User manual

Appendix B. Connector Pinouts
B-2 TDU 120e User Manual 61202156L1-1
Control In/Chain In
This is used as an EIA-232 port for connection to a computer
or modem (Control In) or to another TSU/TDU family
multiplexer or TSU 100 (Chain-In). See Table B-3 for the
pinout for the control/chain-in connector.
Table B-2. Network Pinout of the Male 15-Pin D-Connector
Pin Name Description
1
T TX DATA TIP Send data toward the Network
2
FG FRAME GROUND
3
T1 RXDATA-TIP Receive data from the Network
4
FG FRAME GROUND
5,6,7,8
UNUSED
9
R TXDATA-RING Send data toward the Network
10
UNUSED
11
R1 RXDATA-RING Receive data from the Network
12,13,14,15
UNUSED
Table B-3. Control In/Chain In Pinout
Pin Name Description
1
GND Ground - connected to unit chassis
2
RTS Request to send - flow control
3
RXDATA Data received by the TDU 120e
4
UNUSED
5
TXDATA Data transmitted by the TDU 120e
6,7
UNUSED
8
CTS Clear-to-send-flow control