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