DECserver 900GM Installation
29
Connector Pin Assignments (Cont.)
Table 6 (Cont.) 68-pin to Eight 8-pin MP Octopus Pinout
8-pin MP
Number
Twisted
Pairings
8-pin MP
Pin Number
68-pin
Pin Number
Partial Modem
Control Signal
7
P i
{
6
25
TXD
Pair
{
3
59
TXD COM
P i
{
2
26
RXD
Pair
{
1
60
RXD COM
P i
{
8
27
DSR
Pair
{
7
61
DTR
P i
{
4
28
CTS
Pair
{
5
62
RTS
8-pin MP
Number
Twisted
Pairings
8-pin MP
Pin Number
68-pin
Pin Number
Partial Modem
Control Signal
8
P i
{
6
29
TXD
Pair
{
3
63
TXD COM
P i
{
2
30
RXD
Pair
{
1
64
RXD COM
P i
{
8
31
DSR
Pair
{
7
65
DTR
P i
{
4
32
CTS
Pair
{
5
66
RTS
NOTES: On the 68-pin connector, tie pins 33 and 68 together to enable the
software to identify the cable.
The wire size should be 28GA or 26GA unshielded twisted pair.
