What’s the Difference: Transceiver vs Transmitter

Today, let’s learn and compare two terms in optic communication: transceiver vs transmitter(originated in the early 1920s. Looking up in the dictionary, we can distinguish that transmitter is a device that transmits something(in all senses), and transceiver is a combined transmitter and receiver.

Transmitter

A transmitter can either be a separate piece of electronic equipment or an integrated circuit (IC) within another electronic device. A transmitter generates a radio frequency current applied to the antenna, which in turn radiates radio waves for communication, radar and navigational purposes. The information that is provided to the transmitter is in the form of an electronic signal. This includes audio from a microphone, video from a TV camera, or a digital signal for wireless networking devices. The electronics for a transmitter are simple. They convert an incoming pulse (voltage) into a precise current pulse to drive the source. Different transmitter has different functions. Take the optical transmitter as an example, it consists of the following components: optical source, electrical pulse generator and optical modulator. And the role of it is to convert the electrical signal into optical form, and launch the resulting optical signal into the optical fiber.

Transceiver

A transceiver is a device made up of both a receiver and transmitter (the name “transceiver” is actually short for transmitter-receiver) and these two gadgets are in a single module. When no circuitry is common between transmit and receive functions, the device is a transmitter-receiver.

Transceivers can be found in radio technology, telephony as well as Ethernet in which transceivers are called Medium Attachment Units (MAUs) in IEEE 802.3 documents and were widely used in 10BASE2 and 10BASE5 Ethernet networks. Fiber-optic gigabit, 10 Gigabit Ethernet, 40 Gigabit Ethernet, and 100 Gigabit Ethernet utilize transceivers known as GBIC, SFP, SFP+, QSFP, XFP, XAUI, CXP, and CFP, among which Cisco SFP is the most popular one. In addition, 1000BASE-T SFP, 10GBASE-T SFP+ and 1000BASE-T copper SFP we mentioned before are all transceivers.

third-party-transceiver

Transceiver vs Transmitter

From the above information, we can know that the transmitter can only be used to transmit signals, while the transceiver can both transmit and receive signals. However, many view transceivers as a compromise in terms of performance, functionality, portability and flexibility and if they had any practical value it would be in mobile and portable applications. Transceivers sacrificed some features and performance to gain the smaller size/weight and cost.

As for the portability, a transceiver just needs the space of one module, but functions as two different modules. It is easy to be taken on the go. Separate transmitter is not as convenient in some circumstances as it is probably heavier, and takes up more room. But they are advantageous because each could benefit from its own design, without compromising in areas such as I-F frequency choice, conversion frequencies, and audio stages and they are easier to build and work on.

As far as the price is concerned, in most cases, a separate transmitter consumes more power. And the price of a single transceiver is much lower than that of a transmitter plus a receiver.Using a common frequency generation/tuning scheme, power supply and other components, it costs less to manufacture a transceiver than a separate transmitter and receiver.As to how to choose from them, the answer depends on your application.

Conclusion

You may find many transmitters in you life, like the TV remote control. Although transceiver is not commonly noticed around you, it is actually commonly applied to many places. We can say that it is invisible but versatile. I sincerely hope that this article will help you understand the difference: transceiver vs transmitter, only then, can you use them in the right way.

MGBSX1 vs MGBLH1: What’s the Difference?

Cisco SFP is fiber optic transceiver modules that provide fast and reliable connectivity between switches that are located in separate buildings, or on a large campus network. Its long-standing charm and good reputation have intrigued many people for a long time, inducing us to lift the veil on it. Today’s article will generally introduce the Cisco 1000BASE SFP transceivers: MGBSX1 vs MGBLH1.

MGBSX1 :1000BASE-SX SFP transceiver

MGBSX1 is a hot pluggable 1000BASE transceiver invented by Cisco. The 1000BASE-SX standard optics are developed to support lower cost multi-mode fiber runs in horizontal and shorter-length backbone applications. The MGBSX1 transceiver offers the ability to tap into faster networking speeds using fiber optic cabling. It supports dual data-rate of around 1 Gbps, with its operating temperature ranging from 32º to 158ºF (namely, 0º to 70ºC). The industry-standard Cisco Small Form-factor Pluggable Gigabit Interface Converter is a hot-swappable input/output device that plugs into a Gigabit Ethernet port or slot, linking the port with the network. The NGBSX1 SFP is compatible with the IEEE 802.3z 1000BASE-SX standard and operates on 50 micrometer multimode fiber links up to 550m and on 62.5 micrometer FDDI-grade multimode fibers up to 220m. More importantly, installing this module is as easy as sliding it into an accompanying port on a compatible Cisco switch.

