a side facing away from the housing.
In one embodiment of the present application, the guide member includes: the mounting seat is assembled at the stepped groove of the opening, and an installation groove for accommodating the sealing element is formed at the assembly position of the mounting seat and the stepped groove; and the guide rail is connected with the mounting seat and matched with the pushing and abutting piece, so that the guide rail guides the pushing and abutting piece to push and abut against the mounting seat to move along the inner wall of the opening.
In one embodiment of the present application, the inner wall of the opening has a limiting portion; the pushing piece is in threaded connection with the inner wall of the opening, and the limiting part is an internal thread; the pushing piece is connected to the inner wall of the opening in a sliding mode, and the limiting portion is a protrusion.
In one embodiment of the application, the guide rail and the pushing and supporting piece are both of a split structure, and the cross section of the guide rail is a T-shaped surface.
In one embodiment of the present application, a handle is disposed on a side of the cover body facing away from the housing, and the handle is used for lifting the cover body.
In one embodiment of the present application, the housing further comprises a lift assembly, the lift assembly comprising: the lifting rod is arranged in the shell; the motor is connected to the free end of the lifting rod; and the placing disc is connected to the output end of the motor, and the motor drives the placing disc to rotate so as to place the electronic element to be tested.
In one embodiment of the present application, the housing further comprises a radio frequency assembly, the radio frequency assembly comprising: the push rod penetrates through the shell; the box body is connected to one end, positioned in the shell, of the push rod, and is provided with an opening facing the placing disc; and the radio frequency detection head is positioned at the opening in the box body.
In one embodiment of the present application, the housing further comprises a monitoring assembly, the monitoring assembly comprising: the camera is arranged on the inner wall of the shell and faces the placing disc; and the display is arranged on the outer wall of the shell and is electrically connected with the camera so as to monitor the picture of the internal part of the shell in real time.
In one embodiment of the present application, the casing, the mount pad and the inner wall of box all is equipped with the shielding layer.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:
the embodiment of the application provides a radio frequency test box, through pushing away to piece downstream, thereby the lid can extrude the sealing member that is located between lid and the opening, with sealing member elastic seal casing, pushing away the in-process that supports, owing to set up the guide and lead, therefore it is more steady at the removal in-process to push away to piece, and can not and opening inner wall between produce the gap, thereby make the casing have better sealing performance and interference killing feature, and then improve the accuracy of radio frequency test, when not using, avoid dust and impurity to get into, higher practicality has.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a radio frequency test box according to an embodiment of the present disclosure;
FIG. 2 is a cross-sectional view of a radio frequency test box according to an embodiment of the present disclosure;
FIG. 3 is an enlarged view of a detail A of FIG. 2;
fig. 4 is a schematic structural diagram of a lifting assembly of a radio frequency test box according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a radio frequency assembly of a radio frequency test box according to an embodiment of the present application.
Reference numerals:
100. a housing; 200. a cover body; 300. a seal member; 11. an opening; 111. a stepped groove; 112. a through hole; 12. a lifting assembly; 121. a lifting rod; 122. a motor; 123. placing a tray; 13. a radio frequency component; 131. a push rod; 132. a box body; 133. a radio frequency detection head; 14. a monitoring component; 141. a camera; 142. a display; 15. supporting legs; 21. a pushing part; 22. a guide member; 221. a mounting seat; 2211. mounting grooves; 222. a guide rail; 23. a handle.
Detailed Description
In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are one sub-embodiments of the present application, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the related art, radio frequency is a short for high-frequency alternating current variable electromagnetic wave and is widely used in the fields of wireless communication, electronic identification and the like, and since the space environment is full of electromagnetic waves, when a radio frequency terminal electronic product is tested, in order to isolate the radio frequency terminal electronic product from external electromagnetic wave interference signals, avoid the influence on a test result and smoothly test the radio frequency terminal electronic product, the radio frequency terminal electronic product is generally put into a radio frequency test box with an electromagnetic shielding function for testing. The radio frequency test box in the related art has poor sealing performance, and when the radio frequency test box is not used, external dust easily falls into the radio frequency test box, so that the anti-interference performance of the radio frequency detection head and the test accuracy are influenced.
