19
Installing the Equipment
2.4.5.2
Connecting to DC Power
The TSBC3000 series, DC model, is furnished with two DC power supplies.
Warning
To avoid electrocution, DC power connections must be performed by a trained
technician.
To connect to DC power:
1. Connect one wire from the positive terminal of the TSBC3000 series to the return side of DC power
source one, as shown in
2. Connect another wire from the negative terminal of the TSBC3000 series to the -48V side of DC
power source one.
3. Connect a ground wire from the ground terminal of the TSBC3000 series to earth ground.
4. Repeat steps 1-3 for the second power DC power source.
Figure
2.7
TSBC3000 Series Redundant DC Supply Wiring Diagram
DC
Power
Source 1
DC
Power
Source 2
+ (positive)
- (ne
g
ative)
Earth
Ground
Power Supply
Mountin
g
Screws
Do not unscrew
Earth
Ground
+ (positive)
- (ne
g
ative)
15
14
13
12
10 11
8
9
3
2
0
7
6
5
4
1
MGMT0
MGMT1
ETH0
ETH1
VOIP0
VOIP1
