IBM Systems - Acoustical Noise Declaration for System z9 109

Declared Noise Emissions in Accordance with ISO 9296
Product Description Declared A-Weighted Sound Power Level, LWAd(B) Declared A-Weighted Sound Pressure Level, LpAm(dB)
Operating Idling Operating Idling
Typical configuration: Two processor books and three I/O cages. Nominal operating conditions and front and rear doors closed. 7.5 7.5 55 55