MGBSX1

MGBLH1 :1000BASE-LH SFP transceiver

MGBLH1 is also a 1000BASE SFP transceiver. However, it differs from MGBSX1 in that LH stands for long haul. Many vendors use LH for certain SFP modules, this SFP type is similar with the other SFPs in basic working principle and size. However, LH isn’t a Gigabit Ethernet standard, yet is compatible with 1000BASE-LX standard. The MGBLH1 transceiver module provides a low cost high-performance connection. Compliant with specifications of SFP transceiver MSA specification, 1000BASE-LH SFP operates a distance up to 70km over single-mode fiber. Cisco MGBLH1 1000BASE-LH SFP covers a link length of 40km that make itself perfect for long-reach application. Morever, The MGBLH1 transceiver provided by FS.COM is individually tested on a full range of Cisco Linksys equipment and passes the monitoring of FS.COM intelligent quality control system.

MGBLH1

MGBSX1 vs MGBLH1

Model MGBSX1 MGBLH1
Media Type Multimode Fiber Single Mode Fiber
Max Range 500 m 40 km
Wavelength 850 nm 1310 nm
Connector LC LC

The large diameter core of multimode fiber increases the light reflection created as light travelling. Because of the high dispersion and attenuation rate with the multimode fiber, the quality of the signal is reduced over long distances. Therefore, the MGBSX1 is typically used for short distance, data and audio/video applications in LANs. Oppositely, MGBLH1 can be applied to long distance transmission. However, the actual distance will vary based on fiber plant and operating environment.

Conclusion

MGBSX1 vs MGBLH1: have you known the differences? Although they share something in common, they are totally different 1000BASE SFP transceivers. If the working distance is clear, you can choose from the two SFP transceivers according to my advice. When considering other elements, you can turn to the experts on FS.COM. There is a team of experienced networking specialists that is ready to assist you. Choose FS and save money!

Related Articles:
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Are You Ready For 400G Ethernet?

The rapid development in telecom industry is driving massive demand for higher bandwidth and faster data rate, from 10G to 40G and 100G, will this keep going on? The answer is definitely “Yes”. Some time ago, migration from 10G to 40G or 25G to 100G has been a hot spot among data center managers. While recently, 400G solutions and 400G components are coming. Are you ready for 400G? This article will share some information about 400G Ethernet.

Overview of 400G

In the past couple of years, modules with four 25/28G lanes or wavelengths are the solutions for 100G Ethernet. However, they were expensive at the beginning. Until 2016, the optical components industry has responded to the demands with 100G solutions that already cost less per gigabit than equivalent 10G and 40G solutions, and new developments to further drive down cost and increase bandwidths. The next generation is 400G Ethernet. The IEEE has agreed on PSM4 with four parallel fibers for the 500 meters 400GBASE-DR4 specification that is part of the IEEE802.3bs standard being developed for approval by the end of 2017. The industry is already developing optical components for 400G Ethernet solutions. The following figure shows telecom and datacom adoption timelines.

Telecom and datacom adoption timelines

We can visually see that telecom/enterprise applications first adopted 100G technology in the form of CFP modules. Data centers generally did not adopt 100G interfaces until the technology matured and evolved towards denser, lower power interfaces, particularly in the form of QSFP28 modules. However, as the hyperscale data center market scales to keep pace with machine-to-machine communications needs, data center operators have become the first to demand transmission modules for data rates of 400G and beyond. Therefore, the 400G era is now upon us.

Modules for 400G

We know that the QSFP28 modules for 100G Ethernet and SFP28 modules for 25G Ethernet are now the dominant form factors. Though CFP, CFP2 and CFP4 modules remain important for some applications, they have been eclipsed by QSFP28 modules. To support higher bandwidth, what is the right module for 400G? The first CFP8 modules are already available. QSFP-DD is backward compatible with QSFP, and OSFP may deliver better performance, especially as networks move to 800G interfaces.

CFP8 module: CFP8 module is the newest form factor under development by members of the CFP multisource agreement (MSA). It is approximately the size of CFP2 module. As for bandwidth density, it respectively supports eight times and four times the bandwidth density of CFP and CFP2 module. The interface of CFP8 module has been generally specified to allow for 16 x 25 Gb/s and 8 x 50 Gb/s mode.

100G CFP to 400G CFP8

QSFP-DD module: QSFP-DD refers to Quad Small Form Factor Pluggable Double Density. It uses eight 25G lanes via NRZ modulation or eight 50G lanes via PAM4 modulation, which can support optical link of 200 Gbps or 400 Gbps aggregate. In addition, QSFP-DD module can enable up to 14.4 Tbps aggregate bandwidth in a single switch slot. As it is backwards compatible with QSFP modules, QSFP-DD provides flexibility for end users and system designers.

