User Manual

December 16, 2002 Part 003609A revision 01 75
Chapter 4: Installation Procedures
Cover Empty Radio Bays
Depending on the configuration of your NPM, there may be empty bays on the
radio rack. Your NPM may arrive with the unused radio bays already occupied
with dummy shelves. If this is not the case or if the configuration of your NPM
has changed, you need to add dummy shelves to any empty bays to ensure the
required airflow to the occupied bays.
 To cover the empty radio bays
1 Slide the dummy shelf into the lowest empty radio shelf bay in the radio rack. If the
bay is too tight to accommodate the dummy shelf, loosen the 5/16-inch screws
that hold the cable troughs to the rack. This should provide enough space for you
to slide in the dummy shelf.
2 Puncture a hole in the grounding tape for each dummy shelf screw location.
3 Secure the dummy shelf to the rack using eight 5/16-inch screws. Torque each
screw to 50 inch-pounds.
4 Retighten the 5/16-inch screws on any loosened cable troughs.
5 Repeat steps 1 to 4 for any remaining empty bays in the radio rack.