In view of the above problems, the embodiments of the present application provide a radio frequency test box, which includes a housing, a cover, and a sealing member, where the housing is provided with an opening; the cover body is matched with the opening and comprises a pushing part and a guide part, and the guide part guides the pushing part to move along the inner wall of the opening; the sealing element is assembled between the cover body and the opening, and the cover body pushes against the sealing element, so that the shell is elastically sealed.
It should be understood by those skilled in the art that the guiding element in the embodiment of the present application has three implementation manners, one of which is connected to a side of the pushing and supporting element facing the housing, the other of which is connected to a side of the pushing and supporting element facing away from the housing, and the third implementation manner is the most preferable implementation manner, and is not limited herein as long as the guiding is achieved.
For a more particular understanding of the technical idea of the present application, exemplary embodiments are described below with reference to the accompanying drawings:
fig. 1 is a schematic structural diagram of a radio frequency test box according to an embodiment of the present disclosure; FIG. 2 is a cross-sectional view of a radio frequency test box according to an embodiment of the present disclosure; FIG. 3 is an enlarged view of a detail A of FIG. 2; fig. 4 is a schematic structural diagram of a lifting assembly of a radio frequency test box according to an embodiment of the present disclosure; fig. 5 is a schematic structural diagram of a radio frequency assembly of a radio frequency test box according to an embodiment of the present application.
As shown in fig. 1-3, an embodiment of the present application provides a radio frequency test box, which includes a housing 100, a cover 200, and a sealing member 300, wherein the housing 100 is provided with an opening 11; the cover body 200 is adapted to the opening 11, the cover body 200 includes a pushing part 21 and a guiding part 22, and the guiding part 22 guides the pushing part 21 to move along the inner wall of the opening 11; the sealing member 300 is fitted between the cover 200 and the opening 11, and the cover 200 pushes against the sealing member 300, thereby elastically sealing the housing 100.
The embodiment of the application provides a radio frequency test box, thereby push up the sealing member 300 between extrusion lid 200 and the opening 11 downwards through pushing up to 21, thereby realize casing 100's sealed, when pushing up to 21, owing to set up guide 22 and lead, therefore it is more steady at the removal in-process to push up to 21, and can not with opening 11 inner wall between produce the gap, thereby make casing 100 have better sealing performance and interference killing feature, and then improve the accuracy of radio frequency test, when not using, avoid dust and impurity to get into, higher practicality has.
The guide 22 has three implementation manners, one of which is connected to the side of the pushing and supporting part 21 facing the casing 100, the other of which is connected to the side of the pushing and supporting part 21 facing away from the casing 100, and the third of which is both the two implementation manners. All of the three embodiments can enable the guide member 22 to guide the pushing and abutting member 21 to move along the vertical direction on the inner wall of the opening 11, so as to prevent the pushing and abutting member 21 from deviating from the linear track, thereby improving the sealing performance and the interference resistance. Other arrangement modes of the guide member capable of guiding the pushing member 21 also belong to the protection scope of the present application.
For the opening 11, the opening 11 includes a stepped groove 111 and a through hole 112, the stepped groove 111 communicates with one side of the through hole 112 facing the inside of the housing 100, and an inner diameter of the stepped groove 111 is smaller than an inner diameter of the through hole 112, so that the cover 200 can be clamped at the opening 11 and can push against the sealing member 300 to achieve sealing.
In order to prevent the pushing part 21 from moving in a direction away from the housing 100, a limiting part (not shown in the drawings) is disposed inside the opening 11, and the limiting part mainly has the following two forms according to different moving modes of the pushing part 21: when the pushing and supporting piece 21 is rotatably connected to the inner wall of the opening 11, the limiting part is an internal thread with self-locking property, that is, the pushing and supporting piece 21 is provided with an external thread matched with the internal thread, so that the pushing and supporting piece 21 is in threaded connection with the inner wall of the opening 11; when the pushing-against part 21 is slidably connected to the inner wall of the opening 11, the limiting part is a protrusion made of an elastic material, the protrusion is extruded to deform and move downwards in the process that the pushing-against part 21 moves downwards, and the protrusion recovers the previous shape under the action of the elasticity of the protrusion and limits the pushing-against part 21 to return, so that the effect of pushing-against the pushing-against part 21 in a single direction can be achieved. The two types of limiting parts can both achieve the effect of preventing the pushing part 21 from moving in the direction away from the casing 100 under the action of the sealing element 300, so as to ensure the smooth proceeding of the sealing process, and other limiting part structures capable of achieving the purpose of preventing the pushing part 21 from returning also belong to the protection range of the scheme.
