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 CMC-e PC with Core 2 Duo, or i7 (Dual or Quad Core) Military Computer

Extended Temperature range, Harsh Environment for

Transport Aircraft & Helicopters Naval and land Applications


CMC-e PC, is a rugged Low power Core 2 Duo, or i7 based PC computer specially designed for use in Airborne military environment. The computer includes a passive back-plane for up to three 3/4 size PCI cards, one PCI-e x 16, one PCI-e x 4 and one PCI-e x 1. It supports Windows® XP,  Windows® 7, Linux and INtime operating systems.  The computer has various display options including video according with STANAG 3350 A, B, C, RS-170, RS-343,

Extended Temperatures from -40°C to + 71°C

CMC-e with removable hard disk

 CMC-e  internal view

  CMC-e Mount 


  19" Rack Mounted CMC-e

Dimensions & Weight  

230x245x370 [mm] (WxHxL)  with base and mounts 

Weight approx.12Kg with mount and shock isolators  

  CMC-e Brochure  EQT Report        RFI/EMI Report 



Major Assemblies

- Power Supply Assy.

- Com Express CPU module Dual or Quad Core i7

-  NVIDIA  or Radeon Display Controller on PCI-e x16

- Passive back plane

- Custom made Connector's Panel.

- Internal Flash Disk

- Removable disk



Power Supply 

The Power Supply is a Plug-In LRU with the

following characteristics

Power In:  18-32VDC per MIL 1275B, and

                MIL-STD-704A approx. 3Amp.


Hold-Up time minimum 100msec.



Typical Configuration


The following represents a typical configuration

of the CMC-e CPU. 

- CPU - Intel® Dual Core™ i7-620LE, 2.00 GHz

- CACHE - 2 Cache:

  L1 cache 24KB data/32 KB instruction
  L2 cache up to 4 MBytes, 8-way

- Internal Disk: SATA, 8GB Flash

- Removable Disk
   SATA, 500GB Hard Disk or up to 256GB Flash.

- Ethernet - 4 x 10/100/1000Base-T.

- USB - 6 x USB 2.0

- Up to 8 x RS-232/RS-422

- Programmable Hardware Watch dog

- Voice In/Out

- Aptio BIOS © 2009 American Megatrends, Inc.

- MIL-STD-1553 - Dual Channels
- ARINC-429


Graphic Options


Option A

Use of internal integrated Graphics: Intel® Graphics Media Accelerator 4500(Intel® GMA 4500) 


Option B

Use of NVIDIA or ATI Radeon PCI-e x16  Board ,


Option C

STANAG 3350 A, B, C, RS-170, RS-343,
External Sync,

Video In - RS-170


Expansion Slots

- Up to 3 3/4f Size PCI boards

-  PCI-e x16, PCI-e x4, PCI-e x1

External Connectors

External Connectors are customized per request

CMC-e Construction 

The CMC-e is designed and constructed in accordance with the general  requirements of MIL-STD-454. 



Moisture & Fungus Resistance

CMC-e assemblies are moisture resistant and are not nutrients for fungi. The PC Cards are treated with Conformal coating for protection. The coating conforms to MIL-I-46058C.  

Thermal Design  

The cooling of the components on the CMC-e cards is accomplished by conduction. The cooling of the CMC-e Power Supply and the Pentium chip are accomplished by by conduction through the aluminum  enclosure of the unit which is built as  an heat-sink.


External Connectors  

External connectors are used for interfacing  with the subassemblies or equipment and are in accordance with requirement of MIL-STD-454. Connector mating bodies are keyed, and keyed locations are varied  to prevent improper installation. 

External Finishes  

The computer external surfaces are chemically treated  prior to painting. All residues and contaminants are removed prior to applying one coat of primer. The finish   is semi-gloss per FED-STD-595.  


Processes and Treatment  

Processes and treatments (welding, soldering, brazing   and corrosion (resistance protection) of the enclosure is in accordance with MIL-STD-454. 


Identification and Marking

The marking and labels of the equipment meet the requirements of MIL-M-13231. 

Environmental Conditions




The CMC-e  will not be damaged or affected by the effects of ambient air temperature as follows:


The CMC-e  shall meet performance requirements specified herein after exposure to temperatures:

With Core 2 Duo CPU, operation from -40°C to + 71°C.
With Dual Core i7, operation from  -40°C to + 71°C. 
With Quad Core i7, operation from  -20°C to + 60°C.  

(Storage and transportation) -40° to 85°C.


Sand and Dust

The CMC-e  shall operate as specified herein while and after being subjected to sand and dust as encountered in dry arid arias. The CMC-e shall meet the requirements specified in MIL-STD-810F.  


Salt Fog

The CMC-e  is resistant to the corrosive effects of salt fog  environment. The  CMC-e meets the requirements specified in MIL-STD-810E Method 509.3 Procedure I.  The base metal shall  not be visible through the finish or coating, nor shall  be any evidence of blistering, softening, separation from the base metal, corrosion products, or other coating failure.


Relative humidity

Up to 95% relative humidity, non-condensing, per


Salt Fog

5% solution per MIL-STD-810F method 509.3



MIL-STD-810F Method 514.5 Procedure I



MIL-STD-810F for flight equipment 40g,11ms saw tooth



- With standard hard disks up to 15,000ft
   (or the equivalent atmospheric pressure),

   operating and non-operating

- With Flash disks up to 40,000ft (or the

   equivalent atmospheric pressure), operating

   and non-operating

Electromagnetic Interference


The CMC-e as specified with its internal boards,  and the computer’s components, disks and power supplies complies the requirements of MIL-STD-461F as follows:



Conducted emissions, power leads, 10 kHz to 10 MHz.



Radiated emissions, electric field,  100 kHz to 1.0 GHz.



Radiated susceptibility, electric field, 2 MHz to 2.0 GHz.



Conducted susceptibility, DC cable injection, 10 kHz to 400MHz.






The components of the CMC-e  are physically and functionally interchangeable in accordance with   MIL-STD-454. Parts or  components of the same part number procured to this specification are physically and functionally interchangeable  without selection, adjustment or fit.


Maintainability and Modularization

The CMC-e  is designed such that it is completely maintainable by replacement of assemblies. 

Maximum use is made of plug  in module assemblies.



The CMC-e -PC has an MTBF of  10,000 hours at 25°C . Mean Time To Repair (MTTR) does not exceed 30 minutes.  The MTTR includes the time required to detect and isolate the failure,  replace the failed unit, checkout the repair and return the system to full operational status.  


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