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HP C100/110 User Manual

Page 29

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13

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