Harris Constellation, Installation & Maintenance

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Harris Corporation Constellation™
System Features 1-19
INTRODUCTION
Software Updates
The download program stores run-time software in the SPU Controller. This
downloading can be done either directly at the local site or remotely from a
distant site.
Replaceable Modules
Plug and play enables the user to remove a field-replaceable module from
service and then replace (or restore) the module without needing to reprogram
the user-configurable settings. All modules in the Signal Processing section can
be removed and replaced without turning off the power.
Alarm Reporting
The following alarm system is supported:
•
Fault LEDs
•
Online LEDs
•
Local status LEDs
•
External control relay and customer external alarm inputs
Add-Drop Multiplexer Configuration
DS1 Configuration
At a repeater, T1 tributaries may be dropped in groups of 4 T1 lines (T1
1-4
, T1
5-8
,
T1
9-12
, and T1
13-16
).
•
A direction: M12 slots 1 through 4
•
B direction: M12 slots 5 through 8
By using the Keypad command, each dropped T2 group may be assigned to any
of the 4 M12 slots.
The protection M12 Unit protects the A and B direction slots.