KAD/BCU/140 Ethernet backplane controller - IENA/iNET-X compatible with TFTP programming

The KAD/BCU/140 is a full-duplex Ethernet Acra KAM-500 backplane controller, programmer, and IPv4 packet generator with a link speed of 100BASE-TX.

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 using the Internet Engineering Task Force (IETF) RFC 1350 TFTP. Synchronization is achieved using PTPv1. The KAD/BCU/140 supports the Simple Network Management Protocol (SNMPv2c) that can be used to query and discover configuration of the chassis.

In acquisition mode some or all acquired data is transferred from the backplane to the onboard CVT. Onboard, it is packetized into either an IENA or iNET-X application layer packet. Once the packet has been assembled, it is transmitted. For asynchronous bus data, the KAD/BCU/140 supports aperiodic transmission for efficient bandwidth use, whereby a packet is not generated if no fresh data has been acquired from a packetizer user-module.

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Features

  • Bi-directional, full-duplex Ethernet connection with auto-sensing
  • User-assigned Internet Protocol (IPv4) address
  • IPv4 protocol with IP fragmentation support
  • Supports Address Resolution Protocol (ARP) and ping
  • Programming and verification of Acra KAM-500 chassis using Trivial File Transfer Protocol (TFTP)
  • Synchronization with a network IEEE 1588-2004 Precision Time Protocol version 1 (PTPv1) Grandmaster time source
  • UDP support for packets up to 64 kbyte (32 ksamples)
  • Current Value Table (CVT) of up to 1 Msample
  • IENA and iNET-X compatible packetization structures
  • Supports aperiodic transmission

Applications

  • Ethernet based data acquisition systems
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