All Elma Bustronic backplanes are
designed to maximize performance, minimize noise, and to give the
customer the most reliable, cost effective product possible. To
achieve this we used 8-layer construction, stripline design, decoupling
capacitors at every slot, inboard terminators, heavy power and
ground planes, transient analysis simulation programs, and years
of experience designing, building, and using backplanes. Although
the design could have been done with four layers, we chose to use
eight layers so that we could have three layers of ground, two
layers of VCC, and three separate signal layers. Three 2 oz. copper
ground layers are used to fully shield the backplane to minimize
RFI/EMI emission/susceptibility, to minimize crosstalk, and to
maximize power distribution.
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The Elma Bustronic J1+J2 VME Monolithic backplanes
are 6U height and available in 2-21 slots.
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The J1, J2, and J3 (J0) VME backplanes come in 3U
heights and various slot sizes. The J2 versions can also have the
A+C rows bussed.
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The J2 and J3 backplanes are ideal for prototyping.
With all J2 pins undefined (except the B row) the J2 backplane
allows flexibilty for testing and designing your system. The J3
development backplane has defined A+C rows as power, with B row
remaining user-defined.
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The Overlays come in three forms -- VSB, J2-rows
A+C, and J3-row B. The J2 overlay module is used to upgrade an
existing VMEbus J2 backplane to include the pinouts needed to implement
signal bussing of the A and C rows of the connector. Modules can
be plugged into the pin side of the host backplane. All row A and
C pins are bussed.
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VITA 31.1 defines a pinout and interconnection methodology
for implementing a 10/100/1000BASE-T Ethernet switched network
on a VME64x backplane. The PICMG 2.16 Packet Switched backplane
specification adds a switched network based on Gigabit Ethernet
to cPCI backplanes.
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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.
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Elma Bustronic has four versions of its VXS backplanes
- Single Star, Dual Star, Mesh, and Processor Mesh. All Elma Bustronic
VXS backplanes are compliant to the VITA 41.0 Rev. 1.10 core specification.
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Elma Bustronic VME Chassis are compliant to Eurocard
IEEE 1101.1 specifications. They are available in 6 different types,
each with countless options and configurations available.
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