User manual

Chapter 2. Installation
2-6 TDU 120e User Manual 61202156L1-1
as a chain input from another TDU 120e or TSU 100. For more
information, see Wiring on page B-1.
Craft Port
The craft port provides the same functionality as the Control
Port Input. Both the craft port and the control port input may
be connected simultaneously, but only one port may be active
at a time. For more information, see Wiring on page B-1.
Chain Port Output
The chain port output provides an EIA-232 output to chain
control to other TDUs or to TSUs. For more information, see
Wiring on page B-1.
10BaseT Interface
The 10BaseT interface provides the LAN interface for
managing the TDU 120e with SNMP or T-Watch Pro. For
more information, see Wiring on page B-1.
External Alarm Connector
The external alarm connector allows you to connect an
external alarm device to the TDU 120e. The alarm relay will
activate on any alarm. The relay will remain activated until
the ACO button on the front panel is pushed. For more
information, see Wiring on page B-1.