Fiber Optics Solutions

četvrtak, 02.07.2015.

SFP modules: These Informations You Should Know

As the technology and market of optical transceivers continue to mature, SFP transceivers are now widely used in optical transmission solutions. These SFP modules are hot-swappable, which is highly helpful to designers in the Telecommunication industry. SFP transceiver is one of the most dependable device in optical transmission systems because the designs are based on a multi-source agreement (MSA) and are a pluggable form of SFF. Except these helpful information, here are some things you need to know about SFP transceiver modules.

The Applications of SFP Transceivers

SFP transceivers can support fiber networking standards such as Gigabit Ethernet, Fiber Channel and SONET. They also support a variety of other optical transmission systems as well. A compact and hot-swappable SFP transceiver can be used in all kinds of optical transmissions and telecommunications applications. These SFP Optics will connect a switch, router, or other network device. Most SFP transceivers can be found in popular networking systems such as Wide Area Networks (WANs), Metro Access Network, and Metro Core Network.

Types of SFP Transceivers

SFP transceivers are able to provide an excellent amount of variation to consumers. They have a various different transmitters and receivers types, allowing users to decide on the appropriate SFP transceiver for each link to offer the required optical reach over the available multi-mode fiber (MMF) or single-mode fiber (SMF).

The SFP module is usually offered in five different categories, including T, SX, LX, ZX, and DWDM. Take HP SFP module as example:

for Copper Networks

JD089B and J8177C: operate on standard Category 5 unshielded twisted-pair copper cabling of link lengths up to 100 m

for multi-mode fiber

J4858C and JD118B: 850 nm, for a maximum of 550 m at 1.25 Gbit/s (gigabit Ethernet)

for single-mode fiber

J4859C: 1310 nm, for distances up to 10 km

JD061A and JD062A: 1310 nm, for distances up to 40 km

JD091A and J4860C: 1550 nm, for distances up to 80 km

Each one of these different kinds interface with copper cables and this permits the motherboard to communicate with the unshielded twisted pair (UTP). CWDM cables and single-mode bi-directional fiber optic cables will transmit data both upstream and downstream.

The Benefits of an SFP Transceiver

SFP transceivers are hot-swappable devices, that is to say that these SFP optics are compatible with many other devices including discrete components. They are also compatible to multiple setups across both fiber optic and copper channels. Whether you need both long or short distance communication, SFP transceivers can help.

Digital optical monitoring (DOM) is based upon the new and modern optical transceiver design. Consumers have the ability to monitor real-time parameters of the SFP. Optical inputs and output power, laser bias, and supply voltage will allow designers to monitor real-time.

Do not forget that an SFP cage may be needed for proper operation of the device. It’s usually mounted to the PCB board and will accept the transceiver. It eliminates extra manufacturing steps and reduces costs. SFP transceivers also have a higher optical reliability and will permit higher soldering temperatures. SFP transceivers are recommended by fiber optic component providers to ensure proper data transmission.

Related Recommendation

Fiberstore, the leading manufacturer and supplier of compatible fiber optic transceiver modules, has achieved a breakthrough in HP compatible transceiver modules and successfully commercialized. Not only SFP SX, SFP LX but also 10G SR SFP, 10G LR SFP transceiver, CWDM SFP+ transceiver modules are available now.

Oznake: SFP module, J4858C, J4859C, J8177C, JD118B, 10G LR SFP

02.07.2015. u 10:14 • 0 Komentara • Print • #

utorak, 05.05.2015.

FAQs of SFP modules

Can I use SFP+ optics in SFP ports or use SFP optics in SFP+ ports?

Not all, it's depending on whether the SFP ports accept SFP+ optics (SFP+ 10GBASE Twinax cables and SFP+ modules) or not. However, most (not all) SFP+ ports accept SFP optics. Most 1Gb and 10Gb SFP+ optics only support a single speed (e.g. 10Gb optics can't run at 1Gb). As long as you have a 1Gb SFP at both ends you shouldn't have a problem.

The Summarize of SFP Module

The structure of SFP optical module are: laser, including transmitter and receiver, external fittings are: base, shell, PCBA, unlock pieces, TAB, card buckle, rubber plug, the other to help you identify the convenient, general using the color of the TAB to recognize the parameters of the module type.

