Acoustic Noise Declaration for DEC 3000 Model 600/600S/700 AXP

This document is an Acoustic Noise Declaration issued by Digital in July 1994 for their DEC 3000 Model 600/600S/700 AXP computers.

It provides declared acoustic noise values measured according to ISO 9296 and ISO 7779 standards. The noise levels are presented in two metrics:

• Sound Power Level (LWAd, B)
• Sound Pressure Level (LpAm, dBA) at the operator's position.

Values are listed for various system configurations (e.g., diskless, with specific storage units like RZ26L or TZK10) under both "Idle" and "Operating" conditions. For instance, sound power levels range from 4.7 B to 6.1 B, and sound pressure levels from 35 dBA to 52 dBA, depending on the configuration and operational state.

The document also notes that current values for specific configurations should be obtained from Digital representatives and clarifies that 1 bel (B) equals 10 dBA.