Owner`s manual

A–5Order Numbers and Specifications
Acoustic Specifications
Table A–10 and Table A–11 lists the preliminary declared acoustic values per
ISO 9296 and ISO 7779, for the DEChub 900 MultiSwitch hub.
Table A–10: Acoustical Specifications – English
Acoustics: Declared values per ISO 9296 and ISO 7779
1
Product
Idle/Operate
Product
Sound Power Level
L
WAd
, B
Sound Pressure Level
L
pAm
, dBA
DMHUB–MB + H7890–MA 5.2 38
DMHUB–MB + 2 x H7890–MA 5.5 41
DMHUB–MB + 3 x H7890–MA 6.2 48
DMHUB–MB + 4 x H7890–MA 6.5 51
DMHUB–MB
No acoustic noise No acoustic noise
1
Current values for specific configurations are available from Digital Equipment
Corporation representatives. 1 B = 10 dBA.
NOTE
Values for half- or full-height network modules are in
each module’s installation documentation.