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Basics of Cisco GLC-LH-SM SFP optical module

According to the physical standard, Cisco SFP optical module can be divided into 1000BASE-T, 1000BASE-SX, 1000BASE-LX / LH, 1000BASE-EX, 1000BASE-ZX, 1000BASE-BX10-D / U optical module. The Cisco GLC-LH-SM optical module is a 1000BASE-LX / LH optical module, which will be covered in detail in this article.Cisco GLC-LH-SM SFP optical module overviewThe Cisco GLC-LH-SM SFP optical module is a very popular hot-swappable module that utilizes a duplex LC interface that is the smallest Gigabit Ethernet optical module for high-density fiber optic applications. This optical module conforms to the SFP MSA protocol and can be used in both single-mode fiber applications and multimode fiber applications. The Cisco GLC-LH-SM SFP optical module is composed of 1310nm FP laser emitters, PIN photodetectors, transimpedance amplifiers (TIA), microcontrollers (MCUs) and other components, in line with IEEE 802.3z 1000BASE-LX standard, the farthest supporting distance up to10 km transmission. In order ..

Guide of Installing/Removing the SFP RJ-45 Optical Module

The optical module integrates precise optical elements and circuit elements. In the daily use, operation by specification should be noticed; otherwise, the optical module is easily broken. Do you know that there is SFP electrical port module in SFP optical module? How to install and remove SFP electrical port module? The article will give a detailed introduction to the specification of SFP electrical port module's installation and removal.1. Introduction to SFP Electrical Port ModuleOne terminal of SFP RJ-45 module is SFP gold finger connected with the main engine, and the other terminal is common LC interface connected with the optical patch. But sometimes live environment requires using RJ45 interface to connect with a copper network cable. But Internet interface of the device is not enough. Then SFP interface must be transited toRJ45 interface. The former is such an application that one terminal is SPF gold finger and the other terminal is an RJ45 interface with the general speed ra..

Experience of Maintaining the SFP Optical Module

SFP optical module (Small Form-factor Pluggable) can be easily understood as an upgraded version of the GBIC optical module. SFP optical module is half the size of the GBIC optical module, which is only the thumb-size but can configure on the same panel more than double ports on the same panel. The other functions of the SFP optical module are basically the same as those of the GBIC optical module.1. Components of SFP Optical ModuleSFP optical modules are mainly composed of lasers (including transmitter TOSA and receiver ROSA), circuit board IC and external accessories. The external parts are mainly composed of the shell, the base, the PCBA, the pull ring, the buckle, the unlocking piece and the rubber stopper. In order to recognize conveniently, the parameter type of the optical module is generally distinguished by the color of the pull ring.2. SFP Optical Module MaintenanceSFP optical module covers a lot of sophisticated optical components and circuit components. Therefore, the user ..

Differences between the RJ45 port and the SFP port of the switch

We know that in the present market, Gigabit Ethernet switches generally have two ports: RJ45 port and SFP port, both of which can be transmitted with Gigabit Ethernet. Then what are the differences between the two ports? How should we wire them respectively? This tutorial will answer one by one.Gigabit Ethernet switch’s RJ45 port and SFP portIn order to meet the growing network needs, network upgrade in the machine room of the data center or server is urgent. Therefore, Gigabit Ethernet has become increasingly common. So, what kind of port Gigabit switch should be used to achieve Gigabit Ethernet connection? The following is the introduction to two ports in detail:RJ45 portGigabit Ethernet switch’s RJ45 port is a built-in port. To connect two RJ45 port Gigabit Ethernet switches, we only need to use a super five or six cable. The following table is the specific rate and bandwidth of this connection:    Shielded level Maximum transfer rate(distan..
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