Fiberall Technology (Shenzhen) Co., Ltd
Fiberall Technology (Shenzhen) Co., Ltd
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1.25G Bi directional SFP Fiber Optic Transceiver LC 40KM DDM SFF8472 Compliant
We know that fiber optic transceiver play an important role in data centers, and many international organizations and industry organizations have developed various standards to regulate the production and manufacture of optical transceiver, such as GBIC, SFF-0053, INF-8074 and SFF-8472. Now, with the increasing demand for bandwidth, optical modules must also increase the speed and performance to meet this demand. SFF-8472 is now a protocol that most optical modules abide by.
The main advantages of the SFF-8472 protocol is the definition of a reference frame for fiber optic transceiver manufacturers and network equipment manufacturers, so products of different optical transceiver manufacturers and network equipment manufacturers can be with seamless interoperability, and the optical communication industry can share OAM parameters. In addition, the SFF-8472 protocol also provides some specifications for the important parameters of fiber optic transceiver and switches.
The main purpose of the SFF-8472 protocol is to define the digital diagnostic monitoring function (DDM) of the optical transceiver, and what is the digital diagnostic monitoring function (DDM)? It is a technique used in the GBIC/SFP/SFP+ fiber optic transceiver to help users monitor the real-time parameters of the optical module. The SFF-8472 protocol provides calibrated results or provides digitized measurement results and calibration parameters, which are stored in standard memory structure. Besides providing parameter monitoring information, the memory structure also defines alarm signs or alarm conditions.
What are the benefits of using the SFF-8472 protocol? The SFF-8472 protocol adds a digital diagnostic monitoring function (DDM) to the optical transceiver, which optimizes the serial ID interface in the GBIC and SFP MSA protocols. This protocol has the following advantages: 1, it can predict the life of fiber optic transceiver; 2, it can find fault spots accurately; 3, it can detect the compatibility of optical transceiver, that is, detect whether optical modules can be used on a network device.
Pin Description Of SFP Fiber Optic Transceiver
| Pins | Name | Discription | NOTE |
| 1 | VeeT | Transmitter Ground | |
| 2 | Tx Fault | Transmitter Fault Indication | 1 |
| 3 | Tx Disable | Transmitter Disable | 2 |
| 4 | MOD DEF2 | Module Definition 2 | 3 |
| 5 | MOD DEF1 | Module Definition 1 | 3 |
| 6 | MOD DEF0 | Module Definition 0 | 3 |
| 7 | Rate Select | Not Connected | |
| 8 | LOS | Loss of Signal | 4 |
| 9 | VeeR | Receiver Ground | |
| 10 | VeeR | Receiver Ground | |
| 11 | VeeR | Receiver Ground | |
| 12 | RD- | Inv. Received Data Output | 5 |
| 13 | RD+ | IReceived Data Output | 5 |
| 14 | VeeR | Receiver Ground | |
| 15 | VccR | Receiver Power | |
| 16 | VccT | Transmitter Power | |
| 17 | VeeT | Transmitter Ground | |
| 18 | TD+ | Transmit Data Input | 6 |
| 19 | TD- | Inv. Transmit Data Input | 6 |
| 20 | VeeT | Transmitter Ground |
Main Characteristics
1, With standard LC simplex connector;
2, 1310nm FP Laser and 1550nm PIN photodetector;
3, 1550nm DFB Laser and 1310nm PIN photodetector;
4, Maximum 40Km transmission distance on SMF;
5, With single +3.3V power supply;
6, LVPECL compatible data input/output interface
7, Low EMI and excellent ESD protection
8, Laser safety is compliant with IEC-60825 standard
9, Compatible with RoHS and SFF8472