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North Atlantic 75C3 – 3U cPCI I/O & communications Board

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Three I/O and communication function module slots— A variety of modules to choose from


  • Support for 3 independent, intelligent function modules
  • A variety of I/O and communication modules to choose from
  • Control via either PCI Bus or Gigabit Ethernet (Gig-E) interface
  • Connections via front panel, rear panel, or both
  • Automatic Background Built-in-Test (BIT) (module dependent)
  • Software Support Kits (SSKs) and drivers available
  • Commercial and rugged models
  • Operating temperature: 0° C to 70° C commercial, -40° C to +85° C rugged



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The 75C3 is a 3U cPCI multifunction I/O and communications card. The motherboard contains 3 independent module slots, two of which can be populated with a function specific module and the third with either a combination module featuring 4 multiplexed A/D channels and 28 Discrete I/O programmable channels, or with a reference supply. The enhanced motherboard, using multiple DSP, allows for higher processing power and dedicated control for each module. This unique design eliminates the need for multiple, specialized single function cards by providing a single board solution for a broad assortment of I/O, Synchro/Resolver, LVDT and other signal interface functions that can be controlled either via the cPCI Bus or 10/100/1000BaseT Ethernet. The available functions are listed on the following page. Additionally, the 75C3 incorporates serial communications modules such as RS232/422/485, MIL-STD-1553, CANBus and ARINC 429. Our approach increases packaging density, saves enclosure slots, reduces power consumption and adds continuous background BIT testing. A Software Support Kit (SSK) is provided.

Automatic background BIT testing, an important feature, is always enabled and continually checks the health of each channel. There is no need to guess or make assumptions about system performance. A fault is immediately reported and the specific channel is identified. This capability is of tremendous benefit because it identifies and reports a failure, without the need to shut down the equipment for troubleshooting. Testing is totally transparent to the user, requires no external programming and has no effect on the standard operation of the card. (See Operations Manual for more detailed information).

NAI’s 75C3 is a 3U cPCI multifunction I/O and communication board with three independent function module slots. Two of the slots can be configured with a variety of I/O and communication functions; the third, with either a combination module featuring four multiplexed A/D channels and 28 Discrete I/O programmable channels, or with a reference supply. Using multiple DSPs, the enhanced motherboard enables higher processing power and dedicated pre-processing control for each module.

By eliminating the need for multiple, specialized, single-function boards, this unique design increases packaging density, saves enclosure slots, and reduces power consumption. The 75C3, a low-power/high-performance 3U cPCI board, is ideally suited for rugged defense, industrial, and commercial applications.

Pre-existing, fully-tested functions can be quickly and easily combined in an unlimited number of ways. Each I/O function has dedicated processing, unburdening the system Single Board Computer (SBC) from unnecessary data management overhead.

The 75C3 includes Software Support Kits (SSKs) for multiple operating systems. In addition, SSKs are supplied with source code and board-specific library I/O APIs to facilitate system integration.

Accelerate your Time-to-Mission with a 3U cPCI multifunction board from NAI.


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