# Matrox Network & Wireless Cards Driver Download

- Network Theory Tutorial

- The Matrox Monarch is accessible through the IP address of the device. To find the IP address it can be done two ways. Hook up a monitor to the device via the HDMI Output. During startup the IP address will display on the monitor. Download the Matrox Monarch Finder to scan your network and give you the IP address.
- Head office 6500 Daresbury Park, Daresbury, Warrington WA4 4GE Phone: 0844 74 000 74 Fax: 0844 74 000 75 Midlands Office Northampton Science Park, Moulton Park Northampton NN3 6LG.
- Matrox® Video and 7thSense Design are pleased to announce the integration of Matrox SMPTE ST 2110 network interface controller (NIC) cards within the 7thSense range of Delta Media Servers. Using Matrox network cards, it is now possible to support multi-channel IP inputs and outputs of uncompressed video over IP.
- Matrox Video is pleased to announce that Matrox Extio 3 IP KVM extenders are now compatible with NewTek’s 3Play 3P1 IP replay solution and TriCaster TC1 live multi-camera production system. This collaboration enables broadcast facilities to create high-performance KVM-over-IP infrastructures, empowering users to connect to and control NewTek’s leading systems, and facilitate next-level, live event productions from a remote 4K or multi-display station over LAN or private WAN.

- Network Theory Useful Resources

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In the previous chapter, we discussed how to convert an electric circuit into an equivalent graph. Now, let us discuss the Network Topology Matrices which are useful for solving any electric circuit or network problem by using their equivalent graphs.

## Matrices Associated with Network Graphs

Following are the three matrices that are used in Graph theory.

- Incidence Matrix
- Fundamental Loop Matrix
- Fundamental Cut set Matrix

## Incidence Matrix

An Incidence Matrix represents the graph of a given electric circuit or network. Hence, it is possible to draw the graph of that same electric circuit or network from the **incidence matrix**.

We know that graph consists of a set of nodes and those are connected by some branches. So, the connecting of branches to a node is called as incidence. Incidence matrix is represented with the letter A. It is also called as node to branch incidence matrix or **node incidence matrix**.

If there are ‘n’ nodes and ‘b’ branches are present in a **directed graph**, then the incidence matrix will have ‘n’ rows and ‘b’ columns. Here, rows and columns are corresponding to the nodes and branches of a directed graph. Hence, the **order** of incidence matrix will be **n × b**.

The **elements of incidence matrix** will be having one of these three values, +1, -1 and 0.

If the branch current is leaving from a selected node, then the value of the element will be +1.

If the branch current is entering towards a selected node, then the value of the element will be -1.

If the branch current neither enters at a selected node nor leaves from a selected node, then the value of element will be 0.

### Procedure to find Incidence Matrix

Follow these steps in order to find the incidence matrix of directed graph.

Select a node at a time of the given directed graph and fill the values of the elements of incidence matrix corresponding to that node in a row.

Repeat the above step for all the nodes of the given directed graph.

### Example

Consider the following **directed graph**.

The **incidence matrix** corresponding to the above directed graph will be

$$A = begin{bmatrix}-1 & 1 & 0 & -1 & 0 & 00 & -1 & 1 & 0 & 1 & 01 & 0 & -1 & 0 & 0 & 1 0 & 0 & 0 & 1 & -1 & -1 end{bmatrix}$$

The rows and columns of the above matrix represents the nodes and branches of given directed graph. The order of this incidence matrix is 4 × 6.

By observing the above incidence matrix, we can conclude that the **summation** of column elements of incidence matrix is equal to zero. That means, a branch current leaves from one node and enters at another single node only.

**Note** − If the given graph is an un-directed type, then convert it into a directed graph by representing the arrows on each branch of it. We can consider the arbitrary direction of current flow in each branch.

## Fundamental Loop Matrix

Fundamental loop or **f-loop** is a loop, which contains only one link and one or more twigs. So, the number of f-loops will be equal to the number of links. Fundamental loop matrix is represented with letter B. It is also called as **fundamental circuit matrix** and Tie-set matrix. This matrix gives the relation between branch currents and link currents.

If there are ‘n’ nodes and ‘b’ branches are present in a **directed graph**, then the number of links present in a co-tree, which is corresponding to the selected tree of given graph will be b-n+1.

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So, the fundamental loop matrix will have ‘b-n+1’ rows and ‘b’ columns. Here, rows and columns are corresponding to the links of co-tree and branches of given graph. Hence, the order of fundamental loop matrix will be **(b - n + 1) × b**.

