KR200239746Y1 - a digital signal distributer module - Google Patents

Abstract

By configuring two systems in one module, a digital signal distributor module for reducing the cost and increasing the distribution capacity of the distributor due to the high density of the module and maintaining the stability of signal transmission is disclosed. The present invention, a housing made of a die-casting material; A first system comprising a pair of output terminals and a monitor terminal formed in front of the housing; A second system formed in front of the housing and arranged in parallel with the first system, the second system comprising a pair of input terminals and a monitor terminal; A first input and output terminal of a BNC type formed at a rear of the housing and electrically connected to the first system and the second system; A second input and output terminal of a BNC type arranged at a step with the first input and output terminal; And a printed circuit board that electrically connects the first system and the second system with the first input and output terminals and between the second input and output terminals, wherein the RF cable is formed in a multilayer or double-sided board structure. .

Description

Digital signal distributer module

The present invention relates to a digital signal splitter module, and in particular, by configuring two systems in one module, cost reduction due to the high density of the module, increased distribution capacity of the splitter, and digital signal splitter for maintaining signal transmission stability It is about a module.

In general, a digital signal distributor is installed in the middle of a line between multiplexing devices such as between a digital multiplexing device or between a digital multiplexing device and an optical end station device so that data can be transmitted and received smoothly, and at the time of occurrence of an abnormal line Data transmission and reception are continued without disconnection of data transmission / reception, test, monitoring (MON), etc.

Such a divider is formed by continuously arranging several modules in a line in a fixed frame according to a track condition. 1 is a perspective view for showing a conventional digital signal distributor.

As shown in FIG. 1, one module of a conventional digital signal distributor forms a BNC terminal 12 and 13 for connecting data between devices in front of the housing 10 and performing input and output of data. A monitor terminal 14 is formed at the rear of the housing 10 to monitor the track. In addition, the rear of the housing 10 is connected to the input and output terminals 12, 13 of the BNC type, and in case of abnormality in the line, the preliminary input and output terminals 15, 16 are formed to connect the spare lines. do.

Here, a terminating resistor (not shown) is formed between the preliminary input and output terminals 15 and 16 to operate a junction of a pin switch (not shown), and the switching cable is provided at the preliminary input and output terminals 15 and 16. When the cord is inserted, the termination resistor (not shown) is operated by the pin switch, so that the data signal applied to the input and output terminals 12 and 13 is applied to the switching code.

That is, in the process of data transmission and reception, if an abnormal line occurs while continuously checking whether the line is abnormal through the monitor terminal 14, one side of the cord of the switching cable is connected to the preliminary output terminal of the failed module. When the other side of the transfer cable cord is coupled to the spare input terminal of the normal module, the data flow is switched so that data can be continuously transmitted and received without interruption of data transmission and reception.

However, the distributor has a problem in that the BNC terminal and the modules having the preliminary input and output terminals are continuously installed in parallel, so that the installation is restricted in many places. In other words, as the communication network continues to increase, more dense lines have to be accommodated.

The present invention is designed to solve the above problems, in forming a distributor formed by continuously coupling the modules in series, having an input / output terminal for inputting and outputting different signals in one module and a spare input / output terminal for switching the same. The purpose of the system is to provide a digital signal distributor module for increasing the distribution capacity of the distributor by reducing the cost of maintenance and new installation costs due to the high density of the module and accommodating the high density line.

Another object of the present invention is to form a ground body around the signal line of the preliminary input and output terminals, and the stability of signal transmission by forming a printed circuit board (PCB) composed of a multilayer board between the input and output terminals and the preliminary input and output terminals. It is an object of the present invention to provide a digital signal splitter module for maintaining the "

1 is a perspective view showing a conventional module for a digital signal distributor.

Figure 2 is a cross-sectional view for showing the internal configuration of the module for the dispenser according to the present invention.

3 is a circuit diagram for explaining the operation of the distributor module according to the present invention.

4 is a system diagram for showing an installation state of the dispenser according to the present invention.

FIG. 5 is a cross-sectional view illustrating a shape of a preliminary input / output terminal in the distributor module of FIG. 2.

6 (a) and 6 (b) are cross-sectional views illustrating the structure of a printed circuit board (PCB) of a distributor module according to the present invention.

<Description of symbols for major symbols in the drawings>

100 housing 110 first system

112,113: Reserved I / O terminal 114: Monitor terminal

120: second system 122,123: preliminary input and output terminals

124: monitor terminal 115, 116: first input and output terminal

125, 126: second input and output terminal 130: printed circuit board

The present invention for achieving the above object,

A housing made of a die casting material;

A first system formed in front of the housing, the first system including a pair of output terminals and a monitor terminal for monitoring a signal output of the output terminal;

A second system formed in front of the housing and arranged in parallel with the first system, the second system comprising a pair of input terminals and monitor terminals for monitoring signal input of the input terminals;

A first input and output terminal of a BNC type formed at a rear of the housing and electrically connected to a pair of input and output terminals of the first system and the second system;

A second input and output terminal of a BNC type formed at a rear of the housing and electrically connected to a pair of input and output terminals of the first system and the second system and arranged in parallel with the first input and output terminals; And,

It includes a printed circuit board that electrically connects the first and second systems with the first input and output terminals and the second input and output terminals and has a multi-vapor board structure.

The digital signal divider module according to the present invention increases the distribution capacity of the divider by accommodating high-density lines and cost savings such as maintenance and new installation costs due to high density.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a cross-sectional view for showing the internal configuration of the distributor module according to the present invention, Figure 3 is a circuit diagram for explaining the operation of the distributor module according to the present invention, Figure 4 is an installation state of the distributor according to the present invention System diagram to show.

In addition, Figure 5 is a cross-sectional view for explaining the shape of the preliminary input and output terminals in the splitter module of Figure 2, Figure 6 (a) and (b) shows the structure of a printed circuit board (PCB) of the splitter module according to the present invention This is a cross-sectional view to show.

As shown in FIG. 2, the digital signal splitter module according to the present invention has a pair of output terminals 112 and 113 and a signal output of the output terminals 112 and 113 at the front of the housing 100 made of a conductive die casting material. A first system 110 composed of a monitor terminal 114 for monitoring and a second system 120 composed of a pair of input terminals 122 and 123 and a monitor terminal 124 for monitoring signal input of the input terminals 122 and 123; ) Are formed in parallel.

At the rear of the housing 100, the first input and output terminals 115 and 116 of the BNC type and the BNC are electrically connected to the output terminals 112 and 113 of the first system 110 and the input terminals 122 and 123 of the second system 120. Type second input and output terminals 125 and 126 are formed with steps, respectively.

Between the first system 110 and the second system 120 and the first input and output terminals 115 and 116 and the second input and output terminals 125 and 126, the first system 110 and the second system 120 A printed circuit board (PCB) 130 is formed to electrically connect the first input and output terminals 115 and 116 and the second input and output terminals 125 and 126.

Here, the circuit arranged on the printed circuit board 130 of the digital signal splitter module 100 according to the present invention, as shown in Figure 3, the output terminal 112, 113 of the first system 110, respectively, the first output terminal 116 and the second output terminal 125 are connected to each other via a supervisory resistor R2 branched between one output terminal 113 and the second output terminal 125 of the first system 110. 1 Output monitor terminal 114 of system 110 is connected.

In addition, a first input terminal 115 and a second input terminal 126 are connected to the input terminals 122 and 123 of the second system 120, respectively, and one input terminal 123 of the second system 120 is connected. ) And the input monitor terminal 124 of the first system 110 is connected through the monitoring resistor R2 branched between the second input terminal and the second input terminal 126.

Here, the supervisory resistor R2 electrically connected to the output monitor terminal 114 and the input monitor terminal 124 is lower than the signal level output through the input and output terminals 125 and 126 (-21 dB ± 1.5 dB). You can monitor the incoming and outgoing signals within the range that does not affect the operating line.

Therefore, as shown in Figure 4, the digital signal splitter module according to the present invention is connected to a plurality of digital signal splitter modules according to the present invention in the A and B equipment of the digital multiplexing devices for transmitting and receiving data to each other In the process of connecting and receiving data through the input and output terminals 116 and 125 of the distributor 100 and the input and output terminals 115 and 126 of the counterpart digital signal distributor 100 through a coaxial cable C, If an abnormal line occurs while continuously auditing the line through the monitor terminal of the digital signal splitter module, connect one side of the cord of the transfer cable to the spare output terminal of the faulty module and connect to the spare input terminal of the normal module. When the other side of the switching cable cord is combined, the data flow is transferred from the abnormal line to the normal line so that the data can be transmitted without interruption. In general, data can be transmitted and received.

That is, between the input and output terminals 112, 113, 122, 123 of the first system 110 and the second system 120, as shown in Figure 2, the termination resistor that is operated by the bonding of the pin switch 140 (R1) is formed. Therefore, when the transfer cable cord is inserted into the input and output terminals 112 and 113 (122 and 123), the termination resistor R2 is operated by the pin switch, so that the data signal applied to the input and output terminals is applied as the transfer code.

Here, the input and output terminals 112, 113, 122 and 123 and the monitor terminals 114 and 124 of the first system 110 and the second system 120 of the digital signal splitter module according to the present invention are as shown in FIG. Likewise, a ring-shaped body G, which serves as a ground around the signal line S on the longitudinal axis, is formed to protrude a certain length to prevent attenuation of signal transmission stability and loss.

In addition, the digital signal divider module according to the present invention is increased to have the first input and output terminals 115 and 116 and the second input and output terminals 125 and 126 in a conventional pair of input and output terminals to accommodate the line increase. The number of line circuits that can be increased.

Therefore, the printed circuit board 140 of the digital signal splitter module according to the present invention has the output terminals 112 and 113, the first output terminal 116 and the first output terminal of the first system 110 as shown in FIG. Electrical connection of the two output terminals 125 and the input terminals 122 and 123 of the second system 120 and the first input terminal 115 and the second input terminal 126 as shown in FIG. The electrical connection is performed through a separate printed circuit board.

In other words, as shown in Figs. 6A and 6B, since signal lines cross each other, the signal lines intersect each other to reduce the interference between the signals by forming a multilayer (ground-signal line-ground-ground-signal line-ground). Ground through-holes (G) were formed between them to reduce reception loss and improve insulation.

As described above, the digital signal splitter module according to the present invention reduces transmission loss and doubles the line capacity by using a multilayer printed circuit board.

As described above, the digital signal splitter module according to the present invention comprises two systems having input / output terminals for inputting and outputting different signals to and from the input / output terminals for switching the same, thereby maintaining maintenance due to the high density of the modules. Cost savings such as new installation costs and high-density lines increase the distribution capacity of the distributor and maintain the stability of signal transmission by forming a printed circuit board (PCB) consisting of multilayer boards between terminals. .

Although the preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited thereto and may be improved or modified by those skilled in the art within the scope of the technical idea of the present invention.

Claims (4)

A housing 100 made of a die casting material; A first system (110) formed at the front of the housing (100) and comprising a pair of output terminals (112, 113) and a monitor terminal (114) for monitoring signal output of the output terminals (112, 113); A second formed in front of the housing 100 and arranged in parallel with the first system and comprising a pair of input terminals 122 and 123 and a monitor terminal 124 for monitoring signal input of the input terminals 122 and 123; System 120; First input and output terminals 115 and 116 of the BNC type formed at the rear of the housing 100 and electrically connected to the pair of input and output terminals 112 and 122 of the first system 110 and the second system 120. ); It is formed at the rear of the housing 100 and electrically connected to a pair of input and output terminals 113 and 123 of the first system 110 and the second system 120, and the first input and output terminals 115 and 116. Second input and output terminals 125 and 126 of the BNC type arranged in parallel with a step); And, The first system 110 and the second system 120 and the first input and output terminals 115 and 116 and the second input and output terminals 125 and 126 are electrically connected and have a multi-substrate structure Digital signal distributor module comprising a printed circuit board (130). The terminal resistor R1 of claim 1, wherein the terminal resistor R1 operates by the pin switch 140 being connected between the pair of input terminals 112, 113, 122, and 123 of the first system 110 and the second system 120, respectively. Digital signal distributor module characterized in that is formed. 2. The signal line of claim 1, wherein the pair of input and output terminals 112, 113, 122, 123, and the monitor terminals 114, 124 of the first system 110 and the second system 120 are connected to each other. S) Digital signal distributor module, characterized in that the ring-shaped body (G) to perform the role of the ground around the predetermined length protruding. The digital printed circuit board of claim 1, wherein the printed circuit board 140 forms a ground through-hole G between each signal line S to reduce reception loss and improve insulation. Signal splitter module.