QSFP-DD vs QSFP

OSFP module: OSFP (Octal Small Form Factor Pluggable) with eight high speed electrical lanes is able to support 400G (8x50G). It is slightly wider and deeper than the QSFP but it still supports 36 OSFP ports per 1U front panel, enabling 14.4 Tbps per 1U. The OSFP is able to meet the projected thermal requirements for 800 Gbps optics when those systems and optics become available in the future.

OSFP module

Conclusion

Judging from the current trends, 400G will become the mainstream in the near future. But there are still some challenges for it to overcome, such as high capacity density, low power consumption, ever lower cost per bit, and reliable large-scale manufacturing capabilities. You never know what surprise the network will bring to you, let’s wait and see the 400G’s time.

TP-Link T1700G-28TQ—An Economic Choice for SMBs

As new emerging networking standards, 40G and 100G network have been achieved initial success. But they are based on the 10G network. With the growing numbers of small business enterprises, 10G SMB switches are also in a large demand. TP-Link has introduced the T1700 Series 10G Smart Switches: the T1700X-16TS Full 10 Gigabit Smart Switch and the T1700G-28TQ Gigabit Stackable Smart Switch with 10G Uplink. They provide high levels of performance and the increased scalability that meet the requirements of SMBs. This article would introduce the T1700G-28TQ and its compatible optics.

TP-Link T1700G-28TQ Switch

As one of the TP-LINK’s Gigabit stackable smart switches, the T1700G-28TQ is able to provide reliable, cost-effective and resilient networking solutions for SMBs. The switch is equipped with 24 10/100/1000Mbps RJ-45 ports and 4 dedicated 10G SFP+ slots which can be used for uplinks and/or stacking, providing a strong interconnection between access and aggregation.

TP-Link T1700G-28TQ Switch

Figure1:TP-Link T1700G-28TQ Switch(Resource: www.TP-Link.com)

Features & Benefits of T1700G-28TQ
—Physical Stacking

The T1700G-28TQ supports rich L2 features, including 802.1Q tag VLAN, Port Isolation, Port Mirroring, STP/RSTP/MSTP, Link Aggregation Groups, and 802.3x Flow Control function. Besides, T1700G-28TQ supports L2+ feature static routing, which provides simple network segmentation by routing internal transmissions to make the ow of network traffic more efficient.

—Abundant L2 and L2+ Features

The stack system of T1700G-28TQs supports up to 40Gbps bi-directional stacking bandwidth with built-in redundancy and auto-failover. The switch supports up to 6 units in a stack, which allows it to provide up to 144 GE ports, 12 available 10G SFP+ uplinks and 768Gbps switching capacity, offering high-density developments as well as flexibility for future network expansion need.

—Secure Networking

The T1700G-28TQ supports IP-MAC-Port Binding, Port Security, Storm control, and DHCP Snooping, which help to protect the network from broadcast storms, ARP attacks, and more. And the switch supports 802.1X, which allows network clients to be authenticated through external Radius servers and the guest VLAN function allows non-802.1X clients to access specific network resources.

—Enterprise Level Management

The T1700G-28TQ is easy to use and manage. It supports various user-friendly standard management features, such as intuitive web-based Graphical User Interface (GUI), industry-standard Command Line Interface (CLI), SNMP (v1/2/3), and RMON. This allows the switch to provide valuable status information and send reports on abnormal events. Comprehensive IPv6 support management ensures a smooth migration to an IPv6-based network. It also supports Dual Image to provide improved reliability and network uptime.

Compatible Optics for TP-Link T1700G-28TQ

As being mentioned, the TP-Link T1700G-28TQ has 24 10/100/1000Mbps RJ-45 ports and 4 dedicated 10G SFP+ slots to achieve network connectivity. And it is a switch supports different optical modules and network cables. For the 10/100/1000Mbps RJ-45 ports, you can use 100BASE-TX or 1000Base-T optical transceiver with UTP category 5, 5e or above cable (maximum 100m) to achieve the link. Besides, you can also use 1000BASE-X with singlemode or multimode fiber cable to connect.

10G optics

Figure2: Optional choices for 10G network

As for the 10G SFP+ ports, there are two approaches to achieve transfer the data. You can choose 10G optical transceivers or 10G DAC cables to transfer data. The TP-Link T1700G-28TQ support 10BASE-T with UTP category 3, 4, 5 cable (maximum 100m), 10GBASE-LR and 10GBASE-SR to connect. In addition, you can use TP-LINK TXC432-CU1M or TP-LINK TXC432-CU3M to achieve the link.

The main compatible optical modules and cables are listed in the below:

  • 10BASE-T: UTP category 3, 4, 5 cable (maximum 100m)
  • 100BASE-TX/1000Base-T: UTP category 5, 5e or above cable (maximum 100m)
  • 1000BASE-X: MMF, SMF
  • 10GBASE-LR
  • 10GBASE-SR
  • TP-LINK TXC432-CU1M
  • TP-LINK TXC432-CU3M
Conclusion

TP-Link T1700G-28TQ provides cost-effective solution for 10G SMB networking. This article mainly discussed about its definition, features and benefits as well as compatible optical modules and cables. If you are looking for its compatible optical modules and cables, FS.COM is a nice choice.

