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Specifications
Cooling Requirements
Motorola VMEmodules are specified, designed, and tested to operate reliably with an incoming air temperature range from 0 degrees C to 55 degrees C (32 degrees F to 131 degrees F) with forced air cooling. Temperature qualification is performed in a standard Motorola VMEsystem 1000 chassis.
While the exact amount of airflow required for cooling depends on the ambient air temperature and the type, number, and location of boards and other heat sources, adequate cooling can usually be achieved with 5 CFM flowing over the module. Less air flow is required to cool the module in environments having lower maximum ambients. Under more favorable thermal conditions it may be possible to operate the module reliably at higher than 55 degrees C with increased air flow. It is important to note that there are several factors, in addition to the rated CFM of the air mover, which determine the actual volume of air flowing over a module.
FCC Compliance
These MVME712 family VMEmodules were tested in an
1.Shielded cables on all external I/O ports.
2.Cable shields connected to earth ground via metal shell connectors bonded to a conductive module front panel.
3.Conductive chassis rails connected to earth ground. This provides the path for connecting shields to earth ground.
4.Front panel screws properly tightened.
For minimum RF emissions, it is essential that the conditions above be implemented; failure to do so could compromise the FCC compliance of the equipment containing the modules.
MVME712A/D3 |
1 |