Signal Quality and Error Control
The QSFP-40G-SR-BD Cisco QSFP+ Multi Mode 40 Gigabits Transceiver Module is a high-performance transceiver designed for use in 40 Gigabit Ethernet (40GbE) applications over multi-mode fiber (MMF) cable. Here are some details about signal quality and error control in this transceiver module:
Signal Quality: The QSFP-40G-SR-BD transceiver uses a four-channel parallel design, where each channel transmits and receives signals over a separate fiber strand in the MMF cable. The module supports transmission distances of up to 150 meters over OM4 MMF and up to 100 meters over OM3 MMF.
To ensure high signal quality and low bit error rates, the transceiver uses advanced digital signal processing (DSP) technology. The DSP algorithms compensate for impairments caused by the MMF cable, such as modal dispersion and attenuation, to ensure that the received signal is clear and error-free. The transceiver also supports optical power monitoring, which allows the user to monitor the power levels of the transmitted and received signals in real-time and ensure that they are within the acceptable range.
Error Control: To prevent errors in the transmitted data, the QSFP-40G-SR-BD transceiver uses a variety of error control mechanisms, including:
- Forward Error Correction (FEC): FEC is a technique that adds redundancy to the transmitted data to detect and correct errors that may occur during transmission. The QSFP-40G-SR-BD transceiver supports the IEEE 802.3ba standard FEC, which uses a 544-bit codeword to protect each 512-bit block of data.
- Cyclic Redundancy Check (CRC): The transceiver also uses CRC, which is a simple error detection mechanism that calculates a checksum of the transmitted data and compares it with the received checksum to detect errors.
- Automatic Laser Shutdown (ALS): The QSFP-40G-SR-BD transceiver also features ALS, which automatically shuts down the laser transmitter in the event of a fault, such as excessive optical power or high temperature. This helps prevent damage to the transceiver and the connected equipment.
Reliability of 40GBPS Module
The Cisco QSFP-40G-SR-BD is a highly reliable transceiver module that is designed to provide consistent and reliable performance in a variety of networking environments. It is equipped with advanced features to help ensure the integrity of the data being transmitted, such as error correction and packet retransmission. The module is also designed to be hot-swappable, so it can be easily added or removed from the network without disrupting the operation of the network. Additionally, the QSFP-40G-SR-BD is tested to ensure that it meets a high level of quality and reliability, further contributing to its overall dependability. Overall, the QSFP-40G-SR-BD is a reliable and robust transceiver module that can be trusted to deliver consistent and reliable performance in a variety of networking applications.
Power Consumption of Multi Mode Transceiver Module
The QSFP-40G-SR-BD Cisco QSFP+ Multi-Mode Transceiver Module is a high-performance transceiver module designed for use in 40 Gigabit Ethernet links over multi-mode fiber. This transceiver module operates on a 40 Gigabit Ethernet link using a wavelength of 850 nm and supports transmission distances of up to 150 meters over OM4 multi-mode fiber.
The power consumption of the QSFP-40G-SR-BD transceiver module is typically around 1.5 watts. The actual power consumption may vary depending on the specific configuration of the network and the type of equipment being used.
It is important to note that power consumption can have a significant impact on the overall performance of a network, as excessive power consumption can lead to overheating and reduced system reliability. To ensure optimal performance and reliability, it is important to select a transceiver module that is designed to operate within the specific power requirements of your network infrastructure.
Main Specification about this Cisco QSFP-40G-SR-BD
- Manufacturer: Cisco
- Model Number or SKU# QSFP-40G-SR-BD
- Product Line Legrand
- Product Type: QSFP+ Transceiver Module
Technical Information of Transceiver Module
- Transceiver Type: BX
- Reach: 150m
- Connector: Duplex LC
- Module Type: QSFP+
- Wavelength: 832nm to 918nm
- Media: MMF
- Application/Usage Optical Network
- Application/Usage Data Networking
Performance for QSFP+ Multi-Mode Transceiver
- Data Link Protocol: 40 Gigabit LAN
- Data Transfer Rate: 40 GBPS
- Optical Wave Length: 850 nm
- Max Transfer Distance: 492 Feet
- Transmitter Power: -4~5dBm
- Receiver Sensitivity :<-6dBm
- Powerbudget: 6dB
- Power Consumption: 3.5 Watt
- Extinction Ratio: 3.5dB
- Min Operating Temperature: 50 °F
- Max Operating Temperature: 158 °F
- Humidity Range Operating: 5 - 95%
Dimensions & Weight
- Form Factor: Hot-swappable
- Height: 0.5 Inch
- Width: 0.7 Inch
- Depth: 2.9 Inch
- Cisco Nexus 9000 Series Switches are compatible with MSA (Multi-Source Agreement) standards.
- They are also compliant with green standards.
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Building a fiber-optic network calls for a lot of planning and consideration of many factors. Transceivers are part of the many devices used to build optical fiber systems. A transceiver serves the combined roles of a transmitter and a receiver in that it transmits and receives signals. They are most common in communication equipment such as cellular phones, cordless telephone sets, and radio. Small form factors are required as networks become dense and space is limited, which sees transceivers included in chipsets.
In local area networks (LAN), a transceiver is used to connect a computer to printers and other devices on the network. Usually, the transceiver is integrated into the Network Interface Card (NIC)
Typical Roles of a Transceiver
- Used to convert frequencies from IF to RF.
- Widespread use in wireless communication to transmit data – voice, data, and video.
- RF transceivers are used in communication devices to support radio and TV signal transmission, digital signals transmission, and satellite communication.
- Collision detection – detection of simultaneous signals on the network.
- Transceivers can be deployed to provide a jabber function to interrupt transmission of long data stream outputs.
Look no further for all types of transceivers including fiber optic transceivers, wireless transceivers, Ethernet transceivers, and RF transceivers. All these transceivers have different characteristics and support full-duplex communication, but the principle behind their work remains the same. Different types of transceivers will have varying numbers of ports used in transceiver networking connections.
RF Transceivers: these devices are used to transmit video or voice data over a wireless medium. Commonly used for satellite communication, radio transmission, and ITE/WiMax/WLAN networks. The radio transceiver works by silencing the receiver when it is transmitting. There is an electronic switch that facilitates the connection of both the receiver and transmitter on the same antenna. The switch protects the receiver from damage that may be caused by the transmitter output.
Fiber Optic Transceivers: Also referred to as optical modules or fiber optical transceivers. Used to transmit data in fiber optic technology. The network must also have electronic components to encode or decode data into light signals.
Ethernet Transceivers: Basically used to connect electronic devices in a network so that they are able to transmit and receive data. It is also referred to as a media access unit (MAU). The best application of these transceivers is in the specification of IEEE 802.3 and Ethernet. Ethernet transceivers will detect a collision, provide Ethernet interface processing, convert digital data, and provide access to the network.
Wireless Transceivers: Wireless transceivers are a fundamental component necessary for data delivery in wireless networks. These transceivers have two layers. The physical layer has a baseband processor and RF front end. The processor converts a bitstream to a collection symbol flow for data transmission. The second layer is a MAC layer for link traffic control in contacting wireless links, improving data throughput, and preventing collisions.
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