HP A4500A - VMEbus Single Board Computer 744 Motherboard User Manual

51
RS-232 connection
7
RS-232 DB25 Direct connection to HP 3000 ATP ports (3-pin connector)
This cabling scheme is recommended for connecting to HP 3000 ATP ports with
3-pin connectors.
RS-232 DB25 Direct connection to HP 9000 with a DDP DB25
This cabling scheme is recommended for connecting to HP 9000 with sub-D25-pin
connectors.
1 - PGND
2 - RD
3 - TD
7 - SGND
8 - RTS
22 - CTS
-
INPUT
OUTPUT
-
OUTPUT
INPUT
25-pin male connector to DTC 3-pin male connector to ATP
3 - ATP TD
2 - ATP RD
1 - ATP SGND
OUTPUT
INPUT
-
1 - PGND
2 - RD
3 - TD
7 - SGND
8 - RTS
22 - CTS
-
INPUT
OUTPUT
-
OUTPUT
INPUT
25-pin male connector to DTC
DDP 25-pin male connector to HP 9000
1 - DDP PGND
3 - DDP TD
2 - DDP RD
OUTPUT
INPUT
-
7 - SGND
-

HP A4500A - VMEbus Single Board Computer 744 Motherboard Specifications

General

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