Huawei 3 U Quick Installation Manual page 16

7
Connecting Cables
Installing an AC Power Cable
Check the fuse capacity of the external power supply.
Device Model
NetEngine 8000 M8/PTN 6900-2-M8C
Installing an E1 Cable
N OTE
To avoid affecting right-hand board maintenance after cable routing, you
are advised to connect an E1 cable only to a left-hand board.
An E1 cable is a thin cable with a diameter of 1.6 mm. It needs to be con-
nected to a DDF using an MC 75-1-1 connector and a crimping tool with
a bore diameter of 1.7 mm. If you use an MC 75-1-1 connector and a
crimping tool with a bore diameter of 2.5 mm, crimp the joint twice. Spe-
cifically, after performing the first crimping, rotate the coaxial connector
by 90 degrees and crimp the joint again.
An E1 cable with a negative 45-degree connector is delivered by default.
If you use this cable, connect the connector to the desired board port and
use a Phillips screwdriver to fasten screws.
If you use an E1 cable with a positive 45-degree connector, the cable must
be routed without affecting fan module installation or removal. To
achieve this, you need to use an E1 transfer cable instead of directly con-
necting the connector to a board port. Specifically, connect the cable to
the E1 transfer cable, and then connect the E1 transfer cable to the de-
sired board port.
ATN 980C
Recommended Fuse Capacity
≥10A, ≤16A (For hierarchical power
supplying protection,the current of the
circuit breaker at the userside should be 10 A.)
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