Appendix E. Cabling Information; Serial Attachment (Models 4I3 And 5I3; Rs-232C Connector Pin Assignments; Rs-422A Connector Pin Assignments - IBM 102 User Manual

Appendix E. Cabling Information

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Serial Attachment (Models 4I3 and 5I3)

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The 4230 attaches to a host or controller by one of two serial
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interfaces, RS-232C or RS-422A. A single 25-pin D connector
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mounted directly on the adapter card allows attachment to either
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interface.
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The RS-232C interface uses a standard serial cable up to 15.2 m (50
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ft) in length with transmission rates up to 19.2 Kbps.
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The RS-422A interface uses a serial cable up to 1219 m (4,000 ft) in
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length with transmission rates up to 38.4 Kbps.
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RS-232C Connector Pin Assignments

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Pin Signal
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Number Name
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2 TXD
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3 RXD
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4 RTS
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5 CTS
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6 DSR
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7 SG
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20 DTR
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RS-422A Connector Pin Assignments

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Pin Signal
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Number Name
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15 - RXD
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17 + RXD
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19 - TXD
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25 + TXD
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Copyright IBM Corp. 1991, 1994
Description
Transmit Data
Receive Data
Request to Send
Clear to Send
Data Set Ready
Signal Ground
Data Terminal Ready
Description
Receive Data
Receive Data
Transmit Data
Transmit Data
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