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Appendix B. Connector Pinouts
Pin
1
2
3
4
5,6,7,8
9
10
11
12,13,14,15
Control In/Chain In
B-2
Table B-2. Network Pinout of the Male 15-Pin D-Connector
Name
T
TX DATA TIP
FG
FRAME GROUND
T1
RXDATA-TIP
FG
FRAME GROUND
UNUSED
R
TXDATA-RING
UNUSED
R1
RXDATA-RING
UNUSED
This is used as an RJ-45 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.
Pin
Name
1
GND
2
RTS
3
RXDATA
4
UNUSED
5
TXDATA
6
Ext Alarm A
7
Ext Alarm B
8
CTS
TDU 120e User Manual
Description
Sends data toward the Network
Receives data from the Network
Sends data toward the Network
Receives data from the Network
Table B-3. Control In/Chain In Pinout
Description
Ground - connected to unit chassis
Request to send - flow control
Data received by the TDU 120e
Data transmitted by the TDU 120e
When grounded, generates Alarm A
When grounded, generates Alarm B
Clear-to-send-flow control
61202156L2-1
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