CN207505019U - A kind of external hanging type frequency spectrum monitoring device based on DOCSIS - Google Patents
A kind of external hanging type frequency spectrum monitoring device based on DOCSIS Download PDFInfo
- Publication number
- CN207505019U CN207505019U CN201721586668.4U CN201721586668U CN207505019U CN 207505019 U CN207505019 U CN 207505019U CN 201721586668 U CN201721586668 U CN 201721586668U CN 207505019 U CN207505019 U CN 207505019U
- Authority
- CN
- China
- Prior art keywords
- port
- docsis
- interface
- connect
- attenuators
- 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
Links
Landscapes
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The utility model discloses a kind of external hanging type frequency spectrum monitoring devices based on DOCSIS, are serially connected in CATV signal transmission networks, and whole equipment has 4 ports；By the information that network interface real-time report monitors to Network Management System, Local or Remote signal fault controlling and management can be provided, personnel are adjusted network so as to webmaster.
Description
Technical field
The utility model is related to TV network technical fields more particularly to one kind to be based on DOCSIS (Data Over Cable
Service Interface Specifications, data over cable service interface specification) external hanging type frequency spectrum monitoring set
It is standby.
Background technology
In CATV (Community Antenna Television, community's communal TV aerial), energy can be with
It is transmitted by the form of various carrier waves, the intrusion of test signal, noise, pulse signal etc. can lead to the distortion of CATV signals and cover
Lid floods, so as to influence the normal transmission of cable TV signal, it is therefore desirable to increase detection device, network is detected.So
And in deployed optical node and amplifier increase frequency spectrum monitoring function, need change existing network infrastructure, and cost compared with
It is high.
Utility model content
In order to solve technical problem present in background technology, the utility model proposes a kind of based on the plug-in of DOCSIS
Formula frequency spectrum monitoring device, to solve the problems, such as that signal quality in RF cable can not be monitored on-line in the prior art.
The utility model proposes a kind of external hanging type frequency spectrum monitoring device based on DOCSIS, including：
First port, second port, third port and the 4th port；
Radio frequency interface module is connect respectively with first port, second port and third port, in down direction, by higher level
The signal that the radiofrequency signal coupling unit radiofrequency signal that equipment is transmitted by first port is used as test mouth is transmitted to third port,
And the AC power in the portion radio frequency signal being coupled out is separated；In up direction, uplink signal is passed through into first end
Higher level equipment is given in oral instructions；
Duplexer is connect with radio frequency interface module；
DS attenuators, connect with duplexer；
US attenuators, connect with duplexer；
DOCSIS transponders, including downstream interface, upstream Interface and network interface, wherein, downstream interface is connect with DS attenuators,
Upstream Interface is connect with US attenuators, and network interface is connect with the 4th port；The radiofrequency signal being coupled out passes through downlink by DS attenuators
Interface enters DOCSIS transponders, and upstream radio-frequency signal is sent to US attenuators by upstream Interface.
Preferably, power module is further included, is connect with radio frequency interface module, it is straight that the alternating voltage of input is converted to 12V
Flow voltage output.
The monitoring device of the utility model can be serially connected in CATV signal transmission networks, do not change existing network knot
Structure, difficulty of construction is small, and installation is simple and convenient, safe；And based on DOCSIS agreements, client is allowed to carry out remote monitoring and control
System, and real-time monitoring warning can be carried out, comprehensive control network operation state when finding failure, can rapidly position simultaneously
It solves.
Description of the drawings
Fig. 1 is a kind of external hanging type frequency spectrum monitoring device structure chart based on DOCSIS that the utility model embodiment 1 proposes.
Specific embodiment
The utility model embodiment 1 proposes a kind of external hanging type frequency spectrum monitoring device based on DOCSIS, is serially connected in CATV
In signal transmission network, whole equipment has 4 ports, using independent case.Structure as shown in Figure 1, including：
First port 1 is the ingress port of AC power and radiofrequency signal, receives the radio frequency letter of upper level equipment transmission
Number.
Second port 2, is the outlet port of power supply and radiofrequency signal, and downward first device transmits radiofrequency signal, and can be with
Downward first device power supply, realizes feeding function.
Third port 3 is upper level equipment input radio frequency signal testing port.
4th port 4 is local management port, using network interface form, it can be achieved that being locally configured and upgrading.
The alternating voltage of input is converted to 12V DC voltage output by power module 5, is that DOCSIS should in monitoring device
It answers device module etc. and required power supply is provided.
Radio frequency interface module 6 is connect respectively with first port 1, second port 2 and third port 3, will in down direction
The signal that the radiofrequency signal coupling unit radiofrequency signal that higher level equipment is transmitted by first port 1 is used as test mouth is transmitted to third
Port 3, and the AC power in the portion radio frequency signal being coupled out is separated；In up direction, uplink signal is passed through
First port 1 sends higher level equipment to.
Duplexer 7 is connect with radio frequency interface module 6, realizes the uplink and downlink signals separation of DOCSIS parts.
DS attenuators 8 are connect with duplexer 7, for adjusting the intensity for the downlink radio-frequency signal that duplexer 7 is isolated.
US attenuators 9 are connect with duplexer 7, after adjusting the intensity of answer signal, are transmitted to duplexer 7.
