What is the difference between SFP+ and SFP
The difference between SFP+ and SFP. The pinout of SFP and SFP+ connectors are identical. However, SFP is data rate of 6Gb/s, whereas SFP+ is designed for 10Gb/s.
The SFP receptacles and plugs are not as well impedance matched as SFP+ receptacles and plugs.
Also SFP+ cable is designed for 10Gb/s whereas SFP cable may not be able to satisfactorily transmit that rate.
For other features, the fiber optic transceiver also can be divided into other different class. Some fiber optic transceiver modules are designed with DDM function, but some not. Some is used in CWDM, but some is used in DWDM or bi-direction (WDM). Most fiber optic transceiver modules supplied by SOPTO support DDMAdditionally, there is copper fiber optic transceiver. Most fiber optic transceivers supplied by SOPTO support Fibre Channel, LTE, SDH/SONET, CPRI and OBSAI applications.
Take 1.25G SFP module as an example. 1. Optical power badness: 2. Eye diagram badness; 3. Receiving end badness; 4. Working current badness; 5. Program Programming failed;
1. Visual Method: Check the faulty module appearance. Whether there is obvious damage, component burned black, dehiscence, leakage, even tin or not.2. Comparative Law: Use certain tools and a good module. Test the good module and the target module. Mainly analyze circuit parts or components' resistance, voltage, waveform, etc. Then make a comparison.3. Substitution Method: To replace the components of the module; then to analyze the change of operating parameters. 4. Others