ABCU-402A-1 PTPv1/v2 Client or Grandmaster, Dual Ethernet Output, DARv3 and IRIG-106 Chapter 10 Packet Formats

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Key Features

  • Dual-port bi-directional, full-duplex, Gigabit Ethernet connection with auto-sensing
  • DARv3 and IRIG-106 Ch.10 packetization structures
  • Synchronization using PTPv1 or PTPv2, or acts as PTPv1 or PTPv2 Grandmaster
  • Programming and verification of ADAU chassis using TFTP
  • In system programmability of firmware and FPGA
  • Supports Gigabit link with ADAU user modules and 380 Mbps data throughput to external Ethernet connections

Applications

Ethernet based data acquisition systems

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The ABCU-402A is a dual-port full-duplex, Gigabit Ethernet, ADAU Overhead module packet programmer and an IPv4 data packets transmitter. The ADAU Overhead module supports chassis programming via Ethernet using Trivial File Transfer Protocol (TFTP). Synchronization with an external PTP Grandmaster is achieved using IEEE 1588-2004 Precision Time Protocol version 1 (PTPv1) or IEEE Std 1588-2008 Precision Time Protocol version 2 (PTPv2). The ABCU-402A can also act as a PTPv1 or PTPv2 Grandmaster.

In acquisition mode, some or all acquired data is transferred from the backplane to the CVT. Onboard, it is packetized into a DARv3 or IRIG-106 Ch.10 application layer packet. Assembled packets can be transmitted simultaneously on either or both Ethernet outputs. For asynchronous bus data, the ABCU-402A supports aperiodic transmission for efficient bandwidth use, whereby packets are not generated unless fresh data has been acquired from a packetizer user-module.

The ABCU-402A includes an embedded HTTP server, which allows channels to be balanced on supported analog modules. The ABCU-402A supports routing Ethernet frames received from either Ethernet port to modules in the chassis. This feature allows Ethernet packets to be sent directly to a recorder or PCM transmitter module (among other modules).

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