Manx SA7x Guía de instalación descargar pdf (Pagina 26)

1.3 Acoustic Noise Values

Product: SF300 (H9643 with 6xSF72, each with 4xRF72)

See Table 1–9 and Table 1–10 for a list of average product noise emission data

for the DECArray300 cabinet system.

Table 1–9 Sx300 Average Product Noise Emission Data

Average Acoustic Noise per ISO 7779 Idle Op1 Op2

LNPE, bels: 6.8 6.9 7.1

LPA at the front bystander position, dB: 57 58 61

Average LPA at 4 bystander position, dB: 54 55 58

Product: SA300 (H9643 with 6xSA72, each with 4xRA72)

Table 1–10 Sx300 Average Product Noise Emission Data

Average Acoustic Noise per ISO 7779 Idle Op1 Op2

LNPE, bels: 6.8 6.9 7.1

LPA at the front bystander position, dB: 57 58 61

Average LPA at 4 bystander position, dB: 54 55 58

• LNPE = Noise power emission level (A-weighted sound power level)

measured in bels re 1 pw. (Note: 1 bel = 10 dB.)

• LPA = A-weighted sound pressure level measured in dB (re 20 uPa) at a

bystander position: 1.0 meter from an edge (front, side or rear) of the unit

and 1.5 meter above the ﬂoor.

• Op1 = Drives operating per ISO 7779 (1 drive seeking, others idling).

• Op2 = Drives operating per proposed ISO 7779 (all drives seeking at 19

seeks per second).

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Manx SA7x Guía de instalación Pagina 26