Comprehensive Product Summary – ORing RMC-121FB-MM-SC Card Type Media Converter

---

### 1. Product Overview

Product Name: Card Type Media Converter
Model: RMC-121FB-MM-SC
Series: RMC-121FB Series
Article Number: RMC-121FB-MM-SC
Manufacturer: ORing Industrial Networking Corp.
Product Type: Industrial-grade card-type Ethernet-to-fiber media converter
Associated Chassis: RMC-1000 Rack-Mount Chassis (supports RMC-111/121FB series modules)
Version: 1.0

The ORing RMC-121FB-MM-SC is a compact, card-type industrial media converter designed to provide seamless conversion between copper-based Ethernet (10/100Base-TX) and fiber-optic (100Base-FX) networks. It is engineered for integration into the RMC-1000 rack-mount chassis, which accommodates up to 18 converter modules, enabling high-density deployment in industrial and enterprise networking environments. The converter supports dual 10/100TX RJ-45 ports and one 100FX multimode SC fiber port, offering flexible and reliable media conversion for extended network reach and electromagnetic interference immunity.

---

### 2. Key Features

- Dual Copper to Fiber Conversion: Converts two 10/100Base-TX (RJ-45) Ethernet ports to one 100Base-FX multimode SC fiber port.
- Hot-Swappable Card Design: Enables easy insertion and removal from the RMC-1000 chassis without system downtime.
- Industrial Temperature Range: Operates reliably from -10°C to +60°C, suitable for harsh industrial environments.
- Compact Card Form Factor: Dimensions of 21.8 × 73.1 × 126 mm, optimized for high-density rack installations.
- Low Power Consumption: Typical power usage of approximately 2.2 W, ensuring energy-efficient operation.
- Lightweight Construction: Weighs approximately 0.145 kg, facilitating easy handling and installation.
- High Reliability: Designed for continuous operation with redundant power supply support when used in the RMC-1000 chassis.
- Auto-Negotiation and Auto-MDI/MDI-X: Automatically detects link speed and cable type for plug-and-play connectivity.
- Multi-Mode Fiber Support: Compatible with multimode optical fiber for medium-distance transmission (typically up to 2 km).
- SC Fiber Connector Interface: Standard SC connector ensures secure and stable fiber connections.
- Rack-Mount Integration: Fully compatible with the RMC-1000 19-inch rack chassis, supporting up to 18 converter cards.
- Dual Power Supply Redundancy (via chassis): Ensures uninterrupted operation in case of power source failure.
- Compliance with Industrial Standards: Meets FCC, CISPR, and EN61000 series EMC/EMS standards for electromagnetic compatibility.

---

### 3. Technical Specifications

Electrical & Interface Specifications
- Copper Ports: 2 × 10/100Base-TX (RJ-45)
- Fiber Port: 1 × 100Base-FX (SC, multimode)
- Transmission Distance (MM): Up to 2 km (typical for 100Base-FX multimode)
- Auto-Negotiation: Supported for 10/100 Mbps
- Auto MDI/MDI-X: Supported
- Power Consumption: ~2.2 W
- Power Input: Supplied via RMC-1000 chassis backplane

Physical Characteristics
- Dimensions: 21.8 mm (H) × 73.1 mm (W) × 126 mm (D)
- Weight: ~0.145 kg
- Form Factor: Card-type module for RMC-1000 chassis
- Material: Industrial-grade metal enclosure for durability and EMI shielding

Environmental Conditions
- Operating Temperature: -10°C to +60°C (14°F to 140°F)
- Storage Temperature: -40°C to +85°C (-40°F to 185°F)
- Operating Humidity: 5% to 95% RH, non-condensing

Associated Chassis (RMC-1000) Specifications
- Slot Capacity: 18 slots for RMC-111/121FB series converters
- Power Input: Dual 100–240 VAC redundant power supplies
- Protection: Overload current protection
- Dimensions: 430 mm (W) × 243 mm (D) × 132 mm (H)
- Weight: 4955 g
- Mounting: 19-inch rack-mountable
- Environmental: Same as converter module
- Regulatory Compliance: FCC Part 15, CISPR (EN55022) Class A; EN61000-4-2/3/4/5/6/8/11

---

### 4. Functionality

The RMC-121FB-MM-SC functions as a media conversion module that bridges Ethernet copper cabling and fiber-optic networks. It enables network administrators to extend Ethernet connections beyond the 100-meter limitation of copper cables by converting signals to optical fiber, which supports longer distances and immunity to electromagnetic interference.

Operational Principle:
- Incoming Ethernet signals from the two RJ-45 ports are converted into optical signals via the 100FX multimode SC interface.
- The converter automatically negotiates link speed (10/100 Mbps) and duplex mode with connected devices.
- The fiber interface transmits data over multimode fiber, typically up to 2 km, depending on fiber quality and environmental conditions.
- The module is powered through the RMC-1000 chassis backplane, ensuring centralized power management and redundancy.

Use Cases & Applications:
- Industrial automation and control systems requiring reliable long-distance Ethernet connectivity.
- Factory floors, substations, and transportation systems where EMI immunity is critical.
- Enterprise or campus networks extending Ethernet segments between buildings.
- Integration into high-density rack-mounted network systems for centralized management.
- Applications requiring redundant power and hot-swappable maintenance.

