HP A4500A - VMEbus Single Board Computer 744 Motherboard Manual page 100

9 Adapting to an ATT258A cabling system
DTC Pin # on Port number -
50-pin RS-423/RS232
connector signal
12 P3 - TXb/SGND
38 P4 - RTS
13 P4 - CTS
39 P4 - RXa/RD
14 P4 - RXb/-
40 P4 - TXa/TD
15 P4 - TXb/SGND
41 P5 - RTS
16 P5 - CTS
42 P5 - RXa/RD
17 P5 - RXb/-
43 P5 - TXa/TD
18 P5 - TXb/SGND
44 P6 - RTS
19 P6 - CTS
45 P6 - RXa/RD
20 P6 - RXb/-
46 P6 - TXa/TD
21 P6 - TXb/SGND
47 P7 - RTS
22 P7 - CTS
48 P7 - RXa/RD
23 P7 - RXb/-
49 P7 - TXa/TD
24 P7 - TXb/SGND
50 Not Used
25 Not Used
94
ATT258A
Pin # on
Jumpers
50-pin
connector
<---------> 15
41
16
<---------> 42
<---------> 17
<---------> 43
<---------> 18
<---------> 44
<---------> 19
45
20
<---------> 46
<---------> 21
<---------> 47
<---------> 22
<---------> 48
<---------> 23
49
24
50
25
Port number -
Pin # on RJ45
RS-423/RS-232
connector
signal
P3 - TXb/SGND 6
P3 - Not Used 7
P3 - Not Used 8
P4 - RTS 5
P4 - CTS 4
P4 - RXa/RD 1
P4 - RXb/- 2
P4 - TXa/TD 3
P4 - TXb/SGND 6
P4 - Not Used 7
P4 - Not Used 8
P5 - RTS 5
P5 - CTS 4
P5 - RXa/RD 1
P5 - RXb/- 2
P5 - TXa/TD 3
P5 - TXb/SGND 6
P5 - Not Used 7
P5 - Not Used 8
Not Used
Not Used