3-13
Cisco MGX 8800/8900 Series Hardware Installation Guide
Releases 2 - 5.2, Part Number OL-4545-01, Rev. H0, May 2006
Chapter 3
Preparing for Installation
Site Requirements for the MGX 8850 or MGX 8850/B Switch
Space
You can install the following MGX 8850 or MGX 8850/B system components in a rack (as shown in
Figure 3-3
):
•
Exhaust plenum
•
Upper fan tray
•
Cisco MGX 8850 switch
•
Lower fan tray
•
Air intake plenum
•
AC power supply tray (optional)
Non-Operational
•
None.
•
1.12 Grms, 3 to 500 Hz
•
Spectral break points of
0.0065 G
1
/Hz at 10 Hz and 100 Hz
•
5 dB/octave roll-off at each end
•
30 minutes in each of 3 axes
Earthquake
•
No damage to the switch when tested
to earthquake waveform.
•
75-mm maximum single amplitude
deflection.
•
Frame-level natural mechanical
resonant frequency > 2 Hz.
•
Frame-level natural mechanical
resonant frequency > 6 Hz.
•
Product must function before and
after vibration is applied to each axis
(x = side to side, y = front to back, z
= up and down).
•
Product must operate without loss of
service during earthquake testing.
•
None
1.
Office product—More than 2 m from regularly inhabited positions
2.
Cisco package test specification
Table 3-2
Vibration Condition Recommendations (continued)
Category
NEBS Description
MDVT Description