HP A4500A - VMEbus Single Board Computer 744 Motherboard User Manual

50
RS-232 connection
7
DB25 Direct connection to HP Vectra PC’s (9-pin connector)
This cabling scheme is recommended for connecting to the following HP Vectra
interfaces:
RS-232 DB25 Direct connection to HP printer with hardware handshake
This cabling scheme is recommended for connecting the following devices when a
hardware handshake is necessary:
Note HP Laser printers provide hardware flow control of host ports using DTR on pin 20.
The HP DTC family provide hardware flow control of devices using RTS/CTS on
pins 8 and 22.
HP Vectra with 9-pin connector: 386/XX,486/XX
HP Vectra interfaces: 24540B port A, 24541B port A
1 - PGND
2 - RD
3 - TD
7 - SGND
8 - RTS
22 - CTS
-
INPUT
OUTPUT
-
OUTPUT
INPUT
3 - TD
2 - RD
7 - RTS
OUTPUT
INPUT
OUTPUT
INPUT
25-pin male connector to DTC 9-pin female connector to Vectra
8 - CTS
6 - DSR
5 - SGND
1 - DCD
4 - DTR
9 - RI
INPUT
INPUT
INPUT
OUTPUT
-
HP Laserjet HP648A/P, 86A/D, HP33440A/F, 47A/F, 49A, 59A,
41063A, C1200A, C1202A
HP Ruggedwriter Hp 2235
1 - PGND
2 - RD
3 - TD
7 - SGND
8 - RTS
22 - CTS
-
INPUT
OUTPUT
-
OUTPUT
INPUT
25-pin male connector to DTC 9-pin female connector to Vectra
1 - PGND
2 - RD
3 - TD
7 - SGND
4 - RTS
20 - DTR
-
OUTPUT
INPUT
-
OUTPUT
OUTPUT

HP A4500A - VMEbus Single Board Computer 744 Motherboard Specifications

General

Brand	HP
Model	A4500A - VMEbus Single Board Computer 744 Motherboard
Category	Server
Language	English