JPH0429069A - Monitoring system for immunity measurement - Google Patents
Monitoring system for immunity measurementInfo
- Publication number
- JPH0429069A JPH0429069A JP13386690A JP13386690A JPH0429069A JP H0429069 A JPH0429069 A JP H0429069A JP 13386690 A JP13386690 A JP 13386690A JP 13386690 A JP13386690 A JP 13386690A JP H0429069 A JPH0429069 A JP H0429069A
- Authority
- JP
- Japan
- Prior art keywords
- camera
- specimen
- mirror
- radio wave
- measurement
- 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.)
- Granted
Links
- 238000005259 measurement Methods 0.000 title claims abstract description 33
- 230000036039 immunity Effects 0.000 title claims description 20
- 238000012544 monitoring process Methods 0.000 title abstract description 14
- 239000006096 absorbing agent Substances 0.000 claims abstract description 14
- 101150097247 CRT1 gene Proteins 0.000 abstract description 4
- 230000000979 retarding effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 239000002023 wood Substances 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 101100112083 Arabidopsis thaliana CRT1 gene Proteins 0.000 description 1
- 101100238301 Arabidopsis thaliana MORC1 gene Proteins 0.000 description 1
- 101100519629 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) PEX2 gene Proteins 0.000 description 1
- 101100468521 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) RFX1 gene Proteins 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0807—Measuring electromagnetic field characteristics characterised by the application
- G01R29/0814—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning
- G01R29/0821—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning rooms and test sites therefor, e.g. anechoic chambers, open field sites or TEM cells
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、イミユニティ測定用モニターシステムに関す
るものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a monitor system for measuring immunity.
（従来の技術）
近年、電子機器のＩＣ化か進んだ結果、電子機器が発生
する電磁波によって電子機器か誤作動したり、コンピュ
ータのデータか狂うなど電磁波公害が深刻な問題となっ
ている。この電磁波対策のため、電子機器から発生する
電磁波ノイズを正確に測定する施設として電波暗室か用
いられている。この電波暗室は、壁からの反射を防ぐた
め、ピラミッド形状等の電波吸収体を壁や床に貼り付け
た構造とし、所定の位置に送受信アンテナを配置して、
ターンテーブル上に置かれた供試体（例えば、電子機器
等）から発生する電磁波ノイズを測定する。第３図に電
波暗室の平面図を示す。第３図において、１２は電波吸
収体、１４はシールド面、１６は供試体を載せるターン
テーブル、１８は送受信アンテナを設置するアンテナポ
ジショナ−２０、２２は扉である。(Prior Art) In recent years, as the use of ICs in electronic devices has progressed, electromagnetic wave pollution has become a serious problem, with electromagnetic waves generated by electronic devices causing them to malfunction and corrupting computer data. As a countermeasure against electromagnetic waves, an anechoic chamber is used as a facility to accurately measure electromagnetic noise generated by electronic devices. This anechoic chamber has a structure in which pyramid-shaped radio wave absorbers are attached to the walls and floor to prevent reflections from the walls, and transmitting and receiving antennas are placed at predetermined positions.
Measures electromagnetic noise generated from a specimen (e.g., electronic equipment) placed on a turntable. Figure 3 shows a plan view of the anechoic chamber. In FIG. 3, 12 is a radio wave absorber, 14 is a shield surface, 16 is a turntable on which a specimen is placed, 18 is an antenna positioner 20 for installing a transmitting and receiving antenna, and 22 is a door.
このような電波暗室において、供試体の放射妨害波によ
る影響を視覚的または映像でキャッチするシステムとし
て、イミユニティ測定用モニターシステムがある。この
従来のイミユニティ測定用モニターシステムの例を第４
図に示す。第４図において、１は供試体としてのＣＲＴ
、２はＣＲＴｌへの放射妨Ｖ＊の影響を計測（監視）す
るための計測室、５は放射妨害波を出す送受信アンテナ
、６はＣＲ７１画面の変化を表示するモニター ７は操
作者、１６は据え置き型のターンテーブル、３０はＣＲ
Ｔｌの画面の変化をモニターするＴＶカメラである。こ
こで、ターンテーブル１６には電波を反射しない木製や
ＦＲＰ製のものを使用する。In such an anechoic chamber, there is an immunity measurement monitor system as a system that visually or visually detects the effects of radiated disturbance waves on a specimen. An example of this conventional immunity measurement monitor system is shown in the fourth example.
