The optical performance of TX and RX is important to ensure normal communication of fiber optic transceivers. But what do you know about the optical performance of TX/RX? And how to measure the optical performance of transcerifs? Find the answers in this article. Multi-source agreements (MSAs) are not official standards bodies. Rather, they are agreements that device manufacturers adopt in the development of form factors for communication interfaces. The transceiver SFP contains a pcb equipped with an edge connection with 20 pads connected to the back with the electric SFP connection in the host system. The QSFP has 38 pads, including 4 pairs of high-speed transmission data and 4 pairs of high-speed reception data.   Some important multi-source agreements for optical receivers are listed in the following table: Here is a guide that allows you to discover the interoperability and compatibility of optical transceivers: identical wavelength, equal speed, correct optical fiber, flawless operation of switches after setting up a complex test system with a trusted third-party provider. MSAs define parameters for system components and their reference values, such as.B. mechanical dimensions, electrical and optical interfaces, and electromagnetic values. Device manufacturers rely on MSAs to develop their systems. This ensures interoperability and interchangeability between interface modules. At the time of introduction, typical speeds were 1 Gbps for Ethernet SFPs and up to 4 Gbps for fibre channel SFP modules.
 In 2006, the SFP+ specification brought speeds of up to 10 Gbps and the SFP28 iteration is designed for speeds of 25 Gbps.  It is true that some system vendors have attempted to undermine the MSA standardization value described in this article. The most common pattern is to write unique code to a part of the indefinite memory in the EEPROM of each SFP/SFP+. When the transceiver is inserted into the host switch, its EEPROM is read and if the code is “fake”, the module is rejected as “incompatible”.