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Diamond Point International

Aitech E119 - Dual VME Slot Enclosure

Convection-Cooled Rugged Dual VME Slot Computer Enclosure

Introduction

Aitech's E119 Dual Slot VME computer enclosure is built to be rugged and reliable as well as very lightweight and compact. EMI/RFI protected and environmentally sealed, the E119 is capable of withstanding extreme environmental conditions of altitude, temperature, humidity, shock, vibration, EMI and chemical exposure. This makes it ideal for use in all military environments and especially in airborne applications. 

Sturdy Mechanical Design

The E119 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 one side of the enclosure for easy access. Sides and top walls are externally finned for radiation and convection cooling. The bottom plate is smooth and flat for additional conduction cooling when a cold plate is available. Mounting of the enclosure can be done in 2 ways: By built-in hard mounting features or by additional vibration isolators. 

VME Backplane and Board Capacity 

The E119 accommodates two standard IEEE 1101.2, 6U conduction-cooled VME64x cards. The backplane supports the VME64x bus, including 5-row, 160-pin P1 & P2 connectors, and a 95-pin P0 in both slots.

Any of the 410 pins in rows A and C, user defined pins in rows Z and D of the P2 connectors, and the I/O pins from each of the two P0 connectors can be routed to the front panel I/O connectors.

The backplane is equipped with DIN41612 I/O connectors, designed for a detachable crimp type wire harness, to connect I/O signals between the backplane and front panel I/O connectors, using harnessing internal to the chassis.

Specification

Enclosure Specifications

GeneralRugged Chassis for Mobile Military Applications
Designed for Harsh Mechanical, Climatic, Chemical and Electrical Stresses
Environmentally Sealed
Compact and Lightweight with a Dual VME Slot
Internally Conduction-cooled; Externally Convection- and Radiation-cooled
Optional Wire Rope Vibration Isolators with Two Mounting Configurations
Optional Cold Plate Conduction Cooling
Fully Sealed Faraday Cage and Complete EMI/RFI Power Line Filtering
Standard Front Panel Connector Configuration Enables Quick Prototyping
Customization Options: Front Panel, I/O Connectors, I/O Harnessing, Mounting and Finish
Multi-output Integral 28 VDC Input VME Power Supply
Customized Card Access Panel
Optional PCMCIA Card Access Door
CapacityThe E119 accommodates two standard IEEE 1101.2, 6U conduction-cooled VME64x cards.
PSUVoltage Range (DC): 18 V to 36 V
Nominal Input Voltage: 24 V to 28V
Transient Suppression: Meets requirements of:
– MIL-STD-1275AT (except ignition, cranking and single fault conditions)
– MIL-STD-704D
Output: +5V @ 12A, +3.3V @ 11A, +12V @ 2.5A, -12V @ 2.5A
Total Output Power: 160 W
Efficiency: >75%
CoolingThe E119 does not require forced air-cooling. Heat is conducted through the aluminum walls and radiated/convected to the surroundings by means of the external vertical fins on the sides and top walls of the enclosure. The enclosure can also be mounted to a cold plate, thus
enhancing the thermal path by adding conduction cooling through the bottom base plate in addition to the radiation and natural convection.
IP/NMEAThe E119 is sealed against humidity rain and splash. Enclosure mating surfaces are sealed with hollow silicon rubber seals. Connectors and other accessories are protected a similar manner.

General

ExpansionVME64x compliant
ElectricalSee above for PSU specification
Power Dissipation Capability:

In Radiation/Convection + Conduction cooling mode (standard hard mounting):
More than 50 W at 71 °C ambient free air temperature at sea level, with cold plate temperature of 55 °C, (internal temperature is maximum 85 °C at card edge).

In Radiation/Convection mode (with optional vibration isolation mounting):
More than 40 W at 71°C ambient free air temperature at sea level, (internal temperature is maximum 85 °C at card edge).
Mechanical10.04" x 9.62" x 3.18" (W x D x H)
TemperatureOperating Temperature
• Ser 200 level Enclosure: -40 °C to +71 °C*
• Ser 400 level Enclosure: -55 °C to +71 °C*
Non-operating Temperature
• Ser 200 level Enclosure: -50 °C to +85 °C
• Ser 400 level Enclosure: -62 °C to +100 °C
Humidity5%-95% relative humidity with condensation
WeightLess than 6 lbs. (without boards)
VibrationSine Cycling of 5*/8** g (max) at 5 to 500 Hz
Random 10*/16** Grms at 20 to 2000 Hz
Transportation Loose cargo vibration
* Hard mounted
** Mounted on isolators
ShockSingle half-sine shocks:
40*/65** g peak
3 axes
11 ms duration
* Hard mounted
** Mounted on isolators
EMCDesigned to meet the emanation and susceptibility limits of MIL-STD-461, as per MIL-STD-462 requirements, CE102, CS101, CS114, & RE102.
Warranty1 Year
RoHSCompliant

Ordering Details

BoardRefer to datasheet for ordering part number scheme
AccessoriesN/A