As shown in the figure. In Fig. 4, 1 is a CRT as a specimen.
, 2 is a measurement room for measuring (monitoring) the influence of radiated interference V* on the CRT1, 5 is a transmitting and receiving antenna that emits radiated interference waves, 6 is a monitor that displays changes on the CR71 screen, 7 is an operator, and 16 is a Stationary turntable, 30 is CR
This is a TV camera that monitors changes on the Tl screen. Here, the turntable 16 is made of wood or FRP, which does not reflect radio waves.
このような構成のイミユニティ測定用モニターシステム
において、アンテナ５から放射される放射妨害波をター
ンテーブル１６上のＣＲＴｌか受けると、ＣＲＴ画面が
その影響を受けて変化する。In the immunity measurement monitor system having such a configuration, when the CRT 1 on the turntable 16 receives radiation interference waves radiated from the antenna 5, the CRT screen changes under the influence.
この変化をＴＶ左カメラ０を通してモニターし、計測室
２内のモニター６にその状態を表示する。計測室２内の
操作者７はモニター６を見て視覚的にイミユニティ（耐
妨害波特性）測定を行う。This change is monitored through the TV left camera 0, and the status is displayed on the monitor 6 in the measurement room 2. An operator 7 in the measurement room 2 looks at the monitor 6 and visually measures immunity (anti-interference characteristics).
上述のイミユニティ測定において使用されるＴＶ左カメ
ラ０は、それ自身が電波反射体のため、測定系の外乱と
なる。従って、ＴＶ左カメラ０は影響の少ない位置、例
えば電波暗室の天井または壁コーナ一部（第４図）に固
定して取り付けられている。The TV left camera 0 used in the above-mentioned immunity measurement is itself a radio wave reflector and therefore causes disturbance to the measurement system. Therefore, the TV left camera 0 is fixedly mounted at a position with little influence, for example, on the ceiling or part of a wall corner (FIG. 4) of the anechoic chamber.
（発明が解決しようとする課Ｍ）
しかしながら、上記従来のシステムては、ＴＶカメラは
電波暗室の天井または壁コーナ一部に固定して取り付け
られているため、供試体を載せているターンテーブルが
回転すると、供試体の周囲を見ることになり、イミユニ
ティ測定でＣＲＴ画面の連続的な変化を見ることができ
なくなるという問題があった。(Problem M to be solved by the invention) However, in the conventional system described above, the TV camera is fixedly attached to the ceiling or a part of the wall corner of the anechoic chamber, so the turntable on which the specimen is placed is When rotated, the surroundings of the specimen must be viewed, and there was a problem in that continuous changes on the CRT screen could not be seen during immunity measurement.
本発明の目的は、このような従来の問題を解決し、ター
ンテーブルの回転中も供試体の連続的な監視を可能とす
るイミユニティ測定用モニターシステムを提供すること
にある。SUMMARY OF THE INVENTION An object of the present invention is to provide an immunity measurement monitor system that solves these conventional problems and enables continuous monitoring of a specimen even while the turntable is rotating.
（課題を解決するための手段）
上記目的を達成するため、本発明のイミユニティ測定用
モニターシステムは、電波暗室内の供試体への放射妨害
波による影響を視覚的に監視するイミユニティ測定用モ
ニターシステムにおいて、上記供試体を載せる台に監視
カメラを組み込み、該監視カメラの周囲を電波吸収体で
取り囲んだ構造とし、上記監視カメラによりターンテー
ブルの回転中も上記供試体の所定の位置の連続的な監視
を行うことに特徴がある。(Means for Solving the Problems) In order to achieve the above object, the immunity measurement monitor system of the present invention is an immunity measurement monitor system that visually monitors the influence of radiated disturbance waves on a specimen in an anechoic chamber. In this method, a surveillance camera is built into the stand on which the specimen is placed, and the surveillance camera is surrounded by a radio wave absorber, and the surveillance camera continuously monitors a predetermined position of the specimen even while the turntable is rotating. It is characterized by monitoring.
