Reliable Data Transmission in Tactical, Industrial, and Field Environments
The OPTOKON LMC series consists of rugged optical media converters designed to create high-speed Ethernet connections in the most demanding operating conditions.
Thanks to a robust metal enclosure, vibration-resistant HMA Expanded Beam connectors, and a wide operating temperature range, LMC series media converters ensure reliable data exchange between copper and optical lines in field and industrial systems.
The LMC series is used in:
- military and C4ISR communication systems,
- industrial networks, oil refineries, and mining enterprises,
- transportation, energy, as well as mobile command posts and surveillance systems.
Main advantages of the series
- Rugged Design: Aluminum alloy enclosure, compliant with MIL-STD-810G, IP65.
- High Compatibility: Supports Fast Ethernet and Gigabit Ethernet.
- HMA Expanded Beam optical connectors – reliable transmission even in dusty or humid environments.
- Operation in Extreme Temperatures: from -40°C to +75°C.
- PoE/PoE+ support and 10–36 V DC power supply.
- LFP (Link Fault Pass-Through) support – instant link failure detection.
- Dual mode operation – two converters in one enclosure (LMC-02 models).
- Compact: suitable for installation in field or mobile systems.
OPTOKON LMC Model Comparison Table
Model | Ethernet Speed | Number of Converters | Optical Interface | LAN Interface | Power Supply | Features and Support | Model Features |
LMC-01.BF | Fast Ethernet (100 Mbps) | 1 | HMA Expanded Beam | Rugged RJ-45 | 10–36 V DC | Auto MDI/MDIX, LFP, VLAN passthrough | Basic industrial network media converter |
LMC-01.BC | Fast Ethernet (100 Mbps) | 1 | HMA Expanded Beam | RJ-45 (with PoE PD) | PoE (Powered Device) | Store-and-Forward, Auto Negotiation | Operates without external power – powered via PoE |
LMC-01.GF | Gigabit Ethernet (1 Gbps) | 1 | HMA Expanded Beam | Rugged RJ-45 | 10–36 V DC / PoE PD | VLAN, Web management, ALS, LFP, RMON | Managed media converter with PoE support |
LMC-02.GF | Gigabit Ethernet (1 Gbps) | 2 (independent) | HMA Expanded Beam | Rugged RJ-45 | 10–36 V DC | VLAN, LFP, Web management, Bandwidth Control | Two gigabit converters in one enclosure |
LMC-01.GC | Gigabit Ethernet (1 Gbps) | 1 | HMA Expanded Beam | Rugged RJ-45 | 10–36 V DC / PoE PD / USB | LFP, Jumbo Frame 9K | Compact version powered via USB or PoE |
LMC-02.GC | Gigabit Ethernet (1 Gbps) | 2 (independent) | HMA Expanded Beam | Rugged RJ-45 | 10–36 V DC | LFP, Jumbo Frame 9K, Store-and-Forward | Dual compact media converter |
LMC-02.GCD | Gigabit Ethernet (1 Gbps) | 2 (independent) | HMA-J (4-channel) | Rugged RJ-45 | 10–36 V DC | LFP, Jumbo Frame 12K | Two converters with combined 4-channel HMA-J interface |
LMC-01.GCS | Gigabit Ethernet (1 Gbps) | 1 | HMA Expanded Beam | D38999 (18-pin) | 10–36 V DC | LFP, Jumbo Frame 12K | Military version with combined LAN + power connector |
Design Features
- Mechanical strength: anodized aluminum enclosure, resistant to shocks and vibrations.
- HMA Expanded Beam technology: contactless optical connection, insensitive to dust and moisture.
- Easy integration: connection via PoE or external power supply.
- Minimal maintenance: no optical contamination, low degradation.
- Configuration flexibility: single or dual converters, various connector types.
- Compatible with field power systems and 24–48 V DC networks.
Technical Specifications (Common for the Series)
Parameter | Values |
Throughput | 100 Mbps or 1 Gbps |
Optical Range | 2 km (MM) / up to 50 km (SM) |
Operating Temperature | –40°C … +75°C |
Power Supply | 10–36 V DC / PoE PD / USB |
Enclosure | Metal, IP65 |
Connectors | HMA Expanded Beam / RJ-45 / D38999 |
Enclosure Size | Compact, field format |
Indicators | LEDs for power, link, and activity |
Certification | NATO Supplier Code: 1583G |
Typical Applications
- Military C4ISR networks and field communications
- Mobile command posts, transport systems, armored vehicles
- Industrial enterprises, mines, oil refineries
- Security systems, video surveillance, process automation
- Energy facilities and critical infrastructure
Get a custom LMC media converter configuration adapted to your operating conditions. Contact our sales department at info@optokon.ua for full technical specifications and consultation.
