Aitech E193

Introduction

Aitech's E193 natural air, convection-cooled powered enclosure is built to be rugged and reliable as well as lightweight and compact. EMI/RFI protected and environmentally sealed, the E193 is capable of withstanding extreme environmental conditions of altitude, temperature, moisture, shock, vibration, EMI and chemical exposure, making it ideal for use in military and aerospace environments.

Sturdy Mechanical Design

The E193 is constructed of durable CNC machined 6061-T6 aluminum. Fasteners are stainless steel and removable cover screw threads have self-locking stainless steel helicoils to withstand severe vibration and shock. All I/O connectors are located on the front panel of the enclosure for easy access. The E193 is also equipped with two front mounting J hooks and two rear dagger pin hold-down receptacles to facilitate installation in ARINC 404 1/2-ATR mounting trays.

Board Capacity

The E193 accommodates 4 conduction-cooled 3U CompactPCI board per VITA 30.1-2002 with 0.8 inch pitch, and a 3U conduction-cooled power supply.

Compact PCI Backplane

The backplane is 3U CompactPCI compliant with J1 and J2 connectors in all slots. DC input power is routed to the power supply via a separate screened harness so as to prevent radiated or conducted EMI.

All I/O signals from the CompactPCI slots are routed via the backplane to wire-wrap posts that can be easily customized for specific applications.

Front Panels

A removable front access panel features a flexible configuration of user-defined circular connectors, one for input power and all others for I/O. All connectors are located on the front access panel.

Front Panel and Backplane Wiring

The front panel can accept a number of wiring options to facilitate easy I/O customization during prototyping, or support lower cost options for production.

For prototyping, the I/O connectors can be wired directly to wire wrap pins to each of the 3U module slots on the backplane. This flexibility allows low cost wiring additions or changes to be made during the initial program development phase. Once finalized and released to production, an I/O transition module or Flex circuit can be utilized to connect the I/O to the backplane to reduce overall production and labor costs.

Thermally Efficient

The conduction-cooled, VITA30.1-2002 compliant boards are environmentally sealed within the Chassis. The CompactPCI boards and power supply are positively clamped to the side walls of the chassis providing a direct thermal path to the mounting brackets.

Electro-Magnetic Compatibility

Aitech's E193 minimizes emission and susceptibility interference with these features:

• Bolted corners with conductive surfaces provide 2.5 milliohms or less of DC resistance
• 2 inch max screw spacing on all covers and side panels to control EMI apertures
• Conductive O-ring gaskets provide environmental and electro-magnetic sealing
• Separately shielded input power assembly
• Line filter capacitors on the input power assembly eliminate conducted emissions.

Environmental Sealing

The E193 is sealed against intrusion of external environment contaminants found in military applications, including: humidity, sand and dust, and contaminant splash. Enclosure mating surfaces are sealed with aluminum filled fluorosilicon gaskets. Connectors and other accessories are protected also in the same manner.

Corrosion Resistant Finish

External surfaces of the E193 are finished with black hard anodize which offers excellent corrosion resistance. A painted finish is available in standard military colors, or CARC and nonstandard colors available upon request. Internal surfaces are chemical conversion coated for corrosion resistance and electrical conductivity. All finishes and components are fungus resistant.

High Performance Power Supply

The modular and removable power supply unit provides continuous high current, high efficiency operation under the most adverse conditions. The power supply may be easily replaced by the user to avoid enclosure maintenance downtime.

For more details, refer to datasheet.