また、本発明のイミユニティ測定用モニターシステムは
、電波暗室内の供試体への放射妨害波による影響を視覚
的に監視するイミユニティ測定用モニターシステムにお
いて、上記供試体を載せる台に監視カメラを組み込み、
該台上で電波測定に影響を与えない位置にミラーを取り
付け、該ミラーの裏面には電波吸収体を貼り付けた構造
とし、上記ミラーの角度を変えることにより一１上記監
視カメラは上記ミラーを介して上記供試体の任意の位置
の監視を行うことに特徴がある。Further, the immunity measurement monitor system of the present invention is an immunity measurement monitor system for visually monitoring the influence of radiated disturbance waves on a specimen in an anechoic chamber, and includes a monitoring camera built into a stand on which the specimen is placed.
A mirror is installed on the stand at a position that does not affect radio wave measurement, and a radio wave absorber is pasted on the back of the mirror, and by changing the angle of the mirror, the surveillance camera It is characterized in that any position of the specimen can be monitored through the monitor.
（作用）
本発明においては、上記供試体を載せる台に監視カメラ
を組み込み、該監視カメラの周囲を電波吸収体で取り囲
んだ構造とし、上記監視カメラによりターンテーブルの
回転中も上記供試体の所定の位置の連続的な監視を行う
。(Function) In the present invention, a surveillance camera is built into the stand on which the specimen is placed, and the surveillance camera is surrounded by a radio wave absorber. Continuous monitoring of the location of
また、本発明においては、上記供試体を載せる台に監視
カメラを組み込み、該台上で電波測定に影響を与えない
位置にミラーを取り付け、該ミラーの裏面には電波吸収
体を貼り付けた構造とし、上記ミラーの角度を変えるこ
とにより、上記監視カメラは上記ミラーを介して上記供
試体の任意の位置の監視を行う。これらにより、供試体
の連続的な監視や任意の位置の監視ができる。In addition, in the present invention, a surveillance camera is built into the stand on which the above specimen is placed, a mirror is attached on the stand at a position that does not affect the radio wave measurement, and a radio wave absorber is attached to the back surface of the mirror. By changing the angle of the mirror, the surveillance camera monitors any position of the specimen through the mirror. These allow continuous monitoring of the specimen and monitoring of arbitrary positions.
（実施例） 以下、本発明の実施例を、図面により詳細に説明する。(Example) Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
第１図は、本発明の一実施例を示すイミユニティ測定用
モニターシステムの構成図である。FIG. 1 is a configuration diagram of an immunity measurement monitor system showing an embodiment of the present invention.
第１図において、１は供試体としてのＣＲＴ、２は計測
室、３はターンテーブル１６に組み込み電磁シールドを
施したＴＶカメラ（監視カメラ）、４はＴＶカメラ３の
電波反射を防止するための電波吸収体、５は放射妨害波
を出すアンテナ、６はモニター ７は操作者、１６はＣ
ＲＴ （供試体）１を載せるターンテーブル（木製また
はＦＲＰ製等）、１８はアンテナポジショナ−である。In Fig. 1, 1 is a CRT as a specimen, 2 is a measurement room, 3 is a TV camera (surveillance camera) built into a turntable 16 and provided with electromagnetic shielding, and 4 is a monitor for preventing radio wave reflection from the TV camera 3. Radio wave absorber, 5 is an antenna that emits radiated interference waves, 6 is a monitor, 7 is an operator, 16 is C
A turntable (made of wood, FRP, etc.) on which the RT (specimen) 1 is placed, and 18 an antenna positioner.
本実施例では、第１図に示すように、ＴＶカメラ３にシ
ールドを施し、そのシールドを施したＴＶカメラ３を、
ターンテーブル１６に組み込み、ＣＲＴＩの画面をモニ
ター（監視）できるように取り付けている。そして、Ｔ
Ｖカメラ３が放射妨害電波を反射するのを防ぐため、Ｔ
Ｖカメラ３の周囲を電波吸収体４で取り囲んでいる。こ
れにより、ターンテーブル１６上のＣＲＴＩと同時にＴ
Ｖカメラ３も回転することになるので、回転中もＣＲＴ
画面の１点を連続的に監視できる。In this embodiment, as shown in FIG. 1, the TV camera 3 is shielded, and the shielded TV camera 3 is
It is built into the turntable 16 and attached so that the CRTI screen can be monitored. And T
To prevent the V camera 3 from reflecting radiated interference waves,
The V camera 3 is surrounded by a radio wave absorber 4. As a result, T at the same time as the CRTI on the turntable 16.
