JP2011199768A5 - - Google Patents
Download PDFInfo
- Publication number
- JP2011199768A5 JP2011199768A5 JP2010066815A JP2010066815A JP2011199768A5 JP 2011199768 A5 JP2011199768 A5 JP 2011199768A5 JP 2010066815 A JP2010066815 A JP 2010066815A JP 2010066815 A JP2010066815 A JP 2010066815A JP 2011199768 A5 JP2011199768 A5 JP 2011199768A5
- Authority
- JP
- Japan
- Prior art keywords
- transmission loss
- level
- joint reception
- signal
- detection unit
- 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
Description
受信機22は、図2に示すように入力端子46を有している。この入力端子46が、共同受信システム2または4の端末端子10a乃至10dまたは16a乃至16dに順に接続され、共同受信システム2または4を伝送されたテスト信号を受ける。 The receiver 22 has an input terminal 46 as shown in FIG. The input terminal 46 is sequentially connected to the terminal terminals 10a to 10d or 16a to 16d of the joint reception system 2 or 4, and receives a test signal transmitted through the joint reception system 2 or 4.
信号検出部52は、増幅部50からのテスト信号のレベルを検出するレベル検出部(図示せず)を有し、このレベル検出部からのレベル検出信号を、複数、例えば4つの異なる基準信号とそれぞれ比較器(図示せず)で比較される。これら基準信号は、共同受信システム2、4の入力端子6、12に供給されたテスト信号が共同受信システム2、4に伝送されて、端末端子10a乃至10dのいずれかまたは端末端子16a乃至16dのいずれかで受信されたときに、レベル検出部のレベル検出信号のレベルが、元のテスト信号(送信機20から送信されるテスト信号の出力レベル)よりも30dB、20dB、10dB、0dBの伝送損失を受けているのに相当するレベルに設定されている。これら比較器での比較結果に基づいて表示部54に表示がされる。 The signal detection unit 52 includes a level detection unit (not shown) that detects the level of the test signal from the amplification unit 50. The level detection signal from the level detection unit is divided into a plurality of, for example, four different reference signals. Each is compared by a comparator (not shown). As for these reference signals, the test signals supplied to the input terminals 6 and 12 of the joint reception systems 2 and 4 are transmitted to the joint reception systems 2 and 4, and either one of the terminal terminals 10a to 10d or the terminal terminals 16a to 16d. When received at either level, the level detection signal level of the level detection unit is 30 dB, 20 dB, 10 dB, 0 dB transmission loss from the original test signal (output level of the test signal transmitted from the transmitter 20). It is set to the level equivalent to receiving. Display is made on the display unit 54 based on the comparison results of these comparators.
上記の両実施形態では、受信機22、22aの信号検出部52は、増幅部50の出力のレベルを検出し、そのレベルを異なる基準信号と比較するように構成したが、例えば増幅部50に自動利得制御回路を設け、その自動利得制御回路において自動利得制御するための自動利得制御信号を異なる値の基準信号と比較するように構成することもできる。また、上記の両実施形態では、受信機22、22aの表示部54は、4段階に伝送損失を表示するように構成したが、1つ以上の基準信号を使用して、2段階以上の任意の段階で伝送損失を表示することができる。また、表示部54としてLED54a乃至54dを使用したが、これらに代えて、例えば文字や図形を表示することができる1つの液晶表示部を使用することもできる。この場合、第1の実施形態と同様に30dB以上の伝送損失、30乃至20dBの伝送損失、20乃至10dBの伝送損失、10乃至0dBの伝送損失と文字で表示することもできるし、改修必要、改修不要等の文字を表示することもできる。また、上記の両実施形態では、LED54a乃至54dのうち、識別された伝送損失が該当する伝送損失範囲に対応するLEDのみが点灯したが、逆に識別された伝送損失が該当する伝送損失範囲に対応するLEDのみを消灯させ、他のLEDを点灯させるように構成することもできる。上記の両実施形態では、共同受信システム2、4について診断する場合を示したが、これらに限ったものではなく、他の構成の共同受信システムを診断することもできる。例えば双方向の共同受信システムを診断することもできる。
In both embodiments described above, the signal detection unit 52 of the receiver 22,22a detects the level of the output of the amplifier 50 is configured so as to compare with the level different reference signals, for example, to the amplifier 50 An automatic gain control circuit may be provided, and an automatic gain control signal for automatic gain control in the automatic gain control circuit may be compared with a reference signal having a different value. In both of the above embodiments, the display unit 54 of the receivers 22 and 22a is configured to display transmission loss in four stages. However, using one or more reference signals, two or more arbitrary stages are used. The transmission loss can be displayed at this stage. Moreover, although LED54a thru | or 54d was used as the display part 54, it can replace with these and can also use one liquid crystal display part which can display a character and a figure, for example. In this case, the transmission loss of 30 dB or more, the transmission loss of 30 to 20 dB, the transmission loss of 20 to 10 dB, the transmission loss of 10 to 0 dB can be displayed in the same manner as in the first embodiment, and the repair is necessary. Characters that do not require modification can also be displayed. In both the above embodiments, among the LEDs 54a to 54d, only the LED corresponding to the transmission loss range corresponding to the identified transmission loss is lit, but conversely, the