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2. BitStorm 1900 Installation and Testing
1900-A2-GN20-00 BitStorm 1900 Installation and Maintenance Guide 2-49
Task 006: Connecting Power to the Shelf
Use this procedure to install the power feeds from a -48 V DC or 110 V
AC power source to the BitStorm 1900 modem shelf.
NOTE: The filter shelf does not require a power feed.
Requirements
This procedure requires the following:
• Volt-ohm meter
• BitStorm 1900 DC power harness
• -48 V DC power fuse bay or AC-to-DC rectifier or 110 V AC
power
Power supply and wiring specifications are described in "Appendix A.
Installation Requirements," on page 107.
Step Procedure
1.) Eject all cards (Power, MIU Shelf Processor and Modems) from the
backplane of the shelf. Ensure that the cards completely dislodge
from their backplane connectors.
2.) Route and connect a ground wire from the building’s grounding
facility to the ground stud on the side flange of the shelf. Refer to
the Appendix A section "Grounding Environment Specifications,"
on page 109 for the BitStorm 1900 grounding requirements.
!
WARNING: POSSIBLE EQUIPMENT DAMAGE! Never
connect untested power to the BitStorm
1900 with any circuit packs installed. The
BitStorm 1900 shelf and rectifier could be
seriously damaged if the power feed
polarities on a -48 V DC power supply are
reversed.