FAQ — Frequently Asked Questions About OPTOKON LMC Media Converters
1. What is a media converter and what is it used for?
A media converter is a device that converts an Ethernet signal from a copper cable (RJ-45) to a fiber optic signal (via optical fiber) and vice versa.
The LMC series allows data transmission over long distances (up to 50 km) in locations where standard Ethernet cannot operate due to interference, noise, or cable length.
2. What is the difference between Fast Ethernet and Gigabit Ethernet models?
- Fast Ethernet (100 Mbps) — for stable, energy-efficient connections where gigabit speed is not required (models LMC-01.BF, LMC-01.BC).
- Gigabit Ethernet (1 Gbps) — for systems with high-speed requirements (video streams, tactical networks, industrial monitoring systems).
Gigabit models also support Jumbo Frame, VLAN, Link Fault Pass-Through, and web management.
3. What does HMA Expanded Beam mean?
HMA Expanded Beam is a military standard for optical connectors using a expanded optical beam.
Benefits:
- Connection is resistant to dust, moisture, or scratches,
- No constant cleaning required,
- Ensures stable signal transmission even in field or transport environments.
This technology is used in military, aviation, and industrial systems.
4. What is the difference between LMC-01 and LMC-02 models?
- LMC-01 — single media converter in one enclosure.
- LMC-02 — two independent converters in one enclosure (saves space and simplifies system deployment).
LMC-02.GF, LMC-02.GC, and LMC-02.GCD models are often used in tactical switches or redundancy systems.
5. How is the LMC-02.GCD different from other dual converters?
The LMC-02.GCD model features a single 4-channel HMA-J optical connector combining two converters.
This reduces the number of cables and connectors, improving mechanical reliability and simplifying installation in field systems.
6. What types of power supply are supported?
Depending on the model:
- 10–36 V DC — standard power via 3-pin or D38999 connectors;
- PoE (PD) — powered via Ethernet cable (e.g., for IP cameras or radio modules);
- USB — in compact models (LMC-01.GC) as backup or mobile power.
7. Is configuration required before operation?
Most models require no configuration — simply connect power, optical cable, and LAN.
However, managed models (LMC-01.GF, LMC-02.GF) have a web interface for setting VLAN, QoS, LFP, diagnostics, bandwidth, etc.
8. What is the maximum transmission distance?
- Up to 2 km via multi-mode (MM) fiber.
- Up to 50 km via single-mode (SM) fiber.
- Actual distance depends on fiber type and transmitter (laser/LED).
9. Can LMC be used in civilian projects?
Yes. Although LMC is designed for military and tactical applications, it is perfectly suitable for civilian infrastructure:
- Industrial automation systems,
- Video surveillance over large areas,
- Energy facilities,
- Transport hubs, railways, tunnels, oil & gas industry.
10. Can custom-configured converters be ordered?
Yes. OPTOKON offers customization — choose power type, number of ports, enclosure type (standard or mini), HMA or D38999 connectors, and required speed (Fast/Gigabit).
Contact info@optokon.ua for custom configurations.
11. What advantages do LMC media converters have over standard ones?
- Compliance with military standards MIL-STD-810G, NATO Supplier Code 1583G.
- Operation in harsh conditions (moisture, dust, vibrations, temperature).
- Metal sealed enclosure, field-grade connectors instead of plastic RJ-45.
- Compatibility with tactical communication systems, industrial controllers, cameras, etc.
12. How to determine the required fiber type (MM or SM)?
- Up to 2 km — use multi-mode (MM) fiber (50/125 or 62.5/125 μm).
- Over 2 km — use single-mode (SM) fiber (9/125 μm).
LMC supports both types; just select the correct connector type when ordering.
13. Do LMC media converters support link redundancy?
Yes. The Link Fault Pass-Through (LFP) function instantly reports a link break, allowing backup channels or routers to switch automatically without data loss.
14. Can multiple LMC converters be integrated into a single system?
Yes, LMC supports serial or parallel connection to create network lines or redundancy schemes.
LMC-02 models with two converters are especially convenient for building dual channels or monitoring systems.
15. What is the service life of LMC series media converters?
The average MTBF (Mean Time Between Failures) exceeds 100,000 hours, and with proper operation, the device can function for over 10 years without optical interface degradation.
16. Are OPTOKON products certified for military projects?
Yes.
The manufacturer holds NATO Supplier Code: 1583G and supplies equipment to NATO armies.
All LMC series devices undergo vibration, temperature, sealing, EMI/EMC testing according to MIL-STD-810G and MIL-STD-461F standards.