identified transmission loss falls within the corresponding transmission loss range. Only the corresponding LED can be turned off, and the other LEDs can be turned on. In both the above embodiments, the cases of diagnosing the joint reception systems 2 and 4 have been described. However, the present invention is not limited to these, and joint reception systems having other configurations can also be diagnosed. For example, a two-way joint reception system can be diagnosed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010066815A JP5501817B2 (en) | 2010-03-23 | 2010-03-23 | Diagnostic system for joint reception system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010066815A JP5501817B2 (en) | 2010-03-23 | 2010-03-23 | Diagnostic system for joint reception system |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2011199768A JP2011199768A (en) | 2011-10-06 |
JP2011199768A5 true JP2011199768A5 (en) | 2013-05-02 |
JP5501817B2 JP5501817B2 (en) | 2014-05-28 |
Family
ID=44877364
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010066815A Active JP5501817B2 (en) | 2010-03-23 | 2010-03-23 | Diagnostic system for joint reception system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP5501817B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6726999B2 (en) * | 2016-03-30 | 2020-07-22 | Dxアンテナ株式会社 | Inspection system |
JP6736495B2 (en) * | 2017-02-10 | 2020-08-05 | Dxアンテナ株式会社 | Electromagnetic wave measuring instrument and equipment diagnostic system using the same |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06331682A (en) * | 1993-05-26 | 1994-12-02 | Matsushita Electric Works Ltd | Testing device for broadcast-receiving wiring |
JP3123866B2 (en) * | 1993-11-26 | 2001-01-15 | エヌイーシーケーブルメディア株式会社 | CATV transmission line frequency characteristic deviation measuring device |
JPH09294254A (en) * | 1996-04-26 | 1997-11-11 | Matsushita Electric Works Ltd | Method and device for adjusting signal level of television community receiving system |
JP3865301B2 (en) * | 2001-12-14 | 2007-01-10 | 日本放送協会 | BS additional channel transmission path test apparatus and BS additional channel transmission path test signal generator |
-
2010
- 2010-03-23 JP JP2010066815A patent/JP5501817B2/en active Active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20090052713A1 (en) | Wireless microphone system | |
WO2020046499A3 (en) | Embedded universal serial bus 2 repeater | |
WO2012048049A3 (en) | Testing high-speed input-output devices | |
RU2008124971A (en) | SYSTEMS AND METHODS FOR PROVIDING DISTRIBUTED USER INTERFACES FOR CONFIGURING CLIENT DEVICES | |
WO2013119952A1 (en) | Sensor fault detection system and method | |
US20160217052A1 (en) | Debug circuit, debug request circuit and debug system | |
US20190130812A1 (en) | Display driving circuit, driving method thereof and display apparatus | |
JP2017195500A5 (en) | ||
WO2013143828A3 (en) | Interlock detector with self-diagnosis function for an interlock circuit, and method for the self-diagnosis of the interlock detector | |
US20180270768A1 (en) | Communication Apparatus With Antenna Attenuation Compensation | |
EP2319726A3 (en) | Communication circuit, assembled battery unit, and vehicle | |
WO2009151738A3 (en) | Receiver for recovering and retiming electromagnetically coupled data | |
US10444808B2 (en) | USB control apparatus and signal control method for the same | |
WO2011006105A3 (en) | Quantifying link quality in an optoelectronic module | |
FR3040817B1 (en) | METHODS OF AUTOMATIC DISARMING AND OF USE OF AN ANTI-INTRUSION ALARM SYSTEM, AND ASSOCIATED ALARM SYSTEM | |
JP2011199768A5 (en) | ||
US9312956B2 (en) | Fiber-optic communication apparatus capable of operating in a normal mode and a power calibration mode, and communication device used within the same | |
WO2016188482A1 (en) | Detection method and apparatus | |
EP1610475A4 (en) | Optical transmission path failure detection system | |
US8847654B2 (en) | Controlling circuit for analog measurement module and controlling module thereof | |
US9910805B2 (en) | Patch panel and distribution amplifier with configurable input/output module | |
US20160132416A1 (en) | Communication monitoring system | |
CN103560827A (en) | Fault detection method and device | |
JP5501817B2 (en) | Diagnostic system for joint reception system | |
JP4128213B1 (en) | Detection device and cable connection detection method |