Compatibility:
- Fully compatible with RMC-1000 chassis and other RMC-111/121FB series modules.
- Supports standard Ethernet protocols (IEEE 802.3, 802.3u).
- Works with multimode fiber cables terminated with SC connectors.

---

### 5. Components & Accessories

Included Components (per module):
- 1 × RMC-121FB-MM-SC media converter card
- Quick Installation Guide (QIG)
- Mounting and securing hardware (when supplied with chassis)

Optional Accessories (via RMC-1000 chassis):
- Rack-mount kit
- Round screws (M4 × 6)
- Additional power supply modules for redundancy
- Fiber patch cords and copper Ethernet cables

Chassis Accessories (RMC-1000):
- 1 × Rack-mounted kit
- 2 × Quick Installation Guides
- 3 × Round screws (M4 × 6)

---

### 6. Installation & Setup

Installation Requirements:
- RMC-1000 chassis with available slot
- Standard 19-inch rack space for chassis installation
- Power supply connection (100–240 VAC) to chassis
- Appropriate multimode fiber and Ethernet cabling

Installation Procedure:
1. Power off the RMC-1000 chassis or ensure hot-swap capability is active.
2. Insert the RMC-121FB-MM-SC card into an available slot, aligning with the backplane connector.
3. Secure the card using the provided mounting screws.
4. Connect Ethernet cables to the RJ-45 ports and fiber cable to the SC connector.
5. Power on the chassis (if powered off) and verify link/activity LEDs for proper operation.

Configuration:
- The converter operates in plug-and-play mode; no software configuration is required.
- Auto-negotiation and auto-MDI/MDI-X simplify network setup.
- For advanced monitoring, integration with managed switches or network management systems is possible.

---

### 7. Performance & Capabilities

Speed & Throughput:
- Supports 10/100 Mbps Ethernet speeds on copper ports.
- Provides 100 Mbps full-duplex transmission on fiber port.
- Low latency and high data integrity for industrial-grade communication.

Capacity & Scalability:
- Each RMC-121FB-MM-SC module supports two copper and one fiber link.
- Up to 18 modules can be installed in a single RMC-1000 chassis, enabling up to 36 copper-to-fiber conversions per rack unit.

Efficiency:
- Low power consumption (~2.2 W per module) reduces overall rack power requirements.
- Hot-swappable design minimizes downtime during maintenance or upgrades.

Limitations:
- Designed for multimode fiber only (not compatible with single-mode fiber).
- Maximum transmission distance limited to approximately 2 km for multimode fiber.
- Requires RMC-1000 chassis for operation; not a standalone converter.

---

### 8. Standards & Compliance

Regulatory Compliance:
- EMI: FCC Part 15, CISPR (EN55022) Class A
- EMS: EN61000-4-2 (ESD), EN61000-4-3 (RS), EN61000-4-4 (EFT), EN61000-4-5 (Surge), EN61000-4-6 (CS), EN61000-4-8, EN61000-4-11
- Shock: IEC60068-2-27
- Vibration: IEC60068-2-6
- Free Fall: IEC60068-2-32

Industry Standards:
- IEEE 802.3 10Base-T
- IEEE 802.3u 100Base-TX/100Base-FX
- RoHS compliant (based on ORing’s industrial product line standards)

Environmental Compliance:
- Designed for industrial temperature and humidity ranges.
- Meets environmental durability standards for vibration, shock, and free fall.

---

### 9. Additional Information

Warranty:
- Standard 2-year limited warranty from ORing Industrial Networking Corp.

Support & Maintenance:
- Technical support available via email and phone:
- Email: support@oring-networking.com
- Tel: +886-2-2218-1066
- Fax: +886-2-2218-1014
- Firmware and documentation updates available on the official website:
- Website: [www.oring-networking.com](http://www.oring-networking.com)

Maintenance Recommendations:
- Periodically inspect fiber and copper connectors for dust or oxidation.
- Ensure proper ventilation within the rack to maintain optimal operating temperature.
- Replace modules only with power redundancy active to avoid service interruption.

Product Lifecycle & Updates:
- Version 1.0 represents the initial release of the RMC-121FB-MM-SC model.
- Future revisions may include enhanced fiber compatibility or management features.

Packaging & Documentation:
- Each unit is shipped with a Quick Installation Guide (QIG) printed on recycled paper.
- Packaging designed for safe transport and environmental sustainability.

---

### Summary

The ORing RMC-121FB-MM-SC is a robust, industrial-grade card-type media converter engineered for high-density Ethernet-to-fiber conversion within the RMC-1000 rack-mount chassis. With dual 10/100Base-TX RJ-45 ports and a single 100Base-FX multimode SC port, it provides reliable, efficient, and EMI-resistant network extension for industrial and enterprise applications. Its hot-swappable design, low power consumption, and compliance with stringent EMC and environmental standards make it an ideal solution for mission-critical networking environments requiring scalability, redundancy, and long-term reliability.

---

Manufacturer: ORing Industrial Networking Corp.
Model: RMC-121FB-MM-SC
Series: RMC-121FB
Associated Chassis: RMC-1000
Warranty: 2 Years
Contact: support@oring-networking.com | www.oring-networking.com