40
CHAPTER 3
Chapter 3: Installation
Installation Guide: 1200-7000 Series Routers
TiOS version 8.0
System Power
These systems accept external power from single AC, dual AC, single DC, or dual DC sources.
Tasman Networks provides two AC-to-DC power supplies only for dual AC power systems. For all
other systems, DC power supplies are not provided by Tasman Networks and must be obtained from
a third-party vendor.
DC Power
Up to two external DC power supplies can be connected to the terminal block on the back panel of
these systems.
ESD:
Before connecting cables or performing maintenance on a Tasman system, always wear an
ESD-preventative wrist strap. Connect the banana plug to the ESD ground connector on the system
chassis. Make sure that the wrist strap makes contact with your skin.
CAUTION:
As a general safety precaution, be sure to provide DC power through either a fuse or DC
circuit breaker with a maximum rating of 3 amps.
To connect DC power:
1
Make sure the DC power source is turned off.
2
For single source power, remove 1/2 inch of insulation from both ends of two 18 AWG wires.
For redundant (dual source) power, use four wires. Refer to Figure 23 on page 43.
Prepare two 18 AWG wires for each DC input (A or B) that you intend to use. The A input consists
of connectors 3 and 4; the B input consists of connectors 1 and 2.
NOTE:
You can use either the A or B input for single-source power. Use both A and B inputs for
dual-source power.
3
Insert the stripped ends of the wires into the A and/or B input terminals.
4
Connect the –48 V lead to the –48 V terminal.
5
Connect the +48 V return lead to the appropriate (A or B) +48 RTN terminal.
CAUTION:
To avoid equipment damage, make sure that the +48V lead is connected to the appropriate
RTN connector (either 1 or 3) on the terminal block.
6
Clamp each inserted wire:
a Insert a small screwdriver in the port above each inserted wire.
b Tighten the screw to within the torque guidelines printed on the back panel.
WARNING:
Make sure there are no exposed wires.
Figure 21 DC Power Terminal Block Connections
