Digital Equipment DEC 3000 500X AXP Owner's Manual page 211

External SCSI Port
Table B–3 (Cont.) External SCSI Port Pin-outs
Pin
12
13
14
15
16
17
18
19
20
21
22
23
24
25
B–6 Port Pin-outs
Description Pin
Chassis ground 37
Not used 38
Chassis ground 39
Chassis ground 40
Chassis ground 41
Chassis ground 42
Chassis ground 43
Chassis ground 44
Chassis ground 45
Chassis ground 46
Chassis ground 47
Chassis ground 48
Chassis ground 49
Chassis ground 50
Description
Chassis ground
Terminal power
Chassis ground
Chassis ground
SCSI bus ATN
Chassis ground
SCSI bus BSY
SCSI bus ACK
SCSI bus RST
SCSI bus MSG
SCSI bus SEL
SCSI bus CD
SCSI bus REQ
SCSI bus I/O