QUICKSTART GUIDE

7 Hubs and Switches

Two of the major Ethernet LAN components are "hubs" and "switches." There are many advantages of a switch over a hub. Hubs just transfer information from one port to all other ports. Since a hub has no way of handling media contention, collisions can occur requiring all segments connected to a hub to work in a half duplex mode. Switches on the other hand have the capability of buffering messages allowing full duplex operation. A switch will also learn the MAC addresses of devices connected to each of it’s ports and will then route messages to just the port to which the destination device is connected, thereby reducing data traffic on the network. Switches that have configuration firmware to customize the switch and traffic are called “managed switches”. Switches that have fixed configurations are referred to as “unmanaged switches”.

7.1 Fiber Optic Ethernet:

Fiber optic Ethernet is rapidly becoming the medium of choice in applications where longer distances and immunity to EMI are of importance, such as power system applications. However, the higher cost and the difficulty of terminating fiber cables allows twisted pair to continue to play a roll were appropriate.

The wavelengths of light used in fiber optic communication are 820, 1300 and 1550 nanometers (nm) because it has been found that these wavelengths of light are attenuated the least as they travel through the fiber optic medium. Compatible ports must operate at the same wavelength of light and be linked with appropriate fiber. There are two categories of fiber optic cable: "multi-mode" and "single-mode." Note that until recently, the cable used with 820nm wavelength light was offered only in multi-mode while 1300nm wavelength light uses both single and multi-mode compatible cable. Cable compatible with 1550nm wavelength light is offered only in single mode.

7.1.1 Wavelengths of light

 

Multi-Mode

Single-Mode

820nm

X

X

1300nm

X

X

1550nm

N/A

X

Note that both devices must use the same wavelength of light.

MULTILINK ETHERNET COMMUNICATIONS SWITCH – QUICKSTART GUIDE

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GE 1601-9026-A3 quick start Hubs and Switches, Fiber Optic Ethernet, Wavelengths of light

1601-9026-A3 specifications

The GE 1601-9026-A3 is a sophisticated and versatile unit that has garnered attention in various industrial applications due to its reliability and advanced features. This product, part of the GEs extensive range of control systems, is designed to meet the needs of modern industries, promoting efficiency and performance.

One of the main features of the GE 1601-9026-A3 is its robust architecture, which ensures high availability and redundancy. This design minimizes downtime and enhances operational continuity, a critical requirement for industries that rely on continuous processes. The unit incorporates state-of-the-art processing capabilities that enable it to handle complex computations and large datasets with ease.

A significant characteristic of the GE 1601-9026-A3 is its advanced communication protocols. It supports various industrial communication standards, including Ethernet, Modbus, and TCP/IP, making it highly compatible with existing infrastructure. This interoperability allows for seamless integration into diverse systems, facilitating data exchange and real-time monitoring.

The device also features an intuitive user interface, allowing operators to navigate easily through its functionalities. The graphical display often includes real-time data visualization tools, enhancing operators' ability to monitor system performance and respond promptly to any anomalies. This user-centric design contributes to reduced training time and improved operational efficiency.

In terms of technologies, the GE 1601-9026-A3 incorporates cutting-edge automation features, including programmable logic controllers (PLCs) and advanced algorithms for predictive maintenance. These technologies help in preemptively identifying potential issues before they escalate, reducing maintenance costs and enhancing equipment lifespan.

Moreover, the unit is designed with a focus on energy efficiency, featuring intelligent energy management systems that optimize power consumption. This not only contributes to cost savings but also aids in reducing the environmental footprint of industrial operations.

Durability is another characteristic that stands out with the GE 1601-9026-A3. Built to withstand harsh industrial environments, this unit is resistant to temperature fluctuations, dust, and moisture, ensuring reliable performance in demanding conditions.

In summary, the GE 1601-9026-A3 exemplifies cutting-edge technology fused with practicality, offering a range of features designed to enhance operational efficiency, reliability, and ease of use. Its advanced communication capabilities, durability, and focus on energy efficiency make it a prime choice for industries looking to modernize their control systems.