Since V camera 3 will also rotate, the CRT will also rotate.
One point on the screen can be continuously monitored.
イミユニティ測定については、従来の技術と同様である
ので、本実施例では説明を省略することとし、詳細測定
については従来の技術の説明を参照されたい。Immunity measurement is the same as the conventional technique, so the explanation will be omitted in this embodiment, and for detailed measurement, please refer to the explanation of the conventional technique.
第２図は、本発明の他の実施例を示すイミユニティ測定
用モニターシステムの構成図である。FIG. 2 is a configuration diagram of an immunity measurement monitor system showing another embodiment of the present invention.
第２図において、１は供試体としてのＣＲＴ。In FIG. 2, 1 is a CRT as a specimen.
２は計測室、５は放射妨害波を出すアンテナ、６はモニ
ター ７は操作者、８はターンテーブル１６に組み込み
、電磁シールドを施したＴＶカメラ（監視カメラ）、９
はＣＲＴＩの画面を反射させるミラー １６はＣＲＴ
（供試体）１を載せるターンテーブル（木製またはＦＲ
Ｐ製）、１８はアンテナポジショナ−である。2 is a measurement room, 5 is an antenna that emits radiated disturbance waves, 6 is a monitor, 7 is an operator, 8 is a TV camera (surveillance camera) built into the turntable 16 and provided with electromagnetic shielding, 9
is a mirror that reflects the CRTI screen 16 is a CRT
(Specimen) A turntable on which 1 is placed (wooden or FR
18 is an antenna positioner.
他の実施例では、第２図に示すように、ＴＶカメラ８に
シールドを施し、そのシールドを施したＴＶカメラ８を
、ターンチーツル１６に対して垂直に組み込み、ＣＲＴ
Ｉの画面をターンテーブル１６上に取り付けたミラー９
を介してモニター（監視）てきるようにしている。また
、ミラー９の裏面には電波吸収体を貼り付けておき、ミ
ラー９は電波測定に影響を受けない位置に電波透明体の
支持部材により取り付けている。これにより、本実施例
に加えて任意の位置、例えば供試体の正面、側面、上面
、裏面等の監視も可能となる。In another embodiment, as shown in FIG. 2, the TV camera 8 is shielded, and the shielded TV camera 8 is installed vertically to the turntable 16, and
Mirror 9 with the screen of I mounted on the turntable 16
I am trying to monitor (surveill) it through . Further, a radio wave absorber is pasted on the back surface of the mirror 9, and the mirror 9 is attached by a support member made of a radio wave transparent material at a position where it is not affected by radio wave measurement. As a result, in addition to this embodiment, it is also possible to monitor arbitrary positions, such as the front, side, top, and back surfaces of the specimen.
上述した本実施例及び他の実施例では、供試体を載せる
台として、据え置き型のターンテーブルを用い、このタ
ーンテーブルに監視カメラを組み込む構造としたか、こ
れに限定されることなく、電波暗室のターンテーブルと
して床埋込み型のターンテーブルを使用し、そのターン
テーブル上に木製等の電波を反射しない台を置き、その
台に監視カメラ等を組み込む構造としてもよいことは言
うまでもない。In this embodiment and other embodiments described above, a stationary turntable is used as a stand on which the specimen is placed, and a surveillance camera is built into this turntable, or a radio anechoic chamber is used. Needless to say, it is also possible to use a floor-embedded turntable as the turntable, place a stand made of wood or the like that does not reflect radio waves on top of the turntable, and incorporate a surveillance camera or the like into the stand.
（発明の効果）
以上説明したように、本発明によれば、供試体を載せる
台に監視カメラを組み込む構造にしたことにより、供試
体の回転中も供試体の一点を連続的に監視できるように
なる。さらに、ミラーを用いることにより、任意の位置
の監視かできるようになる。(Effects of the Invention) As explained above, according to the present invention, by incorporating a surveillance camera into the stand on which the specimen is placed, one point on the specimen can be continuously monitored even while the specimen is rotating. become. Furthermore, by using a mirror, it becomes possible to monitor any position.
