Installation guide

B. Technical Specifications
B-2 June 2004 8620-A2-GN20-50
Cooling and
Air Handling
The internal fans are installed in the chassis to provide cooling.
A built-in feature shuts off power to the circuit cards if a chassis
overheats because of fan failure. If the temperature in the chassis
reaches 70°C, power to the cards in the chassis is turned off
automatically. Power is turned on when the temperature drops below
60°C.
Operating
Environment
Ambient Temperature for system: 32° to 122° F (0° to 50°C)
Ambient Temperature for chassis only: 32° to 140° F (0° to 60°C)
Relative Humidity: 15% to 99% noncondensing
Shock and vibration sufficient to withstand normal shipping
External
Clocking
With an SCP card installed, the following clock rates are supported over
the Clock A and Clock B connectors:
2048 KHz (E1)
1544 KHz (T1)
64/8 KHz (standard BITS)
64/8/0.4 KHz (standard BITS plus 400 Hz)
Table B-1. 8620 BAC Technical Specifications (2 of 2)
Specifications Criteria*
* Technical Specifications subject to change without notification.