A fiber optic transceiver is a conversion between an electrical interface and an optical interface of an Ethernet. The fiber transceiver can be configured with one or more Ethernet electrical ports and one or more optical interfaces, which extends the Ethernet transmission distance from 100 meters to 2 kilometers (multimode fiber) or 120 kilometers (single) Mode fiber). It can easily interconnect multiple motherboard servers, repeaters, hubs, terminals and multiple terminals. It adopts mature switching core, equipped with multiple fiber interfaces, and supports hot swapping. It is flexible, efficient and reliable. Applicable to telecommunications, broadcasting, broadband networks, millions of high-definition video surveillance and other network environments that require high performance and high reliability.
Schematic diagram of the typical scheme of the optical transceiver:
Solution 1: Fiber point-to-point networking
Option 2: Fiber point-to-multipoint networking
Ring backbone
The ring backbone network uses the SPANNING TREE feature to construct the backbone of the metropolitan area. This structure can be transformed into a mesh structure, which is suitable for a high-density central cell on the metropolitan area network to form a fault-tolerant core backbone network. The ring backbone network supports IEEE.1Q and ISL network features to ensure compatibility with most mainstream backbone networks, such as VLANs and TRUNKs across switches. The ring backbone network can form a broadband virtual private network for the financial, government, education and other industries.
Chain backbone
The chain backbone network can save a large amount of backbone light by using the chain connection. It is suitable for constructing a high-bandwidth and low-cost backbone network at the edge of the city and its suburban counties. This mode can also be used for highways, oil transportation, and transmission. Environment such as lines. The support of the IEEE802.1Q and ISL network features of the chain backbone network ensures compatibility with most backbone networks and can be used to build broadband virtual private networks for the financial, government, and education industries. The chain backbone network is a multimedia network that can provide integrated transmission of images, voice, data and real-time monitoring.
User access system
The user access system utilizes 10Mbps/100Mbps adaptive and 10Mbps/100Mbps automatic conversion function, which can be connected to any user equipment without providing multiple optical transceivers, which can provide a smooth upgrade solution for the network. At the same time, the half-duplex/full-duplex adaptive and half-duplex/full-duplex automatic conversion function can be used to configure an inexpensive half-duplex HUB on the user side, which reduces the networking cost of the user terminal by several times and improves the network operator. Competitiveness.
Tower Crane Pulleys
Tower cranes typically use a combination of fixed and movable pulleys to lift and lower heavy loads. The pulleys are usually attached to the jib or boom of the crane and are used to change the direction and increase the mechanical advantage of the lifting system.
Some common types of pulleys used in tower cranes include:
1. Fixed Pulleys: These are stationary pulleys that are mounted at a fixed point on the crane. They change the direction of the lifting force and help distribute the load evenly.
2. Movable Pulleys: These pulleys are attached to a movable block that can be raised or lowered along the jib or boom of the crane. They provide additional mechanical advantage and allow for easier lifting of heavy loads.
3. Trolley Pulleys: These pulleys are used in conjunction with a trolley system that allows the crane to move horizontally along the jib or boom. The trolley pulleys help distribute the load evenly and provide smooth movement of the crane.
4. Counterweight Pulleys: Tower cranes often use a counterweight system to balance the load being lifted. Counterweight pulleys are used to attach the counterweights to the crane and ensure proper balance and stability.
It's important to note that the specific configuration and number of pulleys used in a Tower Crane can vary depending on the crane model and lifting capacity.
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