• August 05. 2021

In this article, ETU-Link will introduce the connection between the server and the switch and the construction scheme of the campus network. Speaking of the server, in fact, it is a little similar to the computer we use in daily life, which is the equipment to provide computing services. The composition of the server includes processor, hard disk, memory, system bus, etc. As the server needs to re...

• August 03. 2021

With the rapid development of the communication industry and data centers at home and abroad, the demand for optical modules has increased sharply. The production capacity of brand original optical modules is limited and the number is small, so the price is relatively expensive and the user's use cost is high. In view of this market phenomenon, many manufacturers of dual capacity optical modules h...

• July 31. 2021

Fiber optic communication has completely replaced cable communication due to its advantages of high transmission quality, small size and weight. As an important part of fiber optic communication, optical module mainly plays the role of optical signal conversion, converting electrical signals of network equipment into optical signals, so that data can be transmitted in fiber. The following ETU-Link...

• July 29. 2021

In this blog, ETU-LINK will introduce the selection and connection scheme of lower access layer switch and aggregation layer switch. In the three-tier architecture, the role of the access layer is mainly to connect end users to the network. The access layer switch is the equipment of the switching layer. Because the access layer switch needs to connect more end users, the price of the access layer...

• July 28. 2021

The requirements of office building network for service quality, function and security are much higher than those of ordinary residential users. In addition to accessing multiple computers, the office network also undertakes the data transmission tasks of various automation systems, such as monitoring, lighting, air conditioning, etc. Therefore, the office building network should have the characte...

• July 21. 2021

As we all know, DAC active cable is mainly used for interconnection between cabinets. Due to the limitation of passive copper cable DAC transmission distance due to material, high frequency loss of connector and other factors, the maximum length of passive copper cable DAC with transmission rate of 10G/25G can only reach 7m, and the maximum length of passive copper cable DAC with transmission rate...

• June 29. 2021

According to the transmission distance, 25G optical modules can be divided into 25G SFP28 SR 100m, 25G SFP28 LR 10km, 25G SFP28 ER 40km, etc. In this article, ETU-LINK will focus on introducing the 25G SFP28 LR 10km optical module.     The 25G SFP28 LR 10km optical module has a working wavelength of 1310nm, dual LC connector, DFB laser and PIN photodetector, built-in CDR circui...

• June 25. 2021

1.25G SFP SX Gigabit multimode optical module is a product of the optical module of the SFP series. It is called SX for short. Its interface type is duplex LC, with a maximum speed of 1.25Gbps. It can be used with om2 multimode fiber patch cord, and the longest transmission distance can reach 550 meters. ETU-LINK’s SX has a central wavelength of 850nm, equipped with imported VCSEL laser and P...