• If you turn off your system, wait at least 30 seconds before turning it on again to avoid system component
damage.
Site Selection Guidelines
The Cisco Catalyst CW9800H1 and CW9800H2 Wireless Controllerss requires specific environmental
operating conditions. Temperature, humidity, altitude, and vibration can affect the performance and reliability
of the controller. The following sections provide specific information to help you plan for a proper operating
environment.
The Cisco Catalyst CW9800H1 and CW9800H2 Wireless Controllerss are designed to meet the industry
EMC, safety, and environmental standards described in the Regulatory Compliance and Safety Information
- Cisco Catalyst CW9800H1 and CW9800H2 Wireless Controllerssdocument.
Site Environmental Requirements
Environmental monitoring protects the system and components from damage caused by excessive voltage
and temperature conditions. To ensure normal operation and avoid unnecessary maintenance, plan and prepare
your site configuration before installation. After installation, make sure the site maintains the environmental
characteristics, as shown in the following table.
The following table lists the environmental tolerance for the Cisco Catalyst CW9800H1 and CW9800H2
Wireless Controllers.
Table 12: Cisco Catalyst CW9800H1 and CW9800H2 Wireless Controllers Environmental Tolerance
MaximumMinimumEnvironmental Characteristic
104° F (40° C)
(40° C up to 10,000 feet)
41° F (5° C)Operating temperature (nominal)
122° F (50° C)41° F (5° C)Operating temperature (short term)
158° F (70° C)–4° F (–20° C)Storage temperature
85%5%Operative humidity (nominal)
(relative humidity)
90%5%Operative humidity (short term)
95%5%Storage humidity (relative
humidity)
10,000 feet (3000 meters)0 feet (0 meters)Altitude, operating: 0 feet (0
meters) to 10,000 feet (3000
meters)
50,000 feet (15240 meters)–1000 feet (–304.8 meters)Altitude, nonoperating: over
allowable temperature range
158° F (70° C)–13° F (–25° C)Thermal shock nonoperating with
change over time of 3 minutes
Cisco Catalyst CW9800H1 and CW9800H2 Wireless Controllers Hardware Installation Guide
34
Preparing Your Site for Installation
Site Selection Guidelines
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