The **elements of fundamental loop matrix** will be having one of these three values, +1, -1 and 0.

The value of element will be +1 for the link of selected f-loop.

The value of elements will be 0 for the remaining links and twigs, which are not part of the selected f-loop.

If the direction of twig current of selected f-loop is same as that of f-loop link current, then the value of element will be +1.

If the direction of twig current of selected f-loop is opposite to that of f-loop link current, then the value of element will be -1.

### Procedure to find Fundamental Loop Matrix

Follow these steps in order to find the fundamental loop matrix of given directed graph.

Select a tree of given directed graph.

By including one link at a time, we will get one f-loop. Fill the values of elements corresponding to this f-loop in a row of fundamental loop matrix.

Repeat the above step for all links.

### Example

Take a look at the following Tree of **directed graph**, which is considered for incidence matrix.

The above Tree contains three branches d, e & f. Hence, the branches a, b & c will be the links of the Co-Tree corresponding to the above Tree. By including one link at a time to the above Tree, we will get one **f-loop**. So, there will be three **f-loops**, since there are three links. These three f-loops are shown in the following figure.

In the above figure, the branches, which are represented with colored lines form f-loops. We will get the row wise element values of Tie-set matrix from each f-loop. So, the **Tieset matrix** of the above considered Tree will be

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$$B = begin{bmatrix}1 & 0 & 0 & -1 & 0 & -10 & 1 & 0 & 1 & 1 & 00 & 0 & 1 & 0 & -1 & 1 end{bmatrix}$$

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The rows and columns of the above matrix represents the links and branches of given directed graph. The order of this incidence matrix is 3 × 6.

The **number of Fundamental loop matrices** of a directed graph will be equal to the number of Trees of that directed graph. Because, every Tree will be having one Fundamental loop matrix.

## Fundamental Cut-set Matrix

Fundamental cut set or **f-cut set** is the minimum number of branches that are removed from a graph in such a way that the original graph will become two isolated subgraphs. The f-cut set contains only **one twig** and one or more links. So, the number of f-cut sets will be equal to the number of twigs.

**Fundamental cut set matrix** is represented with letter C. This matrix gives the relation between branch voltages and twig voltages.

If there are ‘n’ nodes and ‘b’ branches are present in a **directed graph**, then the number of twigs present in a selected Tree of given graph will be n-1. So, the fundamental cut set matrix will have ‘n-1’ rows and ‘b’ columns. Here, rows and columns are corresponding to the twigs of selected tree and branches of given graph. Hence, the **order** of fundamental cut set matrix will be **(n-1) × b**.

The **elements of fundamental cut set matrix** will be having one of these three values, +1, -1 and 0.

The value of element will be +1 for the twig of selected f-cutset.

The value of elements will be 0 for the remaining twigs and links, which are not part of the selected f-cutset.

If the direction of link current of selected f-cut set is same as that of f-cutset twig current, then the value of element will be +1.

If the direction of link current of selected f-cut set is opposite to that of f-cutset twig current, then the value of element will be -1.

### Procedure to find Fundamental Cut-set Matrix

Follow these steps in order to find the fundamental cut set matrix of given directed graph.

Select a Tree of given directed graph and represent the links with the dotted lines.

By removing one twig and necessary links at a time, we will get one f-cut set. Fill the values of elements corresponding to this f-cut set in a row of fundamental cut set matrix.

Repeat the above step for all twigs.

### Example

Consider the same **directed graph **, which we discussed in the section of incidence matrix. Select the branches d, e & f of this directed graph as twigs. So, the remaining branches a, b & c of this directed graph will be the links.

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The **twigs** d, e & f are represented with solid lines and **links** a, b & c are represented with dotted lines in the following figure.

By removing one twig and necessary links at a time, we will get one f-cut set. So, there will be three f-cut sets, since there are three twigs. These three **f-cut sets** are shown in the following figure.

We will be having three f-cut sets by removing a set of twig and links of C_{1}, C_{2} and C_{3}. We will get the row wise element values of fundamental cut set matrix from each f-cut set. So, the **fundamental cut set matrix** of the above considered Tree will be

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$$C = begin{bmatrix}1 & -1 & 0 & 1 & 0 & 00 & -1 & 1 & 0 & 1 & 01 & 0 & -1 & 0 & 0 & 1 end{bmatrix}$$

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The rows and columns of the above matrix represents the twigs and branches of given directed graph. The order of this fundamental cut set matrix is 3 × 6.

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The **number of Fundamental cut set matrices** of a directed graph will be equal to the number of Trees of that directed graph. Because, every Tree will be having one Fundamental cut set matrix.