B&B Electronics 2011 manual Appendix C Synchronous Port Connections Configured As “Dte”

APPENDIX C: SYNCHRONOUS PORT CONNECTIONS (CONFIGURED AS “DTE”)

Pin Name Description

1	FG	Frame Ground; connected straight to asynchronous
		port
2	TXD	Transmit Data (from 2011); data output to synchronous port
3	RXD	Receive Data (to 2011); data input from the synchronous
		port input to 2011 power supply
4	RTS	Request to Send (from 2011); 4 bit delay from
		asynchronous port (2011 waits 4 bits before dropping RTS
		to the synchronous port; this facilitates use in a polling
		environment)
5	CTS	Clear to Send (to 2011); connected straight through to
		asynchronous port
6	DSR	Data Set Ready (to 2011); connected straight through to
		asynchronous port
7	SG	Signal Ground; connected straight through to
		asynchronous port
8	CD	Carrier Detect (to 2011); connected straight through to
		asynchronous port
9	+DCV	Connected straight through to asynchronous port
10	–DCV	Connected straight through to asynchronous port
15	TXC	Transmit clock (to 2011); used to synchronize data
		conversion from 2011 to synchronous port
17	RXC	Receive clock (to 2011); used to synchronize data
		conversion from 2011 to synchronous port
20	DTR	Data Terminal Ready (from 2011); input to power supply
22	Rl	Ring Indicator (to 2011); connected straight through to
		asynchronous port

8 2011AS3297 Manual

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