For the guide 22, the guide 22 includes a mounting seat 221 and a guide rail 222, the mounting seat 221 is assembled at the stepped groove 111 of the opening 11 and an installation groove 2211 accommodating the sealing member 300 is opened at an assembly position of the stepped groove 111, the guide rail 222 is connected to the mounting seat 221 and is adapted to the abutting member 21, so that the guide rail 222 guides the abutting member 21 to abut against the mounting seat 221 to move along the inner wall of the opening 11.
When the pushing and abutting part 21 is screwed on the inner wall of the through hole 112, the guide rail 222 is a circular guide rail 222, the cross section of the guide rail 222 is a T-shaped surface, in order to ensure assembly, the guide rail 222 and the pushing and abutting part 21 are both in a split structure, during assembly, the pushing and abutting part 21 and the guide rail 222 are firstly split, the pushing and abutting part 21 of each split is slidably inserted into each corresponding split guide rail 222, then the pushing and abutting part 21 of each split and the guide rail 222 of each split are connected in a detachable connection mode such as insertion or screw connection, and finally the assembly is carried out into the opening 11, so that the effect of being adaptive is achieved. The T-shaped cross section of the guide rail 222 is to increase the area of the T-shaped surface facing to one side of the abutting part 21 in the moving process after the abutting part 21 and the guide rail 222 are installed, so as to reduce the possibility of separation of the two, thereby further ensuring the sealing property.
In order to facilitate the rotation or the pulling of the cover body 200, a handle 23 is disposed on a side of the cover body 200 away from the housing 100, the handle 23 is an arc structure fitting the shape of a human hand, and is disposed in the middle of the cover body 200, so that the sealing and the opening of the housing 100 are realized through the handle 23. In addition, in order to prevent the bottom of the case 100 from being worn and to simultaneously maintain the stability of the case 100, support legs 15 are provided at four bottom corners of the case 100, respectively, to stably support the case 100 and to prevent the bottom of the case 100 from being worn.
For completeness of the scheme, as shown in fig. 4, the housing 100 further includes a lifting assembly 12, the lifting assembly 12 includes a lifting rod 121, a motor 122 and a placing tray 123, a fixed end of the lifting rod 121 is disposed at a bottom of an inner wall of the housing 100, the motor 122 is connected to a free end of the lifting rod 121 and located inside the free end, the lifting rod 121 can drive the motor 122 to lift, the motor 122 is a rotating motor 122, the placing tray 123 is connected to an output end of the rotating motor 122 and is used for placing an electronic component to be tested, so that the placing tray 123 can move up and down and rotate, and the placing tray 123 is moved to a proper position so as to be matched with the radio frequency assembly 13 and the monitoring assembly 14 to detect and display the electronic component.
Further, as shown in fig. 5, the housing 100 further includes a radio frequency assembly 13, the radio frequency assembly 13 includes a push rod 131, a box 132 and a radio frequency detection head 133, the push rod 131 penetrates through the side wall of the housing 100 and can reciprocate in a direction parallel to the bottom of the housing 100, here, the push rod 131 can be selected as a telescopic rod, the box 132 is connected to one end of the push rod 131 located in the housing 100, the box 132 is provided with an opening facing the placing tray 123, and the radio frequency detection head 133 is located at the opening in the box 132. Promote box 132 and radio frequency detection head 133 through push rod 131 and remove to placing the dish 123 top, carry out the radio frequency test, the outside box 132 of radio frequency detection head 133 can completely cut off radio frequency detection head 133 and other components, great reinforcing radio frequency assembly 13's anti-interference performance, and then improve the accuracy of radio frequency test.
In addition, the housing 100 further includes a monitoring assembly 14, the monitoring assembly 14 including: the camera 141 is arranged on the inner wall of the shell 100, and the camera 141 faces the placing disc 123; and the display 142 is arranged on the outer wall of the shell 100 and electrically connected with the camera 141 so as to monitor the internal picture of the shell 100 in real time. Wherein, this camera 141 is wide-angle camera 141, and display 142 is the display screen of PLC controller control, and wide-angle camera 141 is connected with casing 100 inner wall, can monitor in casing 100 when carrying out radio frequency test debugging through wide-angle camera 141, and the control picture passes through display 142 and shows in real time, the visual observation of being convenient for.
