26
T1/E1 FIBEROPTIC LINE DRIVER
Appendix B: DC Power-Supply
Connection
NOTE
Ignore this appendix if your unit operates on AC power.
The DC powered unit comes with a standard 3-pin (male) connector located
at the unit rear (see
Figure B-1
). Supplied with the unit is a compatible (female)
cable connector for attaching to your power-supply cable.
Figure B-1. Standard 3-pin male DC connector.
Voltage Polarity for the Power-Supply Cable
• If your power-supply cable already has a compatible connector, just verify
that the voltage polarity is as required.
• If not, connect the wires of your power-supply cable to the supplied cable
connector, according to the voltage polarity shown below in
Figures B-2
and
B-3
. Note that the solder side of the connector is shown. Refer to the
illustration of the cable connector assembly (
Figure B-4
) for assistance.
Figure B-2. Cable connector (female) voltage polarity for -24 or -48 VDC.
For -24 or -48 VDC
GROUND
(0)
1
3
2
VDC INPUT
(Negative pole)
CHASS
GND
48V
+
-
24V
