SIXHEX Military Backplane & Power Supply

Sixhex All SixHex chassis series incorporate a full military Backplane and Power Supply Unit (PSU) that are custom made to match the enclosure mechanics.

Sixhex The PSU accepts all military standard DC & AC input voltages, both single and 3-phase, to facilitate worldwide operation as per MIL-STD-704 & MIL-STD-1275. The highest performance PSU is capable of developing over 1.6 kW and generates upwards of 160 amps @ +5V on the Backplane, an unmatched first in the industry.

Sixhex True Military monolithic VPX, VME & cPCI Backplanes incorporate all standard bus functionalities that are additionally complemented by active auxiliary electronics. Standard Backplanes are available in 5, 7 & 12 slot versions. Several custom Dual Redundant and Hybrid Backplanes are also available, or can be designed upon customer request.

Sixhex The SIXHEX PSU incorporates isolated DC/DC converters & oversized hold-up capacitors to ensure proper operation during short power line failures. Outputs are protected against short-circuit, over voltages, thermal-shutdown etc.

Sixhex All PSU models supply +5VDC, +3.3VDC & ±12VDC standard outputs to the Backplane payload electronics.

Sixhex The SixHex PSUs are fitted with Power Fail Monitor, MIL-STD-461E power filter, remote voltage sensing, output voltage trim-up, time-delayed protection fuses, rear fan EMI-filter & fuse and DC/DC converter remote shutdown.

Sixhex DC/DC Converters installed on the chassis PSU may be disabled through an optocoupled control signal. This allows a Temperature Supervisory Unit (TSU) to monitor and shutdown all PSU power devices in case of over-temperature conditions in the card cage, or other emergency situations.

 

Sixhex All Chassis fitted with a DC PSU are equipped with a VICOR military Filter and Attenuator Module (FIAM). This front-end device is fitted prior to the DC/DC converters to provide EMI filtering, inrush current limiting and transient protection. 200VAC 3-Phase PSU versions additionally incorporate AC/DC rectifier stage prior to the VICOR FIAM front-end module

Sixhex Single-phase AC PSUs are fitted with two VICOR military Filter and Autoranging Rectifier Modules (FARM). This integrated device provides EMI filtering, autoranging line rectification and inrush current limiting. Both filters combined meet the requirements of MIL-STD-461 E category A1b specifications for Electromagnetic Compatibility.

Sixhex Front-end FIAM modules are protected against DC reverse polarity. An optional reverse polarity diode may be fitted in series with power connector input pin IN (+).

Sixhex Class 1 military power connectors on the PSU offer shock & vibration reliability during interconnectivity between chassis internal modules high DC current rates with low voltage drops and minimum contact heating.

Previsions are available for an optional Redundant Plug-in Power Supply Unit that provides dual redundancy for highly critical applications.

PSU power lines are installed within shielded corridors that run lengthwise through the chassis side panels. This ensures that the PSU and Fan power cables are EMI/RFI shielded with regard to chassis I/O wiring harnesses. One additional shielded corridor remains free for system integrators who wish to shield certain noise sensitive I/O signals from cables linking front panel connectors to the Backplane.

High-speed Rotron PROPIMAX 3 exhaust fans have independent circuitry with respect to the PSU input power voltage. Fan voltage can be selected according to the required airflow capacity, regardless of the chassis PSU main power voltage.

The PSU is attached to the chassis rear panel to provide both conduction and convection cooling. Forced air dissipates heat generated by the PSU as air passes over the rear panel external fins. Heat is also dissipated through the rear panel via thermal conduction to the chassis frame.
SixHex Power Supply Options
 

CM Military Backplane Common Features

Sixhex CM ATR SIXHEX chassis integrated Backplanes are low noise, full military VPX, VMEbus or cPCI compatible. In addition to providing fully standard bus slot & signal daisy-chain functionalities they have been designed to improve card-cage mechanical performance and to offer additional electronics and options.

Sixhex Backplanes incorporate extra DC electrolytic capacitors for all PSU output voltages that complement high voltage input filtering.

CM Backplanes support up to two 100W power sockets for micro-size DC/DC military converters for user defined output voltages, available for increasing the +5VDC or +3.3VDC, or generating additional isolated positive, negative or bipolar DC voltages.

All CM Backplanes incorporate specific TTL logic circuitry for driving up to 5 front panel LED indicators. Units fitted with a Temperature Supervisory Unit will also drive an additional panel LED TEMP (over/under temperature indicator).

Reset Start Circuitry has been integrated via a dedicated chip that generates 200ms low pulse after power-up.

Backplanes are supplied with military conformal coating. Printed circuits boards are partially coated per MIL-I-4658C. This is carried out only in areas in which coating the product does not affect VPX, VME, cPCI or I/O connectors.

Class 1 military power input connectors on the Backplane offer shock & vibration reliability during interconnectivity between chassis internal modules and allow high DC current rates with low voltage drops and minimum contact heating.

Backplane PCB Power monitoring LEDs. Four monitor SMD green LEDs indicate DC voltage on the +5VDC, +12VDC, -12VDC and +3.3VDC Backplane power lines. Additionally, a SMD red monitor LED will light when the PSU is driven to stand-by mode by the TSU.

All CM Backplanes are supported by 6 PCB screws distributed in both front and rear locations and two channeled slots machined lengthwise to the side panels. This minimizes PCB flexing during insertion, ejection, shock and vibration events.

VPX Backplanes, CM-BP-25/35/45/VPX conforms to VITA 46.0/.1/.10/.3/.4/.7. providing 0.8" Pitch slots.

J1 incorporates high-speed switched serial fabrics with performance up to 10 Gbps, interconnects Rapid I/O, PCI-Express & 10 Gigabit Ethernet.

Full mesh topology supported for both 3U and 6U eurocard formats.

CM VPX Backplanes are 16-layer controlled signal impedance designed with two dedicated ground shielding layers. Connectors J3 thru J6 are free for customer I/O.

CM VPX Backplanes support MultiGig mesh Switched fabric connectors that provide significantly greater bandwidth capability with higher throughput and performance. Systems supported include, digital signal processing applications, FPGA and mass storage interconnects, etc.

VPX-VME64x Hybrid Backplanes feature mesh-fabric slots that support both VITA46 (VPX) & legacy VME64x slots. Hybrid Backplanes support custom cross combinations of split VPX-VME64x compatibility for both standard and custom ranges.

All Backplane slots support Military IEEE-1101.2 wedge-lock mechanics for 6U VPX conduction-cooled modules.

VPX Backplanes integrate a Temperature Supervisory Unit (TSU) as standard.

VME64x Backplanes permit intermixing of conduction-cooled IEEE-1101.2 modules or air-cooled IEC-297/IEEE.1101.1 modules, allowing all CM Computer chassis the combination of any standard VME Eurocard form factor. This slot-by-slot customer configured card cage is completely backward compatible with all previous CM chassis series.

The last slot of our Backplanes allows for bus functionality, but also contains power and control provisions to accept a eurocard-size metallically caged Redundant PSU. This single slot RPSU may have the same capacity as the main PSU and both operate on a load-sharing basis to minimize component stress.

CM VMEbus Backplanes are designed with 12 layers and 2 dedicated ground shielding layers. MIL-C-55302 Class VME64x connectors and MIL-STD-883 TTL components are fitted as standard to this range of Backplanes.

Optional Slot coding keys on Backplane J0 connectors protect against card insertion errors. J0 pin & J0 parts have polarizing keys so that any given board fits only in its connector-coded slot. (Ordering ref: VME64xK).

Bus Grant and IACK* Daisy-Chain jumpers are installed in compliance with VMEbus specifications.

All Backplane slots are backward compatible with standard VME32 boards having 3-row DIN connectors.

CM VME Backplanes incorporate specific TTL logic circuitry for driving up to 5 front panel LED indicators, ON, SYSF, ACF & VME. Units fitted with a TSU may also drive a panel LED TEMP indicator.

All Backplane J2 & J0 connectors incorporate long pins so that all user free signals are available without restriction for system I/O wiring.

CM VME Backplanes allow straight forward I/O prototyping and hand-wire wrapping.

Compact PCI Backplanes are designed by CM according to IEC 1076 / PCI 1101.10/IEC 48D/118/CD standards. Supported specifications include PICMG 2.0 R3.0 CompactPCI, Hot Swap PICMG 2.10 R2.0, System Management Bus PICMG 2.9 and Keying PICMG 2.10 R1.0.

CM cPCI Backplanes are manufactured with 12 layers and 2 dedicated ground shielding layers.

All cPCI Monolithic Backplane slots are fitted with 7 row standard 2 mm P1/P2/P3/P4/P5 metric connectors.

Military wedge-lock ANSI-VITA 30.1 conduction-cooled cPCI modules may be accommodated slot-by-slot or intermixed with IEC-61076-4-101 commercial and industrial range fiberglass air cooled modules.

CM cPCI Backplane can be factory fitted for +5VDC or +3.3VDC V(I/O) allowing 33Mhz or 66 MHz PCI clock distribution.

PCI Interrupt Binding provides Backplane assignments from System Slot 1. Interrupt signals INTA#, INTB#, INTC#, INTD# are assigned to logical board Slot 2, Slot 3, Slot 4, Slot 5, Slot 6 & Slot 7.

cPCI Backplanes incorporate long pin P3/P4/P5 connectors, allowing the user to connect or hand-wire all system I/O lines.

All cPCI 6U slots are compatible with standard 3U cPCI modules having P1/P2 metric row connectors.

The cPCI standard chassis Backplane incorporates specific TTL logic circuitry for driving up to 5 front panel LED indicators, ON, SERR, PF & BDT. Units fitted with a TSU may also drive a panel LED TEMP indicator.

All cPCI Backplanes incorporate a coin-type standby lithium battery. The 3VDC @ 7 mA/h battery is rechargeable from the standard chassis power supply.
Temperature Supervisory Unit (TSU)

The TSU regulates chassis functions within all environments to prevent chassis PSU overheating and aid in cold startups. Boundaries can be easily established by the user to regulate and optimize the internal enclosure temperature. The status of the TSU is monitored via the panel LED TEMP indicator that displays status in real time.

The TSU protects and aids in the longevity of our units by providing additional control of card-cage heaters and fan speed during conditions of under and over trip point temperatures.

Delayed shut-down function is intended to advise the CPU when power failure is imminent, allowing hard drives, relays & critical data to be shut down in an orderly manner.

CM-ATR/SixHex TSU individual functions are optionally enabled or disabled by means of jumpers.

Remote control operation of the TSU allows the user to set the system to stand-by operation or disable the TSU. This can be utilized in situations where the ATR system is only required for a few hours but remains available on demand. Typically, applications such as in battleships & submarines will require this feature. Note that stand-by power consumption is approximately 40 Watts.

 

 

Disabling the TSU functionality during emergency circumstances can be carried out via remote control "battle-switch" in order to remove under/over temperature protection limits. During battle situations it is crucial that the ATR system will remain available despite the risk of system over-stress.
 
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