第１図は本発明の一実施例を示すイミユニティ測定用モ
ニターシステムの構成図、
第２図は本発明の他の実施例を示すイミユニティ測定用
モニターシステムの構成図、
第３図は電波暗室の平面図、
第４図は従来例を説明するための図である。
１・・・ＣＲＴ、 ２・・・計測室、３・・・
ＴＶカメラ、 ４・・・電波吸収体、５・・・ア
ンテナ、 ６川モニター７・・・操作者、
８・・・ＴＶカメラ、９・・・ミラーFig. 1 is a block diagram of a monitor system for immiunity measurement showing an embodiment of the present invention, Fig. 2 is a block diagram of a monitor system for immiunity measurement showing another embodiment of the present invention, and Fig. 3 is a diagram of an anechoic chamber. The plan view and FIG. 4 are diagrams for explaining a conventional example. 1...CRT, 2...Measurement room, 3...
TV camera, 4... Radio wave absorber, 5... Antenna, 6 River monitor 7... Operator,
8...TV camera, 9...Mirror
Claims (2)
視覚的に監視するイミュニティ測定用モニターシステム
において、 上記供試体を載せる台に監視カメラを組み込み、該監視
カメラの周囲を電波吸収体で取り囲んだ構造とし、 上記監視カメラによりターンテーブルの回転中も上記供
試体の所定の位置の連続的な監視を行うことを特徴とす
るイミュニティ測定用モニターシステム。(1) In an immunity measurement monitor system that visually monitors the influence of radiated disturbance waves on a specimen in an anechoic chamber, a surveillance camera is built into the stand on which the specimen is placed, and a radio wave absorber is placed around the surveillance camera. A monitor system for immunity measurement, characterized in that the surveillance camera continuously monitors a predetermined position of the specimen even while the turntable is rotating.
視覚的に監視するイミュニティ測定用モニターシステム
において、 上記供試体を載せる台に監視カメラを組み込み、該台上
で電波測定に影響を与えない位置にミラーを取り付け、
該ミラーの裏面には電波吸収体を貼り付けた構造とし、 上記ミラーの角度を変えることにより、上記監視カメラ
は上記ミラーを介して上記供試体の任意の位置の監視を
行うことを特徴とするイミュニティ測定用モニターシス
テム。(2) In an immunity measurement monitor system that visually monitors the influence of radiated disturbance waves on a specimen in an anechoic chamber, a surveillance camera is built into the stand on which the specimen is placed, and the influence on radio wave measurements is monitored on the stand. Install the mirror in a position that does not give
The mirror has a structure in which a radio wave absorber is pasted on the back surface, and by changing the angle of the mirror, the surveillance camera can monitor any position of the specimen through the mirror. Monitor system for immunity measurement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2133866A JP2924086B2 (en) | 1990-05-25 | 1990-05-25 | Monitor system for immunity measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2133866A JP2924086B2 (en) | 1990-05-25 | 1990-05-25 | Monitor system for immunity measurement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0429069A true JPH0429069A (en) | 1992-01-31 |
| JP2924086B2 JP2924086B2 (en) | 1999-07-26 |
Family
ID=15114887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2133866A Expired - Fee Related JP2924086B2 (en) | 1990-05-25 | 1990-05-25 | Monitor system for immunity measurement |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2924086B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007033254A (en) * | 2005-07-27 | 2007-02-08 | Murata Mfg Co Ltd | Anechoic chamber |
| US7688246B2 (en) | 2005-05-10 | 2010-03-30 | Fuji Xerox Co., Ltd. | Radio wave absorber, electromagnetic field measurement system and radiated immunity system |
| JP2014522497A (en) * | 2011-06-15 | 2014-09-04 | ブリュテスト アクチエボラグ | Improved method and apparatus for measuring the performance of antennas, cell phones and other wireless terminals |
| JP2017026496A (en) * | 2015-07-23 | 2017-02-02 | 日本電信電話株式会社 | Radiation immunity test device and method thereof |
| JP2021039050A (en) * | 2019-09-05 | 2021-03-11 | アンリツ株式会社 | Radio wave anechoic box, measurement device, and monitoring method of posture of object under test |
-
1990
- 1990-05-25 JP JP2133866A patent/JP2924086B2/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7688246B2 (en) | 2005-05-10 | 2010-03-30 | Fuji Xerox Co., Ltd. | Radio wave absorber, electromagnetic field measurement system and radiated immunity system |