According to the rate divided 155M/622M/1.25G/2.125G/4.25G/8G/10G, 155M and 1.25G currently available on the market use more, 10G technologies are maturing, demand positive attitude to rise development is the next major optical module products.

According to the wavelength divided 850nm/1310nm/1550nm/1490nm/1530nm/1610nm, as SFP 850nm wavelength multimode transmission distance 2km less frequent like Cisco GLC-SX-MM; 1310/1550nm wavelength for Single-mode, the transmission distance 2KM above, relatively speaking, these 3 wavelengths lower cost compared to the other.

If you can't know the bare module is simple to confuse the normal distinction between manufacturers will pull rings in color, take CWDM SFP module as an example: black pull ring for multimode wavelength is 850nm; blue wavelength 1310nm module; yellow is the wavelength of 1550nm module; purple is the wavelength of 1490nm module.

Why choose compatible SFP Module

The simple answer to this query (as most other suppliers will explain) is cost, but that's just one of the reasons to purchase a compatible SFP, SFP+ or XFP fiber optic transceiver. For example in a scenario where gigabit speed is required to run across a point-to-point link, the distance between the link length is assessed and an appropriate SFP transceiver module native to the host device is chosen. If a Cisco platform was in situ then the selection of module will be limited by among the following: 550meter (GLC-SX-MMD), 10km (GLC-LH-SMD), 40km (GLC-EX-SMD) or the maximum 70km (GLC-ZX-SMD). Using a compatible SFP you can choose from a variety of distance limits from 550meters up to 100km in numerous increments with distances of 160km being achievable on the top product lines.

Another advantage of use compatible SFP transceivers is the freedom to tailor the transceiver to your individual requirement.

Custom serial numbers can be added both to the product label and also hard coded to the device itself.

Customer Logos can be added to the products.

Latches can be color coded for high density link identification Fiberstore also provide a recoding service in China, this specific service means existing SFP's can be adapted if the host device is to be changed. In some instances, even cross-device compatibility is quite possible.

HP J4859C

SFP transceiver is a very popular format that’s recommended by a large number of fiber optic component providers. These businesses carry SFP transceivers for those Cisco and HP devices along with transceiver modules for many other manufacturers. Especially, you can find a full product line of our New HP SFP modules, such as J4858C, J4859C, JD118B, and JD092B, etc. Our HP SFP and SFP+ moduels are 100% compatible with a good price and enjoy same-day shipping.

Oznake: SFP module, SFP Transceiver, HP J4859C, Cisco SFP

05.05.2015. u 09:37 • 0 Komentara • Print • #

petak, 27.03.2015.

SFP Module Removal and Installation Tutorial

Be Aware of Before Installing or Removing A Transceiver module

Before removing or installing a SFP Transceiver Module you must disconnect all cables, because of leaving these attached will damage the cables, connectors, and the optical interfaces. At the same time please be aware that do not often remove and install an SFP transceiver and it can shorten its useful life. For this reason transceivers should not be removed or inserted more often than is required.

Furthermore, transceiver modules are sensitive to static, so always ensure that you use an ESD wrist strap or comparable grounding device during both installation and removal.

Required Tools

You will need these tools to install the SFP transceiver module:

1. Wrist strap or other personal grounding device to prevent ESD occurrences.

2. Antistatic mat or antistatic foam to set the transceiver on.

3. Fiber-optic end-face cleaning tools and inspection equipment.

Complete These Steps in Order to Install A SFP Transceiver

1. Attach an ESD-preventive wrist strap to your wrist and to the ESD ground connector or a bare metal surface on your chassis.

2. Remove the SFP Transceiver Module from its protective packaging.
Note: Do not remove the optical bore dust plugs until directed to do so later in the procedure.

3. Check the label on the SFP transceiver body to verify that you have the correct model for your network.

4. Find the send (TX) and receive (RX) markings that identify the top side of the SFP transceiver.
Note: On some SFP transceivers, the TX and RX marking might be replaced by arrowheads that point from the SFP transceiver connector (transmit direction or TX) and toward the connector (receive direction or RX).

5. Position the SFP transceiver in front of the socket opening.
Note: Different Cisco devices have different SFP module socket configurations. Your Cisco device could have either a latch-up or a latch-down orientation. Ensure that you are installing the SFP transceiver in the correct orientation for your Cisco device. Refer to the hardware installation instructions that came with your Cisco device for more details.

