Dell - Internal Use - Confidential
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Acoustic Noise Emission Information
OptiPlex 9020 Micro
Declared Sound Power (LWAd)
The Declared Noise Emission in accordance with ISO 9296 for the OptiPlex 3020 SFF is as follows: (all
values LWAd expressed in bels; 1 bel=10 decibels, re 10-12 Watts)
Declared Sound Power(LWAd)
A-Weighted Sound Pressure Level (dB)
The Declared A-weighted Sound Pressure Level in decibels (re 2x10-5 Pa), at Operator and Bystander
Positions are measured in accordance with ISO 7779 7.6.1, 7.6.2, and C.15.2 and declared in
accordance with ISO 9296 for this product is as follows:
Declared Sound Pressure (LpA)
1 All tests are conducted according to ISO 7779 and declared according to ISO 9296 except CPU
Stressed. This test mode is not specified in ISO 7779, but was measured using the same microphone
distances and measurement techniques defined for the other reported operating modes.