DDM is a technology used in SFP transceivers which allows operators to monitor TX (transmit) and RX (receive) parameters of the transceivers in real-time.
The monitored parameters include transceiver supply voltage, temperature, transmitter bias current, transmitter output power and received optical power. According to these parameters, the operators are able to diagnose why transceiver optics is not working properly.
ORing develops additional warning temperature threshold setting. When the working temperature exceeds the set value, the event alarm will be triggered and then recorded in the Syslog.
ORing offer a full range of optical fiber transceivers with DDM function:
| SFP Optical Transceiver | Speed | Mode | Distance | Wavelength | Operating Temperature |
| SFP100-MM-DDM | 100Mbps | Multi-mode | 2km | 1310 nm | 0~70˚C |
| SFP100-MM-I-DDM | 100Mbps | Multi-mode | 2km | 1310 nm | -40~85˚C |
| SFP100-SS30-DDM | 100Mbps | Single-mode | 30km | 1310 nm | 0~70˚C |
| SFP100-SS30-I-DDM | 100Mbps | Single-mode | 30km | 1310 nm | -40~85˚C |
| SFP100-SS60-DDM | 100Mbps | Single-mode | 60km | 1310 nm | 0~70˚C |
| SFP100-SS60-I-DDM | 100Mbps | Single-mode | 60km | 1310 nm | -40~85˚C |
| SFP100-SS100-DDM | 100Mbps | Single-mode | 100km | 1550 nm | 0~70˚C |
| SFP100-SS100-I-DDM | 100Mbps | Single-mode | 100km | 1550 nm | -40~85˚C |
| SFP100-SS120-DDM | 100Mbps | Single-mode | 120km | 1550 nm | 0~70˚C |
| SFP100-SS120-I-DDM | 100Mbps | Single-mode | 120km | 1550 nm | -40~85˚C |
| SFP1G-SX-DDM | 1Gbps | Multi-mode | 500m | 850 nm | 0~70˚C |
| SFP1G-SX-I-DDM | 1Gbps | Multi-mode | 500m | 850 nm | -40~85˚C |
| SFP1G-MLX-DDM | 1Gbps | Multi-mode | 2km | 1310 nm | 0~70˚C |
| SFP1G-MLX-I-DDM | 1Gbps | Multi-mode | 2km | 1310 nm | -40~85˚C |
| SFP1GB3-LX10-DDM | 1Gbps | Single-mode | 10km | 1310_1550 | 0~70℃ |
| SFP1GB5-LX10-DDM | 1Gbps | Single-mode | 10km | 1550_1310 | 0~70℃ |
| SFP1GB3-LX10-I-DDM | 1Gbps | Single-mode | 10km | 1310_1550 | -40~90℃ |
| SFP1GB5-LX10-I-DDM | 1Gbps | Single-mode | 10km | 1550_1310 | -40~90℃ |