Comprehensive Product Summary: SFP1G-SX-I-DDM

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### 1. Product Overview

Product Name: SFP1G-SX-I-DDM
Model Number: SFP1G-SX-I-DDM
Series: Gigabit Ethernet SFP Optical Transceiver Series
Article Number: SFP1G-SX-I-DDM
Manufacturer: ORing Industrial Networking Corp.
Product Category: Industrial-grade Gigabit Ethernet SFP (Small Form-factor Pluggable) optical transceiver module with DDM (Digital Diagnostic Monitoring)
Website: [www.oring-networking.com](http://www.oring-networking.com)

The SFP1G-SX-I-DDM is a high-performance, industrial-grade optical transceiver designed for Gigabit Ethernet applications over multi-mode fiber (MMF). It supports data rates up to 1 Gbps and provides a transmission distance of up to 550 meters at 850 nm wavelength. The module features an LC duplex connector and includes DDM functionality for real-time monitoring of optical parameters. It is engineered for extended temperature operation, making it suitable for harsh industrial environments.

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### 2. Key Features

- Gigabit Ethernet Performance: Supports 1 Gbps data transmission rate compliant with IEEE 802.3z Gigabit Ethernet standard.
- Multi-Mode Fiber (MMF) Support: Optimized for 50/125 µm and 62.5/125 µm multimode optical fibers.
- Transmission Distance: Up to 550 meters over 50/125 µm MMF at 850 nm wavelength.
- 850 nm VCSEL Laser Source: Utilizes a vertical-cavity surface-emitting laser for efficient short-range optical communication.
- LC Duplex Connector: Compact, industry-standard LC interface for easy integration with fiber patch cords and network equipment.
- Digital Diagnostic Monitoring (DDM): Provides real-time monitoring of critical parameters such as optical output power, input power, temperature, voltage, and laser bias current.
- Industrial Temperature Range: Operates reliably from -20°C to +85°C, ensuring performance stability in extreme conditions.
- Hot-Pluggable SFP Form Factor: Enables easy installation and replacement without system downtime.
- Low Power Consumption: Energy-efficient design suitable for high-density networking environments.
- Compatibility: Fully compatible with standard SFP slots in Ethernet switches, routers, and media converters.
- Rugged Design: Built for industrial-grade reliability with enhanced mechanical and thermal endurance.

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### 3. Technical Specifications

| Parameter | Specification |
|----------------|-------------------|
| Data Rate | 1 Gbps (Gigabit Ethernet) |
| Fiber Type | Multi-mode fiber (MMF) |
| Wavelength | 850 nm |
| Transmission Distance | Up to 550 m (50/125 µm MMF) |
| Connector Type | LC Duplex |
| Transmitter Type | VCSEL (Vertical-Cavity Surface-Emitting Laser) |
| Receiver Type | PIN photodiode |
| Optical Output Power (Max TX) | -1 dBm (62.5/125 µm fiber) |
| Optical Output Power (Min TX) | -9 dBm (62.5/125 µm fiber) |
| Optical Input Power (Sensitivity) | -18 dBm |
| Optical Input Power (Saturation) | 0 dBm |
| Link Budget | 8.5 dB |
| Operating Temperature | -20°C to +85°C (Industrial grade) |
| Storage Temperature | -40°C to +85°C |
| Power Supply Voltage | 3.3 V DC nominal |
| Power Consumption | <1 W typical |
| Form Factor | SFP (Small Form-factor Pluggable) |
| Hot-Pluggable | Yes |
| DDM Support | Yes (Digital Diagnostic Monitoring) |
| Compliance | IEEE 802.3z 1000BASE-SX standard |
| Dimensions | Approx. 56.5 mm (L) × 13.7 mm (W) × 8.5 mm (H) |
| Weight | Approx. 20 g |
| Material | Metal housing with EMI shielding |
| Cooling | Passive, convection-cooled |

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### 4. Functionality

The SFP1G-SX-I-DDM operates as a bidirectional optical transceiver module that converts electrical Gigabit Ethernet signals into optical signals for transmission over multi-mode fiber. It is designed for short-range data communication and networking applications such as LAN, industrial Ethernet, and data center interconnects.

Working Principle:
- The module’s VCSEL laser transmitter converts electrical input signals into optical signals at 850 nm wavelength.
- The PIN photodiode receiver converts incoming optical signals back into electrical signals.
- The DDM interface continuously monitors and reports module parameters (temperature, voltage, TX/RX power, bias current) to the host device via the I²C interface.

Typical Use Cases:
- Industrial Ethernet switches and routers
- Media converters and fiber extenders
- Data center and enterprise LAN backbones
- Factory automation and process control networks
- Intelligent transportation systems (ITS)
- Surveillance and security network backbones

Compatibility:
- Compatible with standard SFP slots in ORing and third-party networking devices.
- Interoperable with other 1000BASE-SX compliant transceivers.
- Works with standard LC duplex multimode fiber patch cords.

