VPX presents many design challenges and experienced teams
like Elma Bustronic’s are best suited to take them
on. With 480 pins per slot with up to 186 differential pairs,
there is an incredible amount of I/O to route through the
backplane. Additionally, VPX uses high-speed differential
serial signals that can switch well in excess of 3.0 GHz.
The VITA 46 spec acknowledges that the backplane may require
up to 16 routing layers, and a huge 36- layer overall PCB
stackup. The result could be long via stubs which can degrade
the signal. To alleviate this, Elma Bustronic performs simulations
to optimize the signal quality of the design and minimize
the negative stub effects. One key method is to take the
performance requirements, which typically would be 3.125
GBps or 6.250 GBps and route the backplane to minimize the
layer count, but follow proper design rules. Design rules
typically specify how close signals should be to another
or to components, avoiding 90 degree bends of the signal,
and so on. Reducing the layer count can shorten the stubs,
thus reducing the stub effect. In most cases, a high-grade
laminate will need to be used even in smaller (fewer slot)
backplanes. For example, the five-slot VPX backplane uses
an FR-408 low-dielectric material to enhance performance.
OpenVPX is an initiative to incorporate system interoperability
profiles across VPX backplanes and modules. Bustronic offers
OpenVPX (VITA 65 compliant) versions of our 3U, 6U, and
6U Hybrid VPX Backplanes. Click below or contact Bustronic
for more information on Open VPX and VITA 65.
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3U VPX Backplane
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VPX uses the high-speed multi-gig connector in a mesh topology,
vastly increasing the potential bandwidth of the system. While
maintaining backward compatibility with legacy VME technology
via preservation of the VMEbus 3U mechanical form factor and
through-mapping of the current VMEbus signals to the VITA
46 connectors. VITA 65 compliant (OpenVPX) versions are available,
including profiles of BKP3-DIS06-15.2.14-n.
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6U VPX Backplane
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VPX uses the high-speed multi-gig connector in a mesh topology,
vastly increasing the potential bandwidth of the system. While
maintaining backward compatibility with legacy VME technology
via preservation of the VMEbus 6U mechanical form factor and
through-mapping of the current VMEbus signals to the VITA
46 connectors. VITA 65 compliant (OpenVPX) versions are available,
including profiles of BKP6-DIS05-11.2.16-n.
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6U VPX Hybrid Backplane
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VPX is a high-performance architecture using switched
serial fabrics, typically in a mesh topology that offers tremendous
bandwidth potential. While different from the traditional
VME64 P0/P1/P2 backplane architecture, VPX can be compatible
with legacy systems in “hybrid” backplanes. The
VMEbus signals can go across the MultiGig high-speed connectors
to the legacy VME/64x slots. VME64x uses the VME parallel
bus across a 160-pin DIN connector. VITA 65 compliant (OpenVPX) versions are available,
including profiles of BKP6-HYB07-11.2.XX-n.
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6U
OpenVPX Development Backplane
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VPX is a high-performance architecture using switched serial fabrics, typically in a mesh topology that offers tremendous bandwidth potential. While different from the traditional VME64 P0/P1/P2 backplane architecture, VPX can be compatible with legacy systems in “hybrid” backplanes. The VMEbus signals can go across the MultiGig high-speed connectors to the legacy VME/64x slots. VITA 65 compliant (OpenVPX) versions are available,
including profiles of BKP6-HYB17-11.2.11-n.
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VPX Test Backplane
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The Elma Bustronic 2-slot test backplane is a unique tool that lets VPX card developers and system integrators test VPX boards. The device allows the user to power up test their J1 fabric connections as they would be interconnected in the target application. Signals can be passed from one slot to the next via high speed interconnecting cables, via signals introduced through the J1 fabric connector, or accessed on the J1 fabric connector using the test backplane’s SMA and SATA cable headers.
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VPX Power and Ground Backplanes
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The VPX power and ground development backplane is a simple and cost-effective development tool. All of the pins are user defined. Power for 3.3V, 5V and 12V are included. The 7U version is standard and a 3U version is available upon request. The rear connectors are all fully loaded from RJ0-RJ6.
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Chassis
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The VPX Tower offers a carrying handle for easy portability making it ideal for prototyping, demonstrations, and for mobile applications. The unit also features advanced EMC shielding, scratch-resistant vinyl clad aluminum covers, and power components.
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VPX Accessories
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Elma Bustronic offers VPX System Accessories including a load board, extender board, SerDes test module, and RTMs.
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