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The SFP bidirectional fiber optic transceiver

The SFP bidirectional fiber optic transceiver. The Sopto SPT-PB series of Bi-Di fiber optic transceivers is a signal converter to convert the electrical signal into the optical signal in the computer network.

 

The biggest benefit of bidirectional fiber optic transceiver is to use only one (core) fiber to transmit and receive the optical signals simultaneously, which is less than the double fiber optical transceiver with a fiber so that it improves the amount of the existing fiber information transmission.

 

The SPT-PB 155M/1.25G series of adaptive bidirectional fiber optical transceiver is fully compatible with the IEEE802.3 10BaseT, IEEE802.3u 100BaseTX and 100Base-FX standards. And it has passed the test of the Ministry of Information Industry. All the technical indicators meet the network standards.

 

Since the different transmission wavelength and reception wavelength (1310nm/1550nm) of BI-DI fiber optical transceiver, it must be used in pairs. Otherwise, it will not work.

SFP 155M 1310nm 20km DDM

155M 1310nm 20km DDM SFP Transceiver Module. Up to 155Mbps data-rate 1310nm FP laser and PIN photo detector for 20km transmission. Compliant with SFP MSA and SFF-8472 with duplex LC receptacle. Digital Diagnostic Monitoring: Internal Calibration or External Calibration. Compatible with RoHS, +3.3V single power supply. Operating case temperature: Standard: 0 to +70°C, Industrial: -40 to +85°C

SFP 155M 1310nm 2km DDM
155M 1310nm 2km DDM SFP Transceiver Module. Up to 155Mbps data-rate 1310nm FP (LED) laser and PIN photo detector for 2km transmission with MMF. Compliant with SFP MSA and SFF-8472 with duplex LC receptacle, Digital Diagnostic Monitoring: Internal Calibration or External Calibration. Compatible with RoHS, +3.3V single power supply. Operating case temperature: Standard: 0 to +70°C, Industrial: -40 to +85°C
SFP 155M 1310nm 40km DDM
155M 1310nm 40km DDM SFP Transceiver Module. Up to 155Mbps data-rate 1310nm FP laser and PIN photo detector for 40km transmission. Compliant with SFP MSA and SFF-8472 with duplex LC receptacle. Digital Diagnostic Monitoring: Internal Calibration or External Calibration. Compatible with RoHS. +3.3V single power supply. Operating case temperature:. Standard: 0 to +70°C, Industrial: -40 to +85°C

Related Tutorials

Reason and Maintenance methods of common problem of optical module internally

A. Optical power badness performance A1. BIAS optical bias current within the normal range, the optical power exceeds out of the control range. A2. Laser bias current of BIAS in the normal range, the optical power is less than the control range. A3. There is no light. A3.a. BIAS value is displayed as 0. A3.b. BIAS short circuit, value is very great, displayed as 90mA ~ 150mA; and data can be saved. A4. There is light during the debug process, but the optical power don't change A5. Optical power is unstable. A6. Side mode suppression ratio is small. B. Eye diagram badness performance B1. Extinction ratio of non-performing B1.a Small extinction ratio B1.b Large extinction ratio B2. Eye

Reason and Maintenance methods:

A1.1 Emission component TOSA is bad. Maintenance method is to replace the TOSA.A1.2 The TOSA PINs PD+ is welded badly so that the power is so large. But when debug the software, the power won’t be changed. Maintenance method is to weld the pin better.A1.3 Power and resistance don't match with the BIAS optical bias current. Maintenance method is to improve the power and resistance. A2.1 Emission component TOSA is bad. The maintenance method is to replace the TOSA.A2.2 Paste is bad or poor performance of driver chip. The repair method is to re-paste driver chip or to replace the chip.A2.3 Power and resistance don't match with the BIAS optical bias current. Maintenance method is to reduce

Reason and Maintenance methods of common problem of optical module externally

1. Power light does not light.Reason: Power supply fault. Maintenance method: Replace the power supply. 2. Link lights are not lit.Failure may be as follows:(A) Check whether the fiber lines circuit breakers(B) Check whether the fiber line loss is too great, over equipment reception range(C) Check whether the optical interfaces are connected properly, local TX and RX connections from afar, TX and RX connections of the local in the distance.(D) Check whether the optical fiber connector intact, insert a device interface, jumper type matches the device interfaces, device type matches the fiber, equipment transfer length matches the distance. 3. The circuit Link light does not light.Failure
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