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System Overview
System Unit Rear Panel Connectors
Table 2 shows the SIO connector pin listings. The serial connectors are 9-pin
D-sub connectors. Signal names are those specified in the EIA RS-232 stan-
dard.
SCSI Connectors
Use the single-ended and fast, wide connectors to connect external SCSI
devices such as DDS-format tape drives and CD-ROM drives. Consult the
documentation that accompanies each SCSI device for specific information
concerning its use. Refer to Appendix C for information about connecting
SCSI devices to your workstation.
NOTICE: When attaching external SCSI devices, be sure to terminate the last device
on the external SCSI bus.
Table 2 Serial I/O Pins
Pin No. Signal Description
1 DCD Data Carrier Detect
2 RXD Receive Data
3 TXD Transmit Data
4 DTR Data Terminal Ready
5 GND Ground
6 DSR Data Set Ready
7 RTS Request To Send
8 CTS Clear To Send
9 RI Ring Indicator