System Specifications
50 7750 SR-a4 and SR-a8 Installation Guide
1. Height equals 7 RU.
2. Width includes the integrated flanges for rack mounting.
3. Depth does not include panel protrusions, such as panel screws, connectors, and ground studs.
Environmental Specifications
IOM-a slots 2
MDA-a slots 8
PSU slot 4
Fan tray slot 1
Air filter slot 1
Mounting Mount in a recommended 19-in. (482.6 mm) equipment rack
Chassis has integrated mounting flanges for mounting in a 19-in.
(482.6 mm) rack.
Table 14: 7750 SR-a8 Chassis Specifications (Continued)
Parameter Description
Table 15: 7750 SR-a4 Environmental Specifications
Parameter Description
Normal operating temperature 23 to 113ºF (–5 to 45ºC)
Short-term operating temperature
1
23 to 131ºF (–5 to 55ºC)
Maximum altitude 13 000 ft (3962.4 m)
Normal operating relative humidity 5 to 90% (non-condensing)
Short-term operating relative humidity
1
5 to 93% (non-condensing)
Acoustic noise level 78 dBA at 27ºC (80.6ºF). Fan speed is adaptive.
Shock and vibration Very low levels for continuous duration disturbance (similar
to modern office building, for example)
Shock: 3 g half sine 11 ms
Vibration: 0.1 g from 5 to 100 Hz
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