Description
EKF CN4-BELL | 3U CompactPCI Quad Fast Ethernet Controller
Dynamic Product Introduction
Harsh modular industrial networks demand compact routing hardware capable of bridging isolated subnets without wasting precious backplane slot real estate. Integrating an EKF CN4-BELL (ETH4) quad-port controller into a 3U CompactPCI chassis immediately expands multi-lan connectivity while keeping mechanical footprints minimal.
Unlike standard single-port network cards that quickly overcrowd industrial backplanes, this specialized interface packs four distinct 10/100 Mbps MAC/PHY channels onto a single Eurocard. Deploying a fresh CN4-BELL unit delivers an instant performance boost for high-availability setups—enabling parallel redundancy, segmented firewall configurations, and deterministic fieldbus-to-ethernet data concentration.
CN4-BELL
Key Technical Specifications
| Core Parameter | Technical Specification |
| Product Model | CN4-BELL (ETH4 / CN4-1-BELL) |
| Manufacturer | EKF Elektronik GmbH (Germany) |
| Form Factor | 3U Eurocard (100 × 160 mm²), 4HP front panel |
| Ethernet Ports | 4x independent RJ45 connectors (ETH1 to ETH4) |
| Controller Architecture | 4x Intel 82559ER single-chip controllers |
| Data Transfer Rates | 10/100 Mbps per port (up to 200 Mbps full-duplex) |
| Bus Interface | 32-Bit, 33 MHz CompactPCI (PCI-to-PCI bridge layout) |
| Power Consumption | +3.3V (0.85A max), +5V (0.05A max via J1 connector) |
| Operating Temperature | 0°C to +70°C (Commercial Grade standard) |
| MTBF Rating | 0.269 \times 10^6 hours |
Global Sourcing & Live-Test SOP (Transparency Core)
Procuring obsolete or surplus modular industrial computing cards requires an uncompromised verification workflow to protect mission-critical backplanes from electrical failure.
- Inbound Verification: Incoming CN4-BELL shipments undergo high-magnification optical inspection of the J1 CompactPCI connector pins and holographic anti-counterfeit tracing against official EKF manufacturing logs.
- Live Simulation: Technicians seat the board onto an active 3U CompactPCI test rack powered by regulated system rails to verify backplane bus arbitration and clock synchronization.
- Diagnostics: Engineers execute full-scale packet transmission sweeps across all four RJ45 ports (ETH1 through ETH4), validating auto-negotiation, MAC address responsiveness, and 24-hour thermal soak stability.
- Final Prep: Hardware units receive complete firmware/controller revision documentation, static-dissipative wrapping, and vacuum sealing inside heavy-gauge moisture-barrier ESD shielding bags.
The Field Engineer’s Pitfall Guide
❗ CompactPCI Bus Voltage Mismatches: Forcing a 3.3V-keyed or 5V-restricted board onto an incompatible backplane VIO rail can instantly compromise the PCI bridge components. I’ve seen maintenance techs fry peripheral slot power planes simply because they ignored the keying specifications of older 3U chassis designs.
❗ MAC Address Mapping Confusion: Replacing a multi-port NIC like the ETH4 without updating the network routing table or firewall rules will isolate the node, as the replacement card introduces four entirely new MAC addresses to the subnet. Always record the physical MAC labels prior to rack insertion.
❗ Front Panel Cable Strain: Routing four heavy CAT5/6 drop cables directly out of a narrow 4HP front panel without proper strain relief can warp the board inside its guide rails, leading to intermittent J1 connector pin dropouts. Always secure incoming cable bundles to the cabinet chassis bar.
Intent-Driven FAQ
Will I lose my network configuration parameters if I swap this CN4-BELL module?
IP addresses and operating system network bindings are managed at the OS level (such as Linux or Windows registry entries) rather than stored locally on the hardware card. However, because the new board features distinct MAC addresses, you may need to update static DHCP leases or firewall authorization rules.
Are these units original factory sealed or surplus stock?
Sourced inventory pools vary between original factory-sealed boxes and fully tested, certified surplus hardware. Every single unit undergoes rigorous bench validation and communication throughput testing before dispatch.
Can this board be used for high-availability network redundancy?
Yes, the four independent channels allow engineers to implement parallel network paths, ring topologies, or failover redundancy schemes commonly deployed in demanding industrial control frameworks.
What drivers are required for operating system compatibility?
The module utilizes standard Intel 82559ER architecture controllers, which are natively supported or easily provisioned via standard driver packages for modern Linux distributions, Windows, and embedded real-time operating systems like VxWorks.
What warranty coverage accompanies a replacement network controller?
All supplied units carry a comprehensive 1-year operational warranty covering component health, chipset stability, and port-level communication integrity.
Are you integrating this module into an existing 3U CompactPCI industrial rack or setting up a new test bench environment?
