Physical And Environmental Requirements; Physical And Environmental Specifications - DEC Digital Alpha VME 4/224 User Manual

1.3 Physical and Environmental Requirements

The Digital Alpha VME 4 module requires a VME chassis with sufficient cooling.
You must have at least 200 linear feet/minute (lfm) of airflow at an ambient
temperature of not more than 40°C (104°F) across the processor heatsink.
Table 1–2 shows the physical and environmental specifications for the Digital
Alpha VME 4 module. Table 1–3 shows the power supply current and power
dissipation for the Digital Alpha VME 4 module. Stresses beyond those specified
may cause permanent damage to the module.
Table 1–2 Physical and Environmental Specifications
Characteristic
Industry standard
Operating temperature
Storage temperature
Temperature change
Relative humidity
Airflow
Vibration:
1–4 Product Overview
Specification
VME 6U module
0°C to 40°C (32°F to 104°F)
–40°C to 66°C (–40°F to 151°F)
20°C/hour (36°F/hour)
5% to 95% (noncondensing)
200 lfm minimum at 40°C ambient inlet air temperature,
over the large square processor heatsink and cache
Operating in a suitable enclosure
0.5 g Pk 22.1–260 Hz
0.25 g Pk 200–500 Hz