Total System Weight (Kilograms)
Number of I/O
Subsystems
1 2 3 4 5 6 7 8
Slimline Doors
With IBF
1021 1095 1170 1648 1748 1823 1898 1973
Slimline Doors
Without IBF
846 921 996 1097 1481 1556 1631 1706
Acoustical Doors
With IBF
1034 1109 1184 1675 1775 1850 1925 2000
Acoustical Doors
Without IBF
872 947 1022 1137 1509 1583 1658 1733
No Doors With IBF 994 1069 1144 1595 1696 1770 1845 1920
No Doors Without
IBF
820 894 969 1044 1429 1504 1579 1653
Note: Italicized numbers indicate single-frame systems.
Acoustical Noise Emissions
Acoustical Characteristic
Product Configuration Declared A-Weighted Sound Power
Level, L
WAd
(B)
Declared A-Weighted Sound Pressure
Level, LpAm (dB)
Operating Idle Operating Idle
7040 Acoustical Doors 7.5 7.5 57 57
7040 Slimline Doors 7.9 7.9 62 62
Notes:
1. Noise levels cited are for a typical configuration (A-Frame: Bulk Power, CEC cage, battery option, media drawer,
and two I/O drawers).
2. The 0.6-B (6-dB) reduction in noise emission levels with the acoustical rear door corresponds to a factor of 4
reduction. That is, the noise level of a single A-Frame with thin covers is about the same as the noise level of
four A-Frames with acoustical covers.
3. L
WAd
is the upper-limit A-weighted sound power level; LpAm is the mean A-weighted sound pressure level at the
1-meter bystander positions; 1 B = 10 dB.
4. All measurements made in conformance with ISO 7779 and declared in conformance with ISO 9296.
172 Site and Hardware Planning Information
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