Appendix C. Network PinoutsC-2 TSU 120 User Manual 61202129L1-1Control In/Chain InThis is used as an EIA-232 port for connection to a computer ormodem (Control In) or to another TSU 120 or TSU 100 (ChainIn). See Table C-2 for the pinout for the control/chain-in connec-tor.ConnectionsThe chain-in connections are as follows:Connector type RJ-48Part number AMP# 555164-2Table C-2. Control In/Chain in PinoutPin Name Description1 GND Ground - connected to unit chassis2 RTS Request to send - flow control3 RXDATA Data received by the TSU 1204 UNUSED5 TXDATA Data transmitted by the TSU 1206,7 UNUSED8 CTS Clear to send - flow control
