Juniper Networks ISG 2000 - Manuel (Page 25)

Installing and Wiring a DC Power Supply
NetScreen-ISG 2000 19
3. Connect the other end of the grounding lug wire to a grounding point at your
site.
To connect DC power feeds to the terminal blocks:
1. Loosen the retaining screws on each terminal block.
2. Insert the 0V DC (positive voltage) return wire into the center COM connector
and the -48V DC power feed wire into either the left or right connector.
3. Fasten the screws over the connectors.
4. Turn on the power switch.
Note: If there are multiple power supplies in the NetScreen-ISG 2000 and any of
them are off, the Alarm LED on the management module glows red. This
warning indicates that maximum system reliability requires all installed power
supplies to be operational.