HP Model 735 hp workstation 9000 series model 735 - service handboook - Page 19

RS-232, Serial, Input/Output, connectors

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RS-232 Serial Input/Output connectors You can attach a variety of peripheral devices to the two RS-232 Serial Input/ Output (S10) ports on the workstation. These peripheral devices include printers, plotters, modems. and scanners. Consult the documentation that accompanies each peripheral device for specific information concerning its use. Both S10 ports are programmable. You can set functions such as bit rate, character length, parity, and stop bits. S10 Ports 1 and 2 are used as interfaces for serial asynchronous devices to the CPU. Both ports operate at up to a 19.2K baud rate. The interface to S101 and 2 is by way of RS - 232 drivers and receivers. Table Table 1- 2 shows the S10 connector pin listings. The serial connectors are 9-pin D-sub connectors. Signal names are those specified in the EIA RS-252 standard; Table 1 -2. Serial 1/0 Pins Pin No. Signal 1 DCD ~ RXD 3 TXD 4 DTR 5 GND 6 DSR 7 RTS 8 CTS 9 RI Description Data Carrier Detect Receive Data Transmit Data Data Terminal Ready Ground Data Set Ready Request To Send Clear To Send Ring Indicator Product Information 1- 9

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RS-232
Serial
Input/Output
connectors
You can attach a variety of peripheral devices to the two RS–232
Serial Input/
Output (S10) ports on the workstation. These peripheral devices include printers,
plotters, modems. and scanners. Consult the documentation that accompanies
each peripheral device for specific information concerning its use.
Both S10 ports are programmable. You can set functions such as bit rate, character
length, parity, and stop bits. S10 Ports 1 and 2 are used as interfaces for serial
asynchronous devices to the CPU.
Both ports operate at up to a 19.2K baud rate.
The interface to S101 and 2 is by way of
RS –
232
drivers and receivers.
Table Table 1– 2 shows the S10 connector pin listings.The serial connectors are
9–pin D–sub
connectors. Signal names are those specified in the EIA RS–252
standard;
Pin No.
1
~
3
4
5
6
7
8
9
Table 1 –2. Serial 1/0 Pins
Signal
DCD
RXD
TXD
DTR
GND
DSR
RTS
CTS
RI
Description
Data
Carrier
Detect
Receive
Data
Transmit
Data
Data Terminal
Ready
Ground
Data
Set Ready
Request
To Send
Clear
To Send
Ring
Indicator
Product Information
1–
9