Aitech E190

Introduction

Aitech's E190 Convection/Radiation cooled CompactPCI/VPX computer enclosure is built to be rugged and reliable as well as lightweight and compact. EMI/RFI protected and environmentally sealed, the E190 is capable of withstanding extreme environmental conditions of temperature, humidity, shock, vibration, EMI and chemical exposure. This makes it ideal for use in military and other harsh environment applications.

Sturdy Mechanical Design

The E190 is constructed of durable CNC machined 6061-T6 aluminum. Fasteners are stainless steel and often-used threads have selflocking stainless steel helicoils to withstand severe vibration and shock. All connectors are located on the front panel of the enclosure for easy access. Sidewalls are externally finned for natural convection and radiation cooling without sacrificing ruggedness. Designed with a built-in lifting handle for convenient handling, the E190 is equipped with brackets and captive screws for convenient hard mounting.

Board Capacity

The E190 accommodates two standard 3U CompactPCI or VPX boards with 1.0 inch pitch, including:

• ANSI/VITA 30.1-2002 cards
• ANSI/VITA 46.0-2007 and ANSI/VITA 48.2- 2010 cards

Backplane

The E190 is available with a 2-slot 3U CompactPCI or 3U VPX compliant backplane.

The CompactPCI backplane has a standard CompactPCI bus, and the VPX backplane has a PCIe data plane comprising a single x8 port of up to 5 GHz.

I/O signals from the card slots are routed to front panel I/O connectors via the I/O Transition Board.

Standard E190 backplanes are designed for compatibility with Aitech's Compact PCI (C800, C900) or VPX (C870) SBCs, providing the appropriate controlled impedance, differential, and fenced traces for the I/O of those boards. Custom backplanes and I/O Transition Boards can be designed for compatibility with other SBCs or to meet specific customer requirements.

The backplane is designed to mate with the I/O Transition Board (see below) using high density connectors.

Front Panel

The front panel features a flexible configuration of connectors that conform to military standards, one for input power and all others for I/O. It may also be equipped with any of the following options: LED indicator to track system operation, On/Off switch, and external grounding screw.

Front Panel I/O Transition Board

Input power and I/O signals are routed from front panel connectors to the backplane via a solid state I/O transition board that is hard mounted to the enclosure front panel and that plugs into the backplane using high density connectors. The solid state design provides high reliability and maximum signal integrity using optimum signal routing, controlled impedance, and signal fencing as appropriate. Filtering elements can also be incorporated in accordance with specific signal and EMI/RFI requirements. The modular nature of the transition module also simplifies maintenance of the enclosure.

The customized backplane and the I/O transition board are designed using the same I/O signal characteristics, ensuring full matching of controlled impedances and signal integrity.

Thermally Efficient

Heat generated by cards in the enclosure is conducted through the aluminum sidewalls and dissipated by the exterior fins to the surrounding air by means of natural convection and, to a lesser degree, radiation; external forced air or base plate cooling are not required.

Electro-Magnetic Compatibility

Aitech's E190 minimizes emission and susceptibility interference with these features:

• Metal-to-metal clamping with conductive surfaces and fasteners
• Conductive seals
• Shielded power supply board
• Input line filter on the inner surface of the front panel for reduced EMI/RFI noise to/from power cable, additional line filter module on the power
  supply board.
• Optional filtering of I/O signals per customer specifications
• Isolated chassis; input; and digital grounds, with optional connections between them.
• External chassis grounding screw.

Environmental Sealing

The E190 is sealed against humidity, rain, and splash. Enclosure mating surfaces are sealed with hollow silicone rubber seals. Connectors and other accessories are protected in the same manner.

Corrosion Resistant Finish

External surfaces of the E190 are hard anodize coated for excellent corrosion resistance. As an option, epoxy paint is available upon request. Internal surfaces are chemical conversion coated for corrosion resistance and electrical conductivity. All finishes and components are fungus resistant. All internal boards are conformally coated.

High Performance Power Supply

The E190 is furnished with Aitech's P230 power supply, with nominal 28 V input for military/airborne applications. The P230 is a 150 W power supply providing continuous high current, high efficiency operation, under the most adverse conditions. The power supply is modular and plugs into the backplane in similar fashion to the CompactPCI or VPX cards in the system.

For more details, refer to datasheet.