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CompactPCI®   Wireless Technologies Carrier Board
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CP4-SCAT - Wireless Technologies Carrier Card
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PCI Express® Mini Card & GSM-R (Railway) Module
Wireless Technologies Carrier Board

The CP4-SCAT is a 3U/4HP CompactPCI® peripheral board, intended for industrial and railway wireless communication.

The CP4-SCAT is provided with a PCI Express® Mini Card socket. Based on both, the PCI Express® and USB standards, PCI Express® Mini Cards became very popular for wireless industrial applications, such as WiFi (WLAN), GSM, LTE, WiMAX, GPS.

The CP4-SCAT is equipped in addition with a socket for the MC55i TRM-3a GSM-R (Railway Radio) module. GSM-R features include EIRENE and ASCI.

Up to 3 antenna connectors (SMA/RP style) in the CP4-SCAT front panel allow for MIMO (RF multiple-input multiple-output) Mini Card employment. Typically, wireless Mini Cards provide U.FL style antenna receptacles. A double ended U.FL plug coaxial cable assembly will be required for each Mini Card receptacle as interconnection to its associated front panel SMA connector. Another SMA connector is provided for the optional GSM-R module.

Furthermore, the CP4-SCAT front panel is populated with three USB 2.0 connectors for attachment of external devices.

CP4-SCAT • Wireless Technologies Carrier Board

CP4-SCAT • PCI Express® Mini Card & GSM-R (Railway) Module

The main building blocks of the CP4-SCAT are the PCI Express Mini Card socket (based on USB and PCI Express I/O), and the GSM-R modem (relies on a UART port).

A PCI to PCI Express® bridge on the CP4-SCAT converts the parallel PCI signals of the CompactPCI® backplane to serial PCI Express® data. Since the bridge provides only a single PCI Express® lane, it is fed to the upstream port of a multi-port PCIe switch for replication.

The so called SWIDGE, a combined PCI Express® packet switch and PCIe to USB bridge, has two PCIe downstream ports. One lane is used for the PCI Express Mini Card socket, the other for the PCIe based UART (Universal Asynchronous Receiver/Transceiver), which is the gateway to the MC55i/TRM-3a GSM-R module.

The SWIDGE component contains not only a PCIe switch, but also a PCIe to USB bridge. One of the channels of the quad-port USB 2.0 controller is wired to the PCIe Mini Card socket, and the remaining to the USB front panel receptacles.

PCI Express® Mini Cards are controlled either via their USB interface, or by a single lane PCIe link. Both data paths are derived from the SWIDGE component as described above, and allow for application of either type Mini Card.

The optional GSM-R modem module is controlled by AT commands via its serial interface. This is the reason why the CP4-SCAT is also equipped with a PCI Express® based UART. If no GSM-R radio is required, the UART can be either omitted, or optionally used in combination with the EKF CU7 or CU8 PHY modules for RS-232 or RS-485 I/O.

The CP4-SCAT has been designed for +5V only operation. As an option, an on-board switching regulator from +5V to +3.3V is available, which can be used to feed back +3.3V/10A to the CompactPCI® backplane in systems with a single +5V power supply.

Block Diagram CP4-SCAT

CP4-SCAT • Block Diagram
Feature Summary CP4-SCAT
Form Factor
  • Single size CompactPCI style Eurocard (160x100mm2)
  • Front panel width 4HP (20.3mm)
  • 32-bit
  • 33MHz
  • Suitable for CPCI backplanes with +5V or +3.3V VIO (J1 w/o key)
PCI Express® Mini Card
  • PCI Express® Mini Card socket
  • Suitable for WLAN, GSM, LTE, WiMax, GPS and other PCIe Mini Cards
  • Suitable for USB and PCI Express® controlled Mini Cards
  • UIM port wired to on-board SIM card holder
GSM-R Radio Module (Optional)
  • Approved quad-band GSM-R radio module Triorail TRM-3a, based on Cinterion MC55i (formerly Siemens)
  • 850/900/1800/1900 MHz, GPRS multi-slot class 10, TCP/IP, UDP, HTTP, FTP, SMTP, POP3, Hayes AT commands
  • EIRENE features: FN supported (Functional Number), PFN supported (Presentation Functional Number), REC (Railway Emergency Call)
  • ASCI features: VGCS (Voice Group Call Service), VBS (Voice Broadcast Service), UUS1 (User-to-User Signalling type 1), eMLPP (Enhanced Multi-Level Precedence and Preemption)
  • UIM port wired to on-board SIM card holder
Antenna Connectors
  • 3 x SMA/RP connectors available from the front panel, wired to on-board U.FL receptacles, suitable for double ended U.FL plug cable assemblies from Mini Card to CP4-SCAT board
  • u1 x SMA/RP front panel connector assigned to the GSM-R radio module
USB Connectors
  • 3 x USB 2.0 front panel connectors for external devices
Main Components
  • PCI to PCI Express® bridge (CompactPCI® backplane)
  • PCI Express® packet switch, three ports
  • PCI Express® USB 2.0 host controller, quad-port
  • PCI Express® UART, dual-channel (TTL level, tied to the GSM-R module AT command input)
  • Option on-board DC/DC regulator 5V to 3.3V 10A (can feed +3.3V to the CompactPCI® backplane in systems with a single +5V power supply)
Thermal Conditions
Environmental Conditions
  • Operating temperature: 0°C ... +70°C
  • Storage temperature: -40°C ... +85°C, max. gradient 5°C/min
  • Humidity 5% ... 95% non condensing
  • Altitude -300m ... +3000m
  • Shock 15g 0.33ms, 6g 6ms
  • Vibration 1g 5-2000Hz
  • Coating/sealing available on customers request
EC Regulations
  • EN55022, EN55024, EN60950-1 (UL60950-1/IEC60950-1)
  • 2002/95/EC (RoHS)
MTBF tbd
Power Requirements tbd
Items are subject to changes

CP4-SCAT • Front Panel View

CP4-SCAT • Front Panel View
Ordering Information
Please refer to List 20 for popular CP4-SCAT SKUs
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EKF Elektronik GmbH • Philipp-Reis-Str. 4 • 59065 Hamm • Germany
Phone +49 (0)2381/6890-0 • Fax +49 (0)2381/6890-90 • E-Mail