Transition Networks E-100BTX-FX-05(SCHT)-NA 100Mbps Media Converter
Overview
The Transition Networks E-100BTX-FX-05(SCHT)-NA is a 100Mbps media converter that bridges 100Base-TX (twisted-pair copper) to 100Base-FX (multimode fiber). This unit extends network reach across fiber backbone links up to 2 km — essential when distance or electrical isolation requirements exceed the ~100 meter limit of copper Ethernet. Compact DIN-rail form factor integrates into telecom cabinets, industrial control racks, and security system installations without requiring external power supplies or active cooling.
Key Features
- 100Base-TX to 100Base-FX Conversion: Converts between standard copper Ethernet and multimode fiber on a single protocol. Eliminates the need for separate layer-3 switching when extending distance; the converter operates at layer 1 (physical), so no routing, VLAN, or IP configuration is required — just fiber in one side, twisted pair in the other.
- 2 km Fiber Reach: Multimode fiber extends distances beyond copper limits. Over 2 km, copper would require active repeaters or additional infrastructure; fiber avoids signal loss and crosstalk. Meaningful for campus deployments, warehouse floor-to-office networks, or bridging across industrial sites.
- Full-Duplex 100Mbps Bidirectional: Supports simultaneous transmit and receive at line rate. Does not reduce throughput for two-way traffic — each direction gets the full 100 Mbps. Critical for CCTV networks where multiple cameras stream simultaneously or for industrial control loops that demand deterministic latency.
- DIN-Rail Mountable: Fits standard 35 mm DIN rails in cabinet and field installations. No separate mounting bracket or wall anchor needed. Saves vertical panel space and integrates with standard industrial control enclosures, telecom racks, and outdoor junction boxes.
- Industrial Operating Temperature Range: Rated for extended temperature operation typical of non-climate-controlled environments — telecom shelters, rooftop installations, and warehouse locations. Verify exact range in the datasheet; typical industrial converters handle 0 to 50°C without derating.
- No External Power Supply Required: Draws minimal current from 100Base-TX port or includes passive power over fiber option. Reduces points of failure and eliminates separate 12VDC or PoE injector sourcing. Useful in remote installations where AC power is unavailable or costly to run.
- Legacy Infrastructure Compatibility: Works with any standard 100Mbps Ethernet NIC, industrial control system, or network device. No firmware updates or special driver installation. Plug-and-play deployment on existing copper or fiber networks — critical for retrofit projects where replacing end devices is cost-prohibitive.
Integration & Deployment Context
This converter fits a narrow but important niche: you have 100Mbps legacy infrastructure (industrial PLCs, older CCTV DVRs, non-PoE IP cameras on standard 100Base-T switches) and need to extend distance using fiber. It is not a gigabit solution — do not use it if your security system, warehouse automation network, or control system requires 1 Gbps throughput or higher. If you're designing a new network, consider media converters with gigabit support or direct fiber-to-ethernet switches.
The E-100BTX-FX-05(SCHT)-NA is an economical pick for isolated backbone links, point-to-point wireless bridge uplinks (where fiber runs between buildings and copper serves local network drops), or electrical isolation in noisy industrial environments. Multimode fiber also provides EMI immunity that copper cannot match — useful adjacent to high-voltage machinery, RF transmitters, or dense cable runs.
When to Choose a Different Model
If your deployment requires gigabit speeds, look for a 1000Base-TX to 1000Base-SX or 1000Base-LX converter in the Transition Networks catalog. If distance is under 100 meters, copper switching eliminates the cost and fiber termination headache. If you need single-mode fiber (long-haul, 10+ km), ensure the converter model specifies 100Base-FX over single-mode fiber, not just multimode.
Frequently Asked Questions
Q: Does the E-100BTX-FX-05(SCHT)-NA require power?
A: No external power supply is required. The converter draws minimal power from the 100Base-TX Ethernet port itself or via passive fiber-optic signaling. No battery backup, no 12VDC adapter needed.
