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Chapter 2 Installing the Device
12 User’s Guide
WIRING A DC POWER SUPPLY
The DC power supply, ON/OFF switch, grounding screw, and terminal blocks, are located
in the back of the chassis of the power supply unit.
To connect the DC power supply to a grounding point at your site:
1. Remove the hex nut on the grounding screw.
2. Place the ground lug on the screw then tighten the hex nut securely.
3. Connect the other end of the grounding lug wire to a grounding point at your
site.
NetScreen-200 Series devices can operate on one or two feeds. To connect DC power feeds
to the terminal blocks:
1. Strip the ends of the power cables.
2. Loosen the three screws in the top of the block. (These are captive screws, which
you cannot completely remove.)
3. Insert the 48V DC power feed wires into the two outside receptacles of the
terminal block.
4. Insert the 0V DC feed wires into the center receptacle.
5. Tighten the screws over the receptacles.
Warning: You must shut off the current to the DC feed wires before connecting the wires to
the power supplies. Also, make sure that the ON/OFF switch is in the OFF position.
DC Power
Terminal Blocks
Power Switch
Grounding
Screw