1½ ATR PCI Chassis


Macrolink’s ML-1500 Series Shark is a convection-cooled ATX 2.1 form factor computer enclosure. This robust chassis is designed for avionics and ground vehicle applications. The structure is capable of withstanding extreme environmental conditions of altitude, temperature, humidity, shock, vibration, EMI, and chemical exposure.

ML-1500 Series ATX Convection Cooled Electronic Equipment Enclosure

  • The Shark is optimized to provide maximum strength with minimum weight. Lightweight aluminum 6061-T6, brazed per MIL-B-7883, minimizes the need for fasteners and provides robust Faraday shielding protection for electronic payload. Removable panels use stainless steel captive hardware and self-locking helicoils for maximum shock and vibration security. Complete EMI/RFI integrity is maintained via conductive interior surfaces with braided gasketing on all moveable panels and front doors.ATX_Front_open
  • Convection cooling is through a filtered, front-panel air inlet, four high-efficiency fans, and honeycomb-shielded vent screens front and rear. Ample room is available for multi-processor motherboards and processor wind-tunnel cooling structures.ATX_3D
  • The integral front panel accommodates MIL style M38999 connectors along with high-density COTS components and is customized to meet each application’s requirements. Internal cables connect the front panel to the motherboard’s back panel I/O connectors, and the expansion slot board connectors.

    Up to six high-performance, removable, SCSI or IDE disks are easily accessible from the front panel, and additional fixed drives can be mounted inside the enclosure.

  • The enclosure is chromate conversion coated per MIL-C-5541 Class 1A for maximum protection against corrosion on all surfaces, then the exterior is epoxy painted to military standards and colors. All materials and finishes are fungus resistant.


Construction & Finish
  • Heavy gauge brazed 6061/T6 aluminum per MIL-B-7883
  • All internal/external surfaces chromate conversion coated per MIL-C-5541 Grade A, Class 3
  • All external surfaces gray powder coat per FED-STD-595B 26081
  • Other color/finishes available
Switches & Indicators
  • Power mains with circuit breaker on front
  • Power OK indicator – Green
  • Fan Fail indicator – Red
  • Optional Elapsed Time indicator (reads to minimum 9,999 hrs.)
  • Heaters On indicator (for thermal management option)
  • Battle Short switch and indicator option
Power Supply
  • 500 – 800 W ATX power supply
  • Heavy duty, high-efficiency supplies
  • Universal AC input; 50/60/400 Hz; .99 PFC
  • ±5 / ±12 / +3.3 VDC outputs
  • 1 to 4 additional VDC output options
External Power Connector
  • MS3470L12-3P on front bulkhead for AC IN
  • Other MS power connector options
  •  IEC 321 or custom connectors
Chassis I/O
  • Custom I/O panels with cutouts, silkscreen, connectors, and/or cable assemblies available
Peripheral Support
  • Shock/vibration isolated peripheral housing
  • 1 to 12 fixed or removable SATA spinning or SSD half-height drives
  • 1 to 4 shock-isolated, removable High-Cycle (HC)  SATA spinning or SSD disk drives
  • Single, split, or multiple peripheral busses
  • Differential/single-ended SCSI converter option
  • Peripherals rapidly accessible via hinged, front panel door
EMI/RFI Integrity
  • Braided gasket on all moveable surfaces and hinge panels
  • Conductive gasket on all mating joints
  • Honeycomb vent screens front and rear
  • EMI/EMC shielding meets JASA standards
  • 10.625″ H  x 15.375” W x 19.625” L (excluding front handles)
  • 49 lbs. fully loaded
  • Evacuative, filtered, forced-air with rear discharge
  • High-pressure/high-altitude fan option
  • Washable/replaceable particulate filters
Ambient Temperature
  • Operating: 0ºC to 50ºC
  • Operating: -20ºC to 50ºC with thermal management option
  • Storage: -40ºC to +75°C
  • 0%-95% non-condensing
  • >40,000 P.O.H.
  • <.5 hours for any Field Replaceable Unit (FRU)
Human Factor Engineering
  • The enclosure assembly design adheres to good Human Factors Engineering that reflects the detailed Human Engineering Principles and Criteria contained in MIL-STD-1472F Design Criteria Standard. The enclosure assembly is designed and manufactured for ease of assembly and disassembly.
Endurance Vibration
Frequency, Hz Acceleration PSD G2/Hz
10 .04
40 .04
100 .005
1000 .005
2000 .0001
Overall RMS acceleration 2.97 G

The fully populated enclosure shall not be damaged due to these endurance vibration levels (1.0 hours per axis exposure, all axes.)

Environmental Qualifications Designed to meet:

  • MIL-STD-167
  • MIL-STD-810E
  • MIL-STD-704
  • MIL-STD-461D
Part Number 530319-100