In order to enable the whole radio frequency test box to have a good anti-interference effect, shielding layers are arranged on the inner walls of the shell 100, the mounting seat 221 and the box body 132, the radio frequency assembly 13, the monitoring assembly 14 and the lifting assembly 12 inside the shell 100 can be isolated from the outside through the shielding layers, the shielding layers comprise silver-plated copper flat belt layers and silver-plated copper wire braided layers, and the silver-plated copper wire braided layers are braided outside the silver-plated copper flat belt layers, so that external interference is shielded, the anti-interference performance of the radio frequency test box can be greatly enhanced, and the accuracy of radio frequency test is further improved.
It is noted that in the description and claims of the present application and in the above-mentioned drawings, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.
Also, the terms "comprises," "comprising," and "having," as well as any variations thereof or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications and changes to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A radio frequency test box, comprising:
a housing (100) provided with an opening (11);
the cover body (200) is matched with the opening (11), the cover body (200) comprises a pushing part (21) and a guide part (22), and the guide part (22) guides the pushing part (21) to move along the inner wall of the opening (11); and the number of the first and second groups,
a sealing member (300) fitted between the cover body (200) and the opening (11), the sealing member (300) being pushed by the cover body (200), thereby elastically sealing the housing (100).
2. Radio frequency test box according to claim 1, characterized in that said guide (22) is connected to a side of said push-against (21) facing towards said housing (100) and/or to a side facing away from said housing (100).
3. A radio frequency test box according to claim 2, characterized in that said guide (22) comprises:
the mounting seat (221) is assembled at the stepped groove (111) of the opening (11) and is provided with a mounting groove (2211) for accommodating the sealing element (300) at the assembling position of the mounting seat and the stepped groove (111); and the number of the first and second groups,
the guide rail (222) is connected to the mounting seat (221) and matched with the pushing and abutting piece (21), and the guide rail (222) guides the pushing and abutting piece (21) to push and abut against the mounting seat (221) to move along the inner wall of the opening (11).
4. The radio frequency test box according to claim 3, characterized in that the inner wall of the opening (11) is provided with a limiting part; the pushing and supporting piece (21) is in threaded connection with the inner wall of the opening (11), and the limiting part is an internal thread; the pushing and supporting piece (21) is connected to the inner wall of the opening (11) in a sliding mode, and the limiting portion is a protrusion.
5. The radio frequency test box according to claim 3, wherein the guide rail (222) and the abutting piece (21) are both of a split structure, and the cross section of the guide rail (222) is a T-shaped surface.
6. The radio frequency test box according to claim 1, wherein a side of the cover body (200) facing away from the housing (100) is provided with a handle (23), and the handle (23) is used for lifting the cover body (200).
7. The radio frequency test box of claim 3, wherein the housing (100) further comprises a lift assembly (12), the lift assembly (12) comprising:
a lifting rod (121), the fixed end of which is arranged in the shell (100);
a motor (122) connected to a free end of the lifting rod (121); and the number of the first and second groups,
and the placing disc (123) is connected to the output end of the motor (122), and the motor (122) drives the placing disc (123) to rotate for placing the electronic element to be tested.
8. The radio frequency test box according to claim 7, wherein said housing (100) further comprises a radio frequency assembly (13), said radio frequency assembly (13) comprising:
a push rod (131) penetrating the housing (100);
the box body (132) is connected to one end, located in the shell (100), of the push rod (131), and the box body (132) is provided with an opening facing the placing disc (123);
a radio frequency detection head (133) located at the opening in the tank (132).
9. The radio frequency test box according to claim 7, wherein said housing (100) further comprises a monitoring assembly (14), said monitoring assembly (14) comprising:
the camera (141) is arranged on the inner wall of the shell (100), and the camera (141) faces the placing disc (123); and the number of the first and second groups,
and the display (142) is arranged on the outer wall of the shell (100) and is electrically connected with the camera (141) so as to monitor the picture of the internal part of the shell (100) in real time.
10. The rf test box of claim 8, wherein the housing (100), the mounting seat (221), and the inner wall of the box (132) are provided with shielding.
CN202121115278.5U 2021-05-21 2021-05-21 Radio frequency test box Active CN215575379U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121115278.5U CN215575379U (en) 2021-05-21 2021-05-21 Radio frequency test box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121115278.5U CN215575379U (en) 2021-05-21 2021-05-21 Radio frequency test box

