CN1288333A - Debugging method of wired TV network transmission equipment - Google Patents
Debugging method of wired TV network transmission equipment Download PDFInfo
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- CN1288333A CN1288333A CN 00113026 CN00113026A CN1288333A CN 1288333 A CN1288333 A CN 1288333A CN 00113026 CN00113026 CN 00113026 CN 00113026 A CN00113026 A CN 00113026A CN 1288333 A CN1288333 A CN 1288333A
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- attenuator
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- equalizer
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Abstract
In the invention we use electromechanical balancer and attenuator with step-by-step motor and the controll circuit to replace traditional balancer and attenuator in prior transmission devices. The controlling data are sent into net transmission device of cable TV by data transmitter, then are sent into the electromechanical balancer and attenuator to change the balance value and the attenuation value. Advantages are: needing not opening the case of transmission device, simple adjustment, safe and reliable.
Description
The present invention relates to the cable TV network transmission technique field, specifically is a kind of debugging method of wired TV network transmission equipment.
The debugging of current cable web-transporting device, be to climb up electric pole by outside line debugging worker to open the transmission equipment shell, television signal level value according to the TV field strength meter demonstration, manual adjustment equilibrium or attenuator circuit output valve: have manually to change and insert balancedly, the attenuator circuit plate, manual adjustments type variable equalizer, attenuator are also arranged; The method of this manual debugging has following deficiency: 1. manually plug easily makes distributed constant change, because of operations such as manual plug, taking and placing all are easy to touch high frequency components and parts on equilibrium, the attenuator circuit plate, equilibrium, attenuator circuit plate distributed constant are changed, thereby cause whole cable television network system index to descend.2. manually the plug-in accessory is not easy to management and deposits, all should be furnished with manual plug-in equilibrium, the attenuator circuit plate of 14 kinds respectively according to each transmission equipment of network debugging needs, and each network debugging only needs wherein a kind of equilibrium, attenuator circuit plate, remaining equilibrium, attenuator circuit plate are owing to be high-frequency unit, can not push, can not be out of shape, to account for bigger space so deposit, the management trouble.3. the shell that manual debugging must be opened transmission equipment is debugged, and can cause debug results to change because of distributed constant change after shutting the transmission equipment shell on the one hand; Owing to work high above the ground, it is all very difficult that each shell is established in the opening and closing transmission on the other hand, increased the danger of high-altitude application.
The purpose of this invention is to provide a kind of transmission equipment shell of not opening, the method that wired TV network transmission equipment is debugged.
Adopt electromechanical equalizer, attenuator to substitute transmission equipment inner traditional equalizer, attenuator, by external equipment-data transmitter from wired TV network transmission equipment external detection mouth, control data is sent to electromechanical equalizer, attenuator, changes its equilibrium, pad value.Thereby realize not opening wired TV network transmission equipment shell, equilibrium, the attenuation that just can debug transmission equipment.
Technical scheme of the present invention is: by the interior transmission equipment that electromechanical equalizer, attenuator are housed, and data transmitter, TV field strength meter and test cable are formed hardware device of the present invention;
Electromechanical equalizer, attenuator in the transmission equipment are to consist of the following components: type variable equalizer, attenuator and the stepping motor coaxial with it, data sink, microprocessor, motor-drive circuit;
Adjustment method is the detection mouth output of TV signal forward by transmission equipment, be input to the input of data transmitter by the debugging cable, data transmitter does not process the input that outputs to TV field strength meter to TV signal, and TV field strength meter shows the television signal level value;
Press data transmitter, the data-signal that sends oppositely outputs to the detection mouth of transmission equipment, after TV signal is mixed, isolate data-signal through the digital-to-analogue split circuit in the transmission equipment and deliver to the electromechanical equalizer, data sink in the attenuator, data sink is converted to data pulse signal with the data-signal of receiving, output to microprocessor, after microprocessor carries out operational analysis with data pulse signal, the pulse beat signal that becomes polyphase multi-rhythm outputs to stepper motor driving circuit, stepper motor driving circuit rotates the pulse beat signal power amplification rear drive stepping motor of polyphase multi-rhythm, changes the type variable equalizer, the output valve of attenuator.
Type variable equalizer, attenuator can be any have an equalizer of revolving property structure, attenuators.
Beneficial effect of the present invention: 1. distributed constant can not change, because electromechanical equalizer, attenuator one-time fix and be installed in the transmission equipment, or else has manual operationss such as manual plug, taking and placing.Distributed constant can not change, thereby has guaranteed the reliability of whole network.2. be convenient to management,, do not need the space of managing in addition and depositing owing to all controlled equalizers, attenuator all are that disposable debugging is placed on transmission equipment inside well.3. need not to open the shell of transmission equipment when debugging, substituted traditional equalizer, attenuator, realized covered debugging by Electromechanical Control by electromechanical equalizer, attenuator; In debugging,, therefore can not contact and plug inner equilibrium, attenuator circuit plate, thereby not exist and cause inner each parts vibrations or move owing to do not open the shell of transmission equipment.Thereby debug results can not change.4. debug simple and safe reliable: during the network debugging, only need upper boom will debug the detection mouth of cable insertion transmission equipment, can finish debugging work underground.