Compatible Optical Modules For FS S5850-48S2Q4C 100G Switch

With the development of advanced technology, 100G products is fast growing in 100G market to cater to the demand of a higher bandwidth. How about 100G switches? Recently, FS launches S5850/S8050 series 100G switches including two configurations: S5850-48S2Q4C and S8050-20Q4C, to meet the market demands. The FS S5850-48S2Q4C switch is high performance and cost-effective Ethernet access and aggregation platform to enterprise, data center and metro application. This article aims at providing a detailed information about FS S5850-48S2Q4C 100G switch and its compatible optical modules.

Features of FS S5850-48S2Q4C Switch

The FS 100G switch S5850-48S2Q4C is designed based on the fourth generation high-end scalable chipset, which supports L2/L3/Data Center/Metro features. In a compact 1 RU form factor, the 100G switches can provide line-rate L2 and L3 switching across up to 48 SFP+ ports or 20 QSFP+ ports, and offer 2× 40GbE QSFP+ or 4×100GbE QSFP28 uplink connections. Compared to other 100G switch products on the market, this 100G switch have the following characteristics:

  • Data center lever hardware design.
  • Design for traffic visual and trouble-shooting.
  • Design for data center applications.
  • Focusing on supporting 40G/100G ports with large capacity and high density port.
  • Complete system software with comprehensive protocols and applications to facilitate rapid service deployment and management for both traditional L2/L3 networks and Data Center networks.

S5850-48S2Q4C-100G-switches

Compatible Optic Modules For S5850-48S2Q4C

The FS 100G switch S5850-48S2Q4C supports a full rang of 10, 40 and 100 Gigabit Ethernet connectivity options. Those 10G/40G/100G ports support installation of SFP+, QSFP+ and QSFP28 transceiver modules. FS provides many high-quality compatible SFP+, QSFP+ and QSFP28 modules for S5850-48S2Q4C 100G switch.

10G SFP+ Modules

10G SFP+ modules for FS S5850-48S2Q4C

Among all the 10GBASE SFP modules on the market, 10GBASE SR SFP and 10GBASE-LR are warmly welcomed by many Ethernet users right now. The maximum transmission distance of Cisco 10GBASE-SR module can be up to 300 m and 400 m respectively on this switch by using multimode fiber OM3 and OM4. The Cisco 10GBASE-LR module can arrive a link length of 10 km on standard single-mode fiber through this switch. The 10G SFP+ modules here totally conform to the specification of this S5850-48S2Q4C 100G switch. You can select a proper one to connect.

40G QSFP+ Modules

40G QSFP+ modules for FS S5850-48S2Q4C

As we can see from the above figure, there are many 40G QSFP+ modules available to this switch. By using Cisco 40GBASE-SR4 QSFP modules, link lengths on this switch can arrive 100 m and 150 m, respectively, on laser-optimized OM3 and OM4 multimode fibers. It primarily enables high-bandwidth 40G optical links over 12-fiber parallel fiber terminated with MPO/MTP multifiber female connector. All of FS.COM’s transceivers are tested for 100% functionality and guaranteed compatible for outstanding network performance. So does the above 40G transceivers, they are completely applicable to this S5850-48S2Q4C 100G switch. Recently, there is a big slump in Cisco 40GBASE-SR4 QSFP at FS.COM. So buying Cisco 40GBASE-SR4 QSFP now is really a good deal, for it only needs $49, which can help you save a lot.

100G QSFP28 Modules

100G QSFP28 modules for FS S5850-48S2Q4C

100G QSFP28 SR4 is highly favored by many Ethernet users to connect switch. The 100G QSFP28 SR4 offers 4 independent transmit and receive channels, each capable of 25Gb/s operation for an aggregate data rate of 100Gb/s, which can be up to 100 m on this S5850-48S2Q4C 100G switch by using OM4 multimode fiber. It provides increased port density and total system cost savings. An optical fiber ribbon cable with an MTP/MPO connector can be plugged into the QSFP28 module receptacle. The compatibility of the above 100G QSFP28 modules are guaranteed, you can rest assured to use them for connecting with this S5850-48S2Q4C 100G switch. Just like 40GBASE-SR4 QSFP, Cisco 100G QSFP28 SR4 is on a big sale recently at FS.COM as well. A Cisco 100G QSFP28 SR4 is yours only by paying $269.

Summary

FS S5850-48S2Q4C switch is high performance 100G switch, offering cost-effective solutions for next generation metro, data center and enterprise Ethernet network applications. It supports 10G, 40G and 100G Ethernet network connectivity.