6. Insert the SFP transceiver into the socket until you feel the SFP Transceiver Module connector snap into place in the socket connector.

Note: For optical SFP transceivers, before you remove the dust plugs and make any optical connections, observe these guidelines:

Insert the SFP transceiver Always keep the protective dust plugs on the unplugged fiber-optic cable connectors and the transceiver optical bores until you are ready to make a connection. Always inspect and clean the LC connector end-faces just before you make any connections. See the Required Tools section of this document for more information. Always grasp the LC connector housing to plug or unplug a fiber-optic cable.

7. Remove the dust plugs from the network interface cable LC connectors. Save the dust plugs for future use.

8. Remove the dust plugs from the SFP transceiver optical bores.

9. Immediately attach the network interface cable LC connector to the SFP transceiver.

10. Connect the 1000BASE-T SFP transceivers to a copper network.

Caution: In order to comply with GR-1089 intrabuilding lightning immunity requirements, you must use grounded, shielded, twisted-pair Category 5 cabling.

Complete These Steps in Order to Connect the Transceivers to A Copper Network:

A Copper SFP transceiver (1000BASE-T SFP) is shown in following Figure:

a. Insert the Category 5 network cable RJ-45 connector into the SFP transceiver RJ-45 connector.

Note:When you connect to a 1000BASE-T-compatible server, workstation, or router, use four twisted-pair, straight-through Category 5 cabling for the SFP transceiver port. When you connect to a 1000BASE-T-compatible switch or repeater, use four twisted-pair, crossover Category 5 cabling.

b. Insert the other end of the network cable into an RJ-45 connector on a 1000BASE-T-compatible target device.

11. Observe the port status LED:

The LED turns green when the SFP transceiver and the target device have an established link.

The LED turns amber while STP discovers the network topology and searches for loops. This process takes about 30 seconds, and then the LED turns green.

If the LED is off, the target device might not be turned on, there might be a cable problem, or there might be a problem with the adapter installed in the target device. Refer to the Troubleshooting section of your switch hardware guide for solutions to cabling problems.

Reconfigure and reboot the target device if necessary.

Complete These Steps in Order to Remove SFP Transceiver

1. Attach an ESD-preventive wrist strap to your wrist and to the ESD ground connector or a bare metal surface on your chassis.

2. Disconnect the network fiber-optic cable or network copper cable from the SFP Transceiver Module connector.

3. For optical SFP transceivers, immediately reinstall the dust plugs in the SFP transceiver optical bores and the fiber-optic cable LC connectors.

Tips: For reattachment of fiber-optic cables, note which connector plug is send (TX) and which is receive (RX).

Release and Remove the SFP Transceiver Module from the Cocket Connector.

If the SFP transceiver has a Mylar tab latch, pull the tab gently in a slightly downward direction until the transceiver disengages from the socket connector, and then pull the SFP transceiver straight out. Do not twist or pull the Mylar tab because you could detach it from the SFP transceiver.

SFP

If the SFP transceiver has an Actuator button latch, gently press the actuator button on the front of the SFP transceiver until it clicks and the latch mechanism releases the SFP transceiver from the socket connector. Grasp the actuator button between your thumb and index finger, and carefully pull the SFP transceiver straight from the module slot.

If the SFP transceiver has a Bale-clasp latch, pull the bale out and down to eject the SFP transceiver from the socket connector. If the bale-clasp latch is obstructed and you cannot use your index finger to open it, use a small flat-blade screwdriver or another long narrow instrument to open the bale-clasp latch. Grasp the SFP transceiver between your thumb and index finger, and carefully remove it from the socket.

Fiberstore is a professional OEM manufacturer and supplier of optical networking solutions. Fiberstore provides a full set of comaptible fiber optic transceiver module solution cover all the famous brands, such as Cisco, HP, Finisar and so on. Especially, you can find a full product line of our New Cisco SFP modules, such as GLC-LX-SM-RGD, SFP-GE-T, GLC-SX-MMD, etc. For more Tutorials about Optical Transceivers please visit: Fiberstore Optical Transceiver Tutorials.

Oznake: SFP module, 1000base-t sfp

27.03.2015. u 09:07 • 0 Komentara • Print • #

<< Arhiva >>

Ovaj blog je ustupljen pod Creative Commons licencom Imenovanje-Dijeli pod istim uvjetima.