SGI Origin 3900 Specifications download pdf (Page 27)

Ergonomic Requirements

007-4603-001 13

Ergonomic Requirements

When you select a physical location, pay attention to ergonomic considerations. The

location of a system often restricts the location of the devices that attach to it, such as

monitors, keyboards, and so on. Decisions that are made during the installation process

can affect workers much later.

In addition to attached devices, consider other issues such as noise, temperature, air

quality, and so on, some of which may be affected by the addition of the new system.

Acoustics

The acoustic measurement that Table 5-1 lists is approximate. Acoustic values depend on

many factors that are outside the control of the manufacturer. Room characteristics such

as carpeting and wall coverings affect the noise levels at an installation. The acoustic

measurement provided in this document is in dBa (decibels absolute) rather than dB

(decibels). This is a measurement of weighted absolute noise power, and it includes

frequency corrections.

If a site exceeds desirable noise levels, try these remedies:

• Reduce the quantity of ﬂat reﬂective surfaces, such as glass, tile, or metal.

• Add sound-absorbing wall coverings, drapes, and ceiling tiles.

• Add sound bafﬂes in critical locations (without blocking airﬂow).

• Modify the ofﬁce space to separate the operators from the hardware.

Local Regulations

Before you install a system, become familiar with any applicable local regulations.

Because these vary dramatically by country and state, it is impossible to provide a

complete list of such regulations. These regulations, however, might involve:

• Power

• Emissions

• Safety issues

• Ergonomic and health issues

• Telecommunications

Planning for the Future

Even if the existing infrastructure can handle the immediate site needs, consider the

future plans. It is much easier to provide enough space, power, air-conditioning capacity,

and other resources in advance than it is to add them later.

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SGI Origin 3900 Specifications Page 27