Chapter 3
Structure
and Principle
Confidential and Proprietary Information of ZTE CORPORATION
17
Power Supply Module
ZXR10 2920/2928/2952 supports two power supply modes:
-48V DC power supply
110V/220V AC power supply
When the -48V DC power supply is adopted, use 48V DC power cables. When the AC
power supply is adopted, use AC power cables. Both of the two modes
support a backup power supply of 12v DC power supply.
FIGURE 8
and
FIGURE 9
respectively show rear panel of the switch when the -48V DC
power supply and 110V/220V AC power supply are adopted.
F I G U R E
8
Z X R 1 0
2 9 2 0 / 2 9 2 8 / 2 9 5 2
B A C K P A N E L
（
D C
P O W E R
）
OFF
ON
P
G
N
D
-4
8
V
R
T
N
-4
8
V
F I G U R E
9
Z X R 1 0
2 9 2 0 / 2 9 2 8 / 2 9 5 2
B A C K P A N E L
（
A C
P O W E R
）
Mode
