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Physical Parameters
The AlphaPC 164UX motherboard is specified to run within the environment listed
in Table 5–2.
Table 5–2 AlphaPC 164UX Motherboard Environmental Requirements
Parameter
Operating Temperature
Storage Temperature
Relative Humidity
Rate of (dry bulb) temperature
change
5.3 Physical Parameters
This section has four parts: the first illustrates the board dimensions for AlphaPC
164UX. the second shows the distances between the board mounting holes and the
edges of the board; the third shows the vertical clearances required by the board
components at all points within the border of the AlphaPC 164UX.
All holes and board measurements are compliant with the ATX 2.01 specification.
The AlphaPC 164UX exceeds the ATX height indications in two places. The first is
(the 2.5' region).The second is at the location of the SCSI connectors(the 1.0' region
to the left of the second PCI slots).
the fourth shows the ATX I/O shield dimensions.
5.3.1 Board Dimensions
The AlphaPC 164UX motherboard is an ATX-size printed wiring board (PWB) with
the following dimensions:
•
Length: 30.48 cm (12.0 in ±0.0005 in)
•
Width: 24.38 cm (9.6 in ±0.0005 in)
•
Height: 6.86 cm (2.7 in)
The board can be used in certain desktop and deskside systems that have adequate
clearance for the 21164 heat sink and its cooling fan. All ISA and PCI expansion
slots are usable in standard desktop or deskside enclosures.
Power and Environmental Requirements
5–2
Specification
10°C to 40°C (50°F to 104°F)
-55°C to 125°C ( -67°F to 257°F)
10% to 90% with maximum wet bulb temperature 28°C
(82°F) and a minimum dew point 2°C (36°F)
±
11°C/hour
2°C/hour (20°F/hour
±
4°F/hour)
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