DOCSIS transponders 10, including downstream interface, upstream Interface and network interface, wherein, downstream interface connects with DS attenuators 8
It connects, upstream Interface is connect with US attenuators 9, and network interface is connect with the 4th port 4；The radiofrequency signal being coupled out is led to by DS attenuators 8
It crosses downstream interface and enters DOCSIS transponders 10, upstream radio-frequency signal is sent to US attenuators 9 by upstream Interface；DOCSIS should
It answers device 10 and realizes DOCSIS agreements and signal testing function, based on DOCSIS agreements, support 8 down going channels, 4 data feedback channels
Binding technology.Level power and channel frequency point signal quality (MER, BER, CER) that signal is transmitted in network are carried out real-time
Monitoring analysis, the monitoring range of radiofrequency signal can detect the signal in 54~1000MHz bandwidth from 54-1000MHz, including
The parameters such as signal level, signal quality by the information that network interface real-time report monitors to Network Management System, can provide local
Or remote signal failure monitoring and management system, so as to webmaster, personnel are adjusted network.Simultaneously as part optical node and
Amplifier needs to power to the equipment of following carry, this equipment also has the function of feed.Since equipment is to be serially connected in rf chain
Lu Zhong has main signal the Insertion Loss of 3dB or so, but influences very little to main path signal.
The preferable specific embodiment of the above, only the utility model, but the scope of protection of the utility model is not
This is confined to, in the technical scope that any one skilled in the art discloses in the utility model, according to this practicality
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (2)
1. a kind of external hanging type frequency spectrum monitoring device based on DOCSIS, which is characterized in that including：
First port (1), second port (2), third port (3) and the 4th port (4)；
Radio frequency interface module (6) is connect respectively with first port (1), second port (2) and third port (3), in downlink side
To the signal that the radiofrequency signal coupling unit radiofrequency signal that higher level equipment is transmitted by first port (1) is used as to test mouth passes
Third port (3) is sent to, and the AC power in the portion radio frequency signal being coupled out is separated；It, will be upper in up direction
Row signal sends higher level equipment to by first port (1)；
Duplexer (7) is connect with radio frequency interface module (6)；
DS attenuators (8) are connect with duplexer (7)；
US attenuators (9) are connect with duplexer (7)；
DOCSIS transponders (10), including downstream interface, upstream Interface and network interface, wherein, downstream interface connects with DS attenuators (8)
It connects, upstream Interface is connect with US attenuators (9), and network interface is connect with the 4th port (4)；The radiofrequency signal being coupled out is by DS attenuators
(8) DOCSIS transponders (10) are entered by downstream interface, upstream radio-frequency signal is sent to US attenuators by upstream Interface
(9)。
2. the external hanging type frequency spectrum monitoring device according to claim 1 based on DOCSIS, which is characterized in that further include power supply
Module (5), connect with radio frequency interface module (6), and the alternating voltage of input is converted to 12V DC voltage output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721586668.4U CN207505019U (en) | 2017-11-23 | 2017-11-23 | A kind of external hanging type frequency spectrum monitoring device based on DOCSIS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721586668.4U CN207505019U (en) | 2017-11-23 | 2017-11-23 | A kind of external hanging type frequency spectrum monitoring device based on DOCSIS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207505019U true CN207505019U (en) | 2018-06-15 |
Family
ID=62506377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721586668.4U Active CN207505019U (en) | 2017-11-23 | 2017-11-23 | A kind of external hanging type frequency spectrum monitoring device based on DOCSIS |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207505019U (en) |
-
2017
- 2017-11-23 CN CN201721586668.4U patent/CN207505019U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106452509A (en) | Coupler for power line communication and power-over-ethernet | |
| SE1000953A1 (en) | Signal repeater system arrangement for stable data communication | |
| CN103973396A (en) | Method and device for transmitting wireless base band data and radio frequency zooming-out module RRU | |
| CN203840353U (en) | Dynamic satellite earth station carrier monitoring device | |
| CN104158670B (en) | Gigabit Ethernet bypass apparatus | |
| CN207505019U (en) | A kind of external hanging type frequency spectrum monitoring device based on DOCSIS | |
| CN101083776A (en) | Method and apparatus for monitoring operation status of broadcast television satellite transmission system | |
| CN103702356B (en) | A kind of trouble-shooter based on TDD system | |
| CN209659304U (en) | LoRa+PLC bimodulus built-in module and the communication structure for using the module | |
| CN107888147A (en) | Photovoltaic system | |
| KR20140123854A (en) | Apparatus and Method for Serial-Connected Power Line Communication | |
| CN203722709U (en) | High-definition network video device based on coaxial-cable transmission | |
| CN104702467B (en) | A kind of reverse link test method and system based on C-DOCSIS networking structures | |
| CN207638662U (en) | Service operation condition monitoring system | |
| CN103716576A (en) | EOC local-side device | |
| CN108495124A (en) | A kind of digital TV network monitoring probe system | |
| KR20220060187A (en) | Apparatus and Method for Monitoring Optical Fiber Quality | |
| CN202694561U (en) | Photovoltaic power station monitoring video and downlink communication coaxial cable transmission device | |
| CN202524383U (en) | Testing device for low-voltage power line network | |
| CN206644827U (en) | Applied to the power line carrier module on goat | |
| CN205792578U (en) | A kind of system using spark gap to press communication in realizing | |
| CN111885425B (en) | Gateway system and power grid system | |
| KR102547808B1 (en) | Apparatus for Monitoring Optical Field | |
| CN106324769B (en) | A kind of simulated light hot-swappable based on XFP receives module | |
| CN209593456U (en) | A kind of intelligence hub control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |