KR100392032B1 - a digital signal distributer module - Google Patents

Abstract

By configuring two systems in one module, a digital signal distributor module for reducing the cost due to the high density of the module, increasing the distribution capacity of the distributor, 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

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital signal splitter module, and in particular, by configuring two systems in one module, a digital signal splitter for reducing the cost due to the high density of the module, increasing the distribution capacity of the splitter, and maintaining the stability of signal transmission 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 has been invented to solve the above problems, in forming a distributor formed by continuously coupling the modules in a row, input and output terminals for inputting and outputting different signals in one module and switching input and output terminals for switching them The purpose of the present invention is to provide a digital signal distributor module for increasing the distribution capacity of a distributor by reducing the cost of maintenance and new installation costs and accommodating a high density line by configuring two having a system.

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) consisting 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 < RTI ID = 0.0 >

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

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

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

4 is a system diagram for showing the 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: switching input terminal 113: switching output terminal 114: monitor terminal 120: second system 122: switching output terminal 123: switching input terminal

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

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

The present invention for achieving such an object,

A housing made of a die casting material;

A first system comprising a first switching input and output terminal formed at the front of the housing and a monitor terminal for monitoring a signal applied to the first switching input and output terminals;

A second system comprising a second switching input and output terminal formed in front of the housing and arranged in parallel with the first system and a monitor terminal for monitoring a signal applied to the second switching input and output terminals;

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

A second signal input and output terminal of a BNC type formed at the rear of the housing and electrically connected to the switching 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 electrically connecting between the first signal input and output terminals and the second signal input and output terminals of the first system and the second system and having a multi-vapor board structure.

The digital signal distributor module according to the present invention increases the distribution capacity of the distributor by accommodating high-density lines and cost reductions such as maintenance and new installation costs due to the higher 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 invention, Figure 3 is a circuit diagram for explaining the operation of the distributor module according to the invention, Figure 4 is an installation state of the distributor according to the 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 the first transfer input and output terminals 112 and 113 and the first transfer output terminal 113 in front of the housing 100 made of a conductive die casting material. Monitor terminal for monitoring the signal output of the first system 110 and the second switching input and output terminals 122 and 123 and the second switching output terminal 123 composed of the monitor terminal 114 for monitoring the signal output of A second system 120 consisting of 124 is formed in parallel.

On the rear of the housing 100, a BNC type electrical member electrically connected to the first switching input and output terminals 112 and 113 of the first system 110 and the second switching input and output terminals 122 and 123 of the second system 120. The first signal input and output terminals 115 and 116 and the second signal input and output terminals 125 and 126 of the BNC type are formed with steps, respectively.

The first system 110 and the second system 120 between the first system 110 and the second system 120 and the first signal input and output terminals 115 and 116 and the second signal input and output terminals 125 and 126. ) And a printed circuit board (PCB) 130 for electrically connecting the first signal input and output terminals 115 and 116 and the second signal input and output terminals 125 and 126.

Here, in the circuit arranged on the printed circuit board 130 of the digital signal splitter module 100 according to the present invention, as shown in FIG. 3, the first and second signal input terminals 115. It is connected to the second switching output terminal 113, 122, and the first and second switching input terminal 112, 123 is formed to be connected to the first and second signal output terminal 116, 126. That is, the first system 110 The first signal output terminal 116 is electrically connected to the first switching input terminal 112 of), and the second signal input terminal 125 is connected to the second switching output terminal 113 of the first system 110. The monitor terminal 114 of the first system 110 is connected through the supervisory resistor R2 branched between the first switching output terminal 113 and the second signal input terminal 125.

In addition, the first signal input terminal 115 is electrically connected to the second switching output terminal 122 of the second system 120, and the second switching input terminal 123 of the second system 120 is second. The signal output terminal 126 is electrically connected, and the monitor terminal of the second system 120 through the supervisory resistor R2 branched between the second switching output terminal 122 and the first signal input terminal 115. 124 is connected.

Here, the monitoring resistor R2 electrically connected to the monitor terminals 114 and 124 of the first system and the second system is at a level lower than the signal level input through the first and second signal input terminals 115 and 125. It can be set to (-21dB ± 1.5 dB) to monitor the input signal without affecting the active line.

Therefore, as shown in FIG. 4, a plurality of digital signal splitter modules according to the present invention are connected in parallel between the A side equipment and the B side equipment transmission and reception equipment of the digital multiplexing apparatuses that transmit and receive data with each other. In the process of transmitting / receiving data through the digital signal splitter 100, if the abnormal line occurs while continuously monitoring whether there is an abnormal line through the monitor terminal of the digital signal splitter module, switching of the digital signal splitter module that has occurred If one side of the transfer cable is connected to the output terminal and the other side of the transfer cable cord is connected to the transfer input terminal of the normal digital signal splitter module, the data flow is transferred from the abnormal line to the normal line so that the data can be continuously transmitted and disconnected. You can send and receive data.

That is, between the first and second switching input and output terminals 112, 113, 122, and 123 of the first system 110 and the second system 120, as shown in FIGS. ) Is formed by the termination resistor R1 operating. Therefore, when the switching cable cord is inserted into the first and second switching input and output terminals 112 and 113 (122 and 123), the termination resistor R2 is operated by the pin switch to apply the data signal to the switching code.

Here, the first and second switching input and output terminals 112, 113, 122, 123 and the monitor terminals 114, 124 of the first system 110 and the second system 120 of the digital signal splitter module according to the present invention. As shown in Figure 5, the ring-shaped body (G) that performs the role of the ground around the signal line (S) on the longitudinal axis is formed to protrude a certain length to prevent attenuation of the stability and loss of signal transmission.

In addition, the digital signal splitter module according to the present invention can be accommodated with a line increase while being increased to have the first and second transfer input and output terminals 112, 113, 122 and 123 from one conventional switching input and output terminal. The line circuit capacity is increased.

Therefore, the printed circuit board 140 of the digital signal splitter module according to the present invention has the first switching input / output terminals 112 and 113 and the first signal output terminal (1) of the first system 110, as shown in FIG. 116 and the electrical connection of the second signal input terminal 125 and the first switching input and output terminals 122 and 123 and the first signal input terminal of the second system 120 as shown in FIG. 115) and the second signal output terminal 126 is electrically connected 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 into one module and a preliminary input / output terminal for switching the same. 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 comprising a first switching input and output terminals 112 and 113 formed in front of the housing 100 and a monitor terminal 114 for monitoring a signal applied to the first switching input and output terminals 112 and 113. 110; For monitoring the signals applied to the second switching input and output terminals 122 and 123 and the second switching input and output terminals 122 and 123 formed in front of the housing 100 and arranged in parallel with the first system. A second system 120 composed of monitor terminals 124; The first signal input and output terminals of the BNC type formed at the rear of the housing 100 and electrically connected to the switching input and output terminals 112 and 122 of the first system 110 and the second system 120 ( 115,116); It is formed at the rear of the housing 100 and electrically connected to the switching 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 signal 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 signal input and output terminals 115 and 116 and the second signal input and output terminals 125 and 126 to electrically connect the multi-vapor board structure Digital signal distributor module comprising a printed circuit board 130 having a. The method of claim 1, wherein the pin switch 140 is connected between the first and second switching input and output terminals 112, 113, 122, and 123 of the first system 110 and the second system 120, respectively. Digital signal divider module, characterized in that the termination resistor (R1) in operation is formed. The method of claim 1, wherein the first and second switching 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 longitudinally axial. Digital signal distributor module, characterized in that the ring-shaped body (G) that performs the role of ground around the signal line (S) of the protruding length. 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.