Publications (1)

Publication Number Publication Date
CN215575379U true CN215575379U (en) 2022-01-18

Family

ID=79863202

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121115278.5U Active CN215575379U (en) 2021-05-21 2021-05-21 Radio frequency test box

Country Status (1)

Country Link
CN (1) CN215575379U (en)

Similar Documents

Publication Publication Date Title
US6002263A (en) Probe station having inner and outer shielding
US6252392B1 (en) Probe station having environment control chamber with bendably extensible and retractable lateral wall assembly
US4786758A (en) Door shield for shielded enclosure
KR0137588B1 (en) Automatic broadband electromagnetic generator
CN215575379U (en) Radio frequency test box
CN112839129B (en) Mobile phone antenna detection device
US20100051344A1 (en) Testing device
CN209823771U (en) 4G radio frequency testing device
US20090061664A1 (en) Grounding one or more cables
CN214174539U (en) Power cable partial discharge detection device
CN113671222B (en) Filtering module with high shielding performance and corresponding shielding box thereof
CN205193116U (en) Camera bellows detection device and rotary mechanism who is arranged in camera bellows detection device
CN211061622U (en) Anechoic chamber for testing electromagnetic compatibility of photovoltaic inverter
CN211478516U (en) Partial discharge live detector
CN211557864U (en) Drawer type shielding box
CN220933202U (en) Radiation testing device
CN218158149U (en) Automatic calibration comprehensive testing jig for shielding box
CN212808443U (en) Novel frequency-selecting electromagnetic radiation monitor
CN218734324U (en) Detection device
CN109470727B (en) CT positioning detection tool for cable
CN216251095U (en) Shielding assembly, electric tuning controller and electric tuning antenna
CN210291431U (en) Portable digital leak listening instrument
KR970008142B1 (en) Broadband transverse electromagnetic cell and automatic broadband transverse electromagnetic cell
KR960010759B1 (en) The upper opening and shutting type t.e.m. cell
GB2052892A (en) Electrical sealing device

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant