V12 – 12U Rackmount – 21 Slot System

Designed for demanding top-end applications, the Verotec 12U System supports the full 21 slots available in the 19” rackmount capability. At the heart of the chassis is the IEEE 1101.10/11 compliant Verotec KM6-RF cardframe, recessed inside the chassis, behind a hinged door with an acrylic window. The system can be specified with a wide range of backplane and power supply options. Effective cooling is provided by a removable fan tray beneath the cardframe, drawing air through a vented panel and also a bank of fans on a hinged panel at the rear of the chassis. This arrangement draws air from the bottom front and exhausts to the top rear – minimising any chance of drawing warmed air back into the system. Power supplies are typically embedded, mounted on a drop-down rear panel for easy access or alternatively PICMG 2.11 front pluggable Eurocard format configurations are available. Standard features include voltage and fan LED’s, system reset and an on/off switch all located on the front panel, as well as an ESD point. A separate 3U rear panel allows access for cable management or to house additional components. With the total 84HP available, this system can take the full range of VME backplanes – from 5 to 21 slots and of course Verotec also offers a wide range of other bus architectures and slot options.

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Thermal Management

The system cooling is provided by a combination of three 120mm fans arranged on a removable fan tray positioned directly below the cardframe, drawing air through a filtered and vented 2U panel at the bottom front of the chassis. A further three similar fans are mounted on a hinged 3U panel at the top of the rear side. This arrangement allows the system to be used in applications with other chassis placed directly above and below the system. When powered by an embedded PSU attached to the rear panel, the supply is directly cooled by its own internal fan, venting from side-to-side. All fans are DC powered from the autoranging power supplies and are capable of providing sufficient airflow to dissipate the large amount of heat generated by the latest CPU boards.

Power Supply

The user has a wide choice of supplies; if the rack is not required to house the full 21 slots capability of boards, front mounted CPCI pluggable supplies may be considered. Two of these 6U supplies, rated at 500W each, can be used in a power sharing hot-swap mode for high availability applications. Where the full backplane width capability is required, there is again a choice of rear mounted power supplies; available as either 700 or 1000W output units, mounted on a 5U hinged rear panel, offering easy access to the PSU and to the rear of the backplane.


Proven practices have been adopted in the design of the chassis. The cards are housed in Verotec’s IEEE 1101.10/11 compliant KM6-RF conductive subrack, and chassis vent patterns have been designed to allow maximum airflow while still maintaining shielding effectiveness. An earth bonding point is provided on the front panel for a wrist strap connection to ensure ESD protection when inserting or extracting boards.


Verotec has a comprehensive range of backplanes available, covering a wide range of slot sizes and bus architectures. The chassis shown is fitted with a 21 slot VME64x backplane; however other widths of VME64x or CPCI backplanes may be selected. Verotec offer a comprehensive range of architectures covering VME, VME64x, CompactPCI, PXI, VXS, VXI and VPX – please contact your sales office if you have a special requirement.


Width : 482.22mm / 19”
Depth : 552.9mm / 21.77”
Height : 532.55mm / 20.97” (12U)

Material & Finish
Chassis : Aluminium alloy (Iridite NCP)
KM6-RF Subrack : Aluminium alloy (Iridite NCP)
Front & rear infill : Aluminium alloy (Anodised)

Operating Temperature 00C to +500C
Storage Temperature -200C to +800C

Power Supply (Typical)

Input/Output Pluggable 500W (Each) Embedded 700W Embedded 1000W
AC Input 90 – 264 V @ 47-63 Hz 90 – 264 V @ 47-63 Hz 90 – 264 V @ 50-60 Hz
Output +5V @ 65A +5V @ 60A +5V @ 120A
+3.3V @ 80A +3.3V @ 60A +3.3V @ 60A
+12V @ 12A +12V @ 10A +12V @ 10A
-12V @ 1.5A -12V @ 8A -12V @ 8A

Ordering Information

Order Code : 141-3811 _ _ _ 5th Digit 6th Digit 7th Digit
Power – Output
Single 500W pluggable 6
Double 500W pluggable 7
Single 700W embedded 8
Single 1000W embedded 9
VME64x Extensions (With P0) 2
Standard CompactPCI (PICMG 2.0 R.3) 5
Number of Slots
8 Slots (Max slot count for CPCI Backplane) 4
10 Slots 5
14 Slots 7
17 Slots 8
21 Slots 9

Extender Boards

Available with or without the centre P0 connectors, these 6U x 330mm multilayer extenders are for use in VME64x applications and are designed to bring cards out of a system for fault diagnostic or development work. Jumper links are provided on all signal lines for interrogation and an additional connector is fitted for connection to a logic analyser or termination module. Available separately is a metal frame to support the card and provide extraction functionality by two levers. CompactPCI versions are also available. Please consult the factory for ordering information.


A range of accessories are available including air baffle cards, disk drive mounting adaptors, filler panels and more – please contact sales office for further information.

Customizing Options

The scalable design enables options based on other 3U and 6U backplanes across all bus structures such as VMEbus, VME64x and cPCI very easily. Where the system is to be deployed away from users, a system monitor can be supplied to allow remote monitoring and control. With a wide range of options available, it would be impossible to list every combination. Should your application require a different specification such as backplane, cooling or power supply variants, please contact us to discuss.