Technical information

ADC Telecommunications, Inc.
284 C
HAPTER 11: FAULT MANAGEMENT
Configuring Hardware Alarms
This section provides information about the monitoring and reporting of
hardware alarms and includes:
■ DB15 Alarms
■ Fan Assertion Levels
■ Power Supply Assertion Levels
The Cuda 12000 utilizes an external fan tray for cooling and obtains power
from an external power source. Fault management and reporting features on
the Cuda 12000 allow you to configure the reporting of fault conditions as
they arise on these critical devices so you may take action prior to a loss of
operation, or know when the power source and cooling capability is
compromised.
For a single chassis, you can connect these external components:
■ Fan Tray — The ADC-provided fan tray is a required component and
serves as the system cooling unit.
■ Power Supply A — A single -48 volt DC power source is required for
system operation.
■ Power Supply B — Connection to a second power source is optional to
provide redundancy.
For more information about the Cuda 12000 cooling and power features,
see the “Cuda 12000 IP Access Switch Installation Guide.”
Two DB-15 connectors—alarms in and alarms out—on the rear of the chassis
enable communication of alarms from external power and fan units. Using a
ADC-provided cable, you connect the alarms-in connector to the external
fan tray and power supplies that you want to monitor. The external devices
then transmit alarms into the chassis over this connection. The other DB-15
is the alarms out connection used to connect an external alarm indication
device.
For information about how to cable the fan tray and power supplies to the
chassis for fault reporting, see the Cuda 12000 IP Access Switch Installation
Guide.