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 2010); data output to synchronous

 

 

port

3

RXD

Receive Data (to 2010); data input from the synchronous

 

 

port; input to 2010 power supply

4

RTS

Request to Send (from 2010); 4 bit delay from

 

 

asynchronous port (2010 waits 4 bits before dropping

 

 

RTS to the synchronous port; this facilitates use in a

 

 

polling environment)

5

CTS

Clear to Send (to 2010); connected straight through to

 

 

asynchronous port

6

DSR

Data Set Ready (to 2010); connected straight through to

 

 

asynchronous port

7

SG

Signal Ground; connected straight through to

 

 

asynchronous port

8

CD

Carrier Detect (to 2010); 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 2010); used to synchronize data

 

 

conversion from 2010 to synchronous port

17

RXC

Receive clock (to 2010); used to synchronize data

 

 

conversion from 2010 to synchronous port

20

DTR

Data Terminal Ready (from 2010); input to 2010 power

 

 

supply

22

Rl

Ring Indicator (to 2010); connected straight through to

 

 

asynchronous port

2010AS3297 Manual

9

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B&B Electronics 2010 manual Appendix C Synchronous Port Connections Configured AS DTE