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### 5. Components & Accessories

Included Components:
- 1 × SFP1G-SX-I-DDM transceiver module
- Protective dust caps for LC connectors
- Product documentation and compliance label

Optional Accessories:
- Fiber Patch Cords:
- *FPC-LCLC-MM3M:* LC/LC multimode fiber patch cord, 62.5/125 µm, 3 m length
- *FPC-SCLC-MM3M:* SC/LC multimode fiber patch cord, 62.5/125 µm, 3 m length
- *FPC-SCST-MM3M:* SC/ST multimode fiber patch cord, 62.5/125 µm, 3 m length
- Fiber Patch Adapters:
- *FCA-SC-MM:* SC/SC multimode adapter, 62.5/125 µm
- DIN-Rail Power Supplies: For powering associated network devices (e.g., DR-4512, DR-4524, DR-75-24).
- Power Adapters: Universal 12VDC or 48VDC adapters (e.g., PAA-121000, PAX-482500).
- RF Accessories: Optional for integrated wireless networking systems (antennas, cables, surge protectors).

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### 6. Installation & Setup

Installation Requirements:
- Compatible SFP slot in a Gigabit Ethernet switch, router, or media converter.
- LC duplex multimode fiber cable (50/125 µm or 62.5/125 µm).
- Clean optical connectors to ensure signal integrity.

Installation Steps:
1. Power off the host device or ensure hot-plug capability.
2. Remove the protective dust cap from the SFP port and the module.
3. Insert the SFP1G-SX-I-DDM module into the SFP slot until it clicks into place.
4. Connect the LC duplex fiber cable to the transceiver’s optical interface.
5. Power on the device and verify link status via LED indicators.
6. Use the host device’s management interface to monitor DDM parameters if supported.

Configuration:
- No manual configuration required for basic operation.
- DDM data can be accessed via SNMP or CLI on compatible managed switches.
- Ensure correct fiber polarity (TX to RX, RX to TX) between connected devices.

Mounting Options:
- Direct insertion into SFP cages on network hardware.
- Compatible with rack-mounted or DIN-rail-mounted industrial switches.

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### 7. Performance & Capabilities

Speed and Throughput:
- Supports full-duplex Gigabit Ethernet (1.25 Gbps line rate).
- Low latency and high reliability for real-time industrial communication.

Optical Performance:
- Stable optical output power between -9 dBm and -1 dBm.
- Receiver sensitivity down to -18 dBm ensures robust link performance.
- Link budget of 8.5 dB suitable for up to 550 m MMF links.

Efficiency:
- Low power consumption (<1 W typical) reduces heat generation.
- Passive cooling design eliminates the need for active fans.

Environmental Performance:
- Industrial-grade temperature tolerance (-20°C to +85°C).
- Resistant to vibration, shock, and electromagnetic interference (EMI).

Limitations:
- Designed for short-range (≤550 m) multimode fiber applications only.
- Not suitable for single-mode fiber or long-haul transmission.
- Requires clean optical connectors to maintain optimal performance.

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### 8. Standards & Compliance

Industry Standards:
- IEEE 802.3z 1000BASE-SX Gigabit Ethernet
- SFP MSA (Multi-Source Agreement) compliant
- RoHS (Restriction of Hazardous Substances) compliant
- CE and FCC Class A certified for electromagnetic compatibility
- IEC 60825-1 and 60825-2 compliant (Laser Safety)

Regulatory Compliance:
- Meets industrial EMC and safety standards for deployment in harsh environments.
- Conforms to ORing’s “Designed for Rugged Excellence” quality assurance program.

Environmental Compliance:
- Lead-free and halogen-free construction.
- Designed for extended lifecycle and recyclability.

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### 9. Additional Information

Warranty:
- Standard 3-year limited warranty from ORing Industrial Networking Corp.
- Covers manufacturing defects and performance failures under normal use.

Technical Support:
- Comprehensive technical documentation and datasheets available online.
- Global support network with regional service centers.
- Firmware and diagnostic updates available for compatible host devices.

Maintenance:
- Periodic inspection and cleaning of LC connectors recommended.
- Monitor DDM parameters to detect early signs of degradation.
- Replace module if optical power levels fall outside specified range.

Firmware & Updates:
- DDM firmware integrated; no user updates required.
- Host device firmware may provide enhanced DDM interpretation features.

Service Life:
- Typical MTBF (Mean Time Between Failures): >500,000 hours.
- Designed for continuous 24/7 operation in industrial environments.

Packaging:
- Anti-static protective packaging with labeling for model and serial number.
- Includes quick installation guide and safety instructions.

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### Summary

The ORing SFP1G-SX-I-DDM is a robust, industrial-grade Gigabit Ethernet SFP optical transceiver optimized for short-range multimode fiber communication. Operating at 850 nm with a maximum reach of 550 meters, it delivers reliable, high-speed connectivity in demanding environments. Its integrated DDM functionality provides real-time diagnostics, enhancing network management and predictive maintenance capabilities. With compliance to IEEE 802.3z and SFP MSA standards, the module ensures interoperability across a wide range of networking equipment. The extended temperature range (-20°C to +85°C) and ruggedized design make it ideal for industrial automation, transportation, and mission-critical networking applications.

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