Chapter 3 Product Composition
Caution!
The 10 mm
2
DC power cable cannot be directly connected to the ZXSDR R8978, and
needs to be converted to a 4 mm
2
DC power cable through a junction box before connecting
to the ZXSDR R8978.
The ZXSDR R8978 does not have an AC power interface. The AC power should be
converted into DC power through the outdoor AC power lightening protection box and
then connected to the ZXSDR R8978.
External View
The DC power cable is a blue-black cable.
shows the external view.
Figure 3-6 DC Power Input Cable
1.
Copper wire
2.
Shielding layer
3.
-48 V core
4.
-48 V GND core
Signal Description
Signal Name
Signal Meaning
Wire Color
-48 V
-48 V power
Blue
-48 V GND
-48 V ground
Black
Connection
If...
Then...
The junction box is not required if the indoor power lightening protection
box is near to the ZXSDR R8978 and voltage drop can be ignored.
The indoor DC power distribution unit (with a power switch) connects to
the lighting protection box of the indoor DC power supply.
Use the DC power supply
without a junction box
Connect the ZXSDR R8978 to the indoor DC power lighting protection
box (there are a total of three outputs in the indoor DC power lighting
protection box, each of which has an air switch and can be connected
to an
3-7
SJ-20140808143736-001|2014-10-30 (R1.1)
ZTE Proprietary and Confidential