The invention will be further described below in conjunction with accompanying drawing
Accompanying drawing 1 is a debugging wiring block diagram of the present invention
Accompanying drawing 2 is electromechanical equalizer, attenuator theory diagram
Embodiment: by the interior transmission equipment that electromechanical equalizer, attenuator are housed, data transmitter, TV field strength meter and test cable are formed hardware device of the present invention;
Electromechanical equalizer, attenuator in the transmission equipment are to consist of the following components: type variable equalizer, attenuator and the stepping motor coaxial with it, data sink, microprocessor, motor-drive circuit;
The TV signal of coming by transmission cable via the input plug of transmission equipment arrive an end of type variable equalizer, the attenuator of electromechanical equalizer, the attenuator of transmission equipment inside, through end output balanced, that attenuator circuit is balanced, the decay back arrives electromechanical equalizer, attenuator, the amplification that the TV signal of output is delivered to transmission equipment waits other circuit to divide the output of two-way TV signal: one tunnel output is delivered to the next stage transmission equipment via the main delivery outlet of transmission equipment; Another road TV signal outputs to the detection mouth of transmission equipment.
Adjustment method is that the debugging cable is connected transmission equipment and detects mouthful, and signal is outputed to the input of data transmitter, and data transmitter does not process the input that outputs to TV field strength meter to TV signal, and TV field strength meter shows the television signal level value;
Press data transmitter, the data-signal that sends oppositely outputs to the detection mouth of transmission equipment, after TV signal is mixed, isolate data-signal through the digital-to-analogue split circuit in the transmission equipment and deliver to the electromechanical equalizer, data sink in the attenuator, data sink is converted to data pulse signal with the data-signal of receiving, output to microprocessor, after microprocessor carries out operational analysis with data pulse signal, the pulse beat signal that becomes polyphase multi-rhythm outputs to stepper motor driving circuit, stepper motor driving circuit rotates the pulse beat signal power amplification rear drive stepping motor of polyphase multi-rhythm, changes the type variable equalizer, the output valve of attenuator.
Type variable equalizer, attenuator can be any have an equalizer of revolving property structure, attenuators.The present invention has selected SI-C that Shanghai Ying Da company produces and JH-A/B vertical and horizontal variable equalizer, attenuator for use; And equalizer, the attenuator of the KD-DXX suitching type of our company's invention.
Stepping motor can be to plant stepping motor arbitrarily, and what the present invention adopted is 28BYJ01A or the 24BYJ01A model four phase eight beat stepping motor that the changzhou electrical micro-machine is produced.
The effect of data sink is to finish reception to detect mouth or the next data analog signal of I/O port by transmission equipment, through frequency-selecting, handles and amplification back dateout TTL logic level signal.Data analog signal both can be DTMF, also can be other data analog signal such as FSK that the present invention was the dtmf signal that adopts.
The effect of microprocessor is to export required step motor drive pulse signal to stepper motor driving circuit behind the next data-signal of deal with data receiver.
The effect of motor-drive circuit is the drive pulse signal that amplifies microprocessor output, so that there are enough power pushing stepping motors to rotate.
The effect of data transmitter is to produce electromechanical equilibrium, the required data-signal of attenuator.
The effect of TV field strength meter is the level size that shows each television channel.
Claims (2)
1, a kind of debugging method of wired TV network transmission equipment, by the interior transmission equipment that electromechanical equalizer, attenuator are housed, data transmitter, TV field strength meter and test cable are formed;
It is characterized in that: electromechanical equalizer, attenuator in the transmission equipment are to consist of the following components: type variable equalizer, attenuator and the stepping motor coaxial with it, data sink, microprocessor, motor-drive circuit;
Adjustment method is the detection mouth output of TV signal forward by transmission equipment, be input to the input of data transmitter by the debugging cable, data transmitter does not process the input that outputs to TV field strength meter to TV signal, and TV field strength meter shows the television signal level value;
Press data transmitter, the data-signal that sends oppositely outputs to the detection mouth of transmission equipment, after TV signal is mixed, isolate data-signal through the digital-to-analogue split circuit in the transmission equipment and deliver to the electromechanical equalizer, data sink in the attenuator, data sink is converted to data pulse signal with the data-signal of receiving, output to microprocessor, after microprocessor carries out operational analysis with data pulse signal, the pulse beat signal that becomes polyphase multi-rhythm outputs to stepper motor driving circuit, stepper motor driving circuit rotates the pulse beat signal power amplification rear drive stepping motor of polyphase multi-rhythm, changes the type variable equalizer, the output valve of attenuator.
2, adjustment method according to claim 1, type variable equalizer, attenuator can be any have an equalizer of revolving property structure, attenuators.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00113026 CN1288333A (en) | 2000-06-14 | 2000-06-14 | Debugging method of wired TV network transmission equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00113026 CN1288333A (en) | 2000-06-14 | 2000-06-14 | Debugging method of wired TV network transmission equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1288333A true CN1288333A (en) | 2001-03-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00113026 Pending CN1288333A (en) | 2000-06-14 | 2000-06-14 | Debugging method of wired TV network transmission equipment |
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| CN (1) | CN1288333A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100411446C (en) * | 2004-07-08 | 2008-08-13 | 天津三星电子显示器有限公司 | Method for realtime display of signal intensity of analogue television signal receiving system |
| CN110691237A (en) * | 2019-10-25 | 2020-01-14 | 北京国信桥通信工程有限公司 | Debugging method of cable television system |
-
2000
- 2000-06-14 CN CN 00113026 patent/CN1288333A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100411446C (en) * | 2004-07-08 | 2008-08-13 | 天津三星电子显示器有限公司 | Method for realtime display of signal intensity of analogue television signal receiving system |
| CN110691237A (en) * | 2019-10-25 | 2020-01-14 | 北京国信桥通信工程有限公司 | Debugging method of cable television system |
| CN110691237B (en) * | 2019-10-25 | 2021-06-11 | 北京国信桥通信工程有限公司 | Debugging method of cable television system |
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