
Installation
2-7
3170-A2-GB20-30
March 1999
Installing the Redundant –
48 Vdc Power
Supply
To install the E1 DSU/CSU using a redundant – 48 Vdc
power supply, refer to Figure 2-12 and use the following
procedure.
To install the redundant – 48 Vdc power supply:
"
Procedure
1. Connect the black wire to the – 48 Vdc return
source B.
2. Connect the red wire to the – 48 Vdc return
source A.
3. Connect the green wire to a suitable ground.
4. Connect the orange wire to the – 48 Vdc input
source B.
5. Connect the blue wire to the – 48 Vdc input
source A.
6. Cut the white wire off at the outer insulation.
7. Plug the power connector into the E1 DSU/CSU.
1
2
3
4
5
6
BLACK
RED
GREEN
WHITE
ORANGE
BLUE
– 48 VDC RETURN B
– 48 VDC RETURN A
GROUND
– 48 VDC INPUT B
– 48 VDC INPUT A
99-14300-02
X
DSU/CSU POWER
PLUG
TO CUSTOMER-SUPPLIED BATTERY
Figure 2-12. –
48 Vdc Redundant Source Power Supply Pinouts