| US8063812B2 (en) | 2005-05-10 | 2011-11-22 | Fuji Xerox Co., Ltd. | Radio wave absorber, electromagnetic field measurement system and radiated immunity system |
| US8072366B2 (en) | 2005-05-10 | 2011-12-06 | Fuji Xerox Co., Ltd. | Radio wave absorber, electromagnetic field measurement system and radiated immunity system |
| US8279104B2 (en) | 2005-05-10 | 2012-10-02 | Fuji Xerox Co., Ltd. | Radio wave absorber, electromagnetic field measurement system and radiated immunity system |
| JP2007033254A (en) * | 2005-07-27 | 2007-02-08 | Murata Mfg Co Ltd | Anechoic chamber |
| JP2014522497A (en) * | 2011-06-15 | 2014-09-04 | ブリュテスト アクチエボラグ | Improved method and apparatus for measuring the performance of antennas, cell phones and other wireless terminals |
| US9258067B2 (en) | 2011-06-15 | 2016-02-09 | Bluetest Ab | Method and apparatus for measuring the performance of antennas, mobile phones and other wireless terminals |
| JP2017026496A (en) * | 2015-07-23 | 2017-02-02 | 日本電信電話株式会社 | Radiation immunity test device and method thereof |
| JP2021039050A (en) * | 2019-09-05 | 2021-03-11 | アンリツ株式会社 | Radio wave anechoic box, measurement device, and monitoring method of posture of object under test |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2924086B2 (en) | 1999-07-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2574409B2 (en) | Electromagnetic anechoic chamber for EMC test and its shielding material | |
| JP4586240B2 (en) | Electromagnetic radiation measuring apparatus and electromagnetic radiation measuring method | |
| US9244105B2 (en) | Portable spherical near-field antenna measurement system | |
| US20080074123A1 (en) | Electromagnetic shielding defect monitoring system and method for using the same | |
| JPH02153598A (en) | Electromagnetically shielded room provided with reflective plate | |
| CN111665399A (en) | Radar cross section testing system and radar cross section detecting method | |
| CN112834833A (en) | Compact range antenna test system | |
| KR101496792B1 (en) | Zig for testing a display panel, and system and methode for testing a display panel using the same | |
| US6987392B1 (en) | Electromagnetic protection test and surveillance system | |
| JP5023513B2 (en) | Electronic device test apparatus and electronic device test method | |
| JP2949981B2 (en) | Electromagnetic immunity test equipment | |
| JPH0429069A (en) | Monitoring system for immunity measurement | |
| JP2011102709A (en) | Radiation power measuring instrument and method of measuring radiation power | |
| JP3280861B2 (en) | Electromagnetic wave reflection box for electromagnetic wave environment test and electromagnetic wave environment test method using the same | |
| US6119808A (en) | Transportable acoustic screening chamber for testing sound emitters | |
| Hofmann et al. | Bi-static reflectivity measurements of microwave absorbers between 2 and 18 GHz | |
| JP2008241661A (en) | Emi measuring system | |
| JP2002318254A (en) | Radiowave black box in noise visualization system | |
| JPH08112266A (en) | Simulator for scan room of mri apparatus | |
| JPH0643197A (en) | Distribution estimating apparatus | |
| Hofmann et al. | Angle-Dependent Reflectivity of Microwave Absorbers at Oblique Wave Incidence | |
| JPH06249899A (en) | Estimating method of electromagnetic field distribution | |
| JP2001074797A (en) | Portable radio wave measuring instrument | |
| CN219474791U (en) | Diaphragm type sunlight source modulation device | |
| JP3341952B2 (en) | Radiation Emission Leak Location Detection Method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080507 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090507 Year of fee payment: 10 |
|
| LAPS | Cancellation because of no payment of annual fees |