Extensive analysis and experience with field test sets has shown that multiple shock absorbers attached to the PXI chassis will protect the custom electronics and PXI
card cage from shock, vibration, and lateral movement.
This bus is available at all module slots but not between the TestFrame
card cages. If the expansion chassis required access to the HA.BUS, then specialized switching cards provided external access for routing the signals to the next chassis.
By aligning the compact power supplies on the side of the
card cage, the chassis can provide 12 double-module, mid-sized slots.
The unit does not have side or back walls around the
card cage area, leaving it open for easy access.
Using a technique developed for our Rixon 4200 modem rack, each channel in the modem
card cage is isolated with its own virtual power transformer.
So, one portion of the front of the
card cage will have a fixed front panel to enclose the part of the
card cage that the plug-in boards don't fill.
The frame grabber is often PCIbus so that it can be used in a standard PC, but it can also be designed for a
card cage system, such as VME.
* Dual 2nd Gen shelf managers in
card cage slot 0 for easy access
Side-to-side cooling is achieved via a plug-in fan tray with dual 170 cfm fans with PWM (pulse width modulation) control on each side of the
card cage. The redundant push/pull configurations of the fans offer higher levels of reliability.
ATR--Conduction Cooled: Elma's low-weight conduction cooled ATRs have a machined
card cage accommodating wedge locks to transfer heat.
Dual fan trays with 4X 150 cfm fans are below the
card cage and 1X fans in additional trays above the
card cage.