B&B Electronics High Speed Asynchronous to Synchronous Converter 2011 - Manual (Page 10)

8 2011AS3297 Manual
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 434-7094
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