User's Manual

ADCP-75-132 • Issue 2C • August 2006
Page 40
© 2006, ADC Telecommunications, Inc.
3. Strip back the outer cable sheath and insulation to expose the wires at both ends of the
cable and strip back 0.2 inches (5 mm) of insulation each wire.
4. Connect the Major alarm wire pair to the MAJOR COM/NC or MAJOR COM/NO
terminals (whichever is required by the external alarm system) on the DHU alarm
terminal connector (supplied with DHU) as shown in Figure 23.
17278-A
ALARM
CONNECTOR
RECEPTACLE
MAJOR
ALARM
WIRES
MINOR
ALARM
WIRES
ALARM CONNECTOR
DETAIL
ALARM
CONNECTOR
NO
COM
NC
MINOR
NO
COM
NC
MAJOR
Figure 23. External Alarm System Connections
5. Connect the Minor alarm wire pair to the MINOR COM/NC or MINOR COM/NO
terminals (whichever is required by the external alarm system) on the DHU alarm
terminal connector as shown in Figure 23.
6. Insert the alarm terminal connector into the receptacle on the DHU front panel.
7. Connect the Major and Minor alarm wire pairs to the appropriate terminals on the
external alarm system.
8. Dress and secure cable per standard industry practice.
4.12 AC Power Connections
The AC power interface between the DHU and the AC power source is supported by a 3-wire
AC power cord connector located on the DHU front panel. The AC connector provides a
connection point for the 120 VAC power cord which is provided separately with the DHU.
Use the following procedure to install the AC power cord: