2013年12月11日星期三

Compliance 10G SFP+ cables assembly are able

10GbE SFP+ Direct Attach Copper Cables provide affordable 10-Gigabit Ethernet connectivity with any SFP+ enabled port. Each SFP+ cable utilizes an integrated 20-position board-as-connector design with zinc die-cast backshells for superior EMI performance and minimal insertion loss. Our SFP+ cables are assembled with industry-leading 30 AWG twinaxialA 10-Gigabit Small Form-Factor Pluggable (SFP+) is a compact optical transceiver that can operate at speeds of up to 10 gigabits per second. Autonegotiation is enabled by default on the sfpcables.com 10G SFP+ cables into which you insert your 10G SFP+ cables. As soon as a link between the port and the network is established, the mode is matched on both ends of the cable and for 10G SFP+ transceivers, the speed is also autonegotiated. 2-pair wire.

2013年12月10日星期二

OM1 Duplex fiber optic cable types result in variations

Fibers come in several different configurations, each ideally suited to a different use or application. Early fiber designs that are still used today include single-mode and multimode fiber. Since Bell Laboratories invented the concept of application-specific fibers in the mid-1990s, fiber designs for specific network applications have been introduced. These new fiber designs – used primarily for the transmission of communication signals – include Non-Zero Dispersion Fiber (NZDF), Zero Water Peak Fiber (ZWPF), 10-Gbps laser optimized multimode fiber (OM1 Duplex fibers), and fibers designed specifically for submarine applications. Specialty fiber designs, such as dispersion compensating fibers and erbium doped fibers, perform functions that complement the transmission fibers. The differences among the different transmission fiber types result in variations in the range and the number of different wavelengths or channels at which the light is transmitted or received, the distances those signals can travel without being regenerated or amplified, and the speeds at which those signals can travel.For these parallel systems, IEEE set an objective of a minimum reach of 100 meters (m), specifically on OM3 fiber (OM1 Duplex  and OM2 fibers will not be supported in the 40 Gb/s and 100 Gb/s standard). Because the 100 m distance is expected to cover only about 85 percent of data center links, the Task force subsequently adopted OM4, capable of reaching 125 m. Although the additional 25 m may seem insignificant, it will support the majority of the remaining access to distribution and  distribution to core links in large data centers.

2013年12月9日星期一

MiniSAS Cables be sure to restrain the cable

The High Routability Internal MiniSAS Cables Assemblies are not just for tightly packaged systems. The high performance SL8800 Series Cable used in the construction of these assemblies also provides excellent transmission properties, allowing your signals to go the distance. The excellent performance of the cable may allow an even longer cable to be used. This performance benefit will stretch your loss budget, allowing you to use extra length to route the cable through a more convenient location, out of the way of airflow, or around difficult obstructions.High Routability MiniSAS Cables Assemblies for 8F36 and 8F68 meet SAS  performance requirements, while HD MiniSAS, Series 8U meets SAS 3.0 requirements. Whether or not you need the routability of these cables, they have the performance to help keep your system running at top speed. If you need a little extra “edge” in your MiniSAS 8088 environment or you have a challenging packaging situation, look at the 3M High Routability MiniSAS Cables Assemblies. 3M has tested these assemblies in folded configurations, and each fold impacts the impedance at that location by approximately only 1 ohm, well within the tightest impedance specifications (and note that the impedance at each fold is not cumulative, but is only a variation at that point). Similarly, S-parameter performance metrics are not degraded, and the cable assemblies still pass SAS 2.1 and SAS 3.0 criteria, even with multiple folds. Should your design require any folding, be sure to restrain the cable with the appropriate cable clamps to prevent repeated flexure at the folds.

2013年12月8日星期日

mainly used in SDH SFP to the frame structure

The optical transceiver module is becoming more integrated, so the function of 10G Ethernet optical interface can be achieved by an optical module. 10G optical modules include optical / electrical conversion, clock recovery and synchronization, multiplexing / demultiplexing, 64B/66B codec, WIS, 8B/10B encoding and decoding sub-function modules. LIGHT READING magazine, according to a research report shows, 10G optical modules will be the most market potential for the next few years, optical devices. Now used widely in the 10G optical modules are the following: 300pin, Xenpak , Xpak, X2 and XFP .

2013年12月5日星期四

SFP 1.25Gb/s transceiver module provides

Ingellen SFP 1.25Gb/s transceiver module provides a low cost high-performance connection, which is also known as OC-48 or STM-16. The Ingellen Multi-rate Series 2.67Gb/s transceiver module integrates optics and electronics in a Small Form Factor Pluggable (SFP) package. The 2.5G SFP transceiver provides a complete 2.5G SONETinterfaces compatible with SONET/SDH optical layer and layer. Its microprocessor – based on a modular design to achieve all of the functions specified in the SFP MSA compatible 2-wire serial digital diagnostic monitoring interface optical transceiver.The SFP 1.25Gb/s transceiver is a network line with transmission speeds of up to 2488.32 Mbit/s (payload: 2405.376 Mbit/s (2.405376 Gbit/s); overhead: 82.944 Mbit/s). With relatively inexpensive interface prices, and being faster than OC-3, OC-12 SFP connections, and even surpassing gigabit Ethernet, OC-48 connections are used as the backbones of many regional ISPs. The 2.5G SFP capabilities on the Cisco ONS 15600 Series consist of two optical line cards, providing interface specifications that meet the varied application needs of the service provider. Interconnections between large ISPs for purposes of peering or transit are quite common.The SFP 1.25Gb/s module are compatible with the Small Form Factor Pluggable Multi-Sourcing Agreement (MSA). The standard serial ID information compatible with SFP MSA describes the transceiver’s capabilities, standard interfaces, manufacturer and other information. The host equipment can access this information via the 2-wire serial bus.

2013年12月4日星期三

common type 50/125 MMF as OM2 Duplex

50/125 is one of the most commonly used multimode optical fiber; the other commonly used is 62.5/125 types. The 50 and 125 is measurement by the unit micron. One meter is equal to one million micron. There is a special kind 50/125 multimode fibers, which is called OM3 50/125. People usually refer 62.5/125 as the OM1 MMF, common type 50/125 MMF as OM2, OM3 is also 50/125, but it is different from OM2 Duplex because it support 10Gig data transmission. The OM3 50/125 fiber optic cable is also called laser optimized fiber cable. Both OM1 and OM2 Duplex multimode cables use the orange color jacket (standard practice for commonly used indoor multimode), OM3 use a special color, which is called Aqua.50/125 is one of the most commonly used multimode optical fiber; the other commonly used is 62.5/125 types. The 50 and 125 is measurement by the unit micron. One meter is equal to one million micron. There is a special kind 50/125 multimode fibers, which is called OM3 50/125. People usually refer 62.5/125 as the OM1 MMF, common type SC to ST, Multimode OM2 Duplex, OM3 is also 50/125, but it is different from OM2 because it support 10Gig data transmission.The OM3 50/125 fiber optic cable is also called laser optimized fiber cable. Both OM1 and OM2 multimode cables use the orange color jacket (standard practice for commonly used indoor multimode), OM3 use a special color, which is called Aqua.