EKF - Short Profile
EKF - Short Profile


Mezzanine Side Card for CPU Boards
PCIe x4 (NVMe) M.2 SSD • Quad Front Panel M12-X Gigabit Ethernet
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SCL-RHYTHM • CPU Mezzanine Expansiom Side Card w. 4 x M12-X GbE & NVMe M.2
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Mezzanine CPU Side Card • M.2 NVMe & Quad M12-X Gigabit Ethernet

The SCL-RHYTHM is a mezzanine side card for EKF CPU boards, provided with a socket for a PCI Express® based M.2 mass storage module, and four independent Gigabit Ethernet controllers for universal networking.

The SCL-RHYTHM is suitable for EKF CPU cards such as the SC4-CONCERTO or SC5-FESTIVAL, which are equipped with two HSE (high speed expansion) mezzanine connectors, for eight PCIe® Gen3 lanes.

The M.2 socket can accommodate an NVMe type SSD module up to the 2280 form factor, with a PCIe® x4 Gen3 interface for superior data transfer rates. When used as main mass storage device, the NVMe SSD can speed up the overall system performance dramatically.

Four I210-IT networking controllers supporting TSN Gigabit Ethernet are wired to X-coded M12 front panel connectors, for rugged applications such as railway and transportation.

SCL-RHYTHM • Multifunction CPU Mezzanine Side Card w. 4 x M12-X GbE & NVMe M.2

SCL-RHYTHM CPU Mezzanine Side Card w. 4 x M12-X GbE & NVMe M.2

Feature Summary

  • Mixed function mezzanine side card for EKF CompactPCI® Serial CPU boards
  • Based on new mezzanine connectors HSE1/HSE2 (8 x PCIe® Gen3)
  • Suitable e.g. for use with CPU cards SC5-FESTIVAL, SC8-FLUTE, SC9-TOCCATA, PC7-FESTIVAL
  • Provides Gigabit Ethernet front panel I/O (4 x M12-X)
  • Provides mass storage capability (M.2 NVMe)
  • 8HP assembly together with CPU card
  • Proprietary PCB dimensions for optimized CPU card processor heat sink

  Front Panel I/O
  • 4 x M12 X-coded front panel GbE receptacles, rail approved, Cat6A, IEC 61076-2-109
  • 1000BASE-T, 100BASE-TX, 10BASE-T compliant data transfer rate front ports
  • Future proof investment into cabling infrastructure - up to 10Gbps with M12 Cat6A
  • M12 X-coded to RJ45 connector Cat6A cable assemblies available from several suppliers

  On-Board Mass Storage Options
  • M.2 (formerly known as NGFF) socket for an NVMe type SSD module up to 2280 size
  • PCI Express® Gen3 x4 interface (M-key socket)
  • Socket height 4.2H (double sided module allowed)
  • Capacity up to 2TB as of current
  • Suitable for operating system installation (boot device)

  • Four individual networking interface controllers (NIC), based on PCI Express®
  • 1000BASE-T, 100BASE-TX, 10BASE-T connections
  • TIntel® I210-IT -40°C to +85°C operating temperature GbE controllers w. integrated PHY
  • IPv4/IPv6 checksum offload, 9.5KB Jumbo Frame support, EEE Energy Efficient Ethernet
  • IEEE 802.1Qav Audio-Video-Bridging (AVB) enhancements for time-sensitive streams (TSN)
  • IEEE 1588 and 802.1AS packets time stamping for high-precision time synchronization
  • All GbE ports wired via M12 X-coded front panel connectors

  • Local expansion (side card) for EKF CPU boards
  • Industrial networks - IoT - TSN
  • Rugged environments
  • Router and gateway
  • Data acquisition
  • Edge computing
  • Railway usage via front panel M12 cabling
  • Transportation vehicles, construction and harvesting machinery

  Regulation & Environmental
  • Designed & manufactured in Germany
  • ISO 9001 certified quality management
  • Custom specific development on request
  • Long term availability
  • Coating, sealing, underfilling on request
  • RoHS compliant 2002/95/EC
  • Operating temperature -40°C to +85°C (industrial temperature range)
  • Storage temperature: -40°C to +85°C, max. gradient 5°C/min
  • Humidity 5% ... 95% RH non condensing
  • Altitude -300m ... +3000m
  • Shock 15g 0.33ms, 6g 6ms
  • Vibration 1g 5-2000Hz
  • EC Regulatory EN55035, EN55032, EN62368-1 (CE)
  • MTBF 48.9 years (MIL-HDBK-217F, SN29500 @+40°C)

SCL-RHYTHM • CPU Mezzanine Expansiom Side Card w. 4 x M12-X GbE & NVMe M.2

SCL-RHYTHM • CPU Mezzanine Expansiom Side Card w. 4 x M12-X GbE & NVMe M.2

SCL-RHYTHM • Simplified Block Diagram

SCL-RHYTHM • Simplified Block Diagram
Ordering Information
Please refer to List 21 for popular SCL-RHYTHM SKUs
EKF is an ISO-9001 certified company
EKF Elektronik GmbH • Philipp-Reis-Str. 4 • 59065 Hamm • Germany
Phone +49 (0)2381/6890-0 • Fax +49 (0)2381/6890-90 • E-Mail