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Ensure that the circuit breaker of the PDU is set to the OFF state. Insert the DC connector into the power port
of the PDU. Ensure that the two groups of power cables are connected to different wiring terminals,
PIU boards in 1+1 hot
backup mode
3
Installing E1 Cables
Optional
:
Connecting E1 Cables
to the External Equipment
a
Optional: Connecting E1 Cables
to the E1 Panel
b
If the C3 PDU is available, see “Installing Power Cables for the C3 PDU” in Appendixes.
6
CAUTION
If an external power box is used, cut off the input of the power box before you connect power cables.
-48V
0 V
-48V
0 V
Power box
The SP3D, MD1, ML1, and SP3S boards provide the E1 port.
For information about the wiring sequence of the E1 cables,
see the wiring table delivered with the E1 cables or the
cable part in the
Hardware Description
.
For a 1.6 mm diameter E1 cable, use a type 75-1-1
connector and a 2.5 mm or 1.7 mm COAX crimping tool
when assembling the DDF-side connector of the E1 cable.
SP3D board
SP3D board
NOTE