MODEL 4104

Model 4104 is a chameleon among rackmount chassis in that it can be configured with an active motherboard or passive backplane platform. Further, the 4104 has been tested and passed MIL-STD-810F Shock and  Vibration, and MIL-STD-461E EMC. The hallmarks of the 41xx series, recognized by the U.S. Dept. of Defense, are its torsional strength and resilience to shock and vibration energy. As with its taller sibling, Model 4107 (used by the U.S. Navy on the OASIS LSRS Radar System installed aboard the P-3 Orion), the 4104 was selected by the DOD for service on a critical program. The U.S. Air Force chose the 4104 as its preferred chassis  to  house  a  redundant  computer  that  controls  the  C-130’s refueling system.

The 4104’s superior torsional strength is a credit to NOVA’s proprietary  extrusions from which the outer chassis is made. The internal chassis, made  from  aluminum  5052-H32  and  mechanically  suspended  using multi-axis mounts that attenuate shock and vibration energy, holds the selected hardware platform, drives, and power supply.

High-CFM fans arranged in push-pull LRU trays provide aggressive airflow across system boards and drives at all times, and whose speed can be monitored  and  controlled  by  NOVA’s  System  Environmental  Monitor (SEM). Air filters located behind EMC compliant mesh inserts are easily accessible and quick to service or replace. Model 4104 is configurable to accommodate a variety of passive backplane types or motherboards; rear panel MIL circular connectors may replace COTS connectors.