AT&T MERLIN LEGEND Release 2.0 Pocket Reference Manual page 53

Power Supply Unit Load Requirements
(continued)
Unit Load Calculation Rules
Installed
Mode
Modules
Square Key or
5 or more
Behind Switch
* Empty slots are not permitted between modules.
50
(continued)
Calculation
Use the "Unit Load Rating
of System Modules" table
and instructions below to
determine the estimated
unit loads (ULS):
— If ULs 54, an Auxiliary
Power Unit 9024 is not
required.
— If ULs > 54, use the
"Unit Load Rating of
System Modules" table
to determine the actual
ULs for the system.
If the actual ULS >54, try to
exchange modules
between carriers to reduce
the ULs below 54.*
If the modules cannot be
exchanged to reduce the
UL below 54, an Auxiliary
Power Unit 9024 is
required.