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The KAD/BCU/105 is a full-duplex 100BASE-TX Ethernet Acra KAM-500 backplane controller, programmer and packet generator.

In acquisition mode some or all acquired data is transferred from the backplane to the onboard CVT. Onboard, it is packetized into a user-defined structure. Once full, the packet is transmitted via UDP.

Any number of user-defined IENA packet structures can be handled simultaneously. Different packet identifiers, packet sizes and destination IP addresses can be individually programmed for each packet type. Destination IP addresses can be unicast, multicast, or broadcast.

Upon reception of a programming packet, the module immediately exits acquisition mode and switches to program/verify mode. In program/verify mode it can read or write data blocks to or from any module within an Acra KAM-500 chassis.

The Acra KAM-500 backplane controller supports chassis programming via Ethernet. Synchronization is achieved using the IEEE 1588 PTP.

The KAD/BCU/105/AB1/ET supports IPv4 networks with fixed IP address allocation, including user-assignment of the module's IP address. The module is factory-programmed with a unique Ethernet MAC address.


  • Programming and verification of Acra KAM-500 chassis
  • Synchronization with an external IEE 1588 Precision Time Protocol version 1 (PTPv1) source
  • Bi-directional, full-duplex, 100BASE-TX Ethernet connection with auto-MDIX
  • Static IP address, upper 16 bits permanently set to 172.28; lower 16 bits assigned via top block wiring
  • User Datagram Protocol (UDP) support for packets up to 64 kbyte (32 kilosamples) via IP fragmentation
  • Current Value Table (CVT) of up to 1 megasample
  • IPv4 protocol supported
  • Supports Address Resolution Protocol (ARP) and ping
  • Operating temperature from -55 to 85°C (105°C variant available)


  • Ethernet based data acquisition systems
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