It also accommodates the power subsystem, either single or dual for system redundancy. Figure 1-2 shows a cutaway view of the chassis underneath the enclosure. Venting holes on the front door provide air flow to cool system components when the system fan units are operational. A removable air filter is held in place by a cross-member and two screws on the inside of the front door. Four screw-in rubber foot pads for bench use are provided as an option.
All cable access is through the back of the system enclosure.
Figure 1-4 shows the back of the system enclosure. Two door frame latches at the top and two studs at the bottom hold the door in place. The front door must remain on during system operation for NEBS EMI compliance. The inside of the door contains an air filter made of UL 94 HF-1 foam. The removable air filter should be regularly vacuumed to remove any accumulated dust.