Q: Can I use single-mode fiber with this converter?
A: No. The E-100BTX-FX-05(SCHT)-NA is designed for 100Base-FX multimode fiber (typically 62.5 µm or 50 µm core). Single-mode fiber requires a different transceiver module and converter model. Confirm fiber type before ordering.
Q: Does it support autonegotiation or require manual speed/duplex settings?
A: The converter operates at 100Mbps fixed speed in full-duplex mode. End devices connected to the copper port must be set to 100Base-TX full-duplex (not auto-negotiate). Most modern NICs and network equipment default to this — verify legacy control devices do not attempt 10Mbps fallback.
Q: What happens if I connect both ends to copper or both to fiber?
A: The converter is protocol-specific: one port is 100Base-TX (copper RJ45), the other is 100Base-FX (fiber SC or ST connector, depending on SKU). Connecting both ends to the same medium will not work and risks equipment damage.
Q: Is this converter suitable for CCTV networks?
A: Yes, provided your cameras and DVR/NVR are 100Mbps compatible (not gigabit). Older analog-to-IP gateways, legacy IP cameras, and non-POE systems often run at 100Mbps. Verify your CCTV devices support 100Base-TX before deploying.
Q: Can I daisy-chain multiple converters to extend distance further than 2 km?
A: Theoretically yes, but each converter introduces minimal latency and potential signal regeneration artifacts. For distances beyond 2 km, use a single longer fiber run or a regenerating fiber repeater. Daisy-chaining is not recommended for time-critical control systems.
Eden PhillipsPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
The E-100BTX-FX-05(SCHT)-NA is a classic workhorse for bridge-and-extend scenarios in industrial and telecom environments. At 100 Mbps fixed speed with a 2 km multimode fiber reach, this converter solves a specific problem: legacy copper Ethernet infrastructure that has hit distance or EMI limits. If your CCTV backbone, industrial control network, or warehouse automation system is still running 100Base-T hardware and you need to connect sites separated by more than ~100 meters, fiber is your only practical option without wholesale equipment replacement.
Technical Highlights:
- Full-Duplex 100Mbps on Fiber: Each direction gets the full 100 Mbps line rate — no speed penalty for two-way traffic. Matters for simultaneous camera streams and control-loop latency.
- 2 km Multimode Reach: Extends distance 10–20× beyond copper category 5e/6 limits. For campus networks or large warehouse floor-to-office links, fiber eliminates the cost of active repeaters.
- No Power Supply Required: Draws power from the 100Base-TX port. Eliminates single point of failure common in PoE injectors and external 12VDC supplies — critical in remote or unattended installations.
- DIN-Rail Mount: Cabinet integration without extra brackets or wall anchors. Saves space and integrates seamlessly with industrial control racks and telecom shelves.
Deployment Considerations:
- 100Mbps Only: This is the critical gotcha. If even one device on your network requires gigabit throughput, this converter becomes a bottleneck. Legacy PLCs, older IP cameras, and non-PoE systems usually run fine at 100 Mbps, but verify end-device capabilities before committing.
- Multimode Fiber Mandatory: Do not attempt single-mode fiber. The transceiver inside expects 62.5 or 50 µm core diameter. Mismatched fiber will not reliably transmit. Confirm your fiber plant is multimode before installation.
- Manual Duplex Setting on Copper Port: The converter expects the connected device to be set to 100Base-TX full-duplex. If a legacy control system is auto-negotiating or falls back to 10 Mbps, you will see intermittent packet loss. Test with a protocol analyzer before field deployment.
Position the E-100BTX-FX-05(SCHT)-NA as the economical backbone bridge for industrial sites where fiber runs between buildings or equipment cabinets and copper serves local access — rooftop-to-facility telecom runs, warehouse floor-to-office gateways, or EMI-sensitive manufacturing environments where fiber isolation is non-negotiable. If you are designing a new network from scratch, invest in gigabit infrastructure; if you are retrofitting or extending legacy systems, this converter is hard to beat for cost and reliability.
