HP t505 Hardware Reference Manual page 21
Flexible
Hide thumbs
Also See for t505:
- Troubleshooting manual (71 pages) ,
- Product end-of-life disassembly instructions (12 pages)
Table of Contents
Advertisement
To configure the serial ports:
1.
Locate the serial port and jumper.
2.
Place jumpers on the appropriate pins. (See
on page 16
to determine the appropriate pins.)
CAUTION:
An unsupported configuration can cause severe equipment damage. Carefully verify
COM Port Jumper locations and supported configurations before you configure a serial port. See
Figure 2-4 Serial Port Jumper Locations on the System Board on page 14
Configuring Serial Port Power on page 16
Table 2-1
COM Port Default Configuration
pin #
COM1
pin 1
DCD
pin 2
RXD
pin 3
TXD
pin 4
DTR
pin 5
GND
pin 6
DSR
pin 7
RTS
pin 8
CTS
pin 9
RI
Table 2-2
COM Port Functionality
pin #
COM1
(Standard)
pin 1
DCD
pin 2
RXD
pin 3
TXD
pin 4
DTR
pin 5
GND
pin 6
DSR
pin 7
RTS
pin 8
CTS
pin 9
RI
Table 2-3 Configuring Serial Port Power
for Jumper locations and supported configurations.
COM2
COM3
+5V
+5V
RXD
RXD
TXD
TXD
DTR
DTR
GND
GND
DSR
DSR
RTS
RTS
RXD (TTL)
CTS
TXD (TTL)
RI
COM2–Cable
COM3
Connection
(Customized)
(Customized)
+5V/DCD
+5V/+12V/DCD
RXD/TXD/RXD (TTL)/
RXD/TXD
TXD (TTL)
TXD/RXD/TXD (TTL)/
TXD/RXD
RXD (TTL)
DTR/+5V
DTR/+5V/+12V
GND
GND
DSR
DSR
RTS
RTS
RXD/TXD/RXD (TTL)/
CTS
TXD (TTL)
TXD/RXD/TXD (TTL)/
RI
RXD (TTL)
Configuring Powered Serial Ports
and
Table 2-3
COM4
+5V
RXD
TXD
DTR
GND
DSR
RTS
CTS
RI
COM4
(Customized)
+5V/+12V/DCD
RXD/TXD
TXD/RXD
DTR/+5V/+12V
GND
DSR
RTS
CTS
RI
15
Advertisement
Table of Contents
