Huawei OptiX RTN 980 Quick Installation Manual page 22

6
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
CAUTION
If the C3 PDU is available, see "Installing Power Cables for the C3 PDU" in Appendixes.
If an external power box is used, cut off the input of the power box before you connect power cables.
3
Installing E1 Cables
a
Optional：Connecting E1 Cables
to the External Equipment
The SP3D, MD1, ML1, and SP3S boards provide the E1 port.
NOTE
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
19
Power box
0 V -48V
b
Optional: Connecting E1 Cables
to the E1 Panel
0 V -48V
SP3D board