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DGE-891/A
- Description:
- D-Link 1 port 10/100/1000Base-T to 1000Base-LX Gigabit Ethernet photoelectric converter, single-mode single fiber, TX:1310/RX:1550nm, maximum transmission 20km, SC interface, need to be used in pairs, can be used alone Or with DMC-1100
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DGE-891/A Overview
DGE-891/A is a high-performance SFP+ transceiver engineered to deliver 10G data rate connectivity using an LC connector. Designed for long-range applications, this transceiver supports Ethernet protocols and is ideally suited for environments such as data centers, enterprise networks, and telecom infrastructures.
The DGE-891/A transceiver features an SFP+ form factor with compact physical dimensions that facilitate easy integration into networking equipment. Its robust design ensures reliable performance over extended distances while meeting the rigorous demands of modern high-speed communication systems.
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DGE-891/A Specifications
| Product Type | Transceiver |
| Form Factor | SFP+ |
| Data Rate | 10G |
| Connector Type | LC |
| Wavelength | 1310 nm |
| Transmission Distance | Long-Range |
| Fiber Type | Single-mode |
| Max Distance | 80 km |
| Supported Protocols | Ethernet |
| Network Interface | Fiber |
| Power Consumption | 3.5W |
| Operating Temperature | 0 to 70°C |
| Storage Temperature | -40 to 85°C |
| Input Voltage | 3.3V |
| Compatibility | Cisco / Juniper / Huawei / Arista |
| Product Name | DGE-891/A High-Performance Long-Range 10G SFP+ Transceiver |
| Height | 0.7 inches |
| Width | 0.6 inches |
| Depth | 1.2 inches |
| Weight | 0.05 lbs |
DGE-891/A Use Case
Campus Backbone Extension with DGE-891/A for University Network
A large university connects two academic buildings 15 km apart over existing single-mode fiber. Installing a pair of DGE-891/A Gigabit Ethernet photoelectric converters (TX:1310 nm/RX:1550 nm, SC interface) provides seamless 10/100/1000 Mbps copper-to-fiber conversion. Outcome: High-speed, low-latency backbone extension with up to 20 km reach, ensuring reliable campus-wide data, video and VoIP services without costly fiber re-run.
Smart City Surveillance Link Using DGE-891/A and DMC-1100
A municipal authority deploys 4K IP cameras at a remote traffic junction 18 km from the central NVR. Pairing DGE-891/A converters with DMC-1100 media converters delivers a robust 1 Gbps fiber link over single-mode cable. Outcome: Uninterrupted, high-definition video streaming with EMI immunity and secure galvanic isolation, reducing maintenance costs and maximizing public safety.
Industrial Control Network over Single-Mode Fiber with DGE-891/A
An oil refinery links its control room and field sensors across a hazardous zone spanning 12 km. A pair of DGE-891/A converters provides galvanic isolation and fiber-based Gigabit Ethernet over single-mode SC-interface cable. Outcome: Enhanced network resilience and EMI resistance, safeguarding critical process control data and minimizing downtime in corrosive environments.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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|---|---|---|---|---|---|
| Compatibility | Cisco, Juniper, Huawei | Cisco / Juniper / Huawei / Arista | Cisco, Juniper, Huawei, Arista | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista |
| Connector Type | LC | LC | LC | LC | LC |
| Data Rate | 100G | 10G | 10G | 100G | 100G |
| Depth | 1.0 inches | 1.2 inches | 0.34 inches | 1.30 inches | 0.9 inches |
| Fiber Type | Single-mode | Single-mode | Single-mode | Multi-mode | Single-mode |
| Form Factor | QSFP+ | SFP+ | SFP | QSFP | QSFP |
| Height | 0.33 inches | 0.7 inches | 0.13 inches | 0.35 inches | 1.0 inches |
| Input Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Max Distance | 80 km | 80 km | 80 km | 150 meters | 80 km |
| Network Interface | Fiber | Fiber | Fiber | Fiber | Fiber |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Power Consumption | 12.5W | 3.5W | N/A | 4.5W | 8 W |
| Product Name | DEM-432XT High-Speed Optical Transceiver | DGE-891/A High-Performance Long-Range 10G SFP+ Transceiver | DFE-850 Optical Transceiver Module | DGE-894/B QSFP 100G Short Range Transceiver | DGE-894/A High-Performance QSFP Transceiver |
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Supported Protocols | Ethernet, Fibre Channel | Ethernet | Ethernet, Fibre Channel | Ethernet | Ethernet |
| Transmission Distance | Long-Range | Long-Range | Long-Range | Short-Range | Long-Range |
| Wavelength | 1310nm | 1310 nm | 1310 nm | 1310 nm | 1310 nm |
| Weight | 0.25 lbs | 0.05 lbs | 0.04 lbs | 0.15 lbs | 0.15 lbs |
| Width | 0.78 inches | 0.6 inches | 0.59 inches | 0.82 inches | 0.7 inches |
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Questions & Answers
Q
What is the D-Link DGE-891/A Ethernet photoelectric converter?
A
The DGE-891/A is a 1-port Gigabit Ethernet converter that converts 10/100/1000Base-T to 1000Base-LX over single-mode, single-fiber with SC interfaces.
Q
Which fiber type does the DGE-891/A support?
A
It supports single-mode, single-fiber transmission for long-distance Gigabit Ethernet links.
Q
What transmission distance can the DGE-891/A achieve?
A
It delivers reliable data transmission up to 20 kilometers over single-mode fiber.
Q
What wavelengths are used by the DGE-891/A?
A
It transmits at 1310 nm and receives at 1550 nm for optimal single-fiber performance.
Q
What interfaces are available on the DGE-891/A?
A
It features one RJ45 10/100/1000Base-T port and one SC 1000Base-LX fiber interface.
Q
Can the DGE-891/A operate alone or does it require a pair?
A
For a complete fiber link, two units of DGE-891/A are required, though each module can function independently for diagnostics.
Q
Is the DGE-891/A compatible with the DMC-1100 chassis?
A
Yes, the DGE-891/A can be installed in D-Link’s DMC-1100 media converter chassis for centralized power and management.
Q
Does the DGE-891/A support auto-negotiation on the copper port?
A
Yes, the RJ45 port supports full-/half-duplex and 10/100/1000 Mbps auto-negotiation.
Q
What connector type is used for the fiber interface on the DGE-891/A?
A
It uses an SC-style female connector for single-mode fiber connections.
Q
What power options are available for the DGE-891/A?
A
The converter accepts a standard 5 V DC external power adapter or can draw power from the DMC-1100 chassis.
Q
Which LED indicators are provided on the DGE-891/A?
A
LEDs indicate power, copper link/activity, fiber link/activity, and transmission status.
Q
What operating temperature range does the DGE-891/A support?
A
It operates in temperatures from 0 °C to 50 °C (32 °F to 122 °F) for indoor deployments.
Q
What applications are ideal for the DGE-891/A?
A
It is ideal for extending Gigabit Ethernet over long distances in campus, metro, and surveillance networks.
Q
What is the SKU for ordering this media converter?
A
The official SKU is DGE-891/A for the 10/100/1000Base-T to 1000Base-LX converter.
Q
Does the DGE-891/A support link fault pass-through (LFP)?
A
Yes, it supports LFP to detect and propagate link failures between copper and fiber segments.
Q
Is the DGE-891/A justified for high-EMI environments?
A
Yes, optical isolation and fiber connectivity eliminate EMI issues common in industrial settings.
