1-7
Catalyst 4948E and Catalyst 4948E-F Switch Installation Guide
OL-21561-02
Chapter 1 Product Overview
Physical and Environmental Specifications
Physical and Environmental Specifications
Table 1-2 and Table 1-3 lists the Catalyst 4948E and Catalyst 4948E-F switch chassis environmental and
physical specifications.
Ta b l e 1-2 Catalyst 4948E and Catalyst 4948E-F Switch Specifications - Environment, Heat Dissipation, Shock and
Vibrations, Physical Characteristics, and Airflow
Item Specification
Environmental
Temperature, operating Certified for operation: 32° to 104°F (0° to 40°C)
Designed and tested for operation: 32° to 131°F (0° to 55°C)
Temperature, nonoperating
and storage
Chassis unpackaged: –4° to 149°F (–20° to 65°C)
Chassis in protective shipping package: –40° to 158°F (–40° to 70°C)
Thermal transition 0.5°C per minute (hot to cold)
0.33°C per minute (cold to hot)
Humidity (RH), ambient
(noncondensing) operating
Operating: 5% to 90%
Nonoperating and storage: 5% to 95%
Altitude, operating Certified for operation: 0 to 6500 ft (0 to 2000 m)
Designed and tested for operation: –200 to 10,000 ft (–60 to 3000 m)
Heat Dissipation 1364 BTU/hour (worst case)
Shock and Vibration Refer to Appendix D, “Regulatory Compliance and Safety Information” for
shock and vibration compliance information for the switch.
Physical Characteristics
Dimensions (H x W x D) • 1.75 x 17.5 x 19.4 in. (4.4 x 44.4 x 49.3 cm).
• Chassis requires 1 RU.
• The Catalyst 4948E and the Catalyst 4948E-F switch chassis are
designed to install in standard 19-inch equipment racks that meet
ANSI/EIA
310-D, IEC 60297, and ETS 300-119 standards.
Weight • 14 lb (6.35 kg). Base system; no power supplies and no fan tray.
• 19 lb (8.62 kg). Fully loaded system; two power supplies and a fan tray.
Airflow • 28 CFM (low speed)
• 44 CFM (high speed)
Ta b l e 1-3 Catalyst 4948E and Catalyst 4948E-F Switch Specifications - Acoustic Noise
Acoustic Noise
Measured per ISO 7779 and declared per ISO 9296
Bystander positions operating mode at 25°C ambient.
Sound Pressure, dBA Sound Power, dBA
Model Typical, LpAm Maximum, LpAD Typical, LwA Maximum, LwAD
WS-C4948E 55.6 58.6 62.6 65.6
