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Appendix B. Connector Pinouts
B-8 TDU 120e User Manual 61202156L2-1
10BaseT
This is used to connect the TDU 120e to the local area net-
work. See Table B-9.
Connector type (USOC), Shielded 8-pin, module TDU
120e.
Alarm
This is used to connect the TDU 120e to an external alarm
device. See Table B-10.
Connector Type 4-pin, Eurostyle connector
Power
Table B-11. Power Connector (DC powered units)
Table B-9. 10BaseT Ethernet Connector
Pin Name (To Nic)
1 TX1
2 TX2
3 RX1
6 RX2
Table B-10. External Alarm Device Connector
Pin Name Description
1 NC Normally closed
2 NO Normally open
3 COM Common
4 GND Connected to unit chassis
Pin Name Description
1 + +24 or +48 